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WELL TREATMENT METHODS USING GELLABLE TREATMENT FLUIDS HAVING LONG TERM THERMAL STABILITY OF THE GELLED STATE.
WELL TREATMENT METHODS USING GELLABLE TREATMENT FLUIDS HAVING LONG TERM THERMAL STABILITY OF THE GELLED STATE.
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机译:使用凝胶化处理液的气井处理方法具有长期的凝胶状态热稳定性。
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摘要
Gellable treatment fluids containing a terpolymer that comprises 2-acrylamido-2- methylpropanesulfonic acid, acrylamide, acrylic acid monomer units can be used in various subterranean operations where it is necessary for the treatment fluid to remain in a gelled state for extended periods of time at high formation temperatures. Methods for treating a subterranean formation can comprise providing a treatment fluid comprising an aqueous carrier fluid, a crosslinking agent, a gel stabilizer, and a terpolymer that comprises 2-acrylamido-2- methylpropanesulfonic acid, acrylamide, and acrylic acid monomer units, or any salt thereof; introducing the treatment fluid into a subterranean formation; allowing the treatment fluid to form a gel in the subterranean formation; and breaking the gel after it has been in the subterranean formation for at least about one day.
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