Carbon dioxide compatible non-aqueous crosslinked fracturing...

Details Carbon dioxide compatible non-aqueous crosslinked fracturing... Carbon dioxide compatible non-aqueous crosslinked fracturing...

C - Chemistry, Metallurgy

09

K

C09K 8/68 (2006.01) C08K 3/20 (2006.01) C08K 5/14 (2006.01) C08L 5/00 (2006.01) E21B 43/25 (2006.01) E21B 43/267 (2006.01)

Patent

CA 2444288

Alcohol based hydraulic fracturing fluids useful for treating oil and gas wells are disclosed. The fluids are compatible with carbon dioxide, and comprise an alcohol, a polymer, a crosslinking agent, and a breaker. Hydroxypropyl guar with a molar substitution of about 1.2 to about 2.2 is identified as a presently preferred polymer

L'invention concerne des fluides de fracturation hydraulique à base d'alcohol permettant de traiter des puits de pétrole et de gaz. Les fluides sont compatibles avec le dioxyde de carbone et comprennent un alcohol, un polymère, un agent de réticulation et un broyeur. Le polymère actuellement préféré est le guar hyroxypropylé avec une substitution molaire d'environ 1,2 à 2,2.

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