Tubing drain valve

Details Tubing drain valve Tubing drain valve

1984-06-08

1987-02-24

Leppink, James A.

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

166323, 166332, 166386, 251 14, 251114, E21B 3410, E21B 3414

Patent

active

046450076

ABSTRACT:
The present invention discloses a tubing drain valve suitable for use in a borehole and a method for operating the disclosed valve. This device is particularly useful in a production pipe string where it provides a convenient apparatus and method for draining production fluid from the string in order to facilitate a variety of activities. More particularly, the present invention relates to a tubing drain valve actuated to its open position by a force developed across the working surfaces of a movable piston by the pressure in the interior of the production string and actuated to its closed position by a mechanical device. Preferably, the tubing drain valve of the present invention further comprises structure to bias the valve to its closed position and structure to bias the valve in its open position. The valve of the present invention is actuated by overcoming the appropriate biassing forces.

REFERENCES:
patent: 3794112 (1974-02-01), Hill
patent: 3973586 (1976-08-01), Hill et al.
patent: 4257484 (1981-03-01), Whitley et al.
patent: 4331315 (1982-05-01), Geisow
patent: 4429747 (1984-02-01), Williamson, Jr.
patent: 4452310 (1984-06-01), Pringle et al.

Affiliated with

Also associated with

Rating

Tubing drain 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 Tubing drain valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tubing drain valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-103568