Method for controlling the flow of liquids through a subterranea

Details Method for controlling the flow of liquids through a subterranea Method for controlling the flow of liquids through a subterranea

1986-10-03

1987-12-15

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166295, 166300, E21B 33138, E21B 4320

Patent

active

047126175

ABSTRACT:
The permeability of subterranean formations, and hence, the mobility of fluids through the formation, can be controlled by introducing a carboxamide polymer and a hypohalite such as sodium hypochlorite to the formation at conditions such that the polymer has been cross-linked, either prior to its introduction or in situ, to form a gel. By this method, the permeability of highly porous zones can selectively be reduced. Therefore, in an enhanced recovery operation wherein a drive fluid is injected into the subterranean formation to force hydrocarbon therefrom, the drive fluid can more uniformly sweep the formation resulting in a more effective recovery process.

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