A Different Approach to Calculating Saudi Arabia's Oil Reserves

I posted this information to my blog last week, and I was asked if I would post it here as a short essay. While preparing my response to Jeffrey on the exports debate, I read as much as I could on Saudi Arabia, their exports, and their reserves. The entire world is at the mercy of Saudi's reserves, so it is important that we know the size of their reserves. The "official" number (from BP's Statistical Review of World Energy) is 262 billion barrels remaining. If this was in fact true, then Peak Oil is very distant (although Peak Lite would still be a threat). However, many are skeptical of this number. The case for a much lower reserve number was argued by Matthew R. Simmons in Twilight in the Desert: The Coming Saudi Oil Shock and the World Economy. Khebab and Jeffrey have argued that Saudi reserves may be as low as 70 billion barrels. If true, this would be quite alarming and would in fact mean that Peak Oil is on top of us.
In my opinion, the opacity of Saudi's reserves is not something the world can afford to live with. It is not that I don't trust them, nor that I think they are necessarily being deceptive. I just believe we can't afford to risk that they are being deceptive. We need to have a better handle on their reserves.

I decided to try a different approach to see what I came up with, and I came across an interesting statistic regarding U.S. reserves. In 1982, Saudi Arabia stopped allowing their oil and gas data to be scrutinized. Prior to that, outsiders had some access to information on their reserves. When that accessibility was shut down, Saudi proven oil reserves were estimated to be 164.60 billion barrels. I have yet to find a challenge to this number. It seems to be accepted that this number does represent their reserves in 1982. However, in 1990 they mysteriously raised their reserve estimate by 90 billion barrels. Since the data are now hidden from public view, there is obviously a great deal of skepticism regarding this new estimate.

So, I started with the assumption that the 1982 estimate of 164.60 billion barrels was correct, and then I just subtracted Saudi production since then. I calculated their total production since 1982 as 69 billion barrels, leaving 95 billion barrels of reserves. This approach would imply either that their 1982 reserves were overstated, or that the models showing Saudi Arabia at 70 billion barrels remaining are in error. (If anyone can find a challenge to the 1982 number, I would appreciate the reference).

But, we know that reserves sometimes legitimately grow, and new discoveries take place. So, I decided to check this approach against what happened in the U.S. over the same time period. I examined U.S. reserves and production from 1982 to 2006. The following data are all pulled from:

U.S. Crude Oil Proved Reserves, Reserves Changes, and Production

In 1982, U.S. reserves were 27.858 billion barrels. In 2005, U.S. reserves were 21.757 billion barrels. So the U.S. drew down reserves by 6 billion barrels. I then looked at cumulative production over that 24-year time period. What would you guess the cumulative production was, given that reserves were drawn down by 6 billion barrels? It may come as a surprise, but oil production from these reserves since 1982 totals 56.9 billion barrels. Thus, in the past 24 years the U.S. has produced 57 billion barrels of oil and pulled reserves down by only 6 billion barrels. The reason is that there were discoveries that took place over the past 24 years.

The method I tried to apply to Saudi reserves may be conservative, considering what happened with U.S. reserves since 1982. So I still don't have a clue as to how much oil Saudi Arabia actually has. If their reserves followed similar behavior to U.S. reserves, then they could still be sitting on more than 150 billion barrels. But I think it is tough to make a case that their reserves are much lower than 100 billion barrels.

Robert,

I have no intention to be disrespectful, I'm just criticizing your work not you as a person.

I find this post quite naïve, especially coming from someone who posts at and reads TOD regularly. Both the US and Saudi Arabia are well documented cases of ill reporting practices, under-reporting for the first, over-reporting for the former. How can the evolution of declared reserves from these two countries be compared?

If you're not acquitted with this subject please read this post wrote by Chris (and the attached article by Roger Bentley).

Just as an illustration I leave you one of Jean Laherrère's many priceless graphs:


I find this post quite naïve, especially coming from someone who posts at and reads TOD regularly. Both the US and Saudi Arabia are well documented cases of ill reporting practices, under-reporting for the first, over-reporting for the former. How can the evolution of declared reserves from these two countries be compared?

The case with the Saudis, though, stems from them dramatically raising their reserves in 1990. That's why they have a reputation for over-reporting their reserves. The key question is: Were they suspected of doing this in 1982, when their reserves were more transparent? I haven't been able to find any information on this, but if anyone has some I would like the reference. If they had been suspected of over-reporting the 1982 number, then you have a point. Otherwise, 1982 may be the last "good" number we have from them, which is the reason I tried to estimate today's reserves based on just depleting what was there in 1982.

Well, in fact I don't think that Saudi Arabia had the reputation of over-reporting at that time. But, for your argument to stand the same would have to true for the US, which obviously is not the case. As you can see from the graph above the reported Reserves were about half of the technical numbers.

You also have to consider the lag of almost 40 years between the peak of discovery in the US and that of KSA.

Hi Luis,

I am traveling, and only time for a quick reply. Based on your comments here, as well as those I got via e-mail over this article, I think people are misunderstanding my point. You wrote "for your argument to stand.."

I have two conclusions. One, is that if Saudi's reserves were accurately reported in 1982, and all one did was subtract out their production since that time, you get a (modestly) higher number than the HL indicates. That's one, and it's accurate as far as I can see. If I tried to argue for a higher number, then you could say that comparing the U.S. to Saudi may be inaccurate. But I am merely saying that unless we have reasons to suspect their reserves were overestimated in 1982, the remaining reserves should be at a minimum of what I calculated them to be.

However, my other point is that one can't really argue that their reserves are higher than that, because as shown when I applied it to the U.S., it gave me an answer that was grossly in error.

The final item was that it was surprising to me how much oil the U.S. has produced in the past 24 years from their reserves there. No implications toward Saudi there; I just thought the U.S. statistic was interesting.

NOTE: For readers who may wonder why there are comments prior to the publication of this essay, these comments took place while the article was still in the queue.

Robert:

Note the understatement of US reserves versus actual production.

Then consider that using only data from before the US peak that Khebab accurately predicted US production up to the present within 99%.

Who was wrong here? The reports of US reserves were wrong and the HL method predicted more production that we would have expected from the reserve reports. And the HL method was right.

Note again that Russia fits the plot for production early 1980s to present from data that terminates in the early 1980s. Yet that HL prediction is 95% on the mark.

The known HL plots against KSA do not suggest there are 150 billion barrels left. In fact those plots indicate 70 billion barrels. Your 95 billion barrel would be above the HL plot for KSA.

Now, you can try to construct some other view and you are certainly free to do so but you cannot ignore that HL plots of US and Russia were so accurate. You must explain why KSA is an exception to the rule and you haven't done that. Instead you suggest a similarity to the US so therefore we should expect something similar. Yet the HL plots don't suggest that at all. Stuart covered the HL plot for KSA here. This is why we argue there are 70 billion barrels left in KSA. Because the HL plot says so and the HL plot has been correct about US and Russian production post-peak to such an extraordinary degree that it is incumbent on anyone disputing this number to demonstrate why the HL plot is wrong.

"Instead you suggest a similarity to the US so therefore we should expect something similar."

Isn't that EXACTLY what WT has been stating all along?  That KSA will follow the same pattern that Texas, the Lower 48 etc have followed?  If we saw US reserves drop 6 Gb after pumping more then 60 Gb, shouldn't the same trend hold true for KSA?

If it doesn't then, you just debunked WTs own argument for RR.  Congratulations :)

I predict that once again WT will state that he wants to drill the Lower 48 of a QT.  Cuz that's where the oil is.

Surely we all heartily agree with him!

Well actually this post seems almost disinformation,taking a basic practice of the oil industry and acting as if it's shock and surprise.

The real numbers from 1982 to 2005 is that the US was pumping 8.6 million barrels a day in 82 and in 2005 is now pumping 5.1 million, that's a decline of 40%. It doesn't matter how much reserves the Sauds say they have, what matters is production numbers and even those are debatable right now.

So time will tell if they can ramp up, keep up, or start going down. But I think to explain to people how reserves numbers work or don't this post is somewhat irresponsible.

After doing some basic napkin calculations, for the 70 Gb reserves remaining in KSA to be true, they would have to have been in decline from their 9.1 million secondary maximum for at least the last 5-7 years.  Since the data indicates that this is not the case, we must then assume that the URR value must be higher, and the HL model is being skewed by the flat production rate from 1992 to 2002.
My friend, I've never argued here about the date of peak, whether it's today, five years, or 20 years, it doesn't matter. I do know we've already wasted 3 decades since we realized oil was a limited resource and have done nothing except use more of it. Now we're ankle deep in blood in the Middle East and about to be knee deep or deeper because of oil. So take your happy-happy over there and tell them how it's all good.
I never said it's all good.  I want us to move away from oil and reconnect our transportation system with electricity.  Burning oil for transportation is about the most moron thing we could have done.  Thanks to big oil though, it's all we've had for 100 years.
"I want us to move away from oil and reconnect our transportation system with electricity.  Burning oil for transportation is about the most moron thing we could have done."

So the intelligent thing to do is to shift transportation from oil to coal? Cool! Let the mountaintop removals accelerate!

Well actually this post seems almost disinformation,taking a basic practice of the oil industry and acting as if it's shock and surprise.

No, not the practice. The amount. That was the surprise.

What some of you are forgetting is that during my career I have been a Downstream guy and an R&D guy. I am learning some new things just like some of the people who e-mailed and told me that this was news to them. I am not an expert on Upstream operations, but this is the area I will be in when I go to Scotland. So, that is part of my motivation for getting involved in these upstream discussions. But don't expect me to be an expert in upstream. Others on this board know far more about upstream than I do. For now. :-)

Well don't play an "expert" when you're not and act as if you're discovering surprising new information, when its standard bs about reserves. Putting your discovery about how reserves work using the US against the Saud's numbers is to say the least garbage, I'm surprised the editors allow this.
Well don't play an "expert" when you're not and act as if you're discovering surprising new information, when its standard bs about reserves.

I continue to be baffled by responses like this. First, I never "played" an expert. I am trying to learn about Saudi reserves, and tried to do a different calculation to verify the HL. It didn't work, but I found out the surprising information about U.S. production and reserves. Again, the "discovery" was not about how reserves work. It was that we had produced 10 times what we have drawn down over 24 years. That may not be news to you, but it was news to a lot of people, including me.

As far as the editors "allowing" this, one of the site owners specifically asked me to post this information here. Take into consideration that others may value the information more than you do, and your opinion is not particularly relevant to me when others got something from the information.

I never "played" an expert.

please

one of the site owners specifically asked me to post this information here

I am truly baffled.

please

Please indeed. Instead of the over the top personal attacks, why don't you build your case that I have presented myself as an upstream expert? Downstream? Sure, I know my stuff quite well there. I don't know everything, but I am quite knowledgeable. Ditto biofuels.

I am truly baffled.

Consider the fact that your opinion may simply be in error. It is not my intention, nor is it possible to please everyone all the time. In fact, the very fact that I work for an oil company means that it is impossible to ever please some people. Based on some of your historical comments and hostility toward me, I tend to think you belong in that latter category.

Relax Robert, I don't know you, I only argue your comments and you present yourself as an oil industry expert. I agreed with your numbers on ethanol and took, and still do vehement exception to how you say oil "markets," which you continually argued not with public facts, but saying you had inside information -- as our great president says "this ain't my first rodeo."

Now, you put up on a post information that anyone who has looked into a limited about how reserve numbers are kept knows it not to be any surprise at all. So why don't you try fessing up instead of people saying they're attacking you personally.

I've learned a lot of things on this site and its a very important issue, people deserve to be able get the best information possible and not "listen to me I'm oil company employee," and you do that all the time.

Relax Robert, I don't know you, I only argue your comments and you present yourself as an oil industry expert.

The oil industry has a lot of different areas. Most Upstream types won't know too much about refining, and vice-versa. I am a refining guy about to transition into an upstream job. So, part of what I am doing right now is trying to learn as much as I can about Upstream operations. The way I view this site, and the reason I started posting here in the first place, is that it is a place to share knowledge and to learn. However, you took the opportunity not to say "I disagree", but instead to belittle me personally. Why you felt the need to do that from your anonymous perch is something I simply can't know.

I agreed with your numbers on ethanol and took, and still do vehement exception to how you say oil "markets," which you continually argued not with public facts, but saying you had inside information

What I was doing was a favor to you. You would probably acknowledge that I do know some things that a layman would not know about the oil industry. Yet when I tried to help you answer a question - and I did have first hand information on some of this - you simply chose to disregard it and blow me off. That's your problem, but I won't ever try to answer another of your inquiries.

Now, you put up on a post information that anyone who has looked into a limited about how reserve numbers are kept knows it not to be any surprise at all. So why don't you try fessing up instead of people saying they're attacking you personally.

Why then, do you think some people even in this thread are saying "Those numbers can't be right." For me, the numbers were surprising. Just like an upstream guy might be surprised at how much energy it takes to refine a barrel of oil. However, if he did express surprise, I certainly would not feel the need to belittle him or suggest that this is common knowledge. The fact is, those numbers surprised quite a few people. You can see that someone expressed surprise in my blog. You can see surprise expressed in this thread. Surprise has been expressed in e-mails. So, your comments about this being pretty common knowledge ring pretty hollow with me. The thread has also generated a pretty good discussion, which sad to say you have not contributed substantively to.

I've learned a lot of things on this site and its a very important issue, people deserve to be able get the best information possible and not "listen to me I'm oil company employee," and you do that all the time.

I am starting to think you don't have an honest bone in your body. Show me a single example of where I have done that. Please link to the discussion, or admit that you are being dishonest. I went out of my way once to try to find out some information for you, and this is the thanks I get. But just know that you will never get even the most basic information from me ever again.

Robert,
Since I believe you understand math pretty well, let me present a thought experiment based on a fairly simple premise.

The premise is that, say starting from right now, i.e. Time=0, we will find a growth in reserves that goes like 1/(Time+k), where "k" is some small number to keep the starting number finite. Let's say that this reserve growth falls in the provable category to indicate that we can extract it.

Three interesting results spring from this premise.

  1. The amount of reserve left from now until eternity is infinite. This is a property of integrating a hyperbola (1/Time) over all time. Essentially we get a URR of infinity.

  2. If production is rate proportional to the current reserves (the classic "greed is good" assumption which explains man's and the free market's capitalistic instincts), the position of peak won't change too much. This has everything to do with rate considerations. The rate of reserve growth cannot match consumption rates, and new discoveries are clearly dwindling.

And most importantly, the one thing that explains your puzzlement.

3. The draw-down from reserves can become vanishingly small in this scenario.  Taking finite production from an infinite pool leads to the conundrum that we are extracting an infinitesimal fraction of that eventually available.

This argument is subtle, but if interpreted incorrectly, it gives ammunition to the cornucopians, who can assert that huge reserves lay in wait.  However, in reality, since rate extraction is proportional to current reserves, all we see is the classic effect of "diminishing returns".   Of course this has real ramifications for a continuously growing energy-based global GDP economy, but the cornucupians will not spin it that way.  They instead point to a continuously finite reserve that doesn't get drawn down by as much as one's expectations can intuit.

Having to face and account for this argument, a cornucopian would have to propose a reserve growth rate that will keep pushing the peak into the future. Unfortunately, this would have to be a growth even more aggresive that the 1/Time variant, which already has an infinite URR !  Fortunately, anyone actually proposing such a growth rate puts themselves in a situation that they can be endlessly mocked.

We have to continue to do question the numbers because otherwise we fall into the logical conundrum B.S. traps that politicians and corporations and scam artists have historically used to try to separate us from our money.  Simple thought experiments like I have shown here remain one of the few options that we have to eliminate the rhetorical arguments from the public discourse.

As a recent and complementary example of where people have gotten hoodwinked in this fashion, google the "infinite horizon" argument to escalating Social Security costs.  Bush's people have actually suggested huge future costs of S.S. based solely on a hidden assumption of an "infinite horizon". It takes time for the economists to dig this stuff out of the rhetorical arguments, but by that time the damage is done and people get a completely misleading impression.   I remember hearing Al Franken debunk this argument quite effectively by saying that, "yes we may have a huge SS deficit, but will have infinite time to pay it off, so it looks like our current funding is no problem".  Touche.  

WebHubbleTelescope,

This was a first rate response, encompassing much of the peak oil debate.  It also neatly points a spotlight on the Global warming and finite resources debates intertwinned with Peak oil.

If you don't mind I think I will "borrow" this example the next time I have a discussion with people who are overly optomistic about resource availability.

I have the feeling of beeing the spectator of an absurd theater play. Hogwash will find something to attack Westexas with, people will come to Westexas defence, Hogwash will attack again then move on to the next tread. Rinse and repeat ad infinitum.

But lets get it on.

Isn't that EXACTLY what WT has been stating all along?  That KSA will follow the same pattern that Texas, the Lower 48 etc have followed?  If we saw US reserves drop 6 Gb after pumping more then 60 Gb, shouldn't the same trend hold true for KSA?

Westexas has been saying that based on the HL method the KSA should peak at the same point as the lower 48. In the lower 48 you had the Texas Railroad commission, in KSA you have OPEC.

The argument being debated here is that Rapier says that the reserve growth in the US might be mirrored in the KSA. Other counter the argument by saying that in the US reserves were intentionally underestimated, but that the opposite holds true for OPEC.

The argument being debated here is that Rapier says that the reserve growth in the US might be mirrored in the KSA.

That misunderstanding has led to a lot of the comments in this thread. That was not my argument. I just checked US reserves growth to see how applicable such a method might be. As I said, it wasn't very accurate. However, it is possible that Saudi has had some reserves growth. We just can't know, and as I said we can't afford to risk that.

And current reserve estimates for KSA are based on the assumption that there has been zero reserve growth in the KSA, AND they have had no new discoveries since 1982.  Two ridiculous assumptions at best.

Why not ?

The region is well explored they have large reserves no real reason to assume any reserve growth came from fresh discoveries instead of better estimates for current fields.
Or probably more realistic different estimates of URR for current fields.

KSA has not announced large new discoveries.

And URR growth in existing developed fields has to my knowledge never lead to increased production rates ever.

The US, even in 1982 was perhaps the best explored region on the planet, yet we experienced the reserve growth' phenomenon and continued to discover new fields.

Your argument holds no water, and WTs own arguments are undermining your position.

Westexas is making the argument from the HL perspective not from RR's surprised perspective!!! Have you failed to read WT's argument at all in all these months????

His argument is not RR's argument at all. WT's argument is that because KSA resembles the lower 48 IN THE HL PLOT that KSA is now set for irreversible declines.

Your ignorance is either astounding or deliberate. Which is it, Hothgor? Are you ignorant beyond belief or a deliberate troll? No other option fits after all these months of telling you the same thing over and over and over again.

One more time, Hothgor...

  1. The HL method correctly predicted US production from 1970 to 2006 using only data up to 1970!!!!

  2. Applying the same HL method to KSA says they are on the verge of irreversible declines.

Do you understand this yet? This is the heart of WT's argument. This is what I just explained to RR.
Well, the decline has allready set in in the KSA, with drilling ramped up to historical high levels, while keeping production voluntary flat:

http://www.econbrowser.com/archives/2006/07/saudi_prod_rigs.jpg

Unfortunatly, production in KSA now starts to decline, alltough being presented as production cuts, cause "the market is over-supplied"

Right.., hense the low prices these days.

Relax.
Red Ferret says we have 29 years:
Personaly, I think that blackleatherhosed cats land their UFO's every night and then start to refill our oil fields..
So nothing to worry about!  </sarcasm off>
Hello Luis,

Is there any similar KSA chart like the US chart posted above?

Bob Shaw in Phx,Az  Are Humans Smarter than Yeast?


No one has debated the 1982 number of KSA reserves. Mainly because of the almost obvious political boost later.

But how good is the 1982 number ?I know that in the recent past major oil companies have had to do major write downs of their reserves.

Can we really trust this number ?

I don't know either way but as far as I know its never been discussed either way.

I think its worth looking into.

  I grant you that Hothgar has been abusive in the past. But lately he has been much more restrained in his comments and shown a lot of personal growth. Because of this attempt to be more civil, I think we need to respond to his comments purely on the content of the comment. In other words, give the kid a break.
   I'm sure glad I'm not being held to account for my comments when I was in my 20's! The I Ching, my favorite spiritual book says that prisons are meant to be temporary dwelling places only. Let's put him on parole!
This TOD community is really quite phenomenal!!  What a diversity of folks we have here, we get pi$$ed off at each other, we calm down, we set boundaries we can all live with, we progress (albeit sometimes slowly), we usually go to bed feeling like we've participated in something greater than ourselves...

THIS is what I envision/wish/pray for in whatever community/local governemnt evolves around me as time goes by.

If you step back and look at it all (TOD), it's pretty amazing.  Sorry for getting gushy...perhaps it's the holidays.  Anyways, oilmanbob's comments got me thinking about it all.

Only I am allowed to "step back".
I have trademark, copyright and trade secret rights in the concept. </fooling around>

That said, I have a question for the Grapholigists here at TOD (i.e. Kehab, westexas, RR, etc.) I posted the question in a nearby thread. Here is the link to my whole post.

Here is the question alone:

Question to Kehab, Westexas or other grapholigst: At time point 0+35:33 the Professor puts up a slide showing continuous increase in production through 2005. Very different from the plateuing we see here on TOD. Is he lying or are both graphs true, and if so, how can that be?

11/2005 Professor Hamilton on Peak Oil video here

The us sec has always required very conservative reserve estimates, meanng that it is normal for a field's reserves to climb over time, and therefore even as production continues the recoverable oil 'grows'.  Actually, of course, it doesn't grow at all but was underreported to begin with.
For sa, there has been no sec to worry about since sa bought out the wstern companies.  The reserves they reported prior to that time might have been conservative, but there is no reason to think that any reserve number put out by sa since then means anything.
I really hope we'd all subscribe to the same basic principles of argumentation:

0. Falsifiability (can your argument be falsified in theory? If not, revise until it can)
1. Arguments in standard argument format:

- Since premise (1)
.
.
.
- since premise (n)
- and rebuttal premise,
- Therefor, conclusion

This makes it so much easier to understand what the person is REALLY trying to argument.

2. Fallibility (we may ALL be wrong on a particular argument)
3. Truth (search for the truth, not evidence to your position)
4. Clarity (use simple, plain language, preferably in standard argumentation form as in 1.)
5. Proof (if you state a claim, back it up with proof)
6. Charity (try to argument against the strongest version of somebody else's argument, not against a straw man or against a single typo or other mistake. If you don't understand the argument, ask for clarification)
7. Relevancy (let's stick to the arguments, NO ad hominems)
8. Acceptable (use acceptable logic shared by all)
9. Rebuttal (try to rebut your own premises)
10. Resolution (if one position is defended with accepted premises/logic, that is then accepted, otherwise judgement is suspended, until new data/reasoning is found. No need to rehash same old stuff over and over again. No need to name call, just because we disagree on an argument)

I think it would make our shared understanding here develop MUCH faster and hopefully lead to less misunderstanding and useless flamefests :)

 

I find this post quite naïve


Naive? Come on. There have been only 18 posts so far, but no one has questioned his accuracy that US reserves have been reduced by 6 Billion barrels since 1982, yet production was 57 billion barrels.


That is a huge contribution, and in no way should be ridiculed. I for one am a daily reader, but infrequent poster. I don't post because there are more knowledgeable contributors, such as RR and West Texas.


I for one agree with RR that KSA reserves are the key to when we reach peak oil. In fact, I think it is the most important piece of information in the puzzle of peak oil. It's apparent to me that KSA production is going to determine when our collective lives begin to change. Once we have this number, we can correctly report to the world a timeline for peak oil.


I think the reason people are attacking RR is because they don't believe that KSA reserves can grow the way US reserves have grown. Personally, I don't think KSA reserves have grown, but this correlation should give us pause. If they've had any growth at all in reserves, then they could have one last gasp, and increase production as they have promised.


Is West Texas right about KSA already at Peak? My gut says that he is right. I don't think KSA reserves have grown, and are somewhere around 100 Billion. But, like the rest of you, it is only a hunch.


Thanks RR.

   

I think they mean "naive" in that such reserve growth is well-known.  Deffeyes talks about it at length (in his first book, I think).  He says U.S. oil companies low-ball reserve estimates for tax purposes.  Then they gradually add them to the books over several years.  That's why reserves always grow, even with no new discoveries are made.  

Expecting it to play out the same way for Saudi Arabia is probably not realistic.  They aren't subject to U.S. taxes, and they have other reasons to inflate their reported reserves (the OPEC quota).

I'm also surprised Rapier didn't know this. That book was the first one I read on the topic.

Another thing Deffeyes wrote (I don't have the book at hand so this is from memory), was that Hubbert noticed that oil companies, for tax reasons, would claim discoveries made in the US in the thirties, when the oil wasn't needed, as new discoveries some twenty years later. And this was giving people the false impression that new oil was being found all the time.

And this was giving people the false impression that new oil was being found all the time.

False?
What do you mean false?

Of course new oil is being created all the time. I have it from a solid authoratative source that this whole Peak Oil thing is a scam, a hustle.

Oh ... <sarcasm off>

  Explain how tax policy led to US companies undercalculating reserves. My understanding of US tax policy is that companies pay taxes on income, less percentage depletion.Some states have a severance tax, which is an income tax that is industry specific. In Texas it is 4.5% for oil, and does not apply to stripper wells. Various local entities use ad valorem taxes-Cities, Counties, Schools, Hospital Districts and these are calculated on a county-by-county basis by the Appraisal districts in Texas, but I don't own any production in other states. The appraisal districts hire a valuation company, but the valuations are based on production rates and sales price on January 1 of every year. So, in essence all taxes here are income taxes, based on cash flow.
   I believe the estimates were off so far because of 1.advances in recovery technology and 2. higher prices extending the productive life of fields3. advances in the science of engineering reserves and 4. human error.
  I can't see that erroneous calculations in the past mean we now have erroneous calculations. Just because Deffyes was right about the result-a lot more oil was produced than was shown in the reserves-doesn't mean he was right with his ex post facto reasoning. I have great respect for him and believe he is generally correct. But he blew it on the taxes reason.
I'm also surprised Rapier didn't know this. That book was the first one I read on the topic.

Again, it was not the growth that was a surprise. If we had produced 10 billion barrels and pulled our reserves down by 6 billion barrels, I would not have been surprised. It was the amount that was the surprise.

And, as I said above, I have been a Downstream and R&D guy during my career. Just because I am in the oil business, you should not expect me to be an expert on Upstream operations. I have to become one, because my new position in Scotland will demand it. But I am just beginning. Discussions like this help me to learn, but at the same time I have to put up with many gratuitous insults during the process.

KSA is not subject to US taxes, but many of the private companies that were responsible for the original URR estimates were.

Has this been taken into account in the 1982 estimate?

Cheers,

   Davidyson

Deffeyes discussed that some, but I can't remember what he said about it.  I'll have to look it up.
"US reserves have been reduced by 6 Billion barrels since 1982, yet production was 57 billion barrels."

Doesn't anyone else see a huge red flag here...

6 billion = 57 billion

Come on, that is a factor of almost 10 x.  Some thing is very, very wrong with these numbers.

My guess is that it still doesn't matter.  We have increased our imports and are still in domestic decline.

Come on, that is a factor of almost 10 x.  Some thing is very, very wrong with these numbers.

Now you are talking. You are displaying the exact same kind of surprise that I displayed when I saw the numbers. That's why I shared them. It didn't seem that they could possibly be correct, but they apparently are.

OK if they are correct then the next question is why are the so far off?

I guess that I wonder if the debate is worth the effort.  More extraction for the US hasn't helped. We import what @60% of our oil vrs @30% with the first oil crisis of the 70's. We are still in decline.  If HL fits and was predictive then perhaps it is the best tool available to estimate future oil production.

From what I have read nat. gas shortages may screw us first.

I wish CERA was correct, or any of these other overly optimistic forcasts.

 

OK if they are correct then the next question is why are the so far off?



I just found this small pool of oil. Since my company is publicly traded I am subject to SEC regulation. If my mule dies before I can pull all the OIIP out of the ground then I can go to my investors and explain that I bought a dud mule. They will be understanding and I am in the clear with the SEC.


On the other hand, if I pull in investors on the basis of 500 million bbls and for some wacky geologic reason, I only pull 5 million out of the ground, then I can expect my investors to be all over me and the SEC to be investigating me for securities fraud (why should my investors pay huge legal fees when they can file an SEC complaint and get the state to investigate on their behalf?). No oil, big lawsuits, a criminal investigation, and one dead mule. What's a poor wildcatter gonna do?


First smart thing is to underplay my hand a bit. What I think I got, and what I tell my investors, are two different things. If I over estimate and over promise, I can be in a world of hurt. If I under estimate and under promise, then nothing bad happens.


This approach has an added advantage. My investors want to see that I know my stuff and see my company constantly growing its reserves, its production, and its income. People pay good money for a positive earnings trendline so that is what I aim to deliver. Every year I can add a bit more OIIP onto the balance sheet. Every year I book more OIIP as proven reserves. Every year production goes up. Remember that this is taking place 40 or 50 years ago when the notion of frontloading the production profile to maximize the IRR (not the URR the IRR) was not a common technique. Financial wizardry had not yet hit the patch.


There is another advantage to this approach. If I tell you folks where my little 500 million bbl pool is situated then under the laws of capture there is nothing to stop oilmanbob from coming along with his rickety rig and his sick mule and bidding up the lease rights. Nothing stops him from trying to drill into my little pool. So shucks, maybe I got some oil then again maybe I got nothing but a lot of expensive dusters and one dead mule. Move along, nothing to see here.


It is hard to prove it with graphs but I think you can sense the existence of a series of systemic biases which promote conservative estimates and under reporting. Note that these systemic biases would be specific to a certain time frame and certain jurisdiction; they would not have application to a foreign jurisdiction such as KSA. However, the OPEC nations may have their own form of systemic bias in that the greater the claimed reserve figure, the higher the production quota they would be assigned.

It may also be useful to note that a proven reserve may be securitized and used as the basis for loans to the state. It would not be surprising if the OPEC nation reserve increases were immediately followed by a significant increase in foreign debt.


Looking at the present situation in KSA it is interesting that a graph presented recently on TOD showed they had paid off foreign debt and were now in surplus. Bankers are not all that dumb and they can read Simmons too.

Good point, closeology beats geology anytime. The best place to drill a well is in between two good producers,  you bet I'll buy a lease with that kind of location and try to slip my straw into the sodawater too.
  The other main reason for reserve growth is that Geologists and Petroleum Engineers are very conservative personality types and don't make unsupported assertions very often. I'm not talking about politics, but rather that they are old fashioned conservatives and a great balance to overenthusiastic landmen and speculators. Therefore, they tend to err on the side of conservatism about reserves  
Let me ask a couple of questions:

In 1971 what did HL say the US reserves were?  What geographic region did that encompass?  Did it include offshore?  Were we pumping oil from the gulf at that point?

HL is a great tool for predicting eventual reserves in a given geographical area.

If we started pumping like crazy just offshore of the West Coast of Florida, the URR for the US would change, right?  (I realize not by that much, but it would change the slope of the tail slightly, right?

HOw does the HL look for Saudi Arabia if you calculate only with numbers up to 1982?

And lastly, what is the effect on HL of "throttled back" production?

Garth

You are ignoring the fact that the HL method predicted those 50+ billion barrels of production even when reserves said otherwise. And you are ignoring the fact that the HL method says KSA has 70 billion barrels left.

Try reading the prior work done by Khebab and Westexas that compares HL predicted oil output versus actual using only data up to the US peak (1970). When a model gives a 99% fit against the US and a 95% fit against Russia, then the model has to be taken seriously.

You are ignoring the fact that the HL method predicted those 50+ billion barrels of production even when reserves said otherwise. And you are ignoring the fact that the HL method says KSA has 70 billion barrels left.

Is that true? Would an HL through 1982 have predicted those reserves? I don't know. It would be interesting to see. I will look into this when I get back to civilization.


Robert consider this scenario. The 1982 estimates were inflated. And the KSA did experience some reserve growth but again provided inflated numbers. So at no point in time where reasonable realistic reserve estimates available from KSA.

This leaves HL as the best estimate we have of actual reserves. The fact that Kuwait has gone very quite on their real reserve speak I think for itself.

The safest assumption you can make for the ME is to ignore reserve estimate and trust HL.

At best the 1975 estimates which are quite out of date are about the only number we have that might be trustworthy.

http://www.peakoil.ie/newsletters/448

As far at the HL method itself goes. Most of KSA fields have been in production for a long time so we have a good production history. HL is very dependent on production history. What one would do to provide that the HL model is converging would be to take hl plots year by year and show that HL is both converging and its error term is decreasing.

So if your concerned about the stability of the HL analysis this sort of forward propagation would be really useful.

The median if this analysis would then be consider the estimate.

But the important point is production levels.  Regardless of how much the U.S. has produced since '82 (even though actual production has exceeded the then estimate of reserves), the U.S. has never again achieved production levels of '70.  Once KSA starts into decline, the world's economy is in for a rough ride.  So to the extent that Robert's article implies that decline rates won't kick in for a long time, the article is problematic (or simply the natural inference from the article).  Opacity is a problem, but the amount of reserves is less relevant than determining what the Saudis are really capable of producitn and the true reasons they have been unable (or unwilling) to increase production over the last two years.
yes indeed KSA is critical.  Looking at the increase in drilling makes you wonder.  Rice's visit about thier nuke power makes me wonder if the US gov. is wondering as well.  
US production rates have plummeted which means a lot of this remaining reserve oil will be withdrawn at much lower rates then even today. So to look deeper into the US and reserve numbers regardless of rather the KSA is over reporting. We would expect a significant drop off in production rates even though remaining reserver number are high.

I'm far more troubled by the fact that in the US we continue to report high reserve numbers even as production rate falls.

I mean if the remaining reserves will take 100 years to produce with stripper wells its not all that useful.

agreed, not to you, but actually, it might be critically useful to your grandchildren.  arguments for drillingin ahwar are pretty much the same - the only consideration is ourselves, no thought for anybody that come later.
Robert,
I'm puzzled by two things:
First, the tendency to treat reserves as some measure in the sense of a large quantity of oil from which the owner of said reserves can simply pump oil at will. Given the propensity to treat dubious resources such as so-called 'oil-shale' and various forms of bitumen as crude reserves, I would tend to treat any statement of reserves as interesting, but not necessarily indicative of what said country might produce or how fast they might produce it. Hence, I can plainly see the value of the HL method because it totally ignores the confusing quagmire that is reserve reporting.
Secondly: "But we simply can't take that risk."
Well... I have to agree with Louis here, you seem mightily naive. What the hell else are we supposed to do? Take over SA (before or after we do Iran?)?? Once more, this seems amazingly naive.

I have tremendous respect for your knowledge, and the information you have shared has been very instructive to me, so please don't take this criticism as a put-down.

Apologies to Luis de Sousa for the name misspelling.
Well... I have to agree with Louis here, you seem mightily naive. What the hell else are we supposed to do? Take over SA (before or after we do Iran?)?? Once more, this seems amazingly naive.

What are we supposed to do? Stop assuming that Saudi oil will be available for the next 10 years. That's what I mean by "we can't take the risk." We have to presume that Saudi won't be able to supply us with the oil we want, and we need to prepare ourselves for that. I see nothing naive about that.

Seems that this is the very thing that many on TOD have been hollering about, and wondering why you keep holding to this 'greater level of proof' position. Are you having a Matthew Simmons type Epiphany here?
Seems that this is the very thing that many on TOD have been hollering about, and wondering why you keep holding to this 'greater level of proof' position. Are you having a Matthew Simmons type Epiphany here?

No, you are seriously confusing my position. On the one hand, we have to be careful yelling "Saudi has peaked", because if they haven't and start producing more oil in the future, we will have a serious loss of credibility.

HOWEVER, I have never disputed that we can't afford to take the chance that Saudi is telling the truth. This is more than even a national security issue. So, on the one hand I can easily argue that we don't know if Saudi has peaked, and on the other argue that whether they have peaked is irrelevant because we can't afford to trust them. This argument is aimed at those (like Lynch) who would argue that there is plenty of oil left in Saudi. OK, but what if you are wrong? What are the consequences?

SO, then you argue, as do many, that we might as well assume that sa has peaked, and act accordingly.  BUt, meanwhile since we don't have proof, we shouldn't say to anybody else that sa has peaked, because we might be wrong, and laughed at or whatever.  So, the very small number at tod can't take the risk, but everybody else will just have to because the small number at tod represents most of those who appreciate po and meanwhile are not working for or otherwise in the pay of oil companies/countries.
Seems that this is the very thing that many on TOD have been hollering about, and wondering why you keep holding to this 'greater level of proof' position. Are you having a Matthew Simmons type Epiphany here?

No, you are seriously confusing my position. On the one hand, we have to be careful yelling "Saudi has peaked", because if they haven't and start producing more oil in the future, we will have a serious loss of credibility.

HOWEVER, I have never disputed that we can't afford to take the chance that Saudi is telling the truth. This is more than even a national security issue. So, on the one hand I can easily argue that we don't know if Saudi has peaked, and on the other argue that whether they have peaked is irrelevant because we can't afford to trust them. This argument is aimed at those (like Lynch) who would argue that there is plenty of oil left in Saudi. OK, but what if you are wrong? What are the consequences?

RR: It seems to me that the example of US production and reserves upgrading shows that even dramatic subsequent discoveries of oil will only flatten out the downslope once a region peaks. In the US, according to your data an increase of oil reserves in excess of 80% was not enough to increase production.  
Indeed.

The quibbling about angels on pinheads is oh so fascinating, but in truth, the fact of peak is indisputable. The only real question is do we act now while there is x amount of cheap energy available, or do we act later when there is x-y?

You people are being too hard on each other. Just agree that the stuff is about to hit the fan. I am curious about the purpose of pinning down the "actual" peak date - future or rear view mirror. What will be your recommendation? If it is out in the future, will you recommend business as usual? I would be surprised if not disappointed. If it is in the past, then what?

In other words, the answer is always the same. We need to act now with all due haste.

  1. We need to lower the population. That means more funding for population control, condoms, information, media instruction to shape public opinion, creation of international treaties. I would also suggest that this means socialized medicine. Countries with socialized health care have lower birth rates.

  2. We need to develop non-growth based economies. You can find many great suggestions for this style of economy:

http://mondediplo.com/2004/11/14latouche
http://dieoff.org/page88.htm
http://www.eartheconomics.org/ussee2005/documents/workshops/USSEE2005_Scale_Workshop.pdf

  1. We need to restructure the tax system in order to reward steady-state economics and penalize growth economics.

  2. Zoning laws must be nationalized. We cannot let sprawl continue.

  3. The entire United States's land and water resources must be examined for its feasibility for localized gardening. NOT INDUSTRIAL FARMING.

  4. The public school system must include permaculture, sustainable ecology, practical non-petroleum based, localized manufacture, and any other skills that will be needed either in the transition from the current system or in the post-oil era.

  5. We need to redevelop a decent rail system.

  6. The first world must share its resources with other countries. In our case, we must work with Mexico and the Caribbean to bring a non-authoritarian locally oriented government much like the government we will have instituted in our own country. In other words, local people need local control that does not hurt other locally controlled areas. The national government will serve as a facilitator, coordinator, and resource, not a crypto-fascist monster serving the rich.

  7. We must consider how to deal with huge refugee populations streaming out of the Southwest. Where will we put these people?

  8. We need to know how we will be able to feed the coasts which must import their daily bread.

  9. We need to rebuild our manufacturing base. We are truly the luckiest industrialized country in the world. We will not have to tear out our disfunctional, poisonous industries. We did that with globalization. Let the Chinese drown in the poison. We can build local industries built on economies not of scale but of need. By using the techniques found in the book, "Cradle to Cradle: Remaking the Way We Make Things," By William McDonough & Michael Braungart, we can create truly non-poisonous industries.

  10. To facilitate the adoption of these techniques, we need to use our currently unassailable standing as the most ridiculously consumerist nation on the planet and demand that those who do not also adopt these techniques can no longer participate in our economy. (I know, I know. All hell will break loose. You can't do that cause they won't go for it, blah blah blah. Well, just let the world keep going with business as usual and see how that goes.)

  11. Repatriate corporations. In order for any corporation to do business in the United States, it must pay full on corporate taxes. No more off-shoring of profits.

  12. Base corporate compensation on indices other than profits. No one should be paid more than 15 times the lowest paid worker's salary. Stocks must be held for ten years (this will play well with the idea of long-term steady-state economics.)

  13. Bring other suggestions to the table no matter how small. To learn from others will be the future. Demanding a consumerist utopia is the past.

After everyone stops laughing or spewing coffee through their nostrils, because we all know that a rational approach will never happen, let's begin the resources wars, start the balkanization of the US along religious, racial, economic, and familial lines, start the starvation, let's fire up the riots, just accept the facism, lay back and take it like a good peon, open the camps, gear up the riot police, tap the telephones, and issue our travel papers.

Just thought I'd throw out this little bon mot of holiday entertainment for the hardest working nitpickers in the business, my good friends at TOD.

Namaste!!!


Sometimes you have to go with your gut feeling.

Mine is that we have so many potential problems coming our way economic resource population global warming etc etc. The chances one cripples our society is approaching 99% we can argue till its too late which one is the killer but the answer is the same we need to move to a renewable sustainable way of life.

Waiting won't change the answer at best it will change the cause of our demise.

Mike,
I couldn't agree more and have posted similar things to the point I've just about ceased doing it both here, on another forum and personally talking to people.  As I posted the other day, the information is all there for anyone who is interested.  Hell, it's gone beyond the handwriting on the wall to giant billboards besides the road.  

Whether it's in the genes or a societal meme is unimportant in the long run.  Bad things are coming.  And, further, it is, IMO, naive to believe that TPTB are going to come forward, tell the truth and lead the way as many people appear to belive.  The reality is that the consumer-capitalist society is unsustainable and people need to get that through their heads and take personal responsibility for thier future.

Todd


Imagine my shock to discover our production over that time period. What would you guess? Six billion barrels? Ten? In fact, oil production from these reserves since 1982 totals 56.9 billion barrels! Amazingly, in the past 24 years we have produced 57 billion barrels of oil and pulled our reserves down by only 6 billion barrels. That seems incredible, but it appears that this is what has happened.

Shock?  Incredulity?  

It appears that only very recently has Robert Rapier spent some time getting to know the data for US oil production and reserves.

It's these kinds of articles that seriously undermine the credibility of some of the people writing for TOD.

Why are we stuck with amateurs like this?  (Stuart and some others excepted, of course).

We need commentators/analysts that fucking know their stuff.   Not a bunch of know-it-all greenhorns and used-up geezers that don't have a clue about what it means to get to know data intimately.

I have to say, I've learned a few things from people like RR and Jeffrey Brown and Dave Cohen.  But I've also concluded that they are simply out of their depths as serious analysts.  They really need to go to school.  

We need professional analysis.  (And we do get a taste now and then).  But this whole peak oil issue is attracting nothing like the high end talent you find dealing with climate change for instance.  And it shows.

--- A Cranky TOD fan

Not doomerish enough for you, eh troll?
Not professional enough.  Not competent enough.  

My views are close to Staniford's.  Far from doomerish.

I am on a spotty wireless connection in the mountains right now, and won't be responding much to this thread. Hopefully I will get this response out before I lose my connection.

First of all, note that this was merely a short essay. It was in no way intended to be a full-blown analysis. It was an attempt to calculate Saudi reserves based on a different method than the HL. What I was trying to do was actually to corroborate the HL calculation. I did this calculation as just a back of the envelope on my blog, and I was asked to post it here. (Incidentally, I note that you had no actual substantive comments on the essay).

Second, I was aware of current U.S. reserves and current U.S. production. That we had drawn our reserves down by only 6 billion barrels while producing 59 billion was certainly news to me (and probably to you as well). In fact, when I posted this to my blog, I got several e-mails expressing surprise at this number. So, whether you appreciated it is really of no concern to me when others did. It was worth sharing. The purpose of TOD is to learn a little, teach a little, and foster discussion. I have learned a lot here, and even if I have to put up with the occasional irrational attack, I am still going to keep writing and keep posting.

Finally, you managed to insult Jeffrey, Dave, and me all in one swoop above. We have all spent many, many hours writing about and debating these issues. What is your contribution, Mr. Armchair Critic? Others recognize that we do know our stuff. We may sometimes be wrong. We may sometimes make mistakes. But to suggest that we are a bunch of amateurs who don't know our stuff is really an indication that you don't know what "stuff" actually is.

What I would really like to see is a substantive challenge to Saudi's 1982 reserves claim. If I see one, I can conclude that that HL might still be correct. And that's what I was after. So instead of personal attacks, how about giving us something worth discussing?

I know my opinion is of little matter here but...

I thought it was a good contribution.

Thanks


That we had drawn our reserves down by only 6 billion barrels while producing 59 billion was certainly news to me (and probably to you as well).

By no means.  My understanding was that this phenomenon had been observed elsewhere in the world.  And that it actually was the reason for some people's optimism.  I'm just an amateur shocked that the experts are shocked.

But, more generally, there is a basic distinction between analysis and advocacy.  And you, sir, are an advocate.

Which is great.  Advocates and educators are sorely needed. And you guys do a pretty good job at it.

But when it comes to serious research and analysis..... it's very uneven.  Probably from a lack of peer review and basic research standards.  

However, there are signs, in your work too, that things will get better.

Apologies for losing my cool.
 

Jeffrey's opinions, and Robert's, are their own. I do my own work, also. Please don't lump us altogether. Understanding the oil & gas business is not easy and analyzing peak oil is harder still, especially in the face of now almost constant criticism from ExxonMobil, CERA, et. al.

Why did you drag me into this? What part of my work does not represent "serious research and analysis"? I hear from people who do "serious" research all the time telling me they appreciate my analyses. Others are critical and I appreciate their thoughtful critiques of my work. Invariably, I learn from those.

What gives you the right to take an unsubstantiated swipe at my work on this website? If you think something I did was in error or amateurish, you may comment to that effect or write me an e-mail. It is easy to get in touch with me. As I said, some of my best information has come from such exchanges.

Robert,

I find your views very worthwhile and appreciate them greatly.
I think you are extremely professional and a very good communicator as well as a very good debater.

Stay with it. Stay the course. Stick to your findings and support them until others convince you otherwise. This is what we should be doing and I appreciate all the contributors and editors at this site as well as the owners and developers.

Without what I have learned here I would still be at a loss as to the timing of events that are of absolute importance and the proofs that are needed to make wise decisons.

Best regards,
airdale-- enjoy your travels

Thanks for the comments. Some of the comments and e-mails I get can fray the nerves.

By the way, I am 20 miles and 4000 vertical feet from the nearest town, but still have an off and on Internet connection. :-)

I agree with airdale. Keep up the good work. My only 'surprise' at this posting is probably indicative mostly of my having taken for granted for a while that reserve numbers are highly suspect. Obviously they are taken quite seriously in the oil industry and in the government agencies, etc. I think therein lies the big problem.

I suppose reserve numbers, in all their internationally differentiated glory, are still considered the sine-qua-non of future production prediction. If peak-oil comes as soon as it might (like last year) this position will begin to fray badly along with the general denial of peak oil plied by the more cornucopian of prognosticators.

REAL AMERICAN HEROS!

Here is to you Mr. Armchair General....

You, who could solve the Middle East Piece Process if only they would do what is so obvious to you.

You, who could write Nobel Prize winning Physics Thesis if only you could stop watching reruns of "Married with Children"

Here is to you. What would the holidays be without contribution around the old Yule log? You can hold forth on on Social Security and what do with all those "darn immigrants". Your enlightend discussion and restraint from personal attacks in debate make us long for drunk Uncle Dave to wake up and take his pants off in the front yard again.

Remember Mr. Arm Chair General... real solutiuon take real sweat... but talking about th