发明授权
US07273100B2 Biodegradable dispersants for cement compositions and methods of cementing in subterranean formations
失效
用于水泥组合物的生物可降解分散剂和在地下地层中固井的方法
- 专利标题： Biodegradable dispersants for cement compositions and methods of cementing in subterranean formations
- 专利标题（中）： 用于水泥组合物的生物可降解分散剂和在地下地层中固井的方法
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申请号： US10413650申请日： 2003-04-15
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公开(公告)号： US07273100B2公开(公告)日： 2007-09-25
- 发明人: B. Raghava Reddy , Larry S. Eoff
- 申请人： B. Raghava Reddy , Larry S. Eoff
- 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： Baker Botts
- 代理商 Craig W. Roddy
- 主分类号： E21B33/138
- IPC分类号： E21B33/138 ; C04B24/10
摘要：
Methods of cementing in a subterranean formation may include the steps of: providing a cement composition comprising a cement, water, and a dispersant comprising a low molecular weight starch that comprises anionic groups; placing the cement composition in the subterranean formation; and allowing the cement composition to set therein. In certain embodiments, improved biodegradable dispersants may include low molecular weight starches having anionic groups.
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