Internal Breaker for Fluid Loss Control Pills and Method
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United States of America Patent
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Issued Date -
Jul 3, 2014
app pub date -
Dec 28, 2012
filing date -
Dec 28, 2012
priority date (Note) -
Abandoned
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Abstract
A method of treating a subterranean formation. The method may include providing a fluid-loss control pill that comprises an aqueous base fluid, a gelling agent, and an internal breaker that is selected from the group consisting of inorganic delayed acids or inorganic salts. The method can include introducing the fluid-loss control pill into a subterranean formation, allowing the internal breaker to reduce the viscosity of the pill after a delay period, and allowing the fluid-loss control pill to break.
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