Gas lift valve

Details Gas lift valve Gas lift valve

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 2700642

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.

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