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    WELLBORE CEMENTING COMPOSITIONS AND METHODS OF MAKING AND USING SAME
    2.
    发明授权
    WELLBORE CEMENTING COMPOSITIONS AND METHODS OF MAKING AND USING SAME 有权

    公开(公告)号：EP2630214B1

    公开(公告)日：2018-09-19

    申请号：EP11776483.7

    申请日：2011-10-18

    申请人： Halliburton Energy Services, Inc.

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

    IPC分类号： C09K8/467 ,  C09K8/487 ,  C04B24/38 ,  C04B28/02

    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.

    CEMENTING COMPOSITION COMPRISING NONIONIC HYDROPHOBICALLY-MODIFIED CELLULOSE ETHERS AND ITS USE
    10.
    发明公开
    CEMENTING COMPOSITION COMPRISING NONIONIC HYDROPHOBICALLY-MODIFIED CELLULOSE ETHERS AND ITS USE 审中-公开
    ZEMENTIERUNGSZUSAMMENSETZUNG MIT ANIONISCH HYDROPHOB MODIFIZIERTEN CELLULESETHERN UND DEREN VERWENDUNG

    公开(公告)号：EP2931676A1

    公开(公告)日：2015-10-21

    申请号：EP13811332.9

    申请日：2013-12-06

    申请人： Dow Global Technologies LLC

    发明人： KUHLMAN, Roger L. ,  WITHAM, Cole A. ,  POINDEXTER, Michael K. ,  JONES, Raymond M. ,  COMBS, Nathan Kyle ,  WATTERS, Jeffrey T. ,  WATTERS, Larry T.

    IPC分类号： C04B24/38 ,  C04B28/02 ,  C09K8/487

    CPC分类号： C04B24/383 ,  C04B28/02 ,  C09K8/487 ,  E21B33/14 ,  C04B24/22 ,  C04B2103/408 ,  C04B2103/46

    摘要： Disclosed is a composition and a method for cementing a casing in a borehole of a well using an aqueous cementing composition comprising (a) water, (b) a cementing composition comprising (i) a hydraulic cement, (ii) a hydrophobically modified polymer, (iii) a dispersant, and optionally (iv) one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells. Preferably the hydrophobically modified hydroxyethyl cellulose has an ethylene oxide molar substitution of from 0.5 to 3.5, a hydrophobe degree of substitution of from 0.001 to 0.025, and a weight- average molecular weight of from 500,000 to 4,000,000 Daltons and the dispersant is sulfonated polymer, melamine formaldehyde condensate, a naphthalene formaldehyde condensate, a branched or non-branched polycarboxylate polymer. Preferably, the aqueous cementing composition is pumped downwardly into said casing, pumped upwardly into the annulus surrounding said casing until said aqueous composition fills that portion of the annular space desired to be sealed, and then maintaining said aqueous cementing composition in place until the cement sets.

    摘要翻译： 公开了一种用于使用水性胶结剂组合物将井筒固定在井眼中的组合物和方法，所述组合物包含（a）水，（b）粘合剂组合物，其包含（i）水硬性水泥，（ii）疏水改性聚合物， （iii）分散剂，以及任选地（iv）一种或多种其它常规添加到用于在井的钻孔中固井的水泥固井组合物中的其它添加剂。 优选地，疏水改性的羟乙基纤维素的环氧乙烷摩尔取代度为0.5-3.5，疏水取代度为0.001至0.025，重均分子量为500,000至4,000,000道尔顿，分散剂为磺化聚合物，三聚氰胺 甲醛缩合物，萘甲醛缩合物，支链或非支化聚羧酸酯聚合物。 优选地，将水性胶结剂组合物向下泵送到所述壳体中，向上泵入围绕所述壳体的环空中，直到所述水性组合物填充期望密封的环形空间的那部分，然后将所述水性固井组合物保持在适当位置，直到水泥组 。