发明名称 |
Well completion tool and process |
摘要 |
An oil well tool including a release mechanism, a splined torque transmitting driver, a liner, an under reamer and a drill bit. Circulation in a passageway through the tool provides drilling foam or fluid to the drill bit and under reamer. A restriction below the under reamer provides pressure to hydraulically force cone arms of the under reamer outwardly. A valve mechanism located within a stinger subassembly within the liner controls communication between the central passageway and the perforated liner. The valve is actuated by placement of a ball following drilling. Gravel packing through the well annulus may then occur following drilling. A second valve may later by actuated to separate the drill pipe from the liner and associated components.
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申请公布号 |
US5425423(A) |
申请公布日期 |
1995.06.20 |
申请号 |
US19940215920 |
申请日期 |
1994.03.22 |
申请人 |
BESTLINE LINER SYSTEMS |
发明人 |
DOBSON, RICHARD M.;HERNDON, JEFFEREY D.;HUDSON, LEO D. |
分类号 |
E21B10/34;E21B23/04;E21B33/14;E21B34/14;E21B43/04;E21B43/08;(IPC1-7):E21B43/04 |
主分类号 |
E21B10/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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