Title:
FILTER CAKE DEGRADATION COMPOSITIONS AND ASSOCIATED METHODS
Document Type and Number:
WIPO Patent Application WO2005113933
Kind Code:
A3
Abstract:
The present invention relates to removal of filter cakes in subterranean formations. More particularly, the present invention provides filter cake degradation compositions and methods of degrading filter cakes. The present invention provides methods of degradation a fluid-loss additive component in a portion of a filter cake in a subterranean formation comprising: contacting the fluid-loss additive component with a filter cake degradation composition that comprises a precipitation resistant enzyme, wherein the precipitation resistant enzyme is capable of degrading the fluid-loss additive component; and allowing the filter cake degradation composition to at least partially degrade the fluid-loss additive component in a portion of the filter cake. The present invention also provides filter cake degradation compositions comprising a precipitation resistant enzyme component that will at least partially degrade a portion of a filter cake.
Inventors:
DAVIDSON ERIC A (GB)
LAIRD ANUSZKA M (GB)
LAIRD ANUSZKA M (GB)
Application Number:
PCT/GB2005/001908
Publication Date:
April 27, 2006
Filing Date:
May 17, 2005
Export Citation:
Assignee:
HALLIBURTON ENERGY SERV INC (US)
WAIN CHRISTOPHER PAUL (GB)
DAVIDSON ERIC A (GB)
LAIRD ANUSZKA M (GB)
WAIN CHRISTOPHER PAUL (GB)
DAVIDSON ERIC A (GB)
LAIRD ANUSZKA M (GB)
International Classes:
C09K8/04; C09K8/52; C09K8/68; (IPC1-7): E21B37/06; E21B43/26
Foreign References:
| US6138760A | 2000-10-31 | |||
| US5165477A | 1992-11-24 | |||
| US5247995A | 1993-09-28 |
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