发明名称 |
COMPACT JAR FOR DISLODGING TOOLS IN AN OIL OR GAS WELL |
摘要 |
This invention relates to a jar used to dislodge tools stuck in a well. The jar includes two housing portions movable with respect to each other. A release collet forms a portion of one of the housings. A release sleeve is carried by a mandrel and is located within the release collet. After a given amount of movement of the housing with respect to the mandrel, the release mechanism is activated and the two housing sections rapidly move with respect to each other. A hammer portion of the mandrel then strikes an anvil in the anvil housing, thus applying an upward force to the tool lodged in the well. |
申请公布号 |
WO2011044411(A2) |
申请公布日期 |
2011.04.14 |
申请号 |
WO2010US51904 |
申请日期 |
2010.10.08 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC.;EVANS, ROBERT, W. |
发明人 |
EVANS, ROBERT, W. |
分类号 |
E21B31/107 |
主分类号 |
E21B31/107 |
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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