发明授权
US07842652B2 Cement compositions comprising humic acid grafted fluid loss control additives
有权
包含腐殖酸接枝失水控制添加剂的水泥组合物
- 专利标题: Cement compositions comprising humic acid grafted fluid loss control additives
- 专利标题(中): 包含腐殖酸接枝失水控制添加剂的水泥组合物
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申请号: US12495173申请日: 2009-06-30
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公开(公告)号: US07842652B2公开(公告)日: 2010-11-30
- 发明人: Sam Lewis , Jiten Chatterji , Bobby J. King , D. Chad Brenneis
- 申请人: Sam Lewis , Jiten Chatterji , Bobby J. King , D. Chad Brenneis
- 申请人地址: US OK Duncan
- 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: US OK Duncan
- 代理机构: Tumey LLP
- 代理商 Craig W. Roddy
- 主分类号: C09K8/46
- IPC分类号: C09K8/46 ; C09K8/487
摘要:
Exemplary embodiments of the cement compositions comprise water, a cement, and a fluid loss control additive, the fluid loss control additive comprising a graft copolymer. The graft copolymer comprises a backbone and at least four grafted monomers selected from the group consisting of 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, acrylic acid, vinylphosphonic acid, diallyldimethylammonium chloride, and salts thereof. The backbone of the graft copolymer comprises a humic acid salt. Methods of cementing using exemplary embodiments of the cement compositions are also provided.
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