发明名称 System and method for deflection compensation in power drive system for connection of tubulars
摘要 The present invention generally provides methods and apparatus for connecting threaded members while ensuring that a proper connection is made, particularly for premium grade connections. In one embodiment, a method of connecting threaded tubular members for use in a wellbore or a riser system is provided. The method includes the acts of operating a power drive unit, thereby rotating a first threaded tubular member relative to a second threaded tubular member; measuring the rotation of the first threaded tubular member; and compensating the rotation measurement by subtracting a deflection of at least one of: the power drive unit, and one of the tubular members.
申请公布号 US7568522(B2) 申请公布日期 2009.08.04
申请号 US20060608143 申请日期 2006.12.07
申请人 WEATHERFORD/LAMB, INC. 发明人 BOUTWELL DOYLE;NEWMAN JOHN;RUARK GRAHAM;DAUPHINE AARON
分类号 E21B19/16;E21B47/00 主分类号 E21B19/16
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