发明名称 |
WELLBORE CEMENTING COMPOSITIONS AND METHODS OF MAKING AND USING SAME |
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. |
申请公布号 |
EP2630214(A2) |
申请公布日期 |
2013.08.28 |
申请号 |
EP20110776483 |
申请日期 |
2011.10.18 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
REDDY, B, RAGHAVA;PATIL, RAHUL, CHANDRAKANT;PATIL, SANDIP |
分类号 |
C09K8/467;C04B24/38;C04B28/02;C09K8/487 |
主分类号 |
C09K8/467 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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