Oil well drilling and completion equipment, namely, remotely operable locking systems comprised primarily of a metal pipe coupling with remotely operable metal cam locks used to attach and detach well service tools to a wellhead, and also including a remote control apparatus for locking and unlocking the metal cam locks

'also':37 'apparatus':42 'attach':27 'cam':23,49 'complet':5 'compris':12 'control':41 'coupl':18 'detach':29 'drill':3 'equip':6 'includ':38 'lock':10,24,44,50 'metal':16,22,48 'name':7 'oil':1 'oper':9,21 'pipe':17 'primarili':13 'remot':8,20,40 'servic':31 'system':11 'tool':32 'unlock':46 'use':25 'well':2,30 'wellhead':35

RIGLOCK

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