Squeeze composition for restoring isolation
    1.
    发明授权
    Squeeze composition for restoring isolation 有权
    挤压组合物恢复隔离

    公开(公告)号:US08434552B2

    公开(公告)日:2013-05-07

    申请号:US12747554

    申请日:2008-12-11

    IPC分类号: E21B33/13 C09K8/42

    CPC分类号: C09K8/428

    摘要: Compositions containing an alkali swelling polymer and a pH buffer with a pH between 3 and 7 may be used to treat a wellbore. The pH buffer prevents the swelling of the alkali swellable polymer. The compositions may be placed in the wellbore, whereupon they contact another material with pH increasing properties. The pH of the compositions increases, causing the compositions to swell and form a seal. The alkali swelling polymer may be an alkali swelling latex.

    摘要翻译: 可以使用含有碱溶胀性聚合物和PH值在3和7之间的pH缓冲液的组合物来处理井眼。 pH缓冲液可防止碱溶胀性聚合物溶胀。 组合物可以放置在井眼中,于是它们接触具有pH增加性质的另一种材料。 组合物的pH增加,导致组合物膨胀并形成密封。 碱溶胀聚合物可以是碱溶胀胶乳。