Oil recovery process using a viscosity adjusted gelation system

Details Oil recovery process using a viscosity adjusted gelation system Oil recovery process using a viscosity adjusted gelation system

E - Fixed Constructions

21

B

31/13

E21B 33/13 (2006.01) C09K 8/512 (2006.01)

Patent

CA 1261605

OIL RECOVERY PROCESS USING A VISCOSITY ADJUSTED GELATION SYSTEM ABSTRACT A gelation system for reducing the permeability of a subterranean region is provided by sequentially injecting slugs of a polymer solution and a crosslinking agent solution capable of crosslinking the polymer. The viscosity of the crosslinking agent solution is adjusted to facili- tate mixing of the slugs in the desired treatment region to a form gel therein and minimize premature gelation outside of the treatment region.

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