Process for treating oil-bearing formation

Details Process for treating oil-bearing formation Process for treating oil-bearing formation

1996-05-17

1997-07-01

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166300, 507215, 507225, 507903, 523130, E21B 33138, E21B 4322

Patent

active

056427832

ABSTRACT:
A process for altering the permeability of a subterranean formation comprises injecting into the subterranean formation a gelling composition which comprises a carboxylate-containing polymer, a crosslinking agent, and a liquid such as a produced brine wherein the polymer forms a gel in the formation, in the presence of the crosslinking agent. The polymer can have a molecular weight of from about 10,000 to about 30,000,000, contain about 0.01 to about 10 mole % of a carboxylate group, and be present in the gelling composition in the range of from about 100 to about 100,000 mg per liter of the

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