Well tool having a variable area hydraulic actuator

Details Well tool having a variable area hydraulic actuator Well tool having a variable area hydraulic actuator

1990-04-09

1991-01-22

Kisliuk, Bruce M.

Wells

Valves, closures or changeable restrictors

Fluid operated

166321, 166332, 251 62, 92 6R, E21B 3410

Patent

active

049863576

ABSTRACT:
A subsurface well tool having a hydraulic piston and cylinder assembly actuator which is adapted to be connected to and controlled by a hydraulic control line extending to the well surface. The assembly has a cross-sectional area exposed to the hydraulic control fluid which increases in one direction of movement of the assembly and decreases in the opposite direction for reducing surface operating pressure problems. Preferably, one of the piston and cylinder includes a tapered surface, and includes a flexible seal between the piston and cylinder.

REFERENCES:
patent: 2710077 (1955-06-01), Fabel et al.
patent: 3254837 (1966-06-01), Falconer
patent: 4048905 (1977-09-01), Souslin
patent: 4080871 (1978-03-01), Katz et al.
patent: 4161219 (1979-07-01), Pringle
patent: 4252197 (1981-02-01), Pringle
patent: 4621695 (1986-11-01), Pringle
patent: 4676307 (1987-06-01), Pringle

Affiliated with

Also associated with

Rating

Well tool having a variable area hydraulic actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Well tool having a variable area hydraulic actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well tool having a variable area hydraulic actuator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1549354