E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/16 (2006.01) E21B 19/18 (2006.01)
Patent
CA 2718014
A method and apparatus for facilitating connecting or disconnecting a first member to a second member, such as drill pipe used in the construction of an oilwell, the apparatus comprising a frame (110) and first and second engaging assemblies (120,140), each having three movable die carriers (127a,b,c) and powered movement apparatus for moving the die carriers (127a,b,c) simultaneously and in synchronisation.
Fox Preston R.
West Neil Edward
Mcfadden Fincham
National Oilwell Varco L.p.
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