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
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