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    COMPENSATING BAILS
    4.
    发明公开
    COMPENSATING BAILS 审中-公开

    公开(公告)号：EP3693533A1

    公开(公告)日：2020-08-12

    申请号：EP20168008.9

    申请日：2013-10-01

    申请人： Weatherford Technology Holdings, LLC

    发明人： PRATT, Brittan S. ,  HEIDECKE, Karsten

    IPC分类号： E21B19/06 ,  E21B19/16

    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.