发明授权
- 专利标题: Combination well blowout preventer
- 专利标题(中): 组合良好的防喷器
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申请号: US3589667D申请日: 1969-02-20
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公开(公告)号: US3589667A公开(公告)日: 1971-06-29
- 发明人: LEWIS GEORGE E , MURMAN FERNANDO
- 申请人: HYDRIL CO
- 专利权人: Hydril Co
- 当前专利权人: Hydril Co
- 优先权: US80085069 1969-02-20
- 主分类号: E21B33/06
- IPC分类号: E21B33/06 ; E21B33/064 ; E21B34/00 ; E21B34/02 ; E21B34/04 ; F16K5/06
摘要:
The disclosure concerns unusually advantageous apparatus used in controlling and preventing well blowouts, and utilizing novel plug-valve sealing and operating structure, and further as related to the location and housing of an inwardly constrictable packer annulus.
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