Subsurface well apparatus having improved operator means and met

Details Subsurface well apparatus having improved operator means and met Subsurface well apparatus having improved operator means and met

Filed on

1976-06-23

Date issued

1977-08-30

Examiner

Leppink, James A.

Patent Class

Wells

SubClass

Valves, closures or changeable restrictors

SubSubClass

Fluid operated

Other Related Categories

137629, 251 58, E21B 4312

Type

Patent

Status

active

Patent number

040448355

Description

ABSTRACT:
A surface-controlled wire-line retrieval subsurface safety valve apparatus and method of utilizing the safety valve having a rotatable ball closure element and a movable operator mechanism that controls the operating stroke when the valve is operably installed as well as moving the ball and seat into sealing engagement.

REFERENCES:
patent: 3741249 (1973-06-01), Leutwyler
patent: 3744564 (1973-07-01), Mott
patent: 3762471 (1973-10-01), Mott
patent: 3763933 (1973-10-01), Mott
patent: 3856083 (1974-12-01), Mott
patent: 3858650 (1975-01-01), Mott

Affiliated with

Also associated with

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