Compositions and methods for weighting a breaker coating for...

Details Compositions and methods for weighting a breaker coating for... Compositions and methods for weighting a breaker coating for...

2006-02-21

2006-02-21

Suchfield, George (Department: 3676)

Wells

Processes

Graveling or filter forming

C166S300000, C166S311000, C507S201000, C507S241000, C507S260000, C507S270000, C507S271000, C507S277000, C507S902000

Reexamination Certificate

active

07000701

ABSTRACT:
The present invention involves methods and compositions for treating subterranean formations, and more specifically, relates to improved methods and compositions for degrading filter cake deposited in a subterranean formation by effecting a uniform distribution of a filter cake breaker. One embodiment of the present invention provides a weighted encapsulated breaker comprising a breaker material; and, a coating material comprising a polymer material and a filler material having a specific gravity of at least about 6.5.

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patent: 2002/0036088 (2002-03-01), Todd
patent: 1 152 121 (2001-11-01), None
SPE 68968, “Laboratory Devices for Testing of Delayed-Breaker Solutions on Horizontal Wellbore Filter Cakes,” Brad Todd and Rob Murphy, May 2001.
Foreign communication from a related counterpart application dated May 24, 2005.

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