发明名称 Compensating bails
摘要 A pipe handler for assembling and deploying a string of threaded tubulars into a wellbore includes a pair of compensating bails and an elevator pivotally connected to the compensating bails. Each compensating bail includes: a first bail segment; a second bail segment; and a compensator connecting the respective first and second bail segments. Each compensator includes a load cylinder connected to the respective first bail segment and a linear actuator disposed in the respective load cylinder and operable to retract the respective second bail segment from a hoisting position to a ready position. Each second bail segment is engaged with the respective load cylinder in the hoisting position. The compensating bails are capable of supporting string weight in the hoisting position.
申请公布号 AU2013327473(B2) 申请公布日期 2017.03.02
申请号 AU20130327473 申请日期 2013.10.01
申请人 Weatherford Technology Holdings, LLC 发明人 Pratt, Brittan S.;Heidecke, Karsten
分类号 E21B19/06 主分类号 E21B19/06
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