ADDITIVE FOR CONTROLLING CEMENT SLURRY RHEOLOGY
    81.
    发明申请
    ADDITIVE FOR CONTROLLING CEMENT SLURRY RHEOLOGY 失效
    控制水泥泥浆流变学的补充

    公开(公告)号:US20110042086A1

    公开(公告)日:2011-02-24

    申请号:US12740265

    申请日:2008-10-09

    申请人: Bruno Drochon

    发明人: Bruno Drochon

    IPC分类号: E21B33/00 C09K8/44

    摘要: A cement composition for use in a wellbore comprising a cement blend and at least two polyvinylalcohols wherein the polyvinylalcohols have different degrees of hydrolysis such that the rheology of the cement slurry capable of being formed from the composition is stable during temperatures changes.

    摘要翻译: 一种用于井筒中的水泥组合物,包括水泥混合物和至少两种聚乙烯醇,其中聚乙烯醇具有不同程度的水解,使得能够在组合物中形成的水​​泥浆料的流变性在温度变化期间是稳定的。

    Low-density and low-porosity cementing slurry for oil wells or the like
    87.
    发明授权
    Low-density and low-porosity cementing slurry for oil wells or the like 有权
    用于油井等的低密度和低孔隙度固井泥浆

    公开(公告)号:US06626991B1

    公开(公告)日:2003-09-30

    申请号:US10049198

    申请日:2002-07-02

    IPC分类号: C04B3800

    摘要: The invention relates to a cement slurry for cementing an oil well or the like, the slurry having a density lying in the range 0.9 g/cm3 to 1.3 g/cm3, and being constituted by a solid fraction and a liquid fraction, having porosity (volume ratio of liquid fraction over solid fraction) lying in the range 38% to 50%. The solid fraction is constitued by a mixture of lightweight particles, microcement and optionally portland cement and gypsum. Such cements have remarkable mechanical properties due to their very low porosity in spite of having very low density.

    摘要翻译: 本发明涉及一种用于胶合油井等的水泥浆料,该浆料的密度在0.9g / cm 3至1.3g / cm 3的范围内,并且由固体部分和 具有孔隙率在38%至50%范围内的液体部分。 固体部分由轻质颗粒,微孔和任选的波特兰水泥和石膏的混合物构成。 这种水泥由于具有非常低的密度的非常低的孔隙率而具有显着的机械性能。