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M. King Hubbert on

General discussions of the systemic, societal and civilisational effects of depletion.

Re: Need help with Hubbert Linearization for U.S.

Unread postby WebHubbleTelescope » Mon 10 Apr 2006, 21:16:21

$this->bbcode_second_pass_quote('Geko45', '')$this->bbcode_second_pass_quote('WebHubbleTelescope', 'N')ow that would have been a really inventive class project.

Methinks that you are being to philosophically minded to be of any metaphysical good.

:-D


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Re: Need help with Hubbert Linearization for U.S.

Unread postby WebHubbleTelescope » Mon 10 Apr 2006, 21:33:01

$this->bbcode_second_pass_quote('Doly', '')$this->bbcode_second_pass_quote('WebHubbleTelescope', '
')No one has yet shown how you can derive the curve from first principles.


If you think it's a gaussian, it derives pretty much from the Central Limit Theorem. A big enough collection of curves under certain conditions that production curves will fulfill will aggregate to a gaussian curve.


But no one thinks it is a Gaussian. Consider that this makes absolutely no sense from first principles. Gaussians extend symmetrically to the left and right of the peak. However, since oil was only discovered in the USA in 1859 and a few years before that worldwide, no way can you even begin to fit it to a Gaussian. That is, you can't fit to the tails before 1859, which is what the Gaussian expects.

A better, but not by much, approximation is to use a Log-Normal distribution, which forces a positive value (i.e. time) to go negative by taking the logarithm of the number.

But in general, the Central Limit Theorem rarely works for a stochastic time series, which is what the oil discovery profile is.
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Re: Need help with Hubbert Linearization for U.S.

Unread postby Geko45 » Tue 11 Apr 2006, 18:11:08

$this->bbcode_second_pass_quote('WebHubbleTelescope', 'F')or the most important question of our time, we find a failure to commit. The fear of not succeeding strikes again.

We'll gee, I bet you're a load of fun at parties. Cut me some slack here, this is my first attempt at doing modeling of any significant complexity. I understand your point, but I'm not there yet and if no one else has done it then I'd guess that you're not there yet either. To be perfectly honest, I am exceeeding the expectations of my current undergrad class with this project. I've also managed to get the other members of my project team thinking along these lines where they were completely oblivious to this problem before. I also have a chance to present this to the remainder of my class and I may make a few of them aware too. I consider that a significant (albeit humble) contribution to awareness.

So in summary.

:razz:
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Re: Need help with Hubbert Linearization for U.S.

Unread postby WebHubbleTelescope » Tue 11 Apr 2006, 20:27:02

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Critics of Hubberts 1956 Prediction

Unread postby thepeople » Tue 14 Nov 2006, 10:47:14

Hey, Im just wondering has anyone got any links to artciles or sites from around the time when Hubbert made his USA prediction to critics views on his predcition etc. Just tryin to find sum references that are in context and see who actual was against it etc. Any help would be appreciated
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Re: Critics of Hubberts 1956 Prediction

Unread postby shakespear1 » Tue 14 Nov 2006, 12:00:47

$this->bbcode_second_pass_code('', 'Fifty years ago this week, on March 8, 1956, at a meeting of the American Petroleum Institute in San Antonio, Texas, M. King Hubbert, in the preprinted version of his prepared remarks, had the following statement, "According to the best currently available information, the production of petroleum and natural gas on a world scale will probably pass its climax within the order of a half century (i.e., by 2006), while for both the United States and for Texas, the peaks of production may be expected to occur with the next 10 or 15 years (i.e., 1966 to 1971)." As more and more people are learning, Lower 48 oil production, as predicted by Dr. Hubbert, peaked in 1970, and it has fallen fairly steadily since 1970.')

I would go to the library and try to find out what industry magazines were published in the Oil and Gas Business and search for anything that was published shortly after the above presentation. I would imagine that a year or two after the presentation the subject would have gone off into oblivion.
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Re: Critics of Hubberts 1956 Prediction

Unread postby thepeople » Thu 16 Nov 2006, 08:24:55

thanx for the reply, any idea when the statement was made that hubbert was actuallt right! when did the oil inudstry sate that production pekaed in 1970???
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Re: Critics of Hubberts 1956 Prediction

Unread postby shakespear1 » Thu 16 Nov 2006, 08:49:42

Here I wouldn't be able to tell you much as I always had my head in industry literature about technology. Equations and such :-D :-D :-D

Take a look at dieoff.org. There's a lot mentioned there and was the first site that I found that started me off on the subject of PO.

I read Hubbard's stuff earlier but to be honest it did not ring an alarm loudly in my ear. The same was for my industry friends. I can honestly say that this was never discussed extensively by anyone I worked with until about 2002-2003 !!!! I mentioned PO to some friends in 2001 but the discussion died off very quickly. About 5 minutes of discussion and then we went off to do our every day engineering stuff. :) :) :)
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Hubbert's Peak on MMMMMMMMMMMMMoneytalk

Unread postby I_Like_Plants » Sat 24 Feb 2007, 18:53:34

If you listen to AM radio, you're familiar with the program MMMMMMMoneytalk. They're on AM-810 where I am right now, and they're about to discuss Hubbert's Peak. Cool 8)
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Re: Hubbert's Peak on MMMMMMMMMMMMMoneytalk

Unread postby I_Like_Plants » Sat 24 Feb 2007, 19:30:21

OK they're about to start, they'll have Kenneth Deffeyes (pronouncing it deff-AYS) on, talking about his book, "Hubbert's Peak".

mp3's of this MMMMMmmmoneytalk program should be available, so it might be one to find and put in with the audios offered on this site.
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Re: Hubbert's Peak on MMMMMMMMMMMMMoneytalk

Unread postby Jack » Sat 24 Feb 2007, 20:22:37

Any chance of a summary...and, perhaps, a link to the mp3?

It sounds interesting, but I'm not going to be able to listen today.

Thanks, Jack.
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Re: Hubbert's Peak on MMMMMMMMMMMMMoneytalk

Unread postby cynicalheretic » Sat 24 Feb 2007, 23:34:38

AM wow!!! that would be great, oh no wait, that isn't NBC red and this isn't 1933 when AM radio was still valid. If you get a chance tell David Sarnoff about this, perhaps he can do an op-ed
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Re: Hubbert's Peak on MMMMMMMMMMMMMoneytalk

Unread postby I_Like_Plants » Sun 25 Feb 2007, 03:00:47

Geeze, ok SSB is a much more effecient mode, but AM radio is where the talk is, it's also easiest to build an AM transmitter and receiver.

Just look up Bob Brinker and Moneytalk, you should be able to find it.
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A gift from energy bulletin/ hubbert tribute

Unread postby killJOY » Fri 09 Mar 2007, 08:25:58

A short video of an older King Hubbert explaining peak oil. Wonderful!

http://www.energybulletin.net/26976.html
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Re: A gift from energy bulletin/ hubbert tribute

Unread postby Twilight » Fri 09 Mar 2007, 21:11:16

Didn't know something like this existed. Thanks!
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Re: A gift from energy bulletin/ hubbert tribute

Unread postby perdition79 » Sat 10 Mar 2007, 01:11:28

On his chart, peak was shown as 40 billion barrels of oil a year. He was pretty generous considering current levels, at peak, are about 31 billion barrels a year.
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Re: A gift from energy bulletin/ hubbert tribute

Unread postby Twilight » Sat 10 Mar 2007, 09:18:53

$this->bbcode_second_pass_quote('perdition79', 'O')n his chart, peak was shown as 40 billion barrels of oil a year. He was pretty generous considering current levels, at peak, are about 31 billion barrels a year.

In 1976, that was a valid assumption, as world production was still tracking a perfect bell curve. It was the Iranian Revolution in 1979 which cut off the top of the curve and moved peak back 10-15 years. He was actually correct, just not in a position to predict political events and their impact.
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Re: A gift from energy bulletin/ hubbert tribute

Unread postby killJOY » Sat 10 Mar 2007, 10:11:42

The more I view this, the more I love it.

He ANTICIPATED the objections people throw around now! He foresaw that the embargos of the 70s would delay the peak "about ten years."

He was no prophet, just a great forecaster, probably the sine qua non of a great scientist.
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Problems with Hubbert Linearization

Unread postby Newsseeker » Wed 14 Mar 2007, 10:33:42

However, one thing is critical to keep in mind. If you are going to use the model for forecasting, the model must be tested. Testing the model is called “validation”, or sometimes “back-casting.” This involves feeding the model real data, and observing how well the predictions match up with the observations. If the predictions match up on a consistent basis, and any large variations are explainable, you have the makings of a predictive model. If you have not validated your model, or if you have attempted to validate it and found that the predictions were inconsistent, the model should be used with caution (if at all). In this essay I have done some back-casts on the Hubbert Linearization (HL) model and attempted to use it to make predictions using historical data.
....http://www.theoildrum.com/node/2357#more

This article/essay brings up the problems associated with trying to use HL techniques for forecasting. It is a very good essay and brought up a lot of points that I had previously not known about. Thoughts??
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Re: Problems with Hubbert Linearization

Unread postby nth » Wed 14 Mar 2007, 15:07:03

$this->bbcode_second_pass_quote('Gideon', '
')
1. I've never seen a written communication begin with the word "however". So that's a first for me. Thanks.

2. Although I have seen people praise their own work, I like your twist on the ol' "I ain't braggin' cuz it's true" approach; I like the way you note that your essay is so damn good that it brought up points that even you, the author, had not previously considered. Wow! That is good stuff.

3. Thanks for the cite. It was a good read.


1. The article does not begin with however.

About the article, this is a known issue, and pointed out by experts about how it does not take into account technology and future discoveries. The counter argument which was not discuss in that article is that it takes a lot of new oil to change the peak date by any significant margin.

Of course, if you take any major oil producing region and see historical records with two or more peaks, then you will be showing HL's weakness in predicting peak oil production. HL is never good at predicting URR.
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