Method and apparatus for connecting a riser pipe to blow out pre

Details Method and apparatus for connecting a riser pipe to blow out pre Method and apparatus for connecting a riser pipe to blow out pre

1976-11-03

1977-12-13

Leppink, James A.

Wells

With below and above ground modification

Eduction pump or plunger in well

E21B 712

Patent

active

040624021

ABSTRACT:
Method for externally connecting a riser pipe, at great depths beneath a body of water, to the B.O.P Stack of a well, said riser pipe and B.O.P Stack carrying registering eccentric tubes.
In this process the riser pipe is centered on the B.O.P Stack by resting a bearing surface on the outside of the bottom of the riser pipe on a bearing surface on the outside of the top of the B.O.P. Stack, bringing the eccentric tubes into registration by rotating the riser pipe relative to the B.O.P. Stack and mechanically connecting, seating and locking the riser pipe to the B.O.P Stack, while separating the bearing surface on the bottom of the riser pipe from the bearing surface on the top of the B.O.P Stack and, finally, connecting the eccentric tubes. SP

REFERENCES:
patent: 3500906 (1970-03-01), Petersen
patent: 3517738 (1970-06-01), Petersen
patent: 3675713 (1972-07-01), Watkins
patent: 3688840 (1972-09-01), Carington et al.
patent: 3899894 (1975-08-01), Liautaud
patent: 3954137 (1976-05-01), Baugh

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