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Hubble's Model

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Hubble's Model

Unread postby nth » Wed 08 Jun 2005, 17:50:54

People say how accurate Hubble's Model is in predicting US PO, but is he really correct?
If you plug in URR for US, Hubble's Model doesn't work.

The only thing that we can see for sure is that Hubble is right about estimating the Peak and that oil is a finite resource and will Peak before half the oil is recovered. After all, we hit PO before recovering half the oil in the US.

Now, my question... why don't people come up with more accurate models for US PO that will successfully predict US decreasing oil production?
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Unread postby khebab » Wed 08 Jun 2005, 21:12:55

Do you mean Hubbert's Model?
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Unread postby ubercrap » Wed 08 Jun 2005, 21:47:30

Right, Hubbert was the geologist, Hubble was an astronomer (among many other talents). I believe that Hubbert was actually wrong about how much we could pump, but was right about the date. I believe that Deffeyes, in his book, explains Hubbert's calculations.
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Re: Hubble's Model

Unread postby WebHubbleTelescope » Wed 08 Jun 2005, 23:24:08

$this->bbcode_second_pass_quote('nth', 'P')eople say how accurate Hubble's Model is in predicting US PO, but is he really correct?
If you plug in URR for US, Hubble's Model doesn't work.

The only thing that we can see for sure is that Hubble is right about estimating the Peak and that oil is a finite resource and will Peak before half the oil is recovered. After all, we hit PO before recovering half the oil in the US.

Now, my question... why don't people come up with more accurate models for US PO that will successfully predict US decreasing oil production?


I am not the Hubble of who you speak, but of course it doesn't work. King Hubbert did not foresee the US's big dependence on marginal well production (i.e. stripper wells). Because of that, we see these long tails on the production downslope.

Timely question, too. In the past week, I have posted a two parter on what I call the Micro Peak Oil model, which demonstrates mathematically at least one way the dragged out decline in production manifests itself.

http://mobjectivist.blogspot.com/2005/0 ... model.html
http://mobjectivist.blogspot.com/2005/0 ... model.html

We will see some other strange things on the downslope as we start capping Prudhoe Bay wells. HeadingOut at The Oil Drum has that analysis pegged; see what he wrote today:
http://theoildrum.blogspot.com/2005/06/ ... -come.html
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Unread postby RonMN » Wed 08 Jun 2005, 23:54:47

IMHO i think because of stripper wells & other technology...we're seeing long tails on the "plateu"...not the downslope.

Because of these technologies, we can keep pumping at good rates of return but then there is no peak...it becomes a clif. 1 hour the well is pumping & the next hour you have nothing. Rather than accepting a slower production rate we force it to speed up until it's dead. Which (again IMHO) makes me think the downslope wont be a downslope at all...it will be a cliff we fall off of.

(Example: see Wile E. Coyote chasing the Road Runner)
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Unread postby ubercrap » Thu 09 Jun 2005, 00:03:48

$this->bbcode_second_pass_quote('RonMN', 'I')MHO i think because of stripper wells & other technology...we're seeing long tails on the "plateu"...not the downslope.

Because of these technologies, we can keep pumping at good rates of return but then there is no peak...it becomes a clif. 1 hour the well is pumping & the next hour you have nothing. Rather than accepting a slower production rate we force it to speed up until it's dead. Which (again IMHO) makes me think the downslope wont be a downslope at all...it will be a cliff we fall off of.

(Example: see Wile E. Coyote chasing the Road Runner)


Interesting you should use that analogy, did you read that article which I believe was published by the "Austin Chronicle" that compares America to Wile E. Coyote? We've run off the cliff and we haven't looked down yet to discover there is nothing under us...
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Unread postby WebHubbleTelescope » Thu 09 Jun 2005, 02:12:31

$this->bbcode_second_pass_quote('RonMN', 'I')MHO i think because of stripper wells & other technology...we're seeing long tails on the "plateu"...not the downslope.

Because of these technologies, we can keep pumping at good rates of return but then there is no peak...it becomes a clif. 1 hour the well is pumping & the next hour you have nothing. Rather than accepting a slower production rate we force it to speed up until it's dead. Which (again IMHO) makes me think the downslope wont be a downslope at all...it will be a cliff we fall off of.

(Example: see Wile E. Coyote chasing the Road Runner)


That's a complete misinterpretation. As The Oil Drum says, Alaska may be a cliff because you can't maintain stripper wells at depth in Prudhoe bay (too expensive).

The first part is a non-sequitor, a plateau by definition does not have tails.
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Unread postby nth » Thu 09 Jun 2005, 12:00:16

Yes, wrong spelling. :P
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Re: Hubble's Model

Unread postby nth » Thu 09 Jun 2005, 12:06:51

$this->bbcode_second_pass_quote('WebHubbleTelescope', '
')
http://mobjectivist.blogspot.com/2005/0 ... model.html
http://mobjectivist.blogspot.com/2005/0 ... model.html

We will see some other strange things on the downslope as we start capping Prudhoe Bay wells. HeadingOut at The Oil Drum has that analysis pegged; see what he wrote today:
http://theoildrum.blogspot.com/2005/06/ ... -come.html


Nice.
One thing though- when you look at real world data, there are small spikes caused by large fields being brought into production like Alaska, Gulf of Mexico, Africa, and I think we will see it in Caspian region, too.

Is it possible to even out these spikes? As it is impossible to predict these spikes, how can modeling take these into account to predict PO and how fast the drop?
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Unread postby FrankRichards » Thu 09 Jun 2005, 12:24:13

$this->bbcode_second_pass_quote('RonMN', '
')Because of these technologies, we can keep pumping at good rates of return but then there is no peak...it becomes a clif. 1 hour the well is pumping & the next hour you have nothing. Rather than accepting a slower production rate we force it to speed up until it's dead. Which (again IMHO) makes me think the downslope wont be a downslope at all...it will be a cliff we fall off of.


That's tertiary recovery, and you may well be right. But not about stripper wells. By definition they are low production long life jobbers. A classic stripper well pumps 10 barrels a day for 50 years. Mom and pop, or a couple of brothers can live nicely off a dozen or so stripper wells in Texas or Pennsylvania but only because they're part of a community that is supporting the grocery stores and truck mechanics with other income streams as well.

As someone pointed out downthread, that model doesn't hold on the north slope. Oil has to carry it all, and 10 barrels a day won't do it. So you cap the wells and go home at a production rate that would be a nice local industry in the lower 48.
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Unread postby Aaron » Thu 09 Jun 2005, 12:46:37

Many of the stripper wells here in Texas actually produce as little as 1 barrel per day.

But statistically these wells are irrelevant.

ASPO & WOCAP both cream their models and acknowledge anomalies can introduce unforeseen changes in expected behavior.

In the end none of these predictions is any better than the data available.

And like most physical sciences, these are living computations which are updated as new data becomes available.

ASPO may be wrong by a large margin, but I bet they are closer than USGS in predicting peak.
The problem is, of course, that not only is economics bankrupt, but it has always been nothing more than politics in disguise... economics is a form of brain damage.

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