E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 34/06 (2006.01) E21B 43/12 (2006.01) F04F 1/20 (2006.01) F16K 1/32 (2006.01) F16K 41/10 (2006.01)
Patent
CA 2461485
A gas lift valve that is usable with a subterranean well includes a housing, a valve stem and at least one bellows. The housing has a port that is in communication with a first fluid, and the valve stem is responsive to the first fluid to establish a predefined threshold to open the valve. The bellow(s) form a seal between the valve stem and the housing. The bellow(s) are subject to a force that is exerted by the first fluid; and a second fluid contained in the bellow(s) opposes the force that is exerted by the first fluid.
Une soupape de gas-lift utilisable dans un puits souterrain comprend une enveloppe, une tige de soupape et au moins un soufflet. L'enveloppe est munie d'un orifice en communication avec un premier fluide et la tige de soupape réagit à ce premier fluide afin d'établir un seuil prédéfini pour l'ouverture de la soupape. Les soufflets forment un joint entre la tige de soupape et l'enveloppe. Les soufflets sont soumis à la force exercée par le premier fluide; un second fluide contenu dans les soufflets s'oppose à la force exercée par le premier fluide.
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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