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    Wellbore cementing compositions and methods of making and using same
    4.
    发明申请
    Wellbore cementing compositions and methods of making and using same 失效
    井筒固井组合物及其制备和使用方法

    公开(公告)号：US20120090841A1

    公开(公告)日：2012-04-19

    申请号：US12907209

    申请日：2010-10-19

    申请人： B. Raghava REDDY ,  Rahul Chandrakant PATIL ,  Sandip PATIL

    发明人： B. Raghava REDDY ,  Rahul Chandrakant PATIL ,  Sandip PATIL

    IPC分类号： E21B33/13 ,  C04B16/02

    CPC分类号： C09K8/467 ,  C04B24/38 ,  C04B24/383 ,  C04B28/02 ,  C09K8/487 ,  C04B20/023 ,  C04B20/04

    摘要： A method of cementing a wellbore comprising preparing a wellbore cementing composition comprising a cementitious materials and a modified biopolymer additive wherein the modified biopolymer additive is the reaction product of a process comprising contacting a biopolymer and an organic carbonate to form a reaction mixture and subjecting the reaction mixture to a temperature of from about 100° F. to about 250° F. and placing the wellbore cementing fluid in the wellbore. A method of cementing a wellbore comprising contacting a modified biopolymer additive with a cementitious slurry to produce a wellbore cementing composition having an initial viscosity, v0; placing the wellbore cementing composition to a desired depth in a subterranean formation wherein the wellbore cementing composition has a transitional viscosity, vt, during placement in the subterranean formation and a final viscosity, vf, at the desired depth wherein vf≧vt>v0; and allowing the wellbore cementing composition to set.

    摘要翻译： 一种固井井的方法，包括制备包含水泥质材料和改性生物聚合物添加剂的井眼胶结组合物，其中改性生物聚合物添加剂是包括使生物聚合物和有机碳酸酯接触以形成反应混合物并使反应 混合物至约100°F至约250°F的温度，并将井眼固井液置于井筒中。 一种固井井的方法，包括使改性的生物聚合物添加剂与水泥浆料接触以产生具有初始粘度v0的井眼胶结组合物; 将井眼胶结剂组合物放置在地下地层中所需的深度，其中井眼胶结剂组合物在放置在地层中时具有过渡粘度vt，并且在期望深度处具有最终粘度vf，其中vf≥vt> v0; 并允许井筒固井组合物固化。