发明名称 |
Method and apparatus for installing packers in a well |
摘要 |
Remote control of hydraulically set packers is achieved by incorporating a hydraulic energy accumulator into a well tubing string. A hydraulic line connecting the accumulator with the packers setting mechanism is blocked by a shearable plug connected between the accumulator body and a movable control sleeve. In one embodiment, upward force exerted on the cable of a shifting tool latched into the control sleeve causes the plug to shear and pressure from the accumulator to set the packers. In another, the plug is sheared by movement of the sleeve through contact with a pressure differential sensitive piston that shifts in response to an increase in annular pressure.
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申请公布号 |
US4665992(A) |
申请公布日期 |
1987.05.19 |
申请号 |
US19850693704 |
申请日期 |
1985.01.22 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
FRANC, JEAN |
分类号 |
E21B33/1295;(IPC1-7):E21B23/06 |
主分类号 |
E21B33/1295 |
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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