Wells – Processes – Cementing – plugging or consolidating
Patent
1995-04-14
1996-08-20
Suchfield, George A.
Wells
Processes
Cementing, plugging or consolidating
166300, 507215, 507225, 507903, 523130, E21B 33138, E21B 4322
Patent
active
055470254
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 1,000,000, contain about 0.01 to about 5 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 composition.
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Ahmed Iqbal
Moradi-Araghi Ahmad
Phillips Petroleum Company
Shay Lucas K.
Suchfield George A.
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