Wells – Processes – Distinct – separate injection and producing wells
Patent
1988-11-23
1989-08-01
Suchfield, George A.
Wells
Processes
Distinct, separate injection and producing wells
166273, 252 8554, E21B 4322
Patent
active
048526517
ABSTRACT:
A polymer is disclosed that is useful in increasing the viscosity of carbon dioxide. That polymer comprises a polydialkylsilalkylene polymer; wherein the dialkyl group is preferably dimethyl, methylethyl, or diethyl; and the alkylene group is preferably ethylene or methylene. Preferably, the polymer is polydimethylsilalkylene. 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 the polydialkylsilalkylene polymer and a sufficient amount of a cosolvent to form a solution of the polymer in the carbon dioxide.
REFERENCES:
patent: 4124073 (1978-11-01), Wier
patent: 4323463 (1982-04-01), Morduchowitz
patent: 4406799 (1983-09-01), Hunter
patent: 4502538 (1985-03-01), Wellington et al.
patent: 4609043 (1986-09-01), Cullick
patent: 4800957 (1989-01-01), Stevens, Jr. et al.
Chevron Research Company
Keeling E. J.
LaPaglia S. R.
Schaal E. A.
Suchfield George A.
LandOfFree
Polydialkylsilalkylene polymer useful in enhanced oil recovery u does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polydialkylsilalkylene polymer useful in enhanced oil recovery u, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polydialkylsilalkylene polymer useful in enhanced oil recovery u will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-125613