首页>
外国专利>
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
展开▼
机译:具有胶凝状态长期热稳定性的可凝析处理油的井处理方法
展开▼
页面导航
摘要
著录项
相似文献
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 for a crosslinked gel, and a terpolymer that comprises 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, and acrylic acid monomer units, or any salt thereof, wherein the gel stabilizer comprises a hydroxylamine; allowing the treatment fluid to form a gel in the subterranean formation, wherein the gel comprises the crosslinked gel formed after reacting said terpolymer with said crosslinking agent; and breaking the gel after it has been in the subterranean formation for at least about one day.
展开▼