发明公开
EP2582645A1 A FLUID LOSS ADDITIVE CONTAINING A BIODEGRADABLE GRAFTED COPOLYMER FOR A CEMENT COMPOSITION
审中-公开
流体损失与生物可降解移植物黏结剂组合物附加
- 专利标题: A FLUID LOSS ADDITIVE CONTAINING A BIODEGRADABLE GRAFTED COPOLYMER FOR A CEMENT COMPOSITION
- 专利标题(中): 流体损失与生物可降解移植物黏结剂组合物附加
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申请号: EP11728030.5申请日: 2011-06-17
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公开(公告)号: EP2582645A1公开(公告)日: 2013-04-24
- 发明人: SARAP, Girish, Dinkar , TARAFDAR, Abhijit , AK, Remitha
- 申请人: Halliburton Energy Services, Inc.
- 申请人地址: P.O. Box 1431 Duncan, OK 73536 US
- 专利权人: Halliburton Energy Services, Inc.
- 当前专利权人: Halliburton Energy Services, Inc.
- 当前专利权人地址: P.O. Box 1431 Duncan, OK 73536 US
- 代理机构: Ono, Shusuke
- 优先权: US817415 20100617
- 国际公布: WO2011158003 20111222
- 主分类号: C04B28/02
- IPC分类号: C04B28/02 ; C09K8/487
摘要:
According to an embodiment, a fluid loss additive comprises a biodegradable grafted copolymer, wherein the copolymer comprises: (i) a first polymer comprising a monomer or monomers selected from the group consisting of acrylamido-2-methylpropane sulfonic acid, N-N dimethyl acrylamide, N-vinyl-N- methylaceamide, N-vinylformamide, N-vinylpyrrolidone, acrylonitrile, acrylamide, acrylomorpholine, vinyl alcohol, maleic anhydride, acrylic acid, and any combination thereof; and (ii) a second polymer, wherein the first polymer is grafted onto the second polymer. According to another embodiment, a method of cementing in a low-temperature subterranean formation comprises: introducing a cement composition into the subterranean formation comprising: (i) cement; (ii) water; and (iii) the fluid loss additive; and allowing the cement composition to set. According to another embodiment, a method of cementing in a high-temperature subterranean formation comprises: introducing a cement composition into the subterranean formation comprising: (i) cement; (ii) water; (iii) a clay; and (iv) the fluid loss additive; and allowing the cement composition to set.
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