Polysilalkylenesilane polymer useful in enhanced oil recovery us

Details Polysilalkylenesilane polymer useful in enhanced oil recovery us Polysilalkylenesilane polymer useful in enhanced oil recovery us

1990-11-13

1992-01-14

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166273, 252 8551, 252 8554, F21B 4322

Patent

active

050801694

ABSTRACT:
A polymer is disclosed that is useful in increasing the viscosity of carbon dioxide. That polymer comprises a polysilalkylenesilane polymer, preferably polydimethylsilmethylenedimethylsilane. That polymer can be used in a method for recovering oil from an underground oil-bearing earth formation penetrated by an injection well and a producing well, in which method carbon dioxide is injected into the formation to displace oil towards the producing well from which oil is produced to the surface. The viscosity of the carbon dioxide injected into the formation is increased at least three-fold by the presence of a sufficient amount of a polysilalkylenesilane polymer and a sufficient amount of a cosolvent to form a solution of the polymer in the carbon dioxide.

REFERENCES:
patent: 4609043 (1986-09-01), Cullick
patent: 4852651 (1989-08-01), Davis
patent: 4913235 (1990-04-01), Harris et al.
patent: 4989674 (1991-02-01), Davis

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