Composition and method for recovering hydrocarbon fluids...

Details Composition and method for recovering hydrocarbon fluids... Composition and method for recovering hydrocarbon fluids...

2011-04-19

2011-04-19

Kugel, Timothy J. (Department: 1765)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C166S295000, C166S305100, C507S224000, C507S266000

Reexamination Certificate

active

07928042

ABSTRACT:
This invention is directed to a composition comprising expandable polymeric microparticles comprising an interpenetrating polymer network (IPN). The IPN constrains the microparticle to an unexpanded volume average particle size diameter of from about 0.05 to about 5,000 microns. Labile cross-links in the polymers of the IPN are subject to degradation, which results in release of the expandable microparticle so that the microparticle expands. The invention is further directed to the use of the composition for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

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International Search Report and Written Opinion for PCT/US2009/041213.

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