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公开(公告)号:US07281583B2
公开(公告)日:2007-10-16
申请号:US11088559
申请日:2005-03-24
CPC分类号: C09K8/512
摘要: Methods and compositions for sealing subterranean zones having temperatures in the range of about 80° F. to about 300° F. are provided. In a method of the invention, a sealing composition of the invention of water, a substantially fully hydrated depolymerized polymer and poly lactic acid, with a pH above about 8.5, is introduced into the subterranean zone wherein it becomes substantially rigid and seals the zone when exposed to subterrnean zone temperatures above about 80° F.
摘要翻译: 提供了用于密封温度在约80°F至约300°F范围内的地下区域的方法和组合物。 在本发明的方法中,将本发明的水,基本上完全水合的解聚聚合物和聚乳酸的pH值高于约8.5的密封组合物引入到地下区域中,其中其变得基本上刚性并且当 暴露于高于约80°F的亚区域温度。