发明授权
- 专利标题: Method of avoiding a drill string becoming stuck during drilling
- 专利标题(中): 在钻井过程中避免钻探的方法
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申请号: EP86305395.5申请日: 1986-07-14
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公开(公告)号: EP0209343B1公开(公告)日: 1993-06-16
- 发明人: Hempkins, W. Brent , Kinsborough, Roger H. , Lohec, Wesley E. , Nini, Conroy J.
- 申请人: CHEVRON RESEARCH AND TECHNOLOGY COMPANY
- 申请人地址: P.O. Box 7643, 555 Market Street San Francisco, CA 94120 US
- 专利权人: CHEVRON RESEARCH AND TECHNOLOGY COMPANY
- 当前专利权人: CHEVRON RESEARCH AND TECHNOLOGY COMPANY
- 当前专利权人地址: P.O. Box 7643, 555 Market Street San Francisco, CA 94120 US
- 代理机构: Nash, David Allan
- 优先权: US756307 19850715
- 主分类号: E21B44/00
- IPC分类号: E21B44/00 ; E21B31/03 ; E21B21/00
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