Double walled riser

Wells – Submerged well – Connection or disconnection of submerged members remotely...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

166378, E21B 700

Patent

active

051599821

ABSTRACT:
A double walled riser extends from a platform to a subsea well and is connected, through a suitable connector, to the top of the wellhead housing. The wellhead housing has annulus access passageways therein. The connector has passageways therethrough which communicate at one end with the annulus access passageways in the wellhead housing and at the other end with small diameter annulus access tubes carried between the two walls of the double walled riser. The inner wall of the double walled riser comprises a pressure containing member, and the outer wall comprises a structural support member. The small diameter annulus access tubes disposed in the annulus between the inner and outer walls of the riser communicate at one end with one of the respective passageways through the connector, and extend at the other end to the platform. The riser comprises a plurality of joints having a male connecting end and a female connecting end, and adapted to be connected together end to end in locked, sealed relation to form a single riser string from the wellhead to the platform. The small diameter annulus access tubes disposed in the annulus of each riser joint have at one end a male stab nipple carrying a seal ring, and at their other end of female sealing receptacle. When the riser joints are made up on the rig, the small diameter tubes are stabbed together in sealed relation to form continuous, pressure-conveying tubes communicating selected wellhead annuli to the platform.

REFERENCES:
patent: 3500906 (1970-03-01), Peterson
patent: 4478287 (1984-10-01), Hynes et al.
patent: 4887671 (1989-12-01), Hynes

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Double walled riser does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Double walled riser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double walled riser will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2045121

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.