Annular isolators for expandable tubulars in wellbores
    7.
    发明授权
    Annular isolators for expandable tubulars in wellbores 有权
    在井筒中用于可膨胀管的环形隔离器

    公开(公告)号:US07299882B2

    公开(公告)日:2007-11-27

    申请号:US11624747

    申请日:2007-01-19

    IPC分类号: E21B33/12

    摘要: The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the tubing, the seal is deployed to form an annular isolator. An inflatable element carried on the tubing may be inflated with a fluid carried in the tubing and forced into the inflatable element during expansion of the tubing. Reactive chemicals may be carried in the tubing and injected into the annulus to react with each other and ambient fluids to increase in volume and harden into an annular seal. An elastomeric sleeve, ring or band carried on the tubing may be expanded into contact with a borehole wall and may have its radial dimension increased in conjunction with tubing expansion to form an annular isolator.

    摘要翻译: 本公开涉及在安装生产管道之后在钻孔中形成环形隔离器的装置和方法。 当环形密封装置进入钻孔时,环形密封装置被运送在生产管道中或上。 结合管道的膨胀,将密封件展开以形成环形隔离器。 管道上承载的可膨胀元件可以在管道中承载的流体膨胀,并在管道膨胀期间被迫进入可充气元件。 反应性化学物质可以在管道中携带并注入到环形空间中以相互反应并且环境流体增加体积并硬化成环形密封。 管道上承载的弹性体套筒,环或带可以膨胀成与钻孔壁接触,并且可以使其径向尺寸与管道膨胀一起增加以形成环形隔离器。

    Metal corrosion inhibitor for use in aqueous acid solutions
    10.
    发明授权
    Metal corrosion inhibitor for use in aqueous acid solutions 失效
    金属腐蚀抑制剂用于酸性水溶液

    公开(公告)号:US6056896A

    公开(公告)日:2000-05-02

    申请号:US87112

    申请日:1998-05-28

    摘要: The present invention provides an improved metal corrosion inhibitor for use in aqueous acid solutions which is relatively non-toxic and inexpensive. The corrosion inhibitor is a mixture comprised of oligomerized aromatic amines prepared by contacting the still bottoms residue produced in the distillation of quinoline from coal tar with oxygen in the presence of a catalyst.

    摘要翻译: 本发明提供一种改进的金属腐蚀抑制剂,用于相对无毒且便宜的酸性水溶液中。 腐蚀抑制剂是由催化剂存在下使来自煤焦油和氧气的喹啉蒸馏中产生的残余底物残留物制得的低聚芳族胺组成的混合物。