发明名称 WELLBORE RECOVERY OPERATION
摘要 The present invention relates to methods and equipment for recovering use of a wellbore in circumstances where the well bore has become blocked by downhole equipment. The invention provides a method comprising the steps of separatin g, at a release joint, a portion of equipment from a jammed portion (6) of equipment; running the separated portion of equipment uphole out of the wellbore (100); running a deflector assembly (60) downhole into the wellbore (100); and deflecting a milling tool (64) from the wellbore into surrounding formation. The method is characterised by restricting relative movement between the deflector assembly (60) and the wellbore (100) by engaging, prio r to deflecting the milling tool (64), the deflector assembly (60) with said jammed portion (6) of equipment.
申请公布号 CA2460688(A1) 申请公布日期 2003.04.17
申请号 CA20022460688 申请日期 2002.10.01
申请人 SMITH INTERNATIONAL, INC. 发明人 CRUICKSHANK, BRIAN;MCGARIAN, BRUCE;GILLIES, IAN ALEXANDER
分类号 E21B7/06;E21B31/00;(IPC1-7):E21B31/00 主分类号 E21B7/06
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