发明授权
EP1387924B1 APPARATUS AND METHODS FOR TUBULAR MAKEUP INTERLOCK 有权
设备和方法得到交安全攻击管研究

APPARATUS AND METHODS FOR TUBULAR MAKEUP INTERLOCK
摘要:
The present invention provides for an apparatus and methods to prevent an operator from inadvertently dropping a string (210) into a wellbore (180) during assembling and disassembling of tubulars. Additionally, the apparatus and methods can be used to for running in casing, running in wellbore components or for a drill string.
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