发明授权
US6085840A Method for control of liquid loss and gas migration in well cementing
失效
控制井底固井中液体流失和气体迁移的方法
- 专利标题： Method for control of liquid loss and gas migration in well cementing
- 专利标题（中）： 控制井底固井中液体流失和气体迁移的方法
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申请号： US92294申请日： 1998-06-05
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公开(公告)号： US6085840A公开(公告)日： 2000-07-11
- 发明人: Steven B. Laramay , Rebecca G. Udarbe
- 申请人： Steven B. Laramay , Rebecca G. Udarbe
- 申请人地址： TX Mesquite
- 专利权人： Fritz Industries, Inc.
- 当前专利权人： Fritz Industries, Inc.
- 当前专利权人地址： TX Mesquite
- 主分类号： C04B24/16
- IPC分类号： C04B24/16 ; C04B24/24 ; C04B24/26 ; C08F226/06 ; C09K8/46 ; C09K8/487 ; C09K8/493 ; E21B33/138 ; E21B33/14
摘要：
This invention discloses a polymer composition, a cement slurry containing said polymer composition and a method of using the cement slurry to cement a borehole penetrating a subsurface earth formation wherein the polymer composition is made by polymerizing a vinylamide morpholine derivative and at least one branched N-vinylamide derivative in the presence of a humate. The polymer composition operates to reduce fluid loss from the cement slurry to the subsurface formation.
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