Squeeze composition for restoring isolation
    2.
    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。

    AQUEOUS RESIN COMPOSITIONS AND METHODS FOR CEMENT REPAIR
    6.
    发明申请
    AQUEOUS RESIN COMPOSITIONS AND METHODS FOR CEMENT REPAIR 有权
    水泥修补剂的水性树脂组合物和方法

    公开(公告)号:US20100137473A1

    公开(公告)日:2010-06-03

    申请号:US12622023

    申请日:2009-11-19

    IPC分类号: C09K8/42

    摘要: A composition for repairing voids or cracks in a cement sheath or plug comprises an aqueous epoxy resin, a hardener, an alkali-swellable material and an aqueous carrier fluid. The particle size of the alkali-swellable material is preferably smaller than 200 nanometers, thereby allowing the composition to penetrate cracks as small as 60 micrometers. A method for repairing voids or cracks in a cement sheath, thereby restoring zonal isolation, comprises preparing the composition, injecting the composition into voids or cracks in a cement sheath or plug and allowing the composition to viscosify and harden.

    摘要翻译: 用于修复水泥护套或塞子中的空隙或裂纹的组合物包括水性环氧树脂,硬化剂,碱溶胀性材料和水性载体流体。 碱溶胀性材料的粒径优选小于200纳米,从而允许组合物穿透小至60微米的裂纹。 一种用于修复水泥护套中的空隙或裂缝的方法,从而恢复区域分离,包括制备组合物,将组合物注入水泥护套或塞子中的空隙或裂缝中,并使组合物变粘和硬化。