Compositions And Methods For Well Cementing
    9.
    发明申请
    Compositions And Methods For Well Cementing 有权
    用于水泥的组合物和方法

    公开(公告)号:US20120006546A1

    公开(公告)日:2012-01-12

    申请号:US13171043

    申请日:2011-06-28

    IPC分类号: E21B33/13

    摘要: A retarder aid increases the applicable temperature range of phosphonate/borate cement-retarder systems to at least 302° C. (575° F.), and 207 MPa (30,000 psi). The retarder aid comprises a terpolymer of styrene sulfonate, maleic anhydride and acrylate of ethylene oxide. Cement slurries containing the retarder and retarder aid may be used for both primary-cementing and remedial-cementing applications.

    摘要翻译: 减速助剂将膦酸盐/硼酸盐水泥缓凝剂体系的适用温度范围增加至至少302°C(575°F)和207 MPa(30,000 psi)。 缓凝剂助剂包括苯乙烯磺酸盐,马来酸酐和环氧乙烷丙烯酸酯的三元共聚物。 含有缓凝剂和缓凝剂助剂的水泥浆料可用于初级固井和补救固井应用。

    Versatile Additives For Well Cementing Applications
    10.
    发明申请
    Versatile Additives For Well Cementing Applications 有权
    多用途水泥固化添加剂

    公开(公告)号:US20080318811A1

    公开(公告)日:2008-12-25

    申请号:US12091515

    申请日:2006-10-23

    IPC分类号: C09K8/42

    摘要: The present invention provides a versatile additive for improving the properties of a cement slurry made with portland cement and to be utilized in well cementing, said versatile additive comprising type of silicates and/or borates that inhibit gelation occurring with the interstitial phase. The additive of the present invention improves significantly the rheology (i.e., strong dispersing effect) and can even overcome severe gelation problems. At temperature above about 88° C. (190° F.) the additive acts as retarder aid, enabling to reduce considerably the concentration of retarder required to achieve a given thickening time.

    摘要翻译: 本发明提供了一种多功能添加剂,用于改善用波特兰水泥制成的水泥浆浆料的性能,并用于水泥固井。所述多功能添加剂包括阻止间隙相发生凝胶化的硅酸盐和/或硼酸盐类型。 本发明的添加剂显着地改善流变性(即强烈的分散效果),甚至可以克服严重的凝胶化问题。 在高于约88°C(190°F)的温度下,添加剂起减阻剂的作用,能够显着降低达到给定增稠时间所需的缓凝剂的浓度。