发明授权
- 专利标题: Invert drilling fluid
- 专利标题(中): 反转钻井液
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申请号: US291250申请日: 1994-08-16
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公开(公告)号: US5432152A公开(公告)日: 1995-07-11
- 发明人: Raymond B. Dawson , Joel F. Carpenter
- 申请人: Raymond B. Dawson , Joel F. Carpenter
- 申请人地址: VA Richmond
- 专利权人: Albemarle Corporation
- 当前专利权人: Albemarle Corporation
- 当前专利权人地址: VA Richmond
- 主分类号: C09K8/34
- IPC分类号: C09K8/34 ; C09K8/36 ; C09K7/02
摘要:
An environmentally friendly invert drilling fluid comprises a water-in-oil emulsion which includes (a) at least 50 volume percent of a low toxicity base oil, and (b) at least one additive selected from the group consisting of emulsifiers, viscosifiers, weighting agents, oil wetting agents and fluid loss preventing agents, at least about 25 volume percent of the base oil content of the drilling fluid being one or more linear alpha-olefins which have from about 14 to 30 carbon atoms.
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