Method of degrading cellulose-containing fluids during completio

Details Method of degrading cellulose-containing fluids during completio Method of degrading cellulose-containing fluids during completio

1995-01-09

1996-10-22

Suchfield, George A.

Wells

Processes

Chemical inter-reaction of two or more introduced materials

166278, 166308, 507201, 507215, 507216, E21B 4325, E21B 4326

Patent

active

055667597

ABSTRACT:
A method is shown for reducing the viscosity of a cellulose-containing fluid used during workover, fracturing or well completion operations. An enzyme system is used to degrade the polymer, whereby the fluid can be removed from the subterranean formation to the well surface. The enzyme systems are effective over broad pH and temperature ranges.

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patent: 5201370 (1993-04-01), Tjon-Joe-Pin
patent: 5224544 (1993-07-01), Tjon-Joe-Pin et al.
patent: 5226479 (1993-07-01), Gupta et al.
patent: 5247995 (1993-09-01), Tjon-Joe-Pin et al.
patent: 5421412 (1995-06-01), Kelly et al.
patent: 5441109 (1995-08-01), Gupta et al.

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