Treatment fluids and methods of forming degradable filter cakes comprising aliphatic polyester and their use in subterranean formations
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United States of America Patent
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Mar 9, 2010
Grant Date -
Apr 5, 2007
app pub date -
Dec 5, 2006
filing date -
Sep 17, 2003
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Abstract
Presented herein are improved bridging agents comprising a degradable material, improved subterranean treatment fluids comprising such improved bridging agents, and methods of using such improved subterranean treatment fluids in subterranean formations. An example of a method presented is a method of drilling a well bore in a subterranean formation. Another example of a method presented is a method of forming a self-degrading filter cake in a subterranean formation. Another example of a method presented is a method of degrading a filter cake in a subterranean formation. An example of a composition of the present invention is a treatment fluid including a viscosifier, a fluid loss control additive, and a bridging agent comprising a degradable material. Another example of a composition presented is a bridging agent comprising a degradable material.
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