发明名称 |
SHOCK TOOL FOR DRILLSTRING |
摘要 |
A shock tool for a drill string includes an outer tubular housing having female multi-spiral helical spline grooves disposed on an interior surface of the housing, and an inner tubular mandrel having a portion of an exterior circumferential surface with mating male multi-spiral helical splines. The inner tubular mandrel is telescopically and rotationally received in the outer tubular housing with the male splines received in the female spline grooves of the housing. |
申请公布号 |
WO2015076825(A1) |
申请公布日期 |
2015.05.28 |
申请号 |
WO2013US71461 |
申请日期 |
2013.11.22 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
KHAPARDE, ASHISH PRAFULLA;POYYARA, RAGI LOHIDAKSHAN;MEHTA, KRUNAL KANUBHAI |
分类号 |
E21B4/06;E21B19/18;E21B23/00 |
主分类号 |
E21B4/06 |
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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