Methods of generating gas in well fluids
    8.
    发明授权
    Methods of generating gas in well fluids 有权
    在井液中产生气体的方法

    公开(公告)号:US07156175B2

    公开(公告)日:2007-01-02

    申请号:US10789712

    申请日:2004-02-27

    IPC分类号: E21B43/22 E21B43/27

    CPC分类号: C09K8/38

    摘要: The present invention relates to methods of chemically generating gas in aqueous fluids utilized in the drilling and completion of wells such as drilling fluids, spacer fluids, and aqueous acid solutions. In one embodiment, the invention provides a method of preventing the formation of fractures in a subterranean formation during a drilling operation. In other embodiments, the present invention provides methods of separating a first fluid and a second fluid in a subterranean formation; methods of forming lightweight well treatment fluids; methods of enhancing the permeability of a subterranean zone; lightweight drilling fluids; lightweight spacer fluids; foamed aqueous acidic well treatment fluids; and methods of making foamed aqueous and aqueous acidic well treatment fluids.

    摘要翻译: 本发明涉及在钻井液,间隔液和含水酸溶液的钻井和完井中使用的含水流体中化学产生气体的方法。 在一个实施例中,本发明提供了一种在钻井操作期间防止在地层中形成裂缝的方法。 在其它实施例中,本发明提供了分离地下地层中的第一流体和第二流体的方法; 形成轻型井处理液的方法; 提高地下区域渗透性的方法; 轻型钻井液; 轻质间隔液; 发泡水性酸性处理液; 以及制造发泡的含水和酸性水溶液的处理流体的方法。