Fail-safe safety cut-off valve for a fluid well

Details Fail-safe safety cut-off valve for a fluid well Fail-safe safety cut-off valve for a fluid well

1975-09-24

1977-01-11

Rosenthal, Arnold

Wells

With electrical means

251139, 166316, 137498, 137521, E21B 4300, F16K 3106, F16K 1734

Patent

active

040022021

ABSTRACT:
A fail-safe sub-surface safety cut-off valve for fluid wells controllable from the surface and suitable for installation at substantially greater depths than prior constructions. The valve assembly is installable and retrievable via wire line technique and utilizes an electromagnetic means to operate either a flapper or a ball cut-off valve. The operating solenoid coil embraces a landing nipple portion of the tubing string and is outside the production flow. This solenoid supplies the power to open either type of cut-off valve and holds the latter open only so long as the solenoid is energized thereby providing surface control of the safety cut-off valve normally and assurance of closing of this valve in the event of power failure through accident or some catastrophe as well as automatic closure if flow velocity increases beyond a predetermined safe value.

REFERENCES:
patent: 3032111 (1962-05-01), Corley, Jr. et al.
patent: 3321177 (1967-05-01), Fendel et al.
patent: 3750700 (1973-08-01), Ecuer
patent: 3833015 (1974-09-01), Kneuer

Affiliated with

Also associated with

Rating

Fail-safe safety cut-off valve for a fluid well does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fail-safe safety cut-off valve for a fluid well, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fail-safe safety cut-off valve for a fluid well will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1739186