发明名称 |
DOWNHOLE SUB WITH HYDRAULICALLY ACTUABLE SLEEVE VALVE |
摘要 |
<p>A method for opening a port through the wall of a ported sub including: providing a sub with a port through its tubular side wall; providing a hydraulically actuable valve to cover the port, the valve being actuable to move away from a position covering the port to thereby open the port; increasing pressure within the sub to create a pressure differential across the valve to move the valve toward the low pressure side, while the port remains closed by the valve; thereafter, reducing pressure within the sub to reduce the pressure differential; and driving the valve to move it away from a position covering the port.</p> |
申请公布号 |
WO2009132462(A1) |
申请公布日期 |
2009.11.05 |
申请号 |
WO2009CA00599 |
申请日期 |
2009.04.29 |
申请人 |
PACKERS PLUS ENERGY SERVICES INC.;THEMIG, DANIEL JON;TRAHAN, KEVIN O.;DESRANLEAU, CHRISTOPHER DENIS |
发明人 |
THEMIG, DANIEL JON;TRAHAN, KEVIN O.;DESRANLEAU, CHRISTOPHER DENIS |
分类号 |
E21B34/14;E21B33/126;E21B34/10 |
主分类号 |
E21B34/14 |
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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