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00:05 Okay, can you see my screen or not yet? I just still

00:20 us. Okay, let me let change things a little bit here.

00:37 this comes up on the other Can you see that at all?

00:48 yet. Okay. Okay, now going okay now I see it.

01:07 . Which which screen do you Did you see the split screen or

01:11 full screen? Just the full Okay, good. That's the way

01:17 like it. Great. Okay. , well we'll get started. You

01:21 , you know you tie, he's I guess with you for the last

01:25 months or so. So that's What we're gonna try to do is

01:31 create some notes about this. I'm try to transcribe the lectures and then

01:37 text. So all the material is on blackboard and I think you've got

01:43 to that. Okay. And I have downloaded the slide.

01:49 great. Um and we'll also we'll try to get some text with them

01:54 you won't need that quite as So so here we go, just

02:00 couple of pictures. This was a bit before your time I guess,

02:03 this was a former grad student, Ruiz. And one of the classes

02:08 actually logging the well at on campus of the api calibration test site.

02:16 just below an old picture from some we were doing um up in Alberta

02:24 then on the right, it's too we didn't get you for the in

02:28 field camp because we were taking students the harbor and Galveston's on and this

02:32 one of the, one of the submersibles in Galveston's. So we'll get

02:40 . Uh so in this and this what we're trying to do is focus

02:45 subsurface measurements um or in situ measurements underground measurements and and with a focus

02:55 there. But what are, what trying to do is understand the earth

02:59 then typically to find something valuable and some money and avoid some problems.

03:08 we'll be looking mainly at well logs VSP so that's where we're going to

03:14 . You did the reservoir of So there will be a bunch of

03:18 with probably some of the stuff you've before, which is good be a

03:23 reminder. And of course our challenges the old maximum the quotation too much

03:31 given much is expected. So we got some surface access now we drilled

03:36 well so we want to really get that we can out of it.

03:40 that's the goal of this course. again, just just stop me if

03:48 anything you want to talk about or so again, I like to put

03:54 the big picture right at first. uh I kind of separate our our

04:02 activities of traditional geophysics, applied geophysics the subsurface into the economic stuff which

04:09 typically looking for energy resources and mineral and directly attached to stuff we need

04:17 our day to day living. But other big place of applied geophysics courses

04:24 hazards and infrastructure more and more and understand the hazards and then mitigate against

04:32 . As you can see this horrific in Eastern Turkey right now is a

04:40 tectonic matter, with the, the micro plate being squeezed between the Eurasian

04:47 and the Arabian plate giving rise to massive earthquakes, 7.9 earthquakes and that

04:53 major faults and also quite near the . You've probably seen some of these

04:58 of distorted roads and railways and just stuff. But the goal for us

05:05 really to know where the faults are then what's their history? What's their

05:12 in history? How do they How do they radiate what kind of

05:15 they have? And then how do build to uh avoid everything getting

05:20 So there's lots of lots to do our work and hazards and infrastructure.

05:26 of course we're on the other the straight academic or curiosity driven

05:31 We wanna understand how everything works, the sub surface of our planet and

05:37 the other planets, but mainly in economic world, our workaday world where

05:42 get paid, it's mainly for energy minerals and that's expanded lately. Of

05:48 we've still got lots of hydrocarbons. but we're looking more geothermal heat,

05:54 a low grade resource, but something gonna log for and then more and

05:59 , we're looking at precious metals, minerals, rare earths, all the

06:05 stuff too for modern technologies and then don't want to leave out finding fresh

06:13 too. So that's a that's a deal. So that's really what what's

06:22 us what we're looking for. And course the in an applied world like

06:27 , the economics are driving us. the price of oil is a big

06:31 for us. Um And then of the prices of all the other resources

06:35 important. And so we'll be learning going through a lot of the different

06:41 of all the down hall or in well measurements that apply to this.

06:55 once again just to put our scope place for this course and the the

07:01 field, borehole geophysics is pretty self but that doesn't stop us from trying

07:09 tune it up a bit. And can see a bunch of different definitions

07:15 of the USGS has a has a um Again collecting geologic data very specifically

07:25 having probes in a well on a that's that's probably a little bit restrictive

07:32 we can put it on drill there's lots of other stuff we can

07:37 . But I think in borehole geophysics it's a it's a science and application

07:42 then we're gonna acquire, analyze and any measurements we make with sources or

07:48 in the well and try to get useful. So there are a few

07:55 of what we're up to now. example, one of the company's coal

08:06 . They um really from one of advertisements. This is all the

08:14 These are all the tools, all toys that we use in borehole

08:18 But it really gives a list of we're going to cover and also the

08:24 of the measurements and one of the things about marvel geophysics is that every

08:31 physical device we can imagine is So you can see there are the

08:38 ones like the calipers. But we into the nuclear measurements with natural gamma

08:46 neutron logging, mechanical measurements with sonic and formation pressure, the sonar's cross

08:56 . And then uh of course electrical and electromagnetic logs. So everything

09:04 every kind of measurement you can imagine we can make on rocks that is

09:11 . And then they're imaging devices to just use just light or sound or

09:16 et to make to make pictures of borehole wall. So that really defines

09:22 lot of what's done in borehole So those are the instruments and

09:29 we'll talk about most of them and just below with cold log. These

09:36 the kind of applications that they have anything from water to various minerals,

09:42 geotechnical near surface, environmental and and course energy. So then we can

09:53 to think next Also in the oil , for example the petroleum world,

10:00 does this institute measuring? Where does field here come into play and you

10:09 see very early on when they're assessing whole basin, there will probably be

10:16 drilled in some real rocks known and taken and cuttings and all that

10:22 So certainly in assessing the whole there's lots with logging that's done.

10:28 in fact right now, if you're for a project, we just received

10:32 whole pile of data from India and got two major, largely unexplored basins

10:40 they want our help with. So Andaman basin and close to the crystal

10:44 a very big, big basins. sent us a whole pile of

10:47 We've got all kinds of data if interested? I actually am because I

10:53 chosen a capstone project yet. Um van neuter and he's been trying to

10:59 me like a professor because my, current job, like there's just no

11:05 data for me. Like if I a chemist, like they'd have a

11:08 but there's just nothing for me So yes. Okay. Well,

11:14 , this would be exciting and I it would be uh are you,

11:19 you you mainly interested in sort of the resource industry, the oil industry

11:23 what, what I should have asked this before. What what are some

11:27 your goals? I mean, I'm trying to get in right now,

11:33 know, that's just like the I feel like I've applied for everything

11:36 everywhere. Um So my main goal now is just to get in somewhere

11:41 I've learned all of this stuff, I haven't been able to apply it

11:44 anything. So it's just like slowly me in a sense. Um So

11:50 just trying to get in. Oh . Well let us help you with

11:54 because periodically the recruiters were talking to all the time and um we try

12:02 help sometimes the companies like TGS and other companies call us and say do

12:06 know any students who would be So just to explore this a bit

12:12 because I've got several projects that that need help. So this India

12:19 I've got the, the drives right my desk here. They've got hundreds

12:24 two D. Seismic lines and dozens well logs from these basins in

12:31 And it's actually a pretty big The whole universities signed a memorandum of

12:36 with with India to set up a office and to study these basins.

12:42 that's not my vision. I've got data right here. Um So that's

12:47 , the other one we're working Another student actually for her capstone,

12:55 might know her Magna McDonough. Yeah, she's just finishing. But

13:04 started working on helium. That's another one right now. Helium plays and

13:08 a colleague of mine, a friend two helium plays, He's a consultant

13:13 . So that's another one and then just got funded this week too to

13:21 doing some work with C. Two sequestration especially with salt domes.

13:28 I'm looking for probably someone to work VSP and other borehole stuff with respect

13:35 salt domes and gas storage and salt . Okay so you you might now

13:44 I know that you're you're looking I keep my eyes open to and and

13:51 try to get something that would be your interest and kind of in your

13:55 world. I'm a little rusty but ready and willing to you know just

14:03 there's a former colleague of Miami worked Chevron together many years ago but he

14:08 his own company which was a seismic company. And It turned out he

14:14 really design it this way but it out that most of his employees ended

14:20 being ladies who were very strong geophysicist then took 10 or 15 or 20

14:28 out to have families and then came and you know we're rusty for six

14:35 or so. But he he was invested in them and and he uh

14:42 said obviously the best employees he's got they're mature technically strong you know and

14:50 that kind of stuff. So anyway let's continue to see where your strengths

14:59 and where you want to go. then I'll maybe there might be some

15:02 here. Okay awesome. Thank Great. So regional studies and Just

15:09 this one, we're about to start India, it's a it's a big

15:12 . The basins are huge. They're , I don't know, two or

15:15 miles by two or 300 miles and only a few wells drilled and some

15:19 . So, but any of the information is good and then you can

15:24 the next when you get down and a prospect, then we want to

15:31 to delineate the prospect to find it . And of course all the wells

15:34 we can have and further drilling is to be important. Um So that's

15:43 in the exploration end. And then when there's some production then of course

15:47 gonna want to delineate that even more complete it. And of course in

15:53 unconventional world with horizontal wells completion or the casing and perforating and everything and

16:02 is huge and that might be even more than the well itself to drill

16:11 . So clearly in the development well, logs and in central stuff

16:15 really important. And then later on and doing time lapse features and logging

16:20 continuing to, to go on big importance of well information there. So

16:27 where we we fit in and all levels of um of the development of

16:34 particular prospect or plate. Then we to think a little bit more quantitatively

16:47 about the scale of the measurement that going to talk about. So,

16:52 know, there are cuttings that come of the well and we'll look at

16:55 and the the geologists or the well people would typically start to characterize those

17:03 very small pieces sort of in the of the centimeter area. And then

17:11 the wells drilled, often there will either uh, core plugs or whole

17:18 is taken. So when the wells , we're gonna get some actual rock

17:24 that will be sort of on the an inch or two. If it's

17:30 plug and if it's a full core it might be feet or meters

17:37 tens or even hundreds of feet If recording the horror Holwell, which

17:42 be very, very expensive. But that's kind of the, the scale

17:48 the corner we're gonna get is something one inch to about four inches

17:53 So when you think of the volume the earth, that's pretty small and

17:57 is the well is really just sampling very small thin thread of material I

18:08 in some ways the seismic measurement is the appropriate one because the reservoir simulator

18:15 the engineers are going to do, probably going to have units that might

18:19 something like several meters thick by maybe of meters by tens of meters.

18:24 that's what a reservoir simulator is gonna , you might think, well that's

18:27 big And it's true, but if don't have a big reservoir, we

18:32 care about it anyway. So if only got 20 m by 20 m

18:38 five m of pay, then I'm really that interested because it's too expensive

18:43 get. It is not enough. the seismic measurement with VSP or something

18:50 kind of at a good scale for reservoir simulators, which we're going to

18:56 to evaluate the value and the productivity the residents. But then we go

19:02 to bigger volumes and of course we something that's on the order of hundreds

19:09 meters across so that there's enough goodies there to make it worth our time

19:14 all the energy. So we've got these different skills and with borehole geophysics

19:20 generally thinking sort of from a centimeter to hundreds of meters. That's that's

19:26 scale below that. The thin section that's really important. But it's

19:32 it's really not standard moral deficits. , so lots of different scales.

19:42 going to mainly focus on sort of center part of the of this set

19:47 resolutions. So, and that's that's we're going. So we're gonna talk

19:52 little bit about drilling and then well cross well, dSP portal seismic and

19:59 into a little bit of fracking and seismic imaging. And then again how

20:04 put this stuff together with surface uh, in the petro physical

20:11 a lot of that is core and logging and uh and that's the use

20:17 borehole geophysics for the for the standard person borehole geophysics is really there to

20:28 synthetic seismic grams to correlate. So you're interpreting seismic data, we have

20:36 find a horizon and what what kind rock that is. And so we're

20:40 going to use well logs for generating , synthetic size programs to correlate the

20:44 seismic. And then to do a of surface seismic two to extract from

20:53 echoes. Something about the rock never gonna calibrate all that with well

21:01 . So the integration of surface seismic both ways. We model to see

21:08 seismic would look like. And we seismic and see what rock physics could

21:13 caused that Stephanie. Which courses have had already in the, I've taken

21:25 dr Thompson, I think it was wave theory. And then Doctors owl

21:32 um just the seismic interpretation. Doctor the rock physics. And then I

21:38 finished um potential field with Dr Well, I can tell you how

21:47 the world it is. I was done some work on the Hockley salt

21:54 , which is another thing you might interested in. I'll just mention all

21:57 stuff. Um and one of our Jingjing song did her masters and some

22:02 her thesis on the salt from the salt dome, which is just northwest

22:07 here on highway 2 90 by the outlet malls mall. And So we

22:13 some papers and we just done some seismic and stuff around there. But

22:16 actually went into the mine, we down in the mine 1300 ft

22:20 So it was very interesting. But couple of weeks ago a guy called

22:24 and they've got the lease for the side of the hockey salt. Um

22:29 trying to raise money and put the together and drill some wells because they

22:35 oil production around there. So that interesting. So they sent me all

22:40 material which I can share actually should that. Uh So they sent them

22:47 and I was going through it and had done a big gravity survey over

22:53 Hockley salt. Um Do you know Hockley is? The Yes,

22:59 So somebody done a big survey over and I looked at the interpretation and

23:05 who did it all the processing interpretation bird. So with bird geophysics or

23:14 uh It was its bird geophysical. just know his email. Yeah,

23:24 you go. Well. So I it was amazing to see that he

23:29 acquire the data, but somebody in past acquired all this gravity data all

23:33 the dome and then he processed interpreted gave some good results. So that

23:37 interesting. And then I was going and there was somebody who had done

23:41 to lyrics there and it said as magneto tourist. I thought that's I

23:50 if that's as a musical. But of my former PhD students, her

23:55 was a Z. A. Aziz. So I was talking yesterday

24:01 the guys who who are promoting this . I said that didn't happen to

24:05 with kurt Strack, another professor Adjunct and a student of his the

24:11 said yeah as the disease with I thought oh my goodness. So

24:19 a worked up all the magneto to and came out with a salt picture

24:25 so there you go. Small But to mention that it's also a

24:35 interesting project they're looking for I think little bit of help interpreting it and

24:44 of course money. Uh but they to re enter a, well and

24:48 looking for what they could do in of measurements. So you know what

24:53 do I'll post that. And uh they've sent me, they said that

24:59 could share it so I will post . Then you can have a quick

25:03 at it. It's the logs are . In fact I'll probably show someone

25:08 or tomorrow chris Good. So that's we're going. Um You've seen a

25:18 of these I think so these are of the backup materials. Uh I'd

25:24 you again if you're interested with this . The G. S.

25:28 And S. E. G. quite a bit of material as well

25:30 the S. P. W. . A. And you know to

25:35 yourself plugged back in. I would encourage as you know um joining these

25:43 and as a student you can join of them pretty much for free and

25:49 uh you can go to the luncheons it really does work getting connected.

25:57 I'd really encourage you to uh join G. S. H. If

26:01 not already certainly join the scG and you like the logging stuff the petro

26:06 joined the S. P. L. A. They have an

26:08 chapter in Houston to I want to I joined I'm pretty sure I'm in

26:14 G. S. H. And from the reservoir. I think I

26:17 both of those back then. Great yeah that's that's good. Um And

26:25 to get to if you can I you probably get your plates full but

26:28 you can get to some of the just take an hour or something or

26:32 some of the events then you start get connected and meet meet people.

26:39 You know I can't tell you how times I've been at one of these

26:43 in person myself and somebody says hey don't have to happen to have a

26:46 who would do this to you and think yes and so that Even at

26:54 of the icebreakers five or six years I bumped into a guy who headed

26:57 of the processing companies and he said don't happen to have a student who

27:02 be interested in processing, this is of the G. S.

27:06 Icebreakers. And I said yeah in he's just over there why don't why

27:11 I bring him over? You can him. So we did it right

27:14 that. So there's a that's really for for everybody. Oh good.

27:21 Just just to remember why we think still a big huge place for

27:29 Here's B. P. S. summary report and as you probably know

27:34 . P. Provides this energy release year and it's really a good place

27:41 look for everything to do with They make their predictions. But you

27:47 see just This was from 2000 to . But you can see where hydrocarbons

27:56 . Everything else is good too. the world still consumes 100 million barrels

28:02 oil. Here's the updated one that's most recent that was just put out

28:07 you can see that energy consumption. gray, red and green are all

28:12 , fossil fuels and they're just an . So right now as you probably

28:19 the world is consuming 100 million barrels oil a day. A super giant

28:26 field is 500 million barrels of And we don't find very many super

28:31 oil fields and the world is slurping a super giant oil field a week

28:39 amazing. So you know, we all kinds of other energy too,

28:45 hydrocarbons are huge. Now we see plots, this is the percentage of

28:52 the right, you can see the of each energy source. So natural

28:58 is still increasing. Uh, Cole probably up a little bit this

29:02 In 2022, Uh, oil is percentage has been decreasing, but it's

29:09 been staying, it's actually increasing in volumes up to 100 million barrels a

29:14 . But other stuff is coming which is all good. Um wind

29:19 solar basically here and there is a for us in both of those,

29:26 offshore with offshore wind. You need do all kinds of hazards surveys and

29:31 bottom 100 or 200 m of the floor is really key. So there's

29:34 place for us, even an offshore . So the learning here is that

29:42 is an enormous place for hydrocarbons for decades. We want to do

29:49 We want to sequester one, do we can, but huge place for

29:56 . Now, we've some of that is conventional and this gets bandied around

30:04 lot unconventional versus conventional hydrocarbon reservoirs. this is the plot that I like

30:11 most that defines conventional versus unconventional and means that the reservoir rock has high

30:22 typically somewhere around a mill, a and greater well um at least A

30:36 Miller Darcy's or or darcy I should said. And then the viscosity.

30:44 really conventional versus unconventional is not just sticky the oil is or how impermeable

30:50 rock is. It's both. And we can have an extremely permeable rock

30:57 as the Canadian oil sands, which would think would be conventional. It's

31:04 beach sand. It's completely permeable. the viscosity of the oil or the

31:10 is so high that you can't do conventional in it. So viscosity and

31:18 are required for a conventional or an reservoir as a, as a

31:26 So once again, you can see Trinidad oil fields, for example,

31:29 the bottom are these guys are just , high permeability, low viscosity just

31:43 beat that the oil shales, on other hand, might have maybe even

31:54 viscosity. Oil, the oil coming of west texas is great, but

32:00 low permeability. So that's, That's issue. Those are two types of

32:06 conventional versus unconventional. That we don't to forget when we're talking to Boral

32:15 and we don't want to forget about the up and coming places where borehole

32:22 is useful. And for example, , you can see that mining

32:31 say in the trillion dollar world and pretty big. Oil is probably around

32:42 trillion dollars oil and gas in the . And mining is a good percentage

32:48 that. Mining might be about a as big or sixth as big as

32:52 . So mining and minerals are still big. So there's a lot of

32:59 for hard rock and these other industrial minerals, precious minerals, critical

33:04 , lots of stuff there. So need to log, uh Then of

33:08 we talked about natural disasters and ah can see the devastation that's incurred with

33:19 disasters, earthquakes, tsunamis, you name it. So how can

33:24 help there? And then of course need more and more fresh water,

33:30 and more people, eight billion people is just about to surpass China now

33:35 the most populous country in the 1.4 billion people there. So there's

33:39 lots of people around and we need drink a few liters of water every

33:44 . So we've got to find all fresh water and most of this stuff

33:51 increasing. So all that goes around , you can see that there's something

34:03 maybe 60 or 70,000 wells a year and uh every one of those wells

34:14 logged. So There's something like 60 70,000 sets of well logs a year

34:23 need to be analyzed. So there's of work there and then of course

34:27 , there's lots of drilling, You can see that in the us

34:34 , there's something like 20,000 wells a drone. So that's, and that's

34:40 now. So something like 20,000 sweets well, logs need to be analyzed

34:47 year. So lots of work to . Um Now how how in the

34:56 few courses, how have people been You? Stephanie? Just one final

35:02 or exercises or do you present at or what? Um So with dr

35:09 I had two exams and then he have me like bring a question every

35:16 , like every class, he would start classes, like a question.

35:19 had doctors, how he had like that I had to read and then

35:25 questions on. And then I had exams I think with him. Doctor

35:30 I just had I think I had exam with him and we did exercises

35:36 like itself dr bird. I just two exams. Okay. Oh

35:44 Well will we'll have the final example of one exam for sure. But

35:52 do a lot of little exercises to then just have small exercises and maybe

35:59 many quickie quizzes and just a few things along the way island. We

36:08 have you work up something too and a very short presentation so that's a

36:12 but but we'll we'll firm that up the next day. Great.

36:22 so just uh this will be your mini quiz here and you can meditate

36:32 this. These these are just some just over what we just went

36:45 I think I got pretty much all them. Like how do you find

36:49 geophysics? I did like the three acquiring, analyzing and applying. Um

36:58 the institute, this is what I really know how to answer because I

37:01 thinking like it was gonna be like groundwater environmental like investigations or um like

37:07 to like oil and gas matters um like rock mythology, fractures, permeability

37:13 stuff like that. Is that like of what you're looking for? Like

37:16 were you looking for with that Yeah. I was just, this

37:19 just really to say, you know you drill a well anytime you drill

37:25 well for any of those purposes and you're saying we have all these purposes

37:29 drilling wells. So all the reasons we drill well and then what do

37:35 want out of that? Well? you know the process of permeability,

37:40 rock type, the poor fluids. that's, that's pretty much that was

37:45 general question. Yeah. And then next one the scales was just the

37:50 . Opic. Magaseek, opic and and the micro Yeah. And then

37:56 how, how thick when we talk a micro scale, what's the

38:01 what's the unit on that one? just one um centimeter or no,

38:08 was a 1". Yeah. Any around there. But that's for our

38:14 . That's generally the thinnest that were were typically we're typically looking at maybe

38:26 . And so that's on the order a centimeter or an inch and then

38:30 we go up to vsp we'll be at how big the kind of scale

38:39 vertical seismic profile to work on. that be the biggest topic?

38:48 So that's a matter of meters to of meters. Great. And then

38:54 unconventional resource. Oh the unconventional, was the high viscosity, low

39:04 Oh I I skipped one. The advantages and disadvantages if I remember

39:09 because there wasn't really a slide on . But I remember like washouts being

39:12 big issue for like gravity. Um advantages were just like you're close

39:17 the source, like you're in Um But those are the only thing

39:21 can really think off the top of head. Like right now, you

39:24 , we'll we'll go over those the disadvantage of borehole methods as you

39:30 a borehole. So pretty obvious But uh that's why we're really in

39:40 special world. Like we're saying you've all your surface stuff, you've done

39:44 your aero gravity or aero Magnetics, seismic. You've done all that

39:49 Um Now we're getting really serious and an advantage because we've got high

39:56 we've got in situ properties. It's disadvantage because it's expensive. You had

40:01 drill well and now it's expensive. anyway. Okay good. Yeah that's

40:06 a quick review and then we talked some of the organizations, the

40:13 S. H. Scg. And the S. P.

40:20 L. E. Great. Okay let's take a little break, grab

40:29 water, grab An Advil, grab nasal decongestant. So let's let's take

40:38 few minutes. We'll probably go to around 4:30 or so Stephanie and around

40:42 total. But let's let's take a of minutes and then we'll we'll be

40:49 Shortly I guess. What do people take? About 10 minutes or?

40:55 we usually just do like a quick . Okay let's take 10 and then

40:59 we'll see you back here in Okay I'm just having one more

41:08 Those are my favorite coffee mugs. Calgary coffee bugs. Well we talked

41:16 little bit about this in the field and before but we'll quickly go over

41:24 drilling the wells. So in everything do whether it's surface seismic or

41:33 We've got to know where we are so we have lots of ways to

41:36 that. Just remember that. Typically use latitude and longitude As opposed to

41:46 down to Joe's grocery store. Turn and then take us walk for five

41:51 and go left. Um There's 3 system has been used course for

41:58 many, many centuries and we define basic location from the equator midway through

42:07 polls and then of course longitudes. we know that getting ourselves located was

42:18 one of the biggest mysteries. And course how it was solved was way

42:24 by british watchmakers and have you, you been overseas Stephanie, Have you

42:32 in that part of the world Well put it on the list.

42:39 took me a while to get there . But the british being one of

42:46 big naval powers at the time, trying to figure out how to how

42:51 not get their ships lost. And people say that the European discovery of

42:57 was by Pedro Cabral at 1500. 500 years ago allegedly he was really

43:04 to round africa and get to the Islands. But as the story

43:09 he turned right instead of turning left got all screwed up blue across the

43:15 Ocean and landed in Brazil. So the fact that he landed in Brazil

43:20 1500 exactly why people didn't know how , didn't know what was east and

43:26 very well or how they knew east west, but they didn't know north

43:31 south that well. So it was very complicated. But the the idea

43:38 to try to determine east and west quantitatively. And that was solved by

43:47 a point in London harbor in the and Greenwich and saying that zero and

43:54 a ball that dropped and you can it in the this is the building

44:02 Greenwich and this ball drops just like new york at noon and then all

44:07 sailors, the captains in the harbor see the ball drop, they set

44:11 clocks on board at noon. And that was Greenwich time. And so

44:18 they sailed, they would be say west and of course it's getting earlier

44:24 earlier, but say when it's you're in the middle of the atlantic

44:29 it's noon, the sun is directly . So you know, it's noon

44:33 you are. And then you look your clock and say, what time

44:36 it in London? And so once , you're in the middle of the

44:44 ocean, say, and it's noon o'clock where you are, but it's

44:51 to be later in London. And you look at your clock and say

44:56 clock says three o'clock in London, o'clock in the afternoon. How far

45:02 the world are you? So once , it's 12:00 where you are in

45:18 middle of the Atlantic Someplace and you to figure out where you are with

45:24 to London. Greenwich granite is a of London. Um your clock says

45:33 three PM three o'clock in the afternoon Greenwich and the sun is directly overhead

45:40 you. So, you know, noon where you are. So it's

45:45 hours later in London. So how east and west around the world are

45:54 ? I don't remember how to do three overs later, I'm not

46:06 So you're actually 3/24. So you're of the way around the world.

46:16 there's 360°. So you're 1/8 of So you're something like eight into 36

46:32 uh 4.5. So you're 40 45° the world. So that that's your

46:47 , Your longitude is 45. And people with astro labs and other they

46:54 how to get latitude actually how far you were. So now knowing that

46:58 just that simple calculation, you were hours earlier than London. That's three

47:07 of the day. But we've said there are 360° on the Earth.

47:13 you are 3/24 Around the World Times 60. This case is 45°. So

47:22 at 45° West. And then from high the sun is in the

47:28 you can determine how far north you . And everybody knew how to do

47:34 . They just didn't know how to east and west. So that's how

47:39 did it it relies on a clock it relies on having a clock that's

47:50 to a certain point. So that's you have to have a coordinated

47:57 And that's why Greenwich got the what to be the Greenwich mean time.

48:10 then that became a universal coordinated time UTC or zulu. And also you

48:15 the time and you needed the So that's why they got the prime

48:18 , they said okay through our harbor zero and everything is calibrated to our

48:23 . So now you know everything and how it all works. So that's

48:27 we got a location. And then when the sun is directly overhead,

48:35 know they are in summer. And you can get the the equator.

48:41 a little place in Ecuador. We that just um To go see it

48:46 . It turns out the French built monument saying it was the equator.

48:49 turns out that they did a pretty job. I think they did this

48:52 the 1780s But it's two or 300 off. So it was okay for

48:58 but it's not quite hot and that always useful to know where we

49:05 Do you happen to remember where we ? The coordinates? The longitude latitude

49:09 Houston? I know I remember it being in the 20s um it was

49:16 the 20s and the 90s. So recorded the way around the world from

49:22 U. K. And the tropics at the Earth's tilt around 24°. We're

49:32 tropical here, we're just slightly north the tropics. So we're subtropical.

49:37 at 29°. But when we look at plays often the curse the wells that

49:48 annotated. That's the first thing that gonna notice. So there's two ways

49:51 annotate just longitude latitude decimals above and uh degrees minutes and seconds below.

50:01 uh then just reading maps not quite critical right now, but almost everything

50:08 do ultimately comes down to a we want an X. Y.

50:11 then we want a section. And that's uh that's it. So here's

50:16 , here are the map zones, just getting a little warm in

50:21 Ah it was chilly coming in, can tell you that, although I

50:29 want my my nephew lives in just Alaska and it's typically minus 30 degrees

50:38 in fact it's amazing. They don't the schools, kids go to school

50:44 it gets to be -40°. So that's when it becomes a winter day in

50:52 Yukon and in the Northwest Territories. now people use the U.

50:59 M. System for location with various and ah coordinates there. Okay,

51:08 GPS um now for coordinating finding exactly we are. We we typically now

51:15 the GPS system and that's a bunch satellites and will give us the longitude

51:22 latitude and how that works is we've something like 24 30 satellites that are

51:33 there and they are Pretty high close Geo stationary altitudes around 20,000 km

51:45 And they are broadcasting. So this how it works. They are broadcasting

51:51 chirp with time and place. So again the satellites up there and he

52:00 be orbiting kind of slowly, not geo stationary. So they're orbiting slowly

52:05 he's saying, or she's saying, at this position, X,

52:10 Z. And it's time t and constantly broadcasting that for every position where

52:17 are. So once again that's all satellite is doing. It's just saying

52:24 an X. Y. Z. it's this time then they're moving and

52:30 they go they're just rapidly broadcasting, here, I'm here, I'm

52:34 I'm here. It's this time this this time. So that's what they

52:38 now that's all calibrated and where their stations that are checking their armpits so

52:43 they are broadcasting the right place and time. So that's what they're doing

52:49 the gigahertz band. Now how do figure out what's going on? Uh

53:02 is schematically how it works. So satellite has said I'm at X.

53:14 Y one Z. One at time and broadcast that. And then we're

53:20 here on a boat looks like and receive it now our clock says that

53:31 a slightly different time. It took time to get there. So the

53:37 time is T. S. We it at tr so there's a slight

53:44 in times there and we know how light travels or radar travels. So

53:53 can calculate a distance to that And in fact that's a sphere so

54:02 at first blast. That's all we we just know that that satellite is

54:09 certain distance away or we are a distance away from it. But that

54:15 gives us from one satellite a But you can see if I have

54:19 satellite, it's broadcast. It says here and I said this at time

54:26 satellite to and I received it at receiver to that. I can calculate

54:33 where it is and where I am it. And then if I've got

54:36 third satellite, I can get the there. And the intersection of those

54:43 gives me the my location. So relies on timing again. But that's

54:56 it's working. The sidelines. Just I'm an X Y Z at this

55:01 broadcast we receive it. I don't where I am, but I know

55:05 I received your signal at tr therefore are that distance from me and therefore

55:10 know where you are. So I on this circle or this sphere where

55:15 am. So we can think about another way, suppose I'm at I've

55:30 an earthquake and this is why to a little bit of time in this

55:33 this is the micro seismic of the center earthquake problem too. It's the

55:37 same as the GPS location. The can broadcast at um its signal with

55:53 X Y Z. And time. might receive that with a little bit

55:57 error. And so the satellite signal somewhere there. There's another satellite over

56:06 . It's got the same issue there maybe we've got another satellite over

56:14 So in fact, uh they each errors. So in principle my location

56:24 in here. But all the errors that it could be anywhere in

56:30 So for for trilateral ation In to the problem three is the minimum,

56:40 usually it's not quite enough. So put this into real terms, this

56:56 mathematically how it works. So we've our GPS satellites and they're at a

57:06 and they broadcast the time, we the velocity of the atmosphere and we

57:16 the time of reception. So once , I know what the velocity

57:22 I know the time of reception and chirp little signal said gave me

57:27 so I know how far away that is. So here's the problem knowing

57:34 satellite location and the satellite time find location. So we've got this and

57:44 know we've measured tr that's when we it, it told us it started

57:50 at T. S. We know . So I've got three unknowns,

57:54 many equations do I need? three unknowns. You need three

58:03 Yeah, I've got three unknowns. location. I need three equations,

58:09 I need at least three satellites, My tr my reception time, I've

58:16 got a 50 buck handheld receiver, the clock is not good and maybe

58:22 changed a little bit because the atmosphere cloudy that day and there was a

58:26 and everything. So this is a bit wonky. So you can see

58:30 there's error in, see there's error my receiver time? The satellite coordinates

58:36 pretty good because people spend hundreds of of dollars making those really good.

58:43 my measurements are a little wonky. atmosphere's measurements are walkie so it's better

58:49 I have four or five or six these. Now I've got six equations

58:55 I might even update this guy. six equations and kind of four

59:03 And then I can just do that until I get it. And that's

59:07 GPS works. And what does it out? It spits out my

59:14 This is okay, this is by large, the hypo center earthquake problem

59:23 . If we're going to locate earthquake with the earthquake, how do I

59:29 this problem into an earthquake location problem the sense that like we would need

59:42 know like the epicenter. Yeah. do I how do I find the

59:49 which is the surface location or the center which is also includes the

59:54 So the hypo centers, X, . Z. Epicenter is just

59:58 And Y. So how do I the X. Y. Z.

60:02 of the earthquake? Oh man, remember doing this back when I took

60:08 zing it was, I don't, don't remember. Well let's let's pick

60:24 problem apart. Um You've got this right. Mhm. So in a

60:32 , what do we know now I've a bunch of earthquake stations around.

60:42 do I know their location? Yeah. So in fact now I

60:51 the location of the receiver, I know the location of the source.

60:58 the satellite problem, we knew the of the source. I didn't know

61:01 location of the receiver. Now we the location of the receiver. I

61:05 know the location of the source. does this equation care? No,

61:12 it's squared so it doesn't care. we can turn this around and say

61:19 know X receiver, wide receiver Z , I don't know X.

61:26 Z. Source. And in fact don't really know the source time exactly

61:41 . But I knew no. When received the earthquake and I've done a

61:45 of other tests and I know the of the earth more or less.

61:51 two degree. How many unknowns do have right now for the earthquake problem

61:58 a sense? three Got three. sort of four could that could we

62:09 that using the difference between the Wave and the S. Wave arrival

62:13 ? No. Yes. And and think we did this in my

62:19 that's the reservoir class. That's another to get rid of one of the

62:27 . So you're right. If I the P wave and I picked the

62:31 weight and I've got both those then can subtract the P from the sheer

62:37 the P. And I get rid the T. Not term. So

62:41 exactly right. So I can get of one of the variables the source

62:48 . If I can pick the two . But if we say we don't

62:58 I'm in the ocean or something and don't have a shear wave then I've

63:04 really four unknowns. So I'm gonna at least four stations. Okay.

63:11 you're right. I can write this also for the P. Time in

63:17 year time. And then I've got bunch more equations and it's got the

63:22 source location. One more term for velocity. But I can write all

63:28 equations for P waves. Orange tier . And so I can I can

63:32 if I want to get rid of of the terms and when we're really

63:36 to nail the source location we would all of that. So same

63:43 That's part of why I'm dwelling on a little bit. Same equation.

63:49 But making the terms different. Okay that's how it works. And then

63:57 can just see when we use different . Um You know I tried I

64:03 different instruments and you know the the was somewhere around 10 to even 40

64:14 m difference. And that is because the you know less accurate clocks in

64:24 iphone as well as the the velocity the air was probably changing a little

64:32 but probably mostly the clock in the or the phone or the hand

64:41 Okay, so here's a question for . This wine is a nice wine

64:56 it's called 6 42. And if look at the coordinates on the

65:05 you'll see 42 47 52. And 1058 22 East. So here is

65:16 question for you. Here's this bottle wine that is defined by beautiful coordinates

65:22 the vineyard. Where is that? looking at the numbers? Yes.

65:32 mean, I'm assuming with the numbers it being a very nice bottle of

65:35 , Probably italy. Are you willing bet the bottle of wine?

65:49 good one. Yeah. So in it was 10 degrees east. So

65:58 east of London and then it's uh degrees north. So it's not

66:05 It's farther north in Houston and it out that's Tuscany. And so I

66:17 been there either. You may have there. No, me neither.

66:24 because of this bottle of wine, want to go there. So that's

66:29 a little, a little exercise. , all the, all the metric

66:34 units who were familiar familiar with And once again, for example,

66:42 emphasize this, the project, the project. They've sent lots of

66:50 Some of these logs are in imperial . Us units. A lot of

66:55 lot of the measurements are in depth feet. Some of the, some

66:58 the units are metric units. So kind of a mess. We want

67:04 remember all that, the logs from , sometimes they're an imperial, sometimes

67:09 in metric, We've screwed that up number of times. So you really

67:12 to be careful and be able to bilingual in in all these measurements.

67:25 , wells themselves are typically um and are all given a a certain coordinate

67:33 and you can see here's the system used in the U. S.

67:38 Canada. It was based on the system originally and so its its imperial

67:45 as you would know, uh it's and miles and and townships and

67:57 So you're familiar that one square mile called a section and then farming families

68:05 others talk about a quarter section, a quarter of the area of the

68:11 mile. And then the The what's called? The township is six

68:20 by six miles and it's numbered. you can see in this funny numbering

68:25 . So if you're in real estate you're in farming or anything like

68:29 this is the, these are the , you use a section and then

68:34 township is bigger six miles by six . And then each section is broken

68:40 into quarter sections. But for this play in in Hockley, they

69:03 a base map and they bought the that kind of thing. They give

69:12 a map here, we've got the and when you compute the the fluids

69:18 place, people are going to talk acre feet of fluids that's a

69:24 So we want to know these units in all the in all the exploration

69:30 everything we do, people are gonna and in uh the lease holds or

69:36 much land they've got or how thick play is or what depth they have

69:40 rights to. So that's all Um Decker was originally a funny

69:47 Just how far you could plow in day, more or less or a

69:53 . So eat history. But then get down to again defining areas of

69:58 interest. And you can see that a township six x six section in

70:03 and a quarter section. And the are also numbered in this funny

70:10 So people talk about legal subdivisions, . S. D. S.

70:15 then they quote a well location for the section, the township, the

70:22 , and then west of the The point here is not to memorize

70:27 , it's just that we have to a certain location to all of our

70:31 . And basically there are different ways do that. So we get over

70:37 the A. P. I. to home here, the A.

70:40 . I. Has their numbering system wells and you can see that it's

70:46 number and A P. I. named is gonna be the state in

70:48 case 37 uh the county, the the events. So if we're going

70:56 look up wells then this is how would do it. And then the

71:01 it was drilled it was fracked, was completed that that can all be

71:06 . And so we've got this file well naming now suppose you were wanting

71:15 search out an area such as I right here there's the, I would

71:22 this marquez but uh it turns out there there's a new grad student just

71:28 the office beside me and she's actually Marquet and they pronounce it market,

71:34 you heard it pronounced that way I would assume it was like marquees

71:40 something. But yeah so it's uh pronounce it Marquet which incidentally is maybe

71:51 little bit right because in french this be pronounced Marquet in spanish, it

71:59 be marquez but it actually probably was original. So anyway uh it's a

72:09 impact crater which is cool, it's a big production area and I was

72:16 back and looking at this and there's one paper that's really big one that's

72:20 published and it turns out it was Stuart hall and one of his grad

72:26 probably 40 years ago. So it out that this work was done by

72:31 U. Of H. Master student they got some old seismic and they

72:38 uh um gravity and Magnetics and you basically see it and then we can

72:48 into the databases the texas, railway G. I. S.

72:53 Which I did just to try to what wells are in the area and

72:56 can capture all those wells. So there are all these databases that are

73:03 states have them. There's a lot public information available for many of these

73:08 of these sites in some jurisdictions most the well logs are public. So

73:16 you drill a well by law you to log the well to a certain

73:21 and then you have to post all well logs. So why would the

73:30 make you do that to keep Excuse me. Number one is they

73:44 to know what's there. They want record of what you found. They

73:52 want to make that data available to public. So somebody else can get

73:57 idea and maybe bid on the round next time. So most governments are

74:04 favor of resource development uh because it's . But why else are most governments

74:13 favor of resource development money. Yeah . In what form? Oh I

74:24 well but what specifically do they do oil? How did they get?

74:36 . Yeah but governments don't drill usually else does. But how did the

74:44 get their money? I'm not sure you're the specific answer you want.

74:53 I know what you're asking about like specific where did where did government revenues

74:59 from? Oh taxes yeah and So why do governments want wells

75:14 So they get taxes off of Yeah, yeah, they get taxes

75:20 royalties. So it's sort of why typically municipalities and everything do generally like

75:28 subdivision coming. Are they like an building because it stimulates activity, there's

75:37 that comes in and then the governments tax, they've got property taxes,

75:41 else. So they want the economy really have, they want people to

75:45 jobs, they want activity and they money and so they're in favor in

75:55 of development because they can tax If there's no development, there's no

76:00 and they can't do anything. So governments are in favor of development to

76:07 economies and have people get stuff But also they get money. So

76:13 , that's why the many governments want make these wells public so that we

76:19 view them and say, you know , I have another play concept.

76:24 have another idea where oil and gas be here. Big company acts was

76:29 for big stuff. They missed. had, they had hired somebody

76:33 they had a bad boss, but they missed. And then your

76:39 little guy out there who has looked all these logs that are publicly available

76:43 says, you know what, I these guys missed a big play.

76:49 I'm gonna go in and post the and build on when a land sale

76:53 up and try to get it and go in and try to re drill

76:58 and find some fluids and produce make some money retire in Hawaii and

77:05 the government take a bit of royalty great. So it's good. And

77:11 as Geo people were interested in having data anyway, like us, we're

77:17 , we want to be trained. need I need some real data.

77:21 that that's all why a lot of well logs become public. It's in

77:28 public interest. It's in the government's . It's really in the economy's

77:33 So we look just at where there been oil barrels of oil found and

77:40 know these places, the big Canada has huge reserves. Unfortunately in

77:46 heavy oil that requires steaming to get to be low enough as costly to

77:52 or Mine Venezuela has huge reserves. Arabia has enormous reserves And this number

78:05 260 billion barrels is sort of the number that Saudi uses. They haven't

78:13 very forthcoming. But when they went a few years ago, partially they

78:20 of had to tell people what they their resources are. So that's kind

78:26 the number, it's maybe a lot than that. They haven't looked everywhere

78:32 there's a lot of gas, they even looking for gas before.

78:36 but as you can see the Middle is very, very well endowed with

78:41 hydrocarbons incidentally working in Saudi a few myself, They're lifting costs are probably

78:51 around $4 a barrel, extremely They can produce oil for just a

78:56 dollars a barrel. You know, of the class in texas, You

79:03 , really, really good producers. might be $25 a barrel. That's

79:07 , really good. Somewhere around Most producers at somewhere around $40 a

79:11 , they have to get $40 a or they're not making any money.

79:16 uh Saudi can produce well for about a barrel. However, The whole

79:24 of Saudi Arabia runs on oil. the government takes about 100% tax.

79:30 going to take another $5 or something . That's for Aramco, sorry,

79:37 Aramco's take and then the government is going to take the next $30 a

79:42 or $40 a barrel. So in , what the government's take in in

79:49 , It turns out that they want $40 or $50 a barrel to make

79:55 country work. Aramco can work on a barrel. Saudi needs about 40

80:01 50 bucks a barrel. His oil for roads, education, health,

80:08 pays for almost everything. It's something 50 or 60% of the whole

80:12 So they have huge taxes basically to the whole country, but Aramco per

80:20 needs much less not to be Okay, so where else would we

80:28 ? Look well in basis other basins the world now, the place that

80:37 was just talking about in India are in here, they're offshore and then

80:44 end of an islands are just over so that these big basins in the

80:52 basins here that aren't too explored So that's the, uh, that's

80:58 they're very excited about and their the country is making all of the

81:03 basically offshore available. So it's pretty . Huh? Instantly, I would

81:13 the first time I've been teaching there government didn't allow foreign participation in the

81:20 industry. It was a socialist It had close ties to Russia and

81:25 places. Um, and of course was evaluated as being largely bereft of

81:34 . Well, in 1999, they the constitution to allow foreign participation in

81:39 exploration of oil and gas. And what? They found the biggest discovery

81:46 the world, the Christian Godavari basin year. Guess what? Don't close

81:53 country Then when we look at just is producing fluids from all these

82:03 you know, we hear about Exxon and everything, but here's the reserves

82:11 the various major companies around the And you can see that the biggest

82:19 by far is I'm cool by reserves valuation. Some of the other big

82:33 , we don't hear about as much say sinopac or CNPc or the players

82:43 hear about are all through here, there's some other ones, the state

82:45 companies that are pretty big now just think you probably know most of the

82:52 Stephanie but just remember that upstream is exploring and producing and then midstream is

82:59 segment of the industry that's with pipelines, gathering networks and then downstream

83:09 the whole refining and selling in the operations. So when you talk about

83:15 oil companies, they're strictly upstream. as probably somebody like Apache then the

83:27 of course they are integrated or put because they have all of the above

83:34 explore, they produce, they transport they refine and they sell so those

83:40 your Exxon's shells bp Chevron and then on top of that people talk about

83:47 N. O. C. The national oil companies that's a RAM

83:51 . Um the Iranian national oil company kuwait national oil company Petronas, these

83:59 national oil companies and then IOC the companies are again just the Exxons that

84:05 in multiple countries. So just out curiosity, part of where we're going

84:13 all of the well logs is log . And when we're valuing companies say

84:24 wanted on a very good happy you wanted to go out and buy

84:32 or you want to just buy a of shares an excellent what's it

84:42 So those are the evaluations, this sort of where the rubber hits the

84:47 , we do all our log analysis what's it for? Ultimately it's to

84:50 a reserve of some kind and then cares about that? Well somebody's gonna

84:56 trying to make money and produce Well, how much do I pay

84:59 it? And that's what these numbers sort of calibrated to do. So

85:04 we've got reserves Right now with oil 80 bucks a barrel, if I

85:10 to buy a company, I would pay something like $10 a barrel for

85:15 reserves and reserves means that its produce and has been produced and I know

85:22 can be produced. So you might , Why is that 80 bucks a

85:29 ? If I'm buying reserves, why it 80 bucks a barrel? Um

85:44 mean I would assume because it's in reserve, so it's not like an

85:52 source yet. I'm not sure. , it's still on the ground and

85:58 know, I got to get it of the ground. I gotta separate

86:00 . I got to do basic I got to transport it. I've

86:04 to get it to a place where could sell it and people are going

86:07 be making profit along the way. there's still a risk and there's still

86:12 cost that 80 bucks a barrel is at a terminal in the U.

86:20 . Or in Oklahoma someplace. So uh it's not right to the market

86:32 . So I'm gonna pay something around a barrel now, if I'm also

86:37 the company, the companies are producing and I want to buy This

86:44 but it's producing then their numbers $50-$100,000 I have to pay per barrel of

86:52 per day. That it's got flowing barrels. Why do I,

87:00 this craziness? Why do I have pay $100,000 per flowing barrel per

87:09 So if I wanted to buy an company and these guys have been producing

87:13 barrel of oil a day, I'm have to pay summer on $100,000 to

87:19 that company. I mean, would be because like there's no longer the

87:24 factor and stuff like that. Like , it's just, it's ready to

87:30 . Yeah, right. Am I buying, if I buy the

87:36 am I buying just one barrel of ? No, I'm buying this company

87:42 it's producing a barrel of oil every . So If I want my money

87:51 and say three years how many days that? More or less? Like

88:02 ? It's about 1000 days. So I buy this company, I

88:06 you know what I'm willing to invest the company, but I want my

88:09 back in three years and then I to start making money. So I'm

88:13 angel investor, I'm willing to kind tolerate this for several years. But

88:20 want my money back and then I to start making good money. So

88:26 was 100 bucks a barrel And I'm produce this company's going to produce for

88:31 days. Then that's $100,000 in very terms. In three years. There's

88:41 Company has produced $100,000. So right say I'm an aggressive investor and oil

88:48 at $78 a barrel. They say want $100,000 in the company. I

88:53 how about 70? They say I say, well, you know

88:58 , 1000 days, that's $75 a . That's $75,000. That's what I'm

89:03 to pay. And they're gonna Okay, great, you got a

89:06 or take a hike. We think is going to 110. But somewhere

89:13 there and that's where the negotiation come . But that's why for a flowing

89:17 , we expect to produce it for foreseeable future. That's it. So

89:23 just do a quick little exercise. you are going to value Aramco say

89:34 were gonna buy Aramco. They have that they have 260 times 10 to

89:41 9th, 260 billion barrels of oil . They've also, we know that

89:46 produced something like 10 million barrels of per day. What do you think

89:52 worth a lot. Um mm So, So that right there is

90:25 10. Mhm. I mean just the production alone, 10 to the

90:48 Adding in the reserve at Lake 10 that. Let's see. So once

91:17 you're getting paid big bucks to do valuation. Mm hmm. Mhm.

91:37 mean that's a lot. That's a of zeros. So yeah, but

91:41 , that's why we're paying you the bucks, you gotta get it.

91:58 2.6 12. So like 3.6 times to the 12. I don't know

92:09 , 10 times as well. What that money? It's trillion,

92:13 Okay, so like four trillion. . So these are kind of independent

92:19 . So you're, the production number 100112. So that's, That's a

92:31 . So I'm going to look at number and say you're producing 10 million

92:34 a day. How long can you that? And they say,

92:40 10 million a day. 365 days week. That's say Three billion barrels

92:51 year. Three billion barrels a What's my reserve lifetime? I'm producing

92:58 three billion a year. How long I do that? What's my

93:13 The numbers up there to 60 and producing three billion a year. So

93:19 long can I produce like 87 87 . So, and when did I

93:30 my money back? More or What we say like within a

93:35 three years, three years. So gonna start getting my money back And

93:43 I pay $100,000 a barrel I'm gonna my money back in three years and

93:49 I've got 80 years of profit to . So the bottom line was the

93:57 was something like valuing at a trillion , the reserve value to that more

94:07 $2 trillion trillion. So I'm pretty that this asset, this whole thing

94:16 worth more than a trillion dollars. so for I can tell you Analysts

94:24 over the world were paid huge dollars try to value Aramco. And so

94:31 just had our evaluation in two minutes I'm going to pay $2 trillion dollars

94:36 it. So all the smart guys new york and divide everything evaluated.

94:46 see what they came up for Saudi . Yeah that's more or less how

94:54 works. Hm. So and then do we, how do we get

95:04 reserves where we come into it with and everything? Is that we're going

95:09 help evaluate these reserves. So that's our our contribution here comes in is

95:16 as log analysts and borehole people were to help with these reserves.

95:28 So uh but we did just right we looked at a bit about longitude

95:37 latitude uh we're bashing again how important is to exercise our units to get

95:48 through what the units were working with that we are careful with them and

95:51 we can do some of this mental just so that we can kind of

95:57 general ideas. Then we talked about and how that's done. And then

96:09 in the hydrocarbon world, who's who where is where Great. Any questions

96:19 ? Stephanie or no, I think good so far. Okay,

96:25 Well let's take another Kleenex break, and take 10 and we'll come back

96:31 . Okay, Alright. See you a bit late. Beautiful. Uh

96:46 back all black. Yes. Okay. We've been talking about just

96:58 general principles of what we're trying to and where we're trying to do it

97:03 where people have found resources and now gonna start into the just how we

97:09 at those resources and how we make , how we are going to drill

97:15 well. And here's some pictures, of these areas you might be a

97:21 bit familiar with. Uh huh. most recent down in Galveston's about a

97:31 or so ago. And you can in the, the central picture

97:42 one of that semi Submersible drilling which is great. Right beside the

97:48 . You may have seen the that beautiful tall ship, the historic

97:53 , one of the oldest surviving I vessels around um sailing vessels. And

98:01 some of the very major offshore drilling , such as the mask here.

98:09 and these are actually service rigs that drilling, but there they're doing work

98:19 or servicing the wells in some way then here's another drilling rig. This

98:24 actually happens to be in brazil. guy is offshore Guyana. So we're

98:34 going to make some hole drill some and once again in the in the

98:39 , this can go in a lot different ways. But typically we imagine

98:45 we have explored an area, maybe previous wells, maybe it's more virgin

98:54 or whatever it is, but we explored it, we're interested in

98:59 We have bought the rights to the , the leases. And this is

99:07 , a specific play that I was with a few years ago,

99:11 in California near Sacramento. A friend mine had, how to play,

99:17 assembled the land and uh had a D. Seismic. So we had

99:22 D. Seismic over the area. thought we had bright spots, You

99:26 see high amplitude areas which were interpreted gas saturated levels. So we proposed

99:38 , and then he took this out he sought investors and the investors would

99:44 buy a percentage of the uh Possible . But you paid your money to

99:53 the well drilled. So you you to say 1% of the of the

99:57 for $20,000 or something and then he sell the rest of it. And

100:02 how you work into being part of play and hopefully the payoff findings

100:08 So I got involved and I looked the seismic. So there's a bright

100:14 , which is cool. There's another spot, another bright spot, another

100:17 spot. So it really looked like was there was gas here. And

100:24 we actually drill the well, it brilliant that we deviated the well to

100:30 every one of those bright spots. it was a brilliant technical success.

100:38 are geniuses except it was all nitrogen not methane, nitrogen has a value

100:46 pretty much zero because the atmosphere is nitrogen already. So, so we

100:52 really need any more nitrogen. So were very sad that Brilliant technical

101:00 zero financial success. But we'll maybe a chance to look at the logs

101:08 the logs are pretty nice too. So I did get all the logs

101:13 the well, so that was that partially useful. The problem at this

101:17 was there was methane CH four co with the nitrogen. So actually the

101:22 was was successful. But you have separate the methane from the nitrogen.

101:29 there was a pipeline nearby. That's it looks so good. And you

101:32 directly producing these wells and put them a PG and e California gas pipeline

101:37 they'll pay you for it. But methane has to be pretty pure.

101:44 methane that we could produce was something I don't know, 60% nitrogen.

101:49 you can't put that in their pipeline nitrogen doesn't burn. So what we

101:56 to do and we looked at we'd have to put a refrigeration unit

101:58 the top and if you cool the coming out the nitrogen and the methane

102:06 and basically put it through a big and you can separate and then the

102:12 . So the wellhead unit, the was a million bucks and so With

102:19 reserves and at the time gas was something like $3 an m.

102:23 f. So it didn't make economic . And virtually If gas had been

102:33 an m. c. F., be all living in Bermuda. But

102:39 , we're not. So that's where goes, that's what we're trying to

102:46 . So when we look at how we make wells, how we

102:49 simplest thing and it's done here. even on Cullen avenue beside me,

102:55 are using cable tool, cable tools to lift up a big cylinder and

103:00 it down and you whack your way the earth. And so that's still

103:06 . And a lot of wells have drilled that way. Uh Spindletop,

103:12 was the big transformative event in texas was drilled that way. So there's

103:19 historic figures. Uh I was doing work a long time ago in India

103:26 you can see some pictures here. was one of my hosts showing them

103:35 here was their first big, this the discovery well of the dig boy

103:40 field and you can see it was one of the world's oldest oil

103:49 And here's a photograph of that original . And this guy, this is

103:55 his hair instantly. He never cut hair in his whole life. And

104:02 was kind of a monk guy and was his offering to the great petroleum

104:09 . So I thought, well, for you. So this was all

104:14 piece of hair. Amazing. So some ponytail. Anyway, that was

104:21 . And then the transformative event in history was spindletop near Beaumont. And

104:32 the early all wells in the 1880s 1890s in Pennsylvania, the Great

104:38 Um people were looking and they found little bit of a hill here and

104:46 rule was drill on a hill and really was because hills are an declined

104:55 an declines are often good traps. so incidentally, that's also how Saudi

105:01 was made. Uh stay. Nikki an american geologist a couple of decades

105:08 spindletop looking all over the Middle East structural traps. And he was in

105:15 . And he was looking from bahrain Saudi Arabia and he thought he could

105:20 a bit of a hill, a of a bulge across the bay from

105:25 to Saudi Arabia. This is signing . The american geologist. So he

105:30 over there and he drilled a couple wells and guess what he found gore

105:41 biggest oil field in the world drilled of hill. That was it.

105:48 has that insight and discovery. It's one of the most transformative events in

105:55 Eastern history. Certainly it's the event Saudi Arabia and all of its

106:01 So something simple anyway. The spindletop drilling the hill. They drilled a

106:08 holes and drill on the top of , but it was really drilling on

106:14 side that eventually hit the gusher and can see here it uh, it

106:19 spewing out 100,000 barrels of oil per . So in today's dollars, that's

106:25 million bucks a day was blowing which it's not good, but they

106:33 it under control. And so that the start. Now, the thing

106:39 this is that it wasn't just an . Well, everybody in the world

106:44 we saw this and all of a there was infinite, unlimited energy.

106:50 just liberated the whole world's imagination as what they could do. So,

106:57 of all, there was no real and you can see in the corner

107:01 , people were drilling everywhere with cable . So, uh, it's no

107:10 that shortly after that the automobile, combustion engine, Henry ford and others

107:18 this newfound oil. The whole automobile started big time. And then what

107:27 form of transportation started around that do happen to know? Stephanie 1900,

107:36 Airplane? There was no way you fly an airplane on coal. You

107:45 , you can't have a steam engine an airplane. It's too, it's

107:48 heavy. So what really stimulated the was all of a sudden you had

107:53 internal combustion engine that was small and and you had this hugely enormous source

107:58 hydrocarbon. And so all of a you could put an engine in a

108:04 than air craft. And so really could argue that it was spindletop that

108:11 to the whole automotive and the aircraft , they weren't gonna go anywhere until

108:17 had a light enough powerful enough energy . And now we had one.

108:22 so it's fair to say that spindle was a huge part of that

108:27 Now, once again, we are at the drilling rig, we call

108:31 upper part the Derek. And that again named after the most famous successful

108:42 in history. When you hang most laws say that if you hang

108:48 person and they don't uh go away , if they don't die immediately,

108:56 they're cut down and they're liberated. can't be effectively tried twice for the

109:03 crime. So if the execution was successful, then the person was declared

109:10 , let go usually. So you to have somebody that could really do

109:14 job well. And it turned out thomas there was a criminal himself,

109:19 he was pardoned because he was a craftsman. He built all these hangman's

109:26 and he uh successfully conducted 3000 hangings , which is really bad. But

109:35 everybody started calling a very secure structure hangs things a derek after him.

109:42 to this day we call drilling structures . So that's what it is.

109:48 we've got the derrick and then now use don't use cable tools as

109:53 we use rotary turntables and rotary drill with a bit on the end of

110:00 . This was Howard Hughes grandfather or , one of them uh great invention

110:09 allegedly stole from a guy in a . But however it happened, the

110:17 drillbit company became enormous Tricon bits that the best way to offer the best

110:22 to drill. We can use So in the very near surface we're

110:26 to use an auger that have been for a long time. But once

110:29 made a whole certain depth, then need to use other techniques. And

110:35 rotating drill bits or rotary drill bits the way to go. And then

110:44 we ultimately get a whole area, drill area and you can see here

110:49 derrick, the prime mover, the power to turn the drill

110:58 Now this guy is actually a top . So the, the entrance on

111:02 top right now it's at the But this would go up and drill

111:07 drill drill drill drill down and just the drill then so we have to

111:12 certain things, this is actually drilling at once Drilling two Wells at

111:23 So that was a land drill. various other kinds of offshore drilling is

111:28 drilling case in another. Well we're with drilling near New Orleans. If

111:35 just look offshore in the gulf of , there are lots of drilling platforms

111:39 jack up rigs, semi submersibles, kinds of stuff. This one was

111:46 of interesting uh the colic drilling cason towed vessel. We happened to go

111:57 in that a long, long time . And it was the drilling in

112:00 arctic, in the Beaufort Sea just uh off the Alaska coast near Prudhoe

112:07 , just down from Prudhoe Bay. we were on there and they

112:11 they did find this Western Oligarch field is 300 million barrels huge discovery.

112:16 it was way up in the So it wasn't really economic, nobody

112:19 produce it and you can't get ships easily. So it's still up

112:23 But this uh this drilling case and back to Korea And it stayed there

112:32 about 20 years and then it was back across the pacific to start another

112:38 campaign in Alaska. But you may seen this seven or 89, 10

112:44 ago around there, they were towing and they got in some rough weather

112:50 the total chains and everything broke and thing floated and actually floated to shore

113:00 it got hung up on shore. they did, they did retrieve it

113:08 I think they towed it all the back to Korea for repairs. So

113:13 has a bit of a storied But anyway fun uh fun vessel to

113:19 to be honored to work on and the food offshore is really really

113:23 It's because when people are hungry they grumpy and you can't have grumpy people

113:29 these offshore rigs. So if you lobster three times a day you got

113:35 , you want steak whatever you Can I ask you a maybe stupid

113:41 ? It's more of a curiosity question than a how like the rigs that

113:48 way out there? How do they those or like how do they like

113:55 is the construction of that? Uh well they're all different techniques. So

114:06 example if you look at this Jack rig here, that's actually a

114:12 Okay they the these legs ratchet up to move this they're gonna take the

114:23 up, ratchet them up until the goes down and then the legs are

114:28 stick way up like that and they're tow this with another vessel to another

114:33 . So in shallow water these jack rigs they can maybe the legs might

114:39 down 200 ft or sold but they jack them up and then it's a

114:44 and then you just tow it to new site and then it starts jacking

114:46 until it puts itself way up. that's how it works. Uh These

114:51 Submersible is the same thing. This has big pontoons underwater and this gets

114:58 to a site with a service vessel the one beside it. So you

115:03 with another ship you would tow it and then anchor it. So that's

115:11 that works. The drill ship that showed before the maersk, it's a

115:16 ship with the the drill built right the ships so it just sails out

115:22 then it has thrusters, so propellers around the ship to keep it in

115:27 place. So that's uh the shallow water, Jack down somewhat.

115:37 water, maybe thousands of feet. a semi Submersible with change and then

115:43 deep water. Use a drill ship thrusters on it that keeps it dynamically

115:52 then for production, some of the , they actually build huge concrete platforms

116:06 then basically tow them out and sink . They might be 500 hundreds of

116:13 tall and again they're towed out to . Here's here's a better answer.

116:25 here's one of the drill ships, can see that Jack up rigs with

116:30 legs up, just lower the Jack the legs up a bit

116:34 This is a boat tow it out you can see the different ways to

116:39 them in different but in terms of all of these would be built on

116:47 and then assembled and towed out to location. So for example the upside

116:54 this that might house 500 people that all be built typically in Taiwan or

117:03 Korea, the big shipyards there and that's going to come across the

117:09 it might be assembled. So huge cranes are going to put it on

117:13 of legs and then that whole thing be towed out to sea. Um

117:23 you might even get something like this might be five or 600 ft

117:27 , this whole trestle, put it its side, tow it out,

117:31 it off the side so it's this tower and then hoist and put the

117:39 living quarters and everything else on top it. So they're all different construction

117:46 . If it's really deep water then probably going to have a drilling platform

117:51 anchored and then you're gonna have an , so a floating production and storage

118:01 , a ship pull up beside there will be a full industrial complex

118:07 will separate refined to everything in the . And then actually it could even

118:12 away and deliver the product or it have another ship drive up to it

118:16 offload and take product. So all , all different techniques. Okay,

118:26 , thank you. I've always been , I'm like is it just like

118:29 out there? Like how does that ? Okay, no, there's an

118:36 industry that build stuff fabricates it but big fabrications are in Asia again,

118:42 or Taiwan japan. And so a of the top sides, a lot

118:48 the vessels are built there and then they'll be towed and floated out to

118:54 final location, there might be hundreds miles offshore and then to service

119:00 there are service boats that go back forth to the rig and then there

119:06 hoist on the rig, that a that will take all the materials and

119:10 up onto the rig from the Or you can see that all of

119:15 structures have helipads on them. So fly helicopters to the rigs and then

119:24 the helicopter. And so for people gonna take the helicopter out or a

119:32 boat and then they're gonna put a crane, the cage on it,

119:38 that down to the service boat, gonna get in the cage and then

119:40 gonna haul you up onto the And when you're in training I did

119:48 training in whole of the UK before can go on the rigs in the

119:52 Sea, you have to take about week long school and they they do

119:59 basic training for how to uh how handle emergencies on the rig. And

120:07 when I did the training, they made you jump off and it was

120:12 in the swimming pool but they made jump from something like 30 ft major

120:17 so that you could jump off the if you had to and then they

120:22 had a drop for uh the vessel get authoring. Then they had helicopter

120:30 where because you're gonna take helicopters out the North Sea. Usually if the

120:37 goes in the water then it turns , it turns upside down because the

120:40 on top, so you simulate that the pool, you're in the

120:44 they put you underwater, turn you down and you have to eat

120:47 you have to get out of the and you have to pass that exam

120:51 you don't go after the rig. it was, I was okay because

120:58 like the water and I like scuba and all that stuff, but I

121:01 gave credit to the guys who are of all big guys who didn't like

121:08 water. They were drillers, they like the water, they're big guys

121:12 they spent a lot of time on and I thought man good for you

121:18 be able to get out of this . I mean I kind of enjoy

121:23 stuff, but you should certainly don't it, but, but it was

121:31 I had, so I could do , but they looked at me and

121:34 didn't have enough tattoos or anything on , so they said, you know

121:38 , you're in pretty bad shape because are not tattooed at all and we

121:41 to get that fixed. I okay, maybe later. We'll talk

121:46 that some other time. Yeah, , so there's there's a rigs all

121:52 , all different styles and types now course we're not gonna do too much

121:59 this. But there are all kinds different rotary rigs. You can see

122:02 onshore whether they're floating or or tethered anchored or whatever. There are many

122:08 types of rigs for our purposes we're just interested in making a hole

122:14 the business end of the driller is these various rotating or cutting or biting

122:20 scraping ways to make a hole in rock. We had augers that go

122:29 unconsolidated materials and can make a hole will put in casing. And then

122:34 might for shales have scrapers with diamond on them for other drill bits.

122:43 have these three rotating or the tri bits that crushed the rock, share

122:47 rock and then we inject fluid and the cuttings to the surface. So

122:51 can make some are home then if want to extract corer, there are

123:01 couple of ways we could do it the drill bit. We could have

123:05 quadra drill bit but it's not breaking rock in the middle. So we

123:10 extract a little core or we could this occurring bit that you can see

123:18 through the rock but keeps the center of the actual center part of the

123:23 and then we can withdraw it with whole core barrel. So these

123:30 these are way to make the whole we're in unconsolidated sediments, hard

123:36 soft rock. And then a couple ways that we can drill to recover

123:41 to. So with a lot of offshore drilling, the scientific drilling,

123:54 something called a riser which is basically casing. And if there if it's

123:59 about putting material on the ocean then you might have to bring all

124:06 material, the drill material up to surface, treat it likewise with the

124:11 mud. If you're not using sensitive mud, then you can just do

124:16 open hole without a riser without No in drilling we're crushing the rock

124:31 we need to remove that rock so we can drill ahead. We don't

124:34 to just keep on crushing the same that we've just already drilled. So

124:38 waiting do that is to circulate fluid that were circulating fluid through the drill

124:45 and we're bringing the cuttings and the and everything else from the rock.

124:53 it to the surface and getting it of the hole. And then we're

124:58 look at it those that we can our geologic logging. So that's all

125:02 . Now the fluid that does that is called the drilling mud and it's

125:11 water, fresh water and land, sea water in the ocean, marine

125:17 and then it's got a bunch of in the mud. So one of

125:24 biggest ingredients is bentonite and bentonite is clay and it lubricates the drill

125:33 It cools it, it grabs the and brings them back to the

125:40 Plus as the drilling fluid permeates into rock, it covers the side of

125:48 border wall and creates a gelatinous lake called mud cake. So that's all

126:01 . Um It has a lot of properties. We also use it in

126:06 . Has anybody made wine before and ? When the, sorry Stephanie said

126:14 have not have to try it It's fun. I used to,

126:20 used to make it quite a bit I would take it to friends parties

126:25 stuff like that and they always would in the end, you're welcome to

126:31 to the party if you do not your wife, if you're gonna bring

126:36 wine, you are not invited. okay. So my winemaking skills need

126:45 little help. But nonetheless, when make wine it's fermented and then typically

126:52 put bentonite in it and the bed occlude zor agra gates with residual protein

127:01 there's always a bit of skin, skin or seeds or something in the

127:05 . So the bentonite is attracted and with other proteins in the wine and

127:12 you filter it. So you filter bentonite and all the other stuff in

127:18 mix. And then that purifies the . Nobody likes thick sediment of junk

127:25 the bottom of the wine glass. you have to filter and bed night

127:29 with that. So when we once , when we drill the hole because

127:37 formation has pressure in it, the thing we have to do is control

127:40 well and what that means is we want high pressure fluids coming from the

127:46 and blowing up because that is very as we found out with a condo

127:53 lots of other disasters. So consequently a standard case the pressure on the

127:59 is gonna be slightly higher than the of the formation so that there's slight

128:05 of the mud into the formation. that's because we don't want the formation

128:12 coming out at this stage because we're producing anything right now, we're just

128:17 to drill the well and we're trying test and understand everything. So I

128:20 to be conservative but I have to the mud wait a little bit higher

128:23 the typically higher than the what I to be the formation fluid pressure so

128:29 I don't blow the whole thing out bad nights heavy so we can mix

128:35 mud to have a certain weight that control the pressure of the formation.

128:42 also because of that the the fluid the formation or the fluid from the

128:50 seeps in or flows into the formation we call that the invaded zone and

128:58 might be one part close to, , this might be just a couple

129:02 that is completely flushed of the natural . So this is all full of

129:08 drilling mud products. Then there's a area where there's some mud stuff in

129:14 and then there's the virgin formation, a foot or two or a meter

129:17 something away that has no effect of well in its fluids. So we

129:25 to deal with all those. So first log though that we're going to

129:41 is really the drillers log that's gonna us about the pressure on the drill

129:46 , the rate of penetration, how we're going, that kind of

129:51 Then they're gonna be cuttings. As mentioned, the drilling mud is bringing

129:56 the cuttings from the drill bed out the well and we're capturing those at

130:00 top and something called the shale And then we have a well site

130:07 , typically the low lady on the in in terms of the profession was

130:13 go and sit the well on, site or close by and going to

130:18 at all these cuttings, the low on the totem pole, But it's

130:23 to do. And so you see this stuff that's all coming out as

130:27 and then you're going to characterize that keep a log. Now there's a

130:31 if the well is 10,000 ft what's coming out of the top is

130:37 something that was an hour ago. there's a little bit of a leg

130:42 when this stuff comes at the top we describe it to from what depth

130:46 came. And we know what the is for that more or less.

130:50 you create this geologic or this mud and that describes the basic mythology as

130:59 function of depth. So this is good original log and this is going

131:04 be a geologic report, the type rock, how big the greens

131:10 And then we're also going to have a fluid sampler and the gas sniffer

131:18 going to get chromatography. What kind gasses are there? What kind of

131:21 there? And we're gonna have So there's our first log. So

131:38 again, strictly from the well, , here's another example of what we

131:44 expect and this is now a gas chromatograph. That's saying what kind of

131:52 coming out of the well from which and We might be interested in straight

132:05 , there might be other stuff in . We're probably gonna test for things

132:08 helium helium is extremely valuable now. so if we get 1% helium

132:16 So that's the kind of log a is a is a representation in depth

132:21 any property in this case. We've the mythology and the and the gas

132:29 . And over here we've actually got wild dogs. Now, we talked

132:38 just about drilling vertical wells, but know that actually in the US right

132:46 , almost all the wells drilled ultimately horizontal wells because we're mostly conventional plays

132:55 been already discovered and are producing. the, as you know, the

133:01 plays in uh new york where it's pennsylvania, west texas, new

133:14 south Dakota, North Dakota Montana. these are unconventional plays and that the

133:18 are so impermeable that we have two refraction To make that economic. You

133:27 want to drill through 20 ft of and crack it. That is too

133:33 and doesn't produce enough. So if got 20 ft of pay, but

133:38 can drill 2000 ft through it, I can effectively have 2000 ft of

133:46 . And that's the point of horizontal . Is that once you're in the

133:50 , you can draw forever thousands of in it. And then you frack

133:56 , you've got thousands of feet of . So that's, that's the news

134:02 there, horizontal drilling, how you that is using a slightly curved drill

134:09 that can bend a little little bit you pump high pressure fluids down

134:15 The high pressure fluids turn uh sort an auger and then the auger turns

134:19 drill bit and you can drill Good. So that's how we drill

134:29 wells with down hole drill bits that , that are turned by hydraulic

134:45 So Stephanie, why don't why don't take a little break it's you want

134:50 take five? Okay we can take quick five. Yeah. Whenever you

134:56 tired of listening would be it's the thing about being in person is we

135:00 do little exercises and walk around and . Sitting sitting by your computer is

135:06 of hard for hours on end. so let's let's take five steps back

135:14 shortly. So we're talking about horizontal which is the this fabulous technology that's

135:29 an enormous amount of resource to be and recovered and west texas. Now

135:37 think produces something like six million barrels oil a day. It's just enormous

135:43 much oil is coming out of west . It's all horizontal drilling with hydraulic

135:50 . New Mexico is I think now maybe the second biggest producer in the

135:56 . S. Which is shocking. used to be uh you know Alaska

136:03 , North Dakota. All these I think New Mexico is now producing

136:07 than one in that 10.2 million barrels oil a day. So the southeast

136:12 of New Mexico is huge. Again all unconventional and horizontal drilling. So

136:20 how we make horizontal hall. And it can be pretty sophisticated straight horizontal

136:26 laterals, multi level multi laterals. you can see that these spines can

136:38 uh get to every part of the . So it can be really fully

136:49 . So once again the basic idea the rotating drill bed in this case

136:54 , creates a whole fluid comes evacuates that material back up the Angelus

137:01 that creates the whole. Then if hole is if it's in a carbonate

137:06 something really competent you might be able just leave it but typically not you

137:11 to put instant metal so the whole collapse and you can control whatever fluids

137:18 here. So there's casing put in then um the whole is cemented.

137:30 all the cement works is the cement injected down the inside of the drill

137:36 comes out, the outside comes out outside of the casing between the casing

137:43 the formation and then sets up or between the casing and the formation that

137:49 the casing to the formation, but also doesn't allow fluids to go up

137:56 the well. So what we want do is make sure that there's no

137:59 that fluids could come up outside the . And so that's the kind of

138:08 that's done here is that all the , all the cement is brought up

138:13 put in the cement is injected down casing or pipe or whatever we've

138:22 And then cement the outside of the . Then there might be uh deeper

138:33 and we might put another set of in there. So casing big diameter

138:38 drill more casing of another diameter and drill more. So we've got all

138:43 different levels of casing depending on how the well is and how unconsolidated sediments

138:49 . So in a deep marine well might be three sets or four sets

138:53 casing depending on how deep the well going. So you can see that

138:56 got to really plan the volumetrics of cement and the design of the well

139:01 construct it so that we can get deep as we as we need to

139:10 . So once again the first part the will is going to be a

139:13 hole in the top. We're going set surface casing or conductor casing.

139:21 that's almost always the story because even the water well you've got to protect

139:27 waters from shallower waters. So we're drill a fairly big hole at the

139:32 and put in a steel pipe and . And that's going to be our

139:38 casing or what was going to conduct drilling a conductor point. So we've

139:46 that done. Now then we're going drill more. Now I'm going to

139:55 in another whole set of casing and and then maybe another whole set of

140:06 and cemented. So by the time the surface you can see there there

140:15 be four different casings between the produced and the formation in the near

140:23 So people spend an enormous amount of and effort to make sure that if

140:28 a fluid that comes into the well that we're trying to produce, it

140:33 escape into any of the other And we're containing that fluid everywhere because

140:39 fluid is probably hot. It might H. Two S. It might

140:43 other toxic gasses, so, but kinds of good stuff. So we

140:49 to be able to really manage it control it. So then when all

140:59 casing is done, everything's fine, going to the well is gonna be

141:03 , and now we're gonna ideally flow into the in the production tubing or

141:12 however, were producing the fluids to surface. And then we're gonna probably

141:18 a pump, Jack on the nodding donkey and pump this. If

141:23 needs pumping, high pressure formations aren't need pumping. But most of the

141:30 that we've got here needs some help it's not that high pressure. So

141:35 need to pump it to the in the nodding donkey with its big

141:39 sucker rod down to a cylinder at bottom, brings a column of fluid

141:47 with each stroke, and then that keeps on pumping until we get something

141:51 the surface and then we put it a pipeline. So, as pioneer

142:02 would say, drilling well is really , just figure out where the oil

142:07 randa rig drill a hole casing cement and complete boom, that's it so

142:18 . So drilling the hall might be millions of dollars. And then completing

142:21 with this casing and perforation might be 15 million. Now you can see

142:28 they've used mm. What does mm ? And you will be like multi

142:40 ? I'm not sure. Did you happen to watch the Super Bowl?

142:46 actually didn't I didn't watch the Super this year. Yeah, I didn't

142:51 very much of it. But do remember how they described the Super

142:57 It was remember there were some letters with it? No, can you

143:12 this? They know they called it Bowl. L. V. I

143:22 that. Do you recall what that ? 50 something? Yeah. So

143:31 . Is 50 in roman numerals, . Is five and I is

143:37 So it was Super Bowl 57. in roman numerals 50 as L

143:50 100 is C. What's 1000? is in Roman numerals. Would it

144:10 like see something? Well, you say, I'm sorry, that was

144:18 my time. Yeah. Way before time. So, um, The

144:25 , the number for 1000 is And so now this is why I'm

144:31 this is that this is a screw . That's confusing. And so mm

144:41 1000 times 1000. So that's a . So in the english system and

144:48 in the oil industry people use capital capital M to mean a million.

144:55 in the metric system, what does stand for meter? Yeah, small

145:04 and then capital M is that mile mega mega. Okay. I was

145:12 , I don't remember. And mega a million. So capital M in

145:22 metric system means a million Capital In the imperial system that uses roman

145:28 means 1000. So when you look this 15, we have to put

145:34 in context these guys are quoting in imperial system. So M means

145:39 So it's 15 million bucks. If was a metric unit, that would

145:44 of look like 15 million million, would be 15 trillion. So we

145:55 to watch out that roman numerals are used in the oil industry in the

146:02 . S. But it's confusing because , em in the metric system means

146:08 , which means 10 to the which means a million. Em in

146:11 oil industry often means 1000 because it's roman numeral. So just watch,

146:18 watch for that. So anyway, how to drill well. Um now

146:22 not talking strictly just about oil we're talking about water wells. And

146:30 with the water well, we're typically to drill and then put in some

146:33 of surface casing um to make sure we don't get anything in the near

146:42 water. And then probably case with polyvinyl tori, just plastic and then

146:49 perforations. So we could produce water , we we drilled a couple of

146:54 wells that Lamarche 10 years ago and use them for training all the

147:06 And so that's the typical water well construction and you can see that

147:21 most farms or even smaller municipalities or will have some kind of water wells

147:29 are servicing them. Um The big , the big first operas around here

147:39 somewhere around 400 ft deep and there's evangeline and other aquifers that are flowing

147:45 water and you can drill for Um So somewhere around that depth.

147:54 what's game and drill the hole, in some kind of casing, maybe

147:59 or two at Lamarque, we have 20 ft steel casing and then polyvinyl

148:04 PVC pipe. And then we blocked off because we're not trying to flow

148:08 there were just using the wells for . Okay, so now we start

148:17 think about how we're going to make logs and you think the most efficient

148:22 to learn about the formation is to about it while you're drilling. And

148:27 did that with the liquids, samplers the gas chromatograph and the cuttings.

148:35 we when we're drilling we are doing logging but we could also put some

148:43 sophisticated instruments near the drill bit. in the in the drill string itself

148:52 the business end of the drill the drilling into the drill string.

148:56 could have instruments in this hole sub . So we've got the drill

149:06 but as part of the drill bit got all these instruments. Now this

149:13 that when we're drilling we can make natural radio activity measurements and we can

149:19 that to the surface and then we'll a gamma ray or natural radio activity

149:24 write while drilling. And so that's logging while drilling or measurement while

149:29 M. W. D. Or . W. D. Then we're

149:35 maybe thousands of feet. How do get that information to the surface?

149:41 how do you think it's done? Wouldn't it just be sent in like

149:53 I don't know how to explain it like signals in a sense. Yeah

149:59 definitely got to send it in some of signal sometimes code something. Um

150:04 know normally we'd be thinking of doing via radio but radio waves don't propagate

150:11 well through rock. So we can't wireless really well radio wireless. And

150:22 because we've put together all these pipes we don't really want to short circuit

150:29 pipes of the formation and everything We can't really use wires very

150:37 So something really really simple is used it's called mud pulsing because remember this

150:45 tool is in the well and the full of fluid. So I can

150:50 a little apparatus that has pressurized mud it and I can open and close

150:57 of the uh reports and that's going give me a little pressure pulse.

151:06 I can just do something like Morris or ones and zeros pressure, no

151:13 and I can pulse the mud and pulse is going to travel right up

151:17 the top of the well and I have an acoustic sensor there that's measuring

151:21 little mud pressure pulses. And I get this code from just mud

151:29 that code is going to tell me the number was over the, let's

151:32 the last foot of drilling. So mud pulsing communication. As you can

151:41 the bandwidth or the bond rate is low. You can so if you

151:53 about your internet connection that you're paying with a T. And T.

152:00 whoever your provider is. What what's the frequency rate? What's the

152:06 rate? What's the band with of internet connection? Do you happen to

152:11 more or less? I actually have idea. So when you're paying,

152:19 paying for internet right now at home how fast does it transmit information?

152:29 you remember any any of those I mean it works pretty good.

152:38 yeah. Well that's the most important . It works. It works just

152:44 . But when you think you've got video stream, I've got a video

152:48 of you and it's pretty close to time. When you think of all

152:54 pixels that are getting transmitted. So transmitting very fast something probably like 50

153:04 body and what that means is 50 bytes of information a second. So

153:16 you think of a digital camera might a megapixel or one million pixels,

153:21 elements on the screen, You're transmitting screen effectively 10 or 50 times a

153:31 . So you're up around 50 or mega bod. And if you're paying

153:38 lot you might be getting 500 mega . And if you're paying a real

153:44 load or your service is really It might be a gigawatt, it

153:50 be a billion bytes or a billion of information the second. So those

154:00 our kind of our standard digital data right now extremely fast. And of

154:08 it's been increasing. It used to that we just had telephones, telephones

154:13 probably 50 kHz, 50,000 pieces of a second. And then we went

154:22 , you know, internet over phone and all that kind of stuff.

154:25 was fairly pathetic by today's standards. now we're on fiber optic links and

154:31 and going extremely fast. So our connections are up around 100 megabytes,

154:38 million bits of information or bytes of , Mud pulsing is probably around

154:46 It's really slow. It would give one pixel of this picture every second

155:00 . So to build the image of on the screen would take about an

155:08 . So it's really slow. But the way it is. So that's

155:12 it works. Just an acoustic pulse the fluid and that brings the information

155:18 we just record it and say, that's a five, wait another

155:23 that's a six, wait another that's a seven. And that is

155:27 gamma ray log. We plotted up then we know that we're drilling

155:31 say a foot every 30 seconds. I plot that out as a long

155:43 . Now it we might have a ray, we might have resisted

155:47 we might have acoustics, we might anything in there on the drill section

155:51 the bed. And that's how we transmit up the well received the those

156:00 pressure pulses decode them and create a . So just the the state of

156:13 earth. We want to know how hot does it get as we

156:18 down and you can see some examples , temperatures now, a very standard

156:35 gradient, how fast it gets, hot is something like 2 to 3

156:41 C per 100 m. So as go down here, we go down

156:47 kilometers, we get deeper. We see that in temperature, it just

156:51 hotter. So now if the surface is hot, then we hang the

157:04 gradient on the different temperatures of the . So, here's a question for

157:13 , If we have 2°. See, , let's do it in feet,

157:22 we have a one F heat change 100 ft. So my thermal gradient

157:33 getting warmer by one F per 100 . What is the temperature at 20,000

157:41 ? If my surface temperature is say degrees. So the question is 20,000

157:55 deep one F per 100 ft. the temperature Would it be to 27

158:17 uh degrees F. That because it's ft 20,000 so it's 200 degrees plus

158:29 27 degrees. Yeah I was actually so just from the graph I was

158:37 it more simply. Yeah well that's too. That's the that's the way

158:44 do it ultimately. But just from graph just so you're familiar with how

158:47 use the graph. Just take a look at the graph and see.

159:10 wait. Okay so we're 27 Okay So I said 20,000 ft and

159:23 I said one degree F. Per ft. So pick that line.

159:33 then unfortunately the top line doesn't have after it just has degrees C.

159:44 you can convert that. Was it 1 25 line. Yeah 20,000 ft

159:51 go over here. 1 20 525 C. Is 9/5 is 25.

160:09 95th is 25 times nine Which is 1 to 25 F plus 32.

160:24 it's about 257 degrees Fahrenheit. Right so you remember the conversion degrees

160:34 . Is 9/5 times degrees C plus . That's to get it to be

160:40 . So degrees F. Is equal 9 50 times C. Plus

160:46 Yeah. 2 57. Okay So Is it boiling down there?

160:55 you be able to touch the rock 20,000 ft? No, No boiling

161:03 2 12. So this rock is than boiling water at 20,000 ft.

161:11 it's a that's something that we kind forget your drilling well or whatever you're

161:15 . Yeah it gets warmer. I but it gets really warm So 20,000

161:23 . Well the water is boiling good you can see it varies with with

161:35 areas. So again say around 10,000 we expected to be around boiling Converting

161:48 3000 m 10,000 ft. Some around . Now if we happen to be

161:56 Iceland, What you're thinking about the gradient in Iceland? I'm sorry,

162:07 you ask that question again? My was talking in the other room.

162:11 , you were in Iceland. What you expect the geothermal gradient to be

162:17 in Iceland? Well it's colder so I'm sure there's like permafrost or

162:28 but wouldn't it be but wouldn't it be the same gradient? Just you'd

162:34 to go deeper for it to just hotter. Well in some ways but

162:40 the geology of Iceland? What are what are the tectonics there? Oh

162:48 that's mostly like volcanic, in fact is a volcano. Yeah, so

163:00 a volcano. And do you ever volcanic eruptions there? I've seen some

163:06 . It's very lava. Yeah. what's the underground of Iceland look like

163:14 feel like, oh now I understand you're saying. Okay, it's probably

163:18 hot lava. You got it. that moment of realization, that's a

163:25 thing. And I was just it's cold there and I was

163:27 oh wait no, we're underground. you know what, it's important because

163:33 , as you just saw in the graph the gradient, the temperature excel

163:39 from the surface temperature down. So it's permafrost, you start off pretty

163:44 . But you can see the numbers in Iceland, it it may start

163:51 cold like it's zero, but it take long to get pretty hot,

163:58 you would expect. The thing is bleeding volcano. So You can see

164:05 by the time you're down even 500 it's already 250°C it's extremely hot.

164:15 part of the reason here is that know that normally when we talk about

164:20 gradients, I always keep in my three degrees C per 100 m,

164:24 is great as a worldwide average. we always want to keep in mind

164:29 those special cases like volcanoes in Iceland it's a little bit different.

164:41 So, uh when we're thinking about properties to, we can think of

164:50 things, Number one, how much can the material hold and then how

165:00 does the material heat up? And we're working with a geothermal player,

165:05 geothermal area and there's a lot of of that around here because the

165:09 the fluids can be pretty hot uh other parts of the country like san

165:14 , it's extremely hot. So with energy, we're interested in the rocks

165:20 attributes. So the one attribute how much energy does it take to

165:28 a volume of rock by a certain . That's the heat capacity, and

165:32 can see that the heat capacity of is pretty small, you don't need

165:43 heat to raise it. Um attempt make it harder now, how fast

165:53 you do that? This is a bit different. Its thermal conductivity uh

165:58 also pretty high, in fact the . So in fact, you can

166:03 that rock up to a reasonable capacity fast. High thermal conductivity.

166:14 it's not as high as some of metals, obviously these guys conduct heat

166:18 fast. So you can see that doesn't conduct heat very fast, you

166:32 put a blowtorch here and my finger and it's not the air itself is

166:39 going to conduct heat that fast and not gonna, it has almost no

166:44 to even store heat. So it's good insulator thermal insulator, that's why

166:51 your, in your house and everything . Air is a great insulator to

166:57 , just air between them, as as there's no breeze, the conduction

167:02 very low so that air is a um insulated. Now you can see

167:12 , you know, water itself actually heat relatively fast compared to air and

167:20 to other materials. No water doesn't heat that fast, but when we're

167:25 water we can lose heat pretty fast relative to air and everything else,

167:28 conducts heat away fast. So those some issues of of thermal aspects.

167:45 , uh I did have this opportunity long time ago in a session to

167:52 on fire and I've seen this in and stuff, but I didn't believe

167:58 could be done. So we were a dare to be great thing and

168:06 built the fire and we built a bonfire and it was red hot.

168:10 fact it was so hot that I my watch on and it would burn

168:13 just having my watch there. And the fire all went down. It

168:17 still red hot, you can't tell here, but it was red

168:21 And then the instructor walked across these hot coals and I thought well you're

168:28 drugs and you probably sprayed your But then I was with a friend

168:34 mine and she was the first person actually do it. She walked across

168:39 burning coals in her bare feet. really was. Made me mad because

168:44 did it so that I had to it. And so I walked across

168:50 burning hot coals and bare feet and know what, you actually can do

168:56 . So after I done it I to ask myself why can you do

169:02 ? How can you walk across this ? And it just turns out that

169:07 a very very special case. Wood wood coals have extremely low thermal

169:18 Is there hot? But they can't the heat very fast. So if

169:24 walk across it fairly fast you're gone your feet get burned. It looks

169:33 incredible. But you can do it , you can't stand there for very

169:40 . But if you just walk briskly it you can get across it before

169:44 feet are burned. And so you actually do it. And the reason

169:49 can do it is the thermal conductivity the heat capacity of coals which isn't

169:55 high in either case. So you see where coal is way down

170:05 So there we go. Now the temperature. And then the other aspect

170:09 pressure. And we have to ask is the pressure as we go

170:16 Now, it's just a column of has a certain pressure, something like

170:25 meg 10 mega pascal's per kilometer weird or something like in in in in

170:34 of P. S. I pound square inch per foot. So that's

170:38 the pressure. A little static is way to the rock. The rock

170:42 almost twice as dense as the water twice as heavy. So it's pressure

170:46 twice as much. So that's little pressure. Just if you go swimming

170:58 you've been swimming and have you ever swimming and dive down deep when your

171:02 hurt? Yes. Yeah. So just the pressure of the water pushing

171:10 on your ear drums and your ear are really really sensitive. So with

171:14 water pressure they hurt and they say got too much water pressure and so

171:19 have to blow your nose and that your ears out and relieves the

171:26 But what you've done is you've you put high pressure air in here

171:30 equalizes the same as the high pressure outside. So that's what you do

171:35 you're scuba diving or anything else, equalizing the pressure. So 30 ft

171:41 is one atmosphere of pressure. So now we're at sea level we've got

171:47 atmosphere of pressure, honest, we've a little bit of pressure if I

171:50 30 ft underwater, I've actually got there's the same amount of pressure of

171:55 whole atmosphere. If I go 30 underwater, that water column is one

172:01 of pressure. So at 30 ft or 33 ft to be exact 33

172:07 underwater we've got two atmospheres of pressure us. If I go 5000 m

172:23 18,000 ft underwater, I'm gonna have atmospheres of pressure on me. So

172:34 why these tools have to be enormously to not only resist a couple 100

172:42 c of heat, but hundreds of of pressure. So the tools have

172:47 be built to stand high temperatures and pressures. Now, once again,

172:59 we've drilled the well, we're hopefully a happy story. We've got oil

173:02 gas or something and they're symbols for . And you remember what's the symbol

173:12 oil or the color of oil versus color for gas. Oil is typically

173:22 and gas is red. So when see that on maps or in cross

173:26 or anything red for gas, green oil. And you can see in

173:36 area, for example, there's lots green oil wells, um Probably a

173:43 little red for gas wells. What sour natural gas, like what makes

173:54 sour sour means that it's contaminated with sulfide H two S. So H

174:02 S is sour. We actually make us standards at my job. So

174:14 like create calibration standards and like mineral standards and stuff for oil and gas

174:19 . So we make H two Oh, that's interesting. Well that's

174:24 absolutely essential. Um that's probably one the most important things on a drilling

174:31 Because H two s. As you , is extremely toxic. So,

174:38 know, I don't know what the , you could probably look up the

174:41 but just a few parts per million uh very bad for us.

174:48 Two S. Is a big So sour gas um there's sulfur that

174:54 in the system and that produces Two S. And if we breathe

175:01 it's really really bad for us. fact when I was a student,

175:05 was working for Chevron in California and were about to go on one of

175:10 offshore rigs called the platform Grace that was producing in the santa barbara channel

175:15 California. And we all had to a medical check before going on and

175:21 was okay. But they checked our , which I thought was kind of

175:27 . But it turned out this was a tragedy. They knew there was

175:31 H2 s. um Production in this . Guys all went in, they

175:37 face masks, they were doing everything and one of the guys perished unfortunately

175:41 a fatality due to H2 s And there was an autopsy and everything

175:47 done. And it turned out that guy had a perforated eardrum. And

175:53 breathing there was enough H. Two . Gas that went around his gas

175:57 that went through his ear drum and breathed it and there was enough through

176:01 ear drum to kill. So and was it was kind of weird.

176:07 was in a vocal group singing with guy who was in a position maybe

176:12 bit like yours, but he was safety officer and a chemical company.

176:16 I was telling him this story about to this offshore, we were chevron

176:20 he was just looking at me with eyes because he said and this was

176:24 years, there's only a few years , was many years after the

176:26 He said, I can't believe you're that story. We just heard that

176:33 as one of the definitive cases that studies now for H two S.

176:40 and hazards. So uh this H s sensing equipment is really, really

176:47 . Sour gas is fairly common and you're on a sour gas well there

176:53 all kinds of standards that have to upheld to make sure that people are

176:58 in in drilling. So all the will be thankful that you're making good

177:13 now just in terms of some of wells you can see here just the

177:18 , the deepest well so far is up in the arctic, 40,000 ft

177:26 and it took 20 years to drill . And it went into ancient ancient

177:31 huge operation to drill over 12,000 m 40,000 ft. This was back in

177:40 day when Russia did some good So really interesting. Well then uh

177:52 extremely deep. Well I think this still the deepest one in the US

177:59 birth of Rogers. Well in Oklahoma is 30,000 ft. And uh it

178:09 liquid sulfur. So not just Two S actually full on liquid

178:13 And you can see there are a of other deep wells. So that's

178:27 . Mhm. I'm gonna have to that deep water well because if it's

178:40 true vertical feet then it would be would be the deepest well outside the

178:48 Russia. Mhm. Anyway there's some that are that are really rather

178:58 Um This is uh in the in news this came out as the deepest

179:12 well in the world. This isn't cold of the offshore Russia Exxon build

179:18 with Rosneft and they call it the oil well in the world. But

179:22 really wasn't, it was the longest well. And you can see there

179:27 drilling here, It went something like 40,000 ft horizontal. So and it's

179:39 . Um When you talk about the depth, that's the total length vertical

179:51 just taking the vertical component. So can see here here's measured depth,

179:56 vertical depth are the same. But the wells deviated then the measured depth

180:00 the length is much longer than the vertical depth. So you just want

180:05 remember that with well likes that. is incorrect. The well world's

180:13 Well no it's not it's was the , well the deepest well is one

180:18 the other ones you can see here the true vertical depth T.

180:23 D. Here is only around 2300 . So that's not that deep but

180:35 certainly not. And then this was one of the one of the cases

180:46 celebration for the most productive well in . And that single well over six

180:53 produced almost a million barrels of So that was pretty good.

181:03 Okay so uh just remembering can you these Stephanie? Um howard? So

181:19 just it's drilled using casings and stuff that and different bits. What are

181:26 penetration effects? What do you mean like effects? Well when we're drilling

181:36 well what happens with the drilling mud everything? Oh well it has to

181:45 like a little pressure and you want make sure you don't over pressurize cause

181:50 a blowout. Um But it's just like a lubrication almost. Yeah so

181:59 fluid invades the formation and pushes out other other fluids for example. Um

182:09 then how how the borehole is We talked a little bit about

182:15 It's drilled its case it's cemented. actually worked at a geotechnical company for

182:23 little bit only like four months. we did this big project for like

182:28 pipeline and they sent us like a of casings with like go from Mexico

182:33 and it smelled so bad. I'll forget the smell. It was very

182:39 . But what kind of smell wasn't that it was more like because it

182:44 like a near shore and then we like a far out but the near

182:48 it just smelled like sewage. It like that dirty dirty mud smell.

182:53 just gross. Well it probably was was there probably was a lot of

182:58 in it probably it was probably near and highly organic, shall we

183:04 Yes. There was one where it like over 100% because we had to

183:08 outer burns on it for like liquid and plastic limits and its liquid limit

183:13 like Over 100. I don't remember exact it was like 125% or something

183:21 . Oh good. And then some we talked about the temperature. Do

183:24 remember the temperature gradient? It was you say like one degree over 100

183:30 or? Yeah. Yeah, well one P. S. I.

183:35 , one PS I per foot and something like one degree F per 100

183:41 or three degrees C per 100 m degree per 100 ft. So it's

183:48 . And then we talked about a kinds of well lives for example,

183:57 when we get the cuttings that's going give us a geologic log and I

184:10 kind of laugh at this, this Galveston harbor again with the semi Submersible

184:16 wanted to jack up a couple jack brings and then here's one of the

184:19 leaving. So you make your money this rate and then you spend your

184:27 on this boat. That's exactly the it goes. Okay. Well

184:36 Um That's quite a bit for Um So do you have any questions

184:44 those three topics that we covered Um Not right now. This was

184:54 good to kind of like review from like reservoir pretty much. Just gotta

185:00 it again and make sure. But feel pretty good. Yeah. It's

185:06 after going through the undergrad program here and then kind of, how many

185:11 do you take in your in this masters? Um I think it's 12

185:18 I'm not mistaken. I think I'm 100% on that. I think it's

185:23 though boy. That's a lot. . Next my next session on my

185:32 court. I intertwined with the geology . So I think it's my last

185:39 by myself. Yeah. So all ones so far have been geophysics without

185:45 geology cohort. Yeah. I think what four or five people in the

185:50 group. I think that's what he people to talk to. Well you've

186:02 a you've got a pretty strong background in all the geophysical stuff so that's

186:07 good. Um Great great. There a couple of, there's there's some

186:20 quizzes here so you can do that after tomorrow. Just just for next

186:26 . Okay. Oops and oops, actually put the answers in there

186:39 Uh Why don't you just do do this without looking at the answers

186:45 then you've got the answers right This will just be uh a self

186:59 . So that's good. We'll have have a it doesn't have the answers

187:04 it next time. But but just at the first page and quickly do

187:10 . Then you can check to make that your answers are right afterwards.

187:13 be just for your own for your exercise and interest. I was laughing

187:25 on one of the tests, I prepared the test and I was giving

187:30 in class. And then I also the answers and I had that just

187:38 myself. But then I printed and the answers were just highlighted was

187:44 choice. So the I printed the to give to the students. This

187:50 last semester and I gave it to students. And sure enough, I

187:56 printed out the test that had the slightly and bold. So if you

188:03 at the first page, which was choice, fortunately there were a bunch

188:05 other questions. But if you look the parts that were multiple choice,

188:10 could see in bold. So one the students was kind enough to

188:13 uh does the bold answer? These questions have anything to do with the

188:21 . Oops. Yeah, it sort does move on, move on.

188:28 , Okay, well that's good. , let's meet tomorrow at nine.

188:35 up in the Woodlands, I'm kind , I'm flexible. I live in

188:38 Park, I live near the but uh you we can, if

188:44 want to continue to get healthy, can just do tomorrow online, and

188:49 I'm I'm kind of, I'm flexible way or the other. Okay,

188:52 can do online tomorrow, and if want, we can do in

188:55 Next friday, maybe next friday, do in person, just friday

188:59 do in person, so you can your week a little bit, And

189:03 we can go from there, but let's go online tomorrow at nine,

189:07 . Cause I know like me and Thompson, we have done, we

189:11 one saturday in person and I think were both absolutely miserable. Um so

189:17 cause it was so long and just and m in that classroom for like

189:21 after you getting online after that. , that's that's kind of brutal,

189:31 it's, you know, we can of, I think, I think

189:38 afternoon would be good, but, know, we've already been in classes

189:41 and everything, so it's kind of to get to know each other a

189:44 bit, but we've known each other a few years, so that's not

189:49 as critical. I would, let's go online tomorrow, and,

189:55 then maybe next friday. Just do couple of hours in class.

190:00 Okay. Great Stephanie, enjoy the of the evening and we'll,

190:04 we'll see you

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