Drill-in fluids and associated methods
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United States of America Patent
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Mar 30, 2010
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app pub date -
Sep 20, 2006
filing date -
Sep 20, 2006
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Abstract
Of the many methods provided, in one embodiment, the present invention provides a method comprising: placing a drill-in fluid in a subterranean formation, the drill-in fluid comprising an aqueous base fluid, a viscosifier, a relative permeability modifier fluid loss control additive, and a degradable bridging agent comprising a degradable material capable of undergoing an irreversible degradation downhole; and forming a self-degrading filter cake comprising the bridging agent upon a surface within the formation whereby fluid loss through the self-degrading filter cake is reduced.
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