发明名称 MECHANICAL SET ANCHOR WITH SLIPS POCKET
摘要 A mechanical set anchor wherein a plunger extending from a base end of an anchor body activates a pin type trigger which releases a spring utilized to set multipl e slips extending from the body of the anchor. Continued downward compressive forces fully sets the sli ps into the borehole pipe casing. The slips are maintained in their fully set position by a locki ng nut. Means are additionally provided to further set the slips into the pipe casing after slips are released from the anchor body. The anchor is mechanically released by an upward pull under tension of sufficient strength to shear release pins that release the compressed spring fully retracting the slips within the anchor body so that the anchor may be tripped from the borehole without interference from the previously engaged slips.
申请公布号 CA2196382(C) 申请公布日期 2005.09.06
申请号 CA19972196382 申请日期 1997.01.30
申请人 SMITH INTERNATIONAL, INC. 发明人 HEBERT, JOSEPH V.;CAMPBELL, JOHN E.;BAILEY, THOMAS F.
分类号 E21B7/06;E21B7/08;E21B23/01;(IPC1-7):E21B23/00 主分类号 E21B7/06
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