发明授权
- 专利标题: Apparatus for use in drilling a well at an offshore location
- 专利标题(中): 用于在海上钻井的井的装置
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申请号: US400075申请日: 1989-08-30
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公开(公告)号: US4987956A公开(公告)日: 1991-01-29
- 发明人: Asger Hansen , Martin J. Kelly, Jr.
- 申请人: Asger Hansen , Martin J. Kelly, Jr.
- 专利权人: Asger Hansen,Kelly Jr Martin J
- 当前专利权人: Asger Hansen,Kelly Jr Martin J
- 主分类号: E21B29/08
- IPC分类号: E21B29/08 ; E21B29/12 ; E21B33/038
摘要:
Apparatus is disclosed for use in drilling an offshore well wherein a drill string suspended from a drill ship for extension within a riser pipe, lower marine riser package and subsea wellhead including a blowout preventer stack may be sheared at a location intermediate the lower end of the riser pipe and a flex or ball joint of the riser package.
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