Subsurface safety valve of minimized length

Details Subsurface safety valve of minimized length Subsurface safety valve of minimized length

E - Fixed Constructions

21

B

E21B 34/10 (2006.01) E21B 34/00 (2006.01)

Patent

CA 2203241

A subsurface safety valve 10 of minimized length comprises a tubular valve housing 12 with a valve closure member 18 therein movable between an open and a closed position, an axially shiftable flow tube 24 for opening the valve closure member 18, a plurality of longitudinally disposed springs 38 radially spaced about the housing 12 for biasing the flow tube 24 to a closed position, and a piston and cylinder assembly 26 to move the flow tube 24 to an open position, with a portion of the assembly 26 longitudinally overlapping at least one of the springs 38. The safety valve includes simple mechanisms to lock out the safety valve, and to establish secondary hydraulic communication with a wireline set secondary valve set within the locked out safety valve.

Vanne de sûreté (10) de longueur minimale utilisable en sous-sol, comportant un carter tubulaire (12) contenant un organe obturateur (18) apte à se déplacer entre une position ouverte et une position fermée, un tube d'écoulement (24) apte à se déplacer dans le sens axial et destiné à ouvrir l'organe obturateur (18), plusieurs ressorts longitudinaux (38) répartis dans le sens radial autour du carter (12) et destinés à solliciter le tube d'écoulement (24) vers une position fermée, et un ensemble à piston et cylindre (26) servant à mettre le tube d'écoulement (24) en position ouverte, une partie de cet ensemble (26) étant en chevauchement longitudinal avec au moins un desdits ressorts (38). Cette vanne de sûreté comprend des mécanismes simples servant à bloquer en position ouverte le clapet de la vanne de sûreté et à établir une communication hydraulique secondaire avec une vanne secondaire mise en place à l'aide du câble de forage à l'intérieur de la vanne de sûreté à clapet bloqué.

Affiliated with

Also associated with

Rating

Subsurface safety valve of minimized length does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Subsurface safety valve of minimized length, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subsurface safety valve of minimized length will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2043550