Methods of degrading filter cakes in a subterranean formation
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United States of America Patent
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Mar 3, 2009
Grant Date -
Dec 21, 2006
app pub date -
Aug 24, 2006
filing date -
Aug 14, 2003
priority date (Note) -
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Abstract
Many methods are presented including one that comprises: providing a well drill-in and servicing fluid comprising an aqueous fluid, a viscosifier, a fluid loss control additive, a bridging agent, and an orthoester composition; using the well drill-in and servicing fluid to drill a well bore in a subterranean formation; allowing the well drill-in and servicing fluid to establish a filter cake in at least a portion of the well bore; contacting at least a portion of the filter cake with a breaker fluid comprising an orthoester composition; and allowing at least a portion of the filter cake to degrade.
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