Conformance correction to improve hydrocarbon recovery from...

Details Conformance correction to improve hydrocarbon recovery from... Conformance correction to improve hydrocarbon recovery from...

E - Fixed Constructions

21

B

166/25

E21B 33/138 (2006.01) C09K 8/512 (2006.01)

Patent

CA 1278256

CONFORMANCE CORRECTION TO IMPROVE HYDROCARBON RECOVERY FROM A SUBTERRANEAN FORMATION ABSTRACT A non-crosslinking salt of a monovalent cation is added to a gela- tion solution comprising an acrylamide polymer and a redox crosslinking system to render the viscosity and uniformity of the resulting gel less sensitive to the concentrations of the gel components. The gel is used for conformance correction treatments of subterranean hydrocarbon- bearing formations to reduce the permeability of a high permeability zone adjacent a low permeability zone.

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