Wells – Submerged well – Connection or disconnection of submerged members remotely...
Patent
1997-11-07
2000-06-06
Suchfield, George
Wells
Submerged well
Connection or disconnection of submerged members remotely...
1662421, 1662423, 166359, 166363, 166365, 2851241, 285332, E21B 1706, E21B 33038
Patent
active
060706686
ABSTRACT:
A spanner joint assembly for connecting between an upper riser and a conventional dual bore tubing hanger in a subsea well. The spanner joint assembly includes upper and lower spanner joint portions connected to each other through an emergency disconnect portion. The upper spanner joint portion has a longitudinal production bore and a longitudinal annulus. The lower spanner joint portion has a longitudinal production bore with a production bore valve and a longitudinal nonconcentric annulus access bore. The emergency disconnect portion includes an upper mandrel connected to the upper spanner joint portion and a lower mandrel connected to the lower spanner joint portion. A releasable mechanical connector includes a retaining groove in the lower mandrel and a collet connected to the upper mandrel. The collet has a latching portion extending beyond the upper mandrel which is adapted to be received in the retaining groove. An actuator sleeve extends around the collet and has a locked position and an unlocked position. The actuator sleeve maintains the collet latching portion in the retaining groove in the locked position and allows the collet latching portion to slide out of the retaining groove in the unlocked position. The production bore valve requires hydraulic pressure to hold it open and the production bore valve fails safe closed when hydraulic pressure is relieved.
REFERENCES:
patent: Re27464 (1972-08-01), Taylor, Jr.
patent: 3288493 (1966-11-01), Brown
patent: 3461958 (1969-08-01), Brown
patent: 3741294 (1973-06-01), Merill
patent: 4116272 (1978-09-01), Barrington
patent: 4183404 (1980-01-01), James et al.
patent: 4611662 (1986-09-01), Harrington
patent: 4706744 (1987-11-01), Smith et al.
patent: 5377762 (1995-01-01), Turner
patent: 5657823 (1997-08-01), Kogure et al.
patent: 5732773 (1998-03-01), Parks et al.
patent: 5873415 (1999-02-01), Edwards
Sonsub Inc. Packoff/Spanner Assembly Drawing, 1995, 2 pages.
Currier Reginald L.
Going, III Walter S.
Parks Williams C.
Spiering Michael W.
Sonsub Inc.
Suchfield George
LandOfFree
Blowout preventer spanner joint with emergency disconnect capabi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blowout preventer spanner joint with emergency disconnect capabi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blowout preventer spanner joint with emergency disconnect capabi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2206151