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Vet67to82 (< 20)

Debt and Assets - new thinking NEEDED -pt 2a

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April 12, 2009 – Comments (4) | RELATED TICKERS: DXO.DL.DL2 , UCO , USO

I did pay attention in my education in Physics, Chemistry, and ... oh, yeah, Geology.  

 The Bakken shale formation interested me because it presented numerous divergences from traditional oil fields. First the is no pool to tap into and drain. Second, you can't inject heated steam as shale reacts with water and swells, which could render a well useless.   New drilling techniques being used in horizontal drilling hold promise in fracturing the shale and creating a "pool" location around the drill hole for the crude to pool and be withdrawn.   

But, the article: 

http://www.usgs.gov/newsroom/article.asp?ID=1911 

 is very interesting, but FLAWED for what it LEAVES out.   Of course, I understand, few people would, or could, read that article and comprehend what it was leaving out.    

But, and here is where paying attention in science pays off.  Supercritical carbon dioxide is beginning to be used to enhance oil recovery in mature oil fields.   It would also make perfect sense to employ this process in the Bakken shale.   

Supercritical carbon dioxide refers to carbon dioxide that is in a fluid state while also being at or above both its critical temperature and pressure, yielding rather uncommon properties. Carbon dioxide usually behaves as a gas in air at Standard Temperature and Pressure (STP) or as a solid called dry ice when frozen. If the temperature and pressure are both increased from STP to be at or above the critical point for carbon dioxide, it can adopt properties midway between a gas and a liquid. More specifically, it behaves as a supercritical fluid above its critical temperature (31.1°C) and critical pressure (72.9 atm), expanding to fill its container like a gas but with a density like that of a liquid. Supercritical CO2 is becoming an important commercial and industrial solvent due to its role in chemical extraction in addition to its low toxicity and environmental impact. The relatively low temperature of the process and the stability of CO2 also allows most compounds to be extracted with little damage or denaturing. 

Carbon dioxide is a greenhouse gas as it transmits visible light but absorbs strongly in the infrared and near-infrared.  So reducing CO2 in the atmosphere would also help the GREENHOUSE global warming complaints.  Supercritical carbon dioxide is seen as a promising green solvent because it is non-toxic, and a byproduct of other industrial processes. Furthermore, separation of the reaction components from the starting material is much simpler than with traditional organic solvents.

 I  strongly believe a lot more of the crude can be recovered than what your article considers ... and I'm certain, in future articles, you'll be reading a lot more about what I'm saying. 

Just remember ... you read it here first! 

 

Please also check out:

 

(1)  Debt and Assets - new thinking NEEDED

(2)  Debt and Assets - new thinking NEEDED -pt 2

  Thanks

4 Comments – Post Your Own

#1) On April 13, 2009 at 1:21 AM, devoish (96.28) wrote:

 

You are right, i read it here first.

I found this DOE article which suggests that 230bil, maybe a max 430 billion bbls of oil can be recovered from 6 major shale fields not just the bakken alone.

http://www.fossil.energy.gov/programs/oilgas/eor/Undeveloped_Domestic_Oil_Resources_Provi.html

The plan, I take it, is to pump liquid co2 at 1000psi into the shale where it will disolve into the oil to make it more viscuos and the pressure also helps pump it out. The 1/2 of the co2 that comes out with oil is then recaptured and pumped back into the ground for storage?

That USGS has not considered this in its estimate is possible by the dates of the articles

My impression is that the oil pumped out will release alot more co2 than is pumped in, so I am not convinced of the suggestion of a carbon benefit.

When the treehugger in me gets a hold of me I also have to ask, if this idea works, what is the plan for year 76 when this oil supply is gone? Windmills and solar?

Thanks for the info and the description of eor. i hope the reality can match the hope. 

looking forward to the coming hype, and exagerrations when the news gets bored with pirates and gets around to this idea.

Definitely one rec for you.

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#2) On April 13, 2009 at 9:29 AM, Vet67to82 (< 20) wrote:

Thanks for your reply

 The benefit of HEATED CO2 is the shale formation also includes  deposits that are thermal dependent and that will release natural gas when heated.  Double the bang for your buck.  The benefits of Supercritical carbon dioxide are, it's cheap,  the low temp ranges, the ease of  separation of the reaction components from the starting material, and the ease of recovery and re-use. 

I'll add more info soon.   

  

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#3) On April 13, 2009 at 6:49 PM, Vet67to82 (< 20) wrote:

Thank you for that link devoish.   Good addditional reference material. 

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#4) On April 13, 2009 at 7:17 PM, Vet67to82 (< 20) wrote:

Here are 3 very good links to Dept of Energy info (and PDFs) on recoverable crude in the USA. The current estimate by the DOE total 1.1 trillion barrels of crude with various estimates of the "recoverable" totals.

(1) http://www.fossil.energy.gov/programs/oilgas/publications/eor_co2/Undeveloped_Oil_Document.pdf

(2) http://www.fossil.energy.gov/programs/oilgas/publications/eor_co2/F_-_UndevDom_Oil_Res_FACT_SHEET.pdf

(3) http://www.fossil.energy.gov/programs/oilgas/publications/eor_co2/G_-_Updated_U_S__Oil_Resources_Table_2-1.pdf

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