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    • 6. 发明授权
    • Method for treating an underground formation
    • 处理地下地层的方法
    • US07510004B1
    • 2009-03-31
    • US10666658
    • 2003-09-19
    • James E. HessertD. Daniel WallaceJimmy D. DeLongCharles J. Neef
    • James E. HessertD. Daniel WallaceJimmy D. DeLongCharles J. Neef
    • E21B33/13E21B37/00
    • C09K8/512C08L1/26C08L1/286C09K8/426C09K8/44C08L2666/02
    • A swellable polymer gel composition for use in subterranean formations. The composition comprises water, a water soluble polymer, a water soluble crosslinking system and a swelling agent. The crosslinking system may be either a redox system or a chelating system. The amounts of the polymer and the crosslinking system are effective to form a substantially uniformly reacted tri-dimensional gel structure. To the gel solution, is added a swelling agent in an amount sufficient to increase the volume of the gel a predetermined percentage. The swelling agent may be a natural or a synthetic agent. A strengthening agent may be added to increase the gel strength of the composition. The composition has numerous uses and is particularly useful in oil industry applications such as plugging wells, sealing casing leaks and reducing water production from water-bearing hydrocarbon formations. The composition is economically produced, preserves the wellbore for future reentry in plugging operations, inhibits corrosion of casing by the hydration of water, inhibits the leaching of hazardous metal into the environment, and continuously expands in the presence of water.
    • 用于地下地层的可溶胀聚合物凝胶组合物。 该组合物包含水,水溶性聚合物,水溶性交联体系和溶胀剂。 交联体系可以是氧化还原体系或螯合体系。 聚合物和交联体系的量有效地形成基本上均匀反应的三维凝胶结构。 向凝胶溶液中加入足以使凝胶体积增加预定百分比的溶胀剂。 溶胀剂可以是天然或合成剂。 可以加入增强剂以增加组合物的凝胶强度。 该组合物具有许多用途,并且在石油工业应用中特别有用,例如堵塞井,密封套管泄漏和减少含水烃地层的水分产生。 该组合物经济地生产,保留井筒,以防止堵塞作业中的后续再入,通过水合水分抑制套管的腐蚀,抑制有害金属浸入环境中,并在水的存在下不断膨胀。