330 comments on Water in the Gas Tank
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330 comments on Water in the Gas Tank
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GAIA Host Collective
"So, again, are we (TOD) gonna spend another day debating this and that of what is wrong or right above, or do we want to discuss some larger points."
You've got to be kidding? Yes, of course, the public should be reached. But SA peaking is not a large point? TOD has people who know about this stuff and can argue it. What could possibly be of greater interest? There's no conflict between the two goals.
Reaching the public is not easy when you have spinmeisters like CERA preaching rosy outlook into 2030 and beyond. The sad truth is that "jerkin yerkin" and his band of merry makers have far greater influence in a 2 minute intervies on MSM with the clueless public and policy makers in denial than two years of TOD. The public will not be ready for facing reality let alone a change until we hit a wall.
soleman and davebygolly,
Agree with your points, and to me, Stuart's work in an EXCEPTIONAL article, well worked arguement, and great documentation is EXACTLY the stock in trade of what TOD is and why, even when I get pizzed at some small point or another, I keep coming back.
As to Yergin and the CERA merry makers, the problem is worse than that: CERA could be easily dismissed if the EIA of the U.S. Department of Energy and USGS did not basically back him up. I once argued that they should have to go before Congress and testify under oath to thier assessments once and for all, and if they turn out to have based thier numbers on thin air, be held accountable for them. The EIA recent long term outlook gives fuel and energy costs almost across the board as being no higher out to 2030 than we have already seen:
http://www.eia.doe.gov/oiaf/aeo/growth.html#prices
(!!!!)
Add to this the Saudi claims that they have it covered and ExxonMobil claims that there is no sign of peak anything and you see the problem. Those who accept the need for concern are having to persuade the public, investors, planners, etc. to bet against ALMOST EVERY MAJOR ENERGY POLICY INSTITUTION IN THE DEVELOPED WORLD. An uphill fight to say the least, and now almost impossible, due to bankers and policy makers sourcing the Department of Energy stats to get information, investment and funding for alternatives and mitigation will rapidly dry up.
General Motors now says that the plug hybrid car the "Volt" will possibly never be built. Volvo has essentially ignored its magnificant lithium battery electric car. Ford has done no further development on it's hydraulic hybrid truck/SUV which was developed in conjunction with Eaton Corp. and the EPA.
Why? If one assumes a petroleum price at or below $75 per barrel out to 2030, non of the above technology makes any sense to develop. It will simply not have a customer base.
Thanks Stuart Staniford, EXCELLENT ARTICLE, one for my "saved" file, as I have said before, if I have to accept someones numbers, I would accept yours long before I accept CERA, EIA, or USGS numbers, which are to me as screwed up as soup sandwich! :-)
(now, if we can resolve just how much oil is going to come on line from the Khurais field, the empty quarter, and offshore, we could get a clear picture of what is going to happen....until then, it's still a shot in the dark...:-)
PREPARE FOR ANYTHING.
Roger Conner Jr.
Remember, we are only one cubic mile from freedom
Hi Roger,
Thanks and
re: "...An uphill fight to say the least"
Did you see Richard Heinberg's essay about his experience talking to EU people? http://www.energybulletin.net/27278.html
It's hard to say, is my take on it. Uphill...yes. (or...no?) And...how steep? We don't really know, do we? (In fact, this seems to have a much greater uncertainty factor than any reserves discussion. Despite many people's firmly held opinions.)
re: "...It will simply not have a customer base."
In regard to policies though, such as stopping some subsidies and implementing others...for eg., ag reform. and better ag policies (as perhaps touched on above)...the "customer base" perhaps can be changed. Just as it has been manipulated in a real sense in the past.
This is a great article on water flooding.
If a field is rested for a decent period (no idea how long) in conditions where it has been producing with a significant and rising water cut, does the oil permeate to the top over time so that production can once again proceed from drier oil at the top?
If so, the Saudis, with so many fields must be able to do this, as Euan suggests, but maybe their ability to control the situation, as Stuart points out so eloquently, is "in decline" as well.
Saildog, you ask a great question and I am not sure of the answer. But I do have a couple of comments. "Resting the fields" is a term I have only heard on this, and other, forums. I have never encountered the term in any technical literature or on any book about peak oil or oil production in general.
The only thing I think resting a field might do would be if coning had occurred then shutting the field down for several years might mitigate the situation somewhat. That is oil from the sides of the cone might migrate in and push the cone down some but I am not at all sure about this. Just guessing I would tend to doubt that resting a field would help the coning very much.
But I would bet that it would not help the water/oil mix one bit. I think it would take decades, or even centuries or more for the oil and water to separate inside the reservoir.
However I would just love to hear from someone who does know what the hell they are talking about on this subject because I sure as hell do not. But never having encountered the principle anywhere except on fourms such as this, I tend to doubt that it is a widespread practice.
Ron Patterson
ron, i agree with you to an extent. my first reaction when i read about "resting" the wells here for the first time was relative to water coning. my experience is that if/when coning occurs, shutting in the well for a time will give an instantaneous improvement but for a very limited time.
however, the saudi's may be "resting" the wells to their benifit. 1) resting the wells has the same effect as production at a lower rate. 2) the combination of high porosity and permeability, reservoir stratification and steep dip may actually result in gravity segregation of the oil and water (some on here dismiss this idea out of hand). 3) during the shut in periods, water may "imbibe" into the lower porosity rock and displace some oil "into the fairway". imbibition is very effective in displacing oil, although limited to a few % of pore volume.
At least in Uthmaniyah, the Saudis explicitly have a bunch of wells on cyclic production, where they produce for 6 mos and then rest 6 mos.
Thanks, Stuart,
re: Do they say explicitly why? Or, do you know (for sure) why?
SPE 98847 saith:
Stuart, et all,
I thought you might be interested in this story. Though its use for oil fields may not work one day, it is interesting and its about "flow" of liquids and what forces can be used to act upon that flow
http://www.livescience.com/technology/070327_laser_jet.html
"Light is actually pushing onto us slightly. This effect is called radiation pressure," Zhang said.
This gentle pressure generated by photons—particles of light—ordinarily goes unnoticed. But the liquid used in the new experiment—a soapy mixture—has such an incredibly weak surface that even light can deform it. It created a phase change that's a bit like how shampoo turns to soap when you add water, the scientists explained.
The newfound technique might offer a new way to control the flow of fluids through channels thinner than a human hair for biomedical and biotechnological applications, the researchers said.
Quid Clarius Astris
Ubi Bene ibi patria
In US wells using pumps, resting a well might simply refer to allowing the oil to seep in and fill the borehole. I know a lot of stripper wells operate on a few days a week (or month) type of schedule. Like you, Ron, I don't how the 'resting' would affect a high-production water drive oil field like in KSA, which is obviously going to be quite different than pump driven stripper wells.
The same issue has come up with regard to the Russian wells that had several years of 'resting' before being put into high production again. I suspect it is a combination of geological factors such as oil migration (imbibing) and technological factors such as horizontal wells, etc. that brought about the second Russian peak.