Wellhead connecting apparatus

Details Wellhead connecting apparatus Wellhead connecting apparatus

1986-03-26

1987-08-25

Novosad, Stephen J.

Wells

Above ground apparatus

Cap or head pivotably attached to tube or casing

166341, 166368, 285402, 285920, E21B 3303

Patent

active

046886338

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.

REFERENCES:
patent: 2317404 (1943-04-01), Rearwin
patent: 3220245 (1965-11-01), Van Winkle
patent: 4209891 (1980-07-01), Lamb et al.
patent: 4361353 (1982-11-01), Vinson
patent: 4460156 (1984-07-01), Hazelrigg et al.

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