- 专利标题: Managed pressure cementing
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申请号: EP12192976.4申请日: 2012-11-16
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公开(公告)号: EP2594731B1公开(公告)日: 2019-03-13
- 发明人: Hannegan, Don M. , Pena, Cesar , Pavel, David , Grayson, Michael Brian , Boutalbi, Said , Cooper, Todd Douglas , Dunn, Timothy P. , Zamora Jr., Frank
- 申请人: Weatherford Technology Holdings, LLC
- 申请人地址: 2000, St. James Place Houston, TX 77056 US
- 专利权人: Weatherford Technology Holdings, LLC
- 当前专利权人: Weatherford Technology Holdings, LLC
- 当前专利权人地址: 2000, St. James Place Houston, TX 77056 US
- 代理机构: Talbot-Ponsonby, Daniel Frederick
- 优先权: US201161560500P 20111116
- 主分类号: E21B33/13
- IPC分类号: E21B33/13 ; E21B33/16
公开/授权文献
- EP2594731A3 Managed pressure cementing 公开/授权日:2016-09-21
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