E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/47
E21B 33/03 (2006.01) E21B 33/035 (2006.01) E21B 33/038 (2006.01)
Patent
CA 1252384
ABSTRACT A coupling assembly for detachably connecting a pair of wellhead members, includes couplable first and second coupling members. Each coupling member has a central axial bore for accommodating a drill string, and each coupling member is adapted for axially aligned connection to a wellhead member. The first coupling member is axially rotatable relative to the second coupling member, into locking engagement therewith. The coupling also includes sealing means disposed between the coupling members, and means for rotating the first member relative to the second member.
478521
Barkley Stephen H.
Moffat & Co.
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