Thermally responsive aqueous silicate mixture
    2.
    发明授权
    Thermally responsive aqueous silicate mixture 有权
    热反应性硅酸盐混合物

    公开(公告)号:US06660694B1

    公开(公告)日:2003-12-09

    申请号:US10211182

    申请日:2002-08-02

    IPC分类号: C09K300

    CPC分类号: C09K8/5045 C09K8/506

    摘要: Sealing a zone in a subterranean well-formation is effected with an aqueous silicate solution containing an alkali metal silicate, at least one activator and a mixture of a chelating agent and a phosphonate. This composition greatly increases the divalent ion tolerance of the silicate gelling system.

    摘要翻译: 用含有碱金属硅酸盐,至少一种活化剂和螯合剂和膦酸盐的混合物的含水硅酸盐溶液来实现地层中的区域的密封。 该组合物大大增加了硅酸盐胶凝体系的二价离子耐受性。