Compositions and methods for weighting a breaker coating for uniform distribution in a particulate pack
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United States of America Patent
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Feb 21, 2006
Grant Date -
May 19, 2005
app pub date -
Nov 18, 2003
filing date -
Nov 18, 2003
priority date (Note) -
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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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