Retractable stinger purge valve

Details Retractable stinger purge valve Retractable stinger purge valve

E - Fixed Constructions

21

B

166/46.1

E21B 34/04 (2006.01)

Patent

CA 1197773

ABSTRACT OF THE DISCLOSURE A subsea well assembly has features that allow a riser string leading to the surface to be purged of well fluids prior to pulling the riser string. The well assembly includes a riser connector that seats on a Christmas tree. The Christmas tree and connector have coaxial bores, the ends of which are separated from each by a chamber. A stinger interconnects the bores and extends through the chamber. The stinger has upper and lower pressure shoulders. Hydraulic fluid pressure applied to the lower shoulder causes the stinger to retract from the Christmas tree bore. This allows communication of the connector bore with an annulus passage also located in the connector bore. Fluid can then be pumped down the annulus passage to flow through the chamber and return up the connector bore, purging the riser of well fluid.

448972

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1258457