Locking mandrel having dogs for latching to a landing nipple and

Details Locking mandrel having dogs for latching to a landing nipple and Locking mandrel having dogs for latching to a landing nipple and

1981-01-06

1983-09-13

Pate, III, William F.

Wells

Valves, closures or changeable restrictors

Fluid operated

166386, E21B 3414

Patent

active

044036574

ABSTRACT:
A valve for landing in a landing nipple which landing nipple includes an actuator for the valve with the valve including radially expansible locking means for locking the valve to the landing nipple and to the actua

REFERENCES:
patent: 3744564 (1973-07-01), Moh
patent: 3763937 (1973-10-01), Dinning
patent: 4044835 (1977-08-01), Moh
patent: 4071088 (1978-01-01), Moh
patent: 4256180 (1981-03-01), Moh
patent: 4294315 (1981-10-01), Yonkers et al.

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