Compositions and methods for treating lost circulation
    1.
    发明申请
    Compositions and methods for treating lost circulation 有权
    治疗流失的组成和方法

    公开(公告)号:US20070169936A1

    公开(公告)日:2007-07-26

    申请号:US10556867

    申请日:2004-05-12

    摘要: A cement system for use in treating lost circulation includes a slurry of cement, water and a super-absorbent polymer which absorbs free water in the slurry to form a gel—ore preferably a solid-like structure—when placed in the well, and which releases the absorbed water to the cement hydration reaction as the cement sets. The absorption of water causes the slurry to develop a solid-like structure. In one embodiment, the superabsorbent is polyacrylamide or modified crosslinked poly(meth)acrylate. Also presented is a method of treating lost circulation by pumping the above-mentioned cement system.

    摘要翻译: 用于处理流失循环的水泥系统包括水泥,水和超吸收性聚合物的浆料,其在放置在井中时吸收浆料中的游离水以形成凝胶矿石,优选固体样结构,并且其中 作为水泥套,将吸收的水释放到水泥水化反应中。 水的吸收导致浆料形成固体样结构。 在一个实施方案中,超吸收剂是聚丙烯酰胺或改性的交联聚(甲基)丙烯酸酯。 还提出了通过泵送上述水泥系统来处理流失的方法。

    Compositions and methods for treating lost circulation
    2.
    发明授权
    Compositions and methods for treating lost circulation 有权
    治疗流失的组成和方法

    公开(公告)号:US07726400B2

    公开(公告)日:2010-06-01

    申请号:US10556867

    申请日:2004-05-12

    IPC分类号: E21B33/13

    摘要: A cement system for use in treating lost circulation includes a slurry of cement, water and a super-absorbent polymer which absorbs free water in the slurry to form a gel—ore preferably a solid-like structure—when placed in the well, and which releases the absorbed water to the cement hydration reaction as the cement sets. The absorption of water causes the slurry to develop a solid-like structure. In one embodiment, the superabsorbent is polyacrylamide or modified crosslinked poly(meth)acrylate. Also presented is a method of treating lost circulation by pumping the above-mentioned cement system.

    摘要翻译: 用于处理流失循环的水泥系统包括水泥,水和超吸收性聚合物的浆料,其在放置在井中时吸收浆料中的游离水以形成凝胶矿石,优选固体样结构,并且其中 作为水泥套,将吸收的水释放到水泥水化反应中。 水的吸收导致浆料形成固体样结构。 在一个实施方案中,超吸收剂是聚丙烯酰胺或改性的交联聚(甲基)丙烯酸酯。 还提出了通过泵送上述水泥系统来处理流失的方法。

    Surfactant compositions for well cleaning
    3.
    发明授权
    Surfactant compositions for well cleaning 有权
    用于清洗的表面活性剂组合物

    公开(公告)号:US06686323B2

    公开(公告)日:2004-02-03

    申请号:US10170795

    申请日:2002-06-12

    IPC分类号: C09K300

    摘要: A surfactant composition for use in well treatment, particularly for removing oil-based mud deposits from a well prior to cementing, comprises an alkylpolyglucoside in a solution of a mutual solvent for water and hydrocarbon. The composition can be used to formulate a chemical wash by dissolving the composition at a concentration of about 1%-10% (e.g. 5%) by weight in water or brine.

    摘要翻译: 用于井处理的表面活性剂组合物,特别是用于在固井之前从井中除去油基泥浆沉积物,包括在水和烃的互溶剂溶液中的烷基聚葡糖苷。 该组合物可用于通过将组合物以约1%-10%(例如5%)重量的浓度溶于水或盐水中来配制化学洗涤剂。