Wells – Processes – Chemical inter-reaction of two or more introduced materials
Patent
1998-12-07
2000-10-31
Bagnell, David
Wells
Processes
Chemical inter-reaction of two or more introduced materials
166308, 166312, E21B 3707, E21B 4326
Patent
active
061387606
ABSTRACT:
A treatment for wells and/or subterranean formations in which a pre-treatment fluid is introduced prior to a polymer-containing treatment fluid, such as a hydraulic fracturing fluid. The pre-treatment fluid may contain an enzyme and/or oxidative breaker effective to degrade the polymer in the polymer-containing treatment fluid. The enzyme or oxidative breaker of the enzyme pre-treatment fluid enhance degradation of polymer filter cake from the reservoir-side of the filter cake during flow-back of the treatment fluid.
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Lopez Enrique
Tjon-Joe-Pin Robert M.
Bagnell David
BJ Services Company
Dougherty Jennifer R.
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