发明名称 |
Fluid flow control apparatus, shifting tool and method for oil and gas wells |
摘要 |
A fluid flow control apparatus, shifting tool and method for oil and gas wells in which a sliding sleeve valve is connected in a string of well tubing in a wellbore casing. The sliding sleeve valve functions to selectively control fluid communication between the well tubing and the wellbore casing. A shifting tool is provided for opening and closing the sliding sleeve valve and is connected to reeled tubing for receiving a fluid. The shifting tool includes a nozzle for discharging the fluid into the well tubing during or after the valve shifting operation.
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申请公布号 |
US5090481(A) |
申请公布日期 |
1992.02.25 |
申请号 |
US19910653547 |
申请日期 |
1991.02.11 |
申请人 |
OTIS ENGINEERING CORPORATION |
发明人 |
PLEASANTS, CHARLES W.;FOWLER, JR., STEWART H. |
分类号 |
E21B31/113;E21B34/12;E21B34/14;E21B37/00 |
主分类号 |
E21B31/113 |
代理机构 |
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代理人 |
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地址 |
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