Pumps – Processes – Of pumping one fluid by contact or entrainment with another
Reexamination Certificate
2005-08-23
2005-08-23
Michalsky, Gerald A. (Department: 3753)
Pumps
Processes
Of pumping one fluid by contact or entrainment with another
C137S155000, C417S112000
Reexamination Certificate
active
06932581
ABSTRACT:
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.
REFERENCES:
patent: 2385316 (1945-09-01), Walton
patent: 2797700 (1957-07-01), McGowen, Jr.
patent: 3124151 (1964-03-01), Lilly
patent: 4592380 (1986-06-01), Hamm
patent: 5707214 (1998-01-01), Schmidt
patent: 5743717 (1998-04-01), Schmidt
patent: 5782261 (1998-07-01), Becker et al.
patent: 5806598 (1998-09-01), Amani
patent: 5896924 (1999-04-01), Carmody et al.
patent: 5937945 (1999-08-01), Bussear et al.
patent: 5971004 (1999-10-01), Pringle
patent: RE36566 (2000-02-01), Pringle
patent: 6070608 (2000-06-01), Pringle
patent: 6176309 (2001-01-01), Bender
patent: 6305402 (2001-10-01), Pringle
patent: 2001/0025651 (2001-10-01), Almeida
patent: 2002/0070369 (2002-06-01), Faustinelli
patent: 2002/0096332 (2002-07-01), De Almeida
patent: 0 745 176 (1998-04-01), None
patent: 440482 (1974-08-01), None
patent: 973798 (1982-11-01), None
patent: WO 02/059485 (2002-08-01), None
Castano Jaime A.
Galloway Bryan P.
Michalsky Gerald A.
Schlumberger Technology Corporation
Trop Pruner & Hu P.C.
LandOfFree
Gas lift valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas lift valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas lift valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3490735