Methods, well cement compositions and lightweight additives therefor
    1.
    发明授权
    Methods, well cement compositions and lightweight additives therefor 有权
    方法,井水泥组合物和轻质添加剂

    公开(公告)号:US06631766B2

    公开(公告)日:2003-10-14

    申请号:US10103449

    申请日:2002-03-21

    IPC分类号: E21B3313

    摘要: The present invention provides methods, lightweight well cement compositions and additives for the well cement compositions. The methods of the invention for sealing pipe in a well bore penetrating a zone or formation which readily fractures at low hydrostatic pressure is basically comprised of the steps of providing a lightweight cement composition comprised of a hydraulic cement, water and an additive comprising an aqueous suspension of microspheres containing a water swellable clay suspending agent, placing the cement composition in the annulus between the pipe and the well bore and allowing the cement composition to set.

    摘要翻译: 本发明提供了用于井水泥组合物的方法,轻质井水泥组合物和添加剂。 本发明的密封管道渗透到在低流体静力压力下容易断裂的区域或地层的本发明的方法基本上包括提供由水硬性水泥,水和包含水悬浮液的添加剂组成的轻质水泥组合物的步骤 的含有水溶胀粘土悬浮剂的微球,将水泥组合物置于管和井眼之间的环空中,并允许水泥组合物固化。

    Methods, well cement compositions and lightweight additives therefor
    4.
    发明授权
    Methods, well cement compositions and lightweight additives therefor 失效
    方法,井水泥组合物和轻质添加剂

    公开(公告)号:US06601647B2

    公开(公告)日:2003-08-05

    申请号:US10005266

    申请日:2001-12-03

    IPC分类号: E21B3313

    摘要: The present invention provides methods, lightweight well cement compositions and additives for the well cement compositions. The methods of the invention for sealing pipe in a well bore penetrating a zone or formation which readily fractures at low hydrostatic pressure is basically comprised of the steps of providing a lightweight cement composition comprised of a hydraulic cement, water and an additive comprising a suspension of microspheres in water gelled with sodium bentonite, placing the cement composition in the annulus between the pipe and the well bore and allowing the cement composition to set.

    摘要翻译: 本发明提供了用于井水泥组合物的方法,轻质井水泥组合物和添加剂。 本发明的密封管道渗透在低流体静力压力下容易断裂的区域或地层中的本发明的方法基本上包括提供由水硬性水泥,水和添加剂组成的轻质水泥组合物的步骤,该水泥组合物包含悬浮液 用钠膨润土胶凝的水中的微球,将水泥组合物置于管和井眼之间的环空中,并允许水泥组合物固化。

    Methods and compositions for cementing wells
    6.
    发明授权
    Methods and compositions for cementing wells 有权
    固井的方法和组成

    公开(公告)号:US07063153B2

    公开(公告)日:2006-06-20

    申请号:US10773632

    申请日:2004-02-06

    IPC分类号: E21B33/13

    摘要: Methods of cementing subterranean zones penetrated by well bores and well cement compositions. A well cement composition of the invention basically comprises a hydraulic cement, water in an amount sufficient to form a pumpable slurry and a fluid loss control polymer additive comprising 77.9 weight % of the calcium salt of 2-acrylamido-2-methyl propane sulfonic acid, 8 weight % of the calcium salt of maleic acid, 11 weight % of N-vinyl caprolactam, 3 weight % of 4-hydroxybutyl vinyl ether and 0.1 weight % of methylene bisacrylamide.

    摘要翻译: 井眼和水泥组合物渗透的地下区域固井方法。 本发明的良好的水泥组合物基本上包括水硬性水泥,足以形成可泵送浆料的水和含有77.9重量%的2-丙烯酰胺基-2-甲基丙磺酸钙盐的流体损失控制聚合物添加剂, 8重量%的马来酸钙盐,11重量%的N-乙烯基己内酰胺,3重量%的4-羟基丁基乙烯基醚和0.1重量%的亚甲基双丙烯酰胺。

    Cementing compositions
    8.
    发明授权
    Cementing compositions 有权
    水泥组合物

    公开(公告)号:US06855201B2

    公开(公告)日:2005-02-15

    申请号:US10714134

    申请日:2003-11-14

    摘要: A cement composition is basically comprised of a hydraulic cement, water in an amount sufficient to form a pumpable slurry and a fluid loss control polymer additive comprised of 69 weight % of the calcium salt of 2-acrylamido-2-methyl propane sulfonic acid, 14 weight % of the calcium salt of maleic acid, 14 weight % of N-vinyl caprolactam and 3 weight % of 4-hydroxybutyl vinyl ether.

    摘要翻译: 水泥组合物基本上由水硬性水泥,足以形成可泵送浆料的水和由69重量%的2-丙烯酰胺基-2-甲基丙磺酸钙盐,14 马来酸钙盐的重量百分比,14重量%的N-乙烯基己内酰胺和3重量%的4-羟基丁基乙烯基醚。

    Well cementing methods and compositions
    10.
    发明授权
    Well cementing methods and compositions 失效
    良好的固井方法和组成

    公开(公告)号:US06715552B2

    公开(公告)日:2004-04-06

    申请号:US10176344

    申请日:2002-06-20

    IPC分类号: E21B3313

    摘要: Methods of cementing subterranean zones penetrated by well bores and well cement compositions are provided. A well cement composition of the invention is basically comprised of a hydraulic cement, water in an amount sufficient to form a pumpable slurry and a fluid loss control polymer additive comprised of 69 weight % of the calcium salt of 2-acrylamido-2-methyl propane sulfonic acid, 14 weight % of the calcium salt of maleic acid, 14 weight % of N-vinyl caprolactam and 3 weight % of 4-hydroxybutyl vinyl ether.

    摘要翻译: 提供了井眼和井眼水泥组合物渗透的地下区域固井方法。 本发明的良好的水泥组合物基本上由水硬性水泥,足以形成可泵送浆料的水和由69重量%的2-丙烯酰胺基-2-甲基丙烷的钙盐组成的流体损失控制聚合物添加剂 磺酸,14重量%的马来酸钙盐,14重量%的N-乙烯基己内酰胺和3重量%的4-羟基丁基乙烯基醚。