发明授权
US08783379B2 Fluid transfer device usable in managed pressure and dual-gradient drilling
有权
流体输送装置可用于管理压力和双梯度钻孔
- 专利标题： Fluid transfer device usable in managed pressure and dual-gradient drilling
- 专利标题（中）： 流体输送装置可用于管理压力和双梯度钻孔
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申请号： US13281494申请日： 2011-10-26
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公开(公告)号： US08783379B2公开(公告)日： 2014-07-22
- 发明人: Roger Sverre Stave
- 申请人： Roger Sverre Stave
- 代理商 Richard A. Fagin
- 主分类号： E21B7/12
- IPC分类号： E21B7/12
摘要：
A fluid transfer device for use in wellbore drilling includes at least one pressure vessel having a fluid port at a bottom thereof for entry and discharge of a working fluid and a fluid port at a top thereof for entry and discharge of a power fluid. The pressure vessel has no physical barrier between the power fluid and the working fluid. Valves are coupled to the power fluid port for selective introduction of the power fluid into the at least one pressure vessel. Valves are coupled to the working fluid port such that the working fluid is constrained to flow in only one direction.
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