Self-Degrading High Temperature Stable Gel for Downhole Applications
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United States of America Patent
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app pub date -
Dec 21, 2012
filing date -
Nov 16, 2011
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Abstract
A method of treating a subterranean formation including providing a treatment fluid comprising an aqueous carrier fluid, a crosslinking agent, a pH-adjusting agent, and a terpolymer that comprises 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, and acrylic acid monomer units, or any salt thereof, where the treatment fluid does not include any gel stabilizers, or only minimal amounts of gel stabilizers. The treatment fluid is introduced into a subterranean formation and is allowed to form a gel in the subterranean formation. The gel is broken, without using an external breaker, after the gel has been in the subterranean formation for at least about one day.
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