发明名称 |
Use of methylhydroxyethyl cellulose as cement additive |
摘要 |
Methylhydroxyethyl cellulose may be used as an additive in cement slurries in the treatment of wells to prevent or reduce the occurrence of gas channeling. In addition to acting as a gas control additive, methylhydroxyethyl cellulose controls fluid loss, minimizes free fluid and stabilizes foam during cementing of the well. |
申请公布号 |
US8689870(B2) |
申请公布日期 |
2014.04.08 |
申请号 |
US201113090111 |
申请日期 |
2011.04.19 |
申请人 |
BRAY WINDAL SCOTT;BRANDL ANDREAS;BAKER HUGHES INCORPORATED |
发明人 |
BRAY WINDAL SCOTT;BRANDL ANDREAS |
分类号 |
E21B33/13;C04B16/02;C09K8/467;E21B33/14 |
主分类号 |
E21B33/13 |
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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