Set retarded cement compositions, additives and methods
    53.
    发明授权
    Set retarded cement compositions, additives and methods 失效
    设定阻滞水泥组合物,添加剂和方法

    公开(公告)号:US5536311A

    公开(公告)日:1996-07-16

    申请号:US510293

    申请日:1995-08-02

    Abstract: The present invention provides set retarding additives, set retarded hydraulic cement compositions including such additives and methods of using the cement compositions for cementing zones in wells. The set retarding additives are copolymers or terpolymers containing monomer units formed from one of maleic acid, itaconic acid, fumaric acid, citraconic acid and mesaconic acid along with other monomer units.

    Abstract translation: 本发明提供了凝结阻滞添加剂,包含这些添加剂的凝固阻滞水硬性水泥组合物和使用该水泥组合物在井中固井的方法。 凝固阻滞添加剂是含有由马来酸,衣康酸,富马酸,柠康酸和中康酸之一以及其它单体单元形成的单体单元的共聚物或三元共聚物。

    Water control
    54.
    发明授权
    Water control 失效
    水控制

    公开(公告)号:US5335726A

    公开(公告)日:1994-08-09

    申请号:US141302

    申请日:1993-10-22

    CPC classification number: C08K5/23 C08K5/315 C09K8/512

    Abstract: A method of forming a gel in a subsurface formation is provided whereby a monomer is polymerized in the formation in the presence of a crosslinker by an initiator selected from azo compounds which are temperature activated over a range of temperatures. The method is particularly useful to substantially terminate or at least decrease the flow of water from a subterranean formation into a wellbore penetrating the formation.

    Abstract translation: 提供了一种在地下地层中形成凝胶的方法,其中单体在交联剂存在下通过选自在一定温度范围内进行温度活化的偶氮化合物的引发剂在地层中聚合。 该方法特别有用于基本上终止或至少减少从地层到进入地层的井眼的水流。

Patent Agency Ranking