发明名称 |
Time-Controlled Release Device for Wireline Conveyed Tools |
摘要 |
This invention relates to a time controlled release device for down line tools in oil or gas wells. Tools that are lowered into a well for various purposes occasionally become stuck in the well and are not able to be withdrawn using jars and other dislodging techniques. In such a situation it is desirable to provide a controlled release device that will disengage the tool from the line only after a given time period. This allows the operator to continue to exert upward force on the line for a given time period prior to the release device being actuated.
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申请公布号 |
US2010319930(A1) |
申请公布日期 |
2010.12.23 |
申请号 |
US20090490068 |
申请日期 |
2009.06.23 |
申请人 |
EVANS ROBERT W |
发明人 |
EVANS ROBERT W. |
分类号 |
E21B17/02;E21B17/06;E21B23/00;E21B41/00;F16B1/00 |
主分类号 |
E21B17/02 |
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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