Self-dissolving lost circulation treatment for producing formations
    1.
    发明授权
    Self-dissolving lost circulation treatment for producing formations 有权
    用于生产地层的自溶式流失处理

    公开(公告)号:US07281583B2

    公开(公告)日:2007-10-16

    申请号:US11088559

    申请日:2005-03-24

    IPC分类号: E21B43/27 E21B33/13

    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。