发明名称 |
HIGH DIFFERENTIAL SHIFTING TOOL |
摘要 |
Systems and methods for opening and/or closing sliding sleeve valves while preventing significant stress upon and damage to the fluid seals that are disposed between the outer housing and the sleeve member elements of the valve. A shifting tool carries a latching device and a fluid closure portion with sacrificial seals. In operation, the shifting tool is secured to the sleeve member with the latching device as the closure portion seals off across the fluid flow port of the sleeve member. The shifting tool is then moved to slide the sleeve member between open and closed positions.
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申请公布号 |
WO2009073357(A4) |
申请公布日期 |
2009.11.19 |
申请号 |
WO2008US83902 |
申请日期 |
2008.11.18 |
申请人 |
BAKER HUGHES INCORPORATED;GOMEZ, ALFREDO |
发明人 |
GOMEZ, ALFREDO |
分类号 |
E21B34/14;E21B23/06;E21B33/127 |
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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