发明名称 |
INCREASED ENERGY IMPACT TOOL |
摘要 |
A downhole jarring tool includes a mandrel having a small diameter portion and a large diameter portion, a detent cylinder sealingly disposed around the mandrel forming an enclosure, a divider disposed in the enclosure between the mandrel and the detent cylinder, wherein the divider partitions the enclosure into a storage chamber and a metering chamber, and a metering system disposed around the mandrel. A method of applying an impact force using a downhole jarring tool includes moving a mandrel with respect to a detent cylinder by applying an axial force, positioning the mandrel such that a metering system disposed on the mandrel enters a reduced diameter portion of the detent cylinder, transmitting energy to an energy storing component disposed inside the detent cylinder, metering a fluid through the metering system, and accelerating the mandrel with respect to the detent cylinder. |
申请公布号 |
WO2011109373(A3) |
申请公布日期 |
2012.01.19 |
申请号 |
WO2011US26658 |
申请日期 |
2011.03.01 |
申请人 |
SMITH INTERNATIONAL, INC.;SAHETA, VISHAL;LEE, ARLEY, G. |
发明人 |
SAHETA, VISHAL;LEE, ARLEY, G. |
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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