Subsurface well safety valve

Details Subsurface well safety valve Subsurface well safety valve

1983-07-18

1985-03-12

Leppink, James A.

Wells

Valves, closures or changeable restrictors

Fluid operated

166321, 166332, E21B 3410

Patent

active

045039135

ABSTRACT:
A subsurface control fluid pressure actuated well safety valve employs one or more spindles attached to the valve housing and spindle sleeves attached to a shiftable actuating flow tube. The spindles and spindle sleeves are positioned between the valve housing and the flow tube and a change in the pressure force acting on the spindle and on the spindle sleeve will result in relative movement of the spindle sleeve with respect to the spindle to cause the flow tube actuator to shift and open a fluid transmission conduit.

REFERENCES:
patent: 2598203 (1952-05-01), Acker, Jr.
patent: 2780290 (1957-02-01), Natho
patent: 3065949 (1962-11-01), De Frees
patent: 4005751 (1977-02-01), Page, Jr.
patent: 4049052 (1977-09-01), Arendt
patent: 4119146 (1978-10-01), Taylor
patent: 4161219 (1979-07-01), Pringle
patent: 4215748 (1980-08-01), Pace et al.
patent: 4252197 (1981-02-01), Pringle
patent: 4273194 (1981-06-01), Pringle et al.
patent: 4335733 (1982-06-01), Richards

Affiliated with

Also associated with

Rating

Subsurface well safety valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Subsurface well safety valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subsurface well safety valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-703142