发明授权
- 专利标题: Drill pipe bridge plug
- 专利标题(中): 钻管桥塞
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申请号: US533307申请日: 1990-06-04
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公开(公告)号: US5029643A公开(公告)日: 1991-07-09
- 发明人: Donald W. Winslow , David P. Brisco
- 申请人: Donald W. Winslow , David P. Brisco
- 申请人地址: OK Duncan
- 专利权人: Halliburton Company
- 当前专利权人: Halliburton Company
- 当前专利权人地址: OK Duncan
- 主分类号: E21B21/08
- IPC分类号: E21B21/08 ; E21B21/10 ; E21B23/02 ; E21B23/06 ; E21B33/129 ; E21B33/134 ; E21B34/12
摘要:
A retrievable bridge plug apparatus, and associated methods, are provided for sealing the bore of a drill pipe string to control a well that is flowing out of control.
公开/授权文献
- US5591221A Therapeutic footwear method 公开/授权日:1997-01-07
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