WELLBORE FLUID AND METHODS OF TREATING AN EARTHEN FORMATION
    43.
    发明公开
    WELLBORE FLUID AND METHODS OF TREATING AN EARTHEN FORMATION 审中-公开
    孔内液体法处理的地层

    公开(公告)号:EP2398865A1

    公开(公告)日:2011-12-28

    申请号:EP10708353.7

    申请日:2010-02-22

    IPC分类号: C09K8/035 C09K8/512 C09K8/575

    摘要: The present application describes improved compositions for wellbore fluids for use in downhole (e.g. oilwell) applications. The compositions comprise a blocked isocyanate (BI) component having a tolerance improving group (such as a hydrophilic group, e.g. an amine) bonded to it, and an active hydrogen component. When the BI group is unblocked, it reacts with the active hydrogen component to form a gel which, by virtue of the tolerance improving group, is more tolerant to contaminants (such as aqueous inorganic salts or brines) than the corresponding gel forms from unmodified BI. The application also relates to methods of treating an earthen formation using such a composition.