Method of moving a through-the-flowline installed safety valve t

Details Method of moving a through-the-flowline installed safety valve t Method of moving a through-the-flowline installed safety valve t

1976-06-07

1981-03-17

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

166 72, 166153, 166322, 166363, E21B 2308, E21B 3404, E21B 3410, E21B 4312

Patent

active

042561809

ABSTRACT:
A surface-controlled subsurface safety valve apparatus and method of utilizing the safety valve in through-the-flowline serviced wells. Both the valve frame and valve operator are provided with ball and socket universal joints to enable passage of the safety valve past restrictions in the flowline resulting from bends and curves in the flowline by flexing the safety valve in moving to and from the subsurface operating location.

REFERENCES:
patent: 3126058 (1964-03-01), Yetman et al.
patent: 3312283 (1967-04-01), Yetman
patent: 3568770 (1971-03-01), Fredd
patent: 3762471 (1973-10-01), Mott
patent: 3762471 (1971-04-01), Mott
patent: 3764176 (1973-10-01), Soulie
patent: 3874634 (1975-04-01), Gazda
patent: 3899025 (1975-08-01), Dinning
Pumpdown Completion Equipment, Otis Technical Information System, Otis Engineering Corp., OEC5113, May, 1975.

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