Fluid loss control
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United States of America Patent
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Sep 13, 2011
Grant Date -
May 27, 2010
app pub date -
Nov 26, 2008
filing date -
Nov 26, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A fluid loss control method uses a fluid loss control pill in a well in advance of a completion operation. An embodiment of the fluid loss control pill comprises polyester solids that are hydrolysable and can exhibit plastic deformation at formation conditions. An embodiment of the method comprises spotting the fluid loss control pill in the well adjacent to a formation to form a filtercake to inhibit fluid entry from the well into the formation, performing a completion operation comprising contacting the filtercake with overbalanced wellbore fluid, and degrading the filtercake wherein the polyester particles are hydrolyzed to remove formation damage.
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