Fluid connector with check valve and method of running a string

Details Fluid connector with check valve and method of running a string Fluid connector with check valve and method of running a string

1995-11-20

1999-02-02

Bagnell, David J.

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

166 881, 166 884, 2851372, E21B 3410

Patent

active

058652507

ABSTRACT:
A tubular wellhead member has an inner seal surface. A hydraulic passage extends through the wellhead member and terminates at a port at the seal surface. A tubing hanger having an outer mating surface lands in the wellhead member. A hydraulic line extends from a hydraulically operated downhole safety valve to a passage in the tubing hanger and terminates at a tubing hanger port. A seal is located at the tubing hanger port for sealing the junction with the tubular member port. A check valve is located within the seal to maintain the tubing hanger fluid passage closed until the tubing hanger lands in the wellhead. An adapter is employed to apply a running-in hydraulic fluid pressure to the tubing hanger hydraulic fluid passage with the check valve open. Then, the adapter closes the check valve to trap hydraulic fluid pressure in the line leading to the downhole safety valve. This pressure is sufficient to maintain the downhole safety valve in an open position during running in.

REFERENCES:
patent: 4219223 (1980-08-01), Schulte
patent: 4616857 (1986-10-01), Woodman et al.
patent: 4623020 (1986-11-01), Nichols
patent: 4796922 (1989-01-01), Prichard
patent: 5465794 (1995-11-01), McConaughy et al.
patent: 5555935 (1996-09-01), Brammer et al.

Affiliated with

Also associated with

Rating

Fluid connector with check valve and method of running a string does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid connector with check valve and method of running a string , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid connector with check valve and method of running a string will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1108978