Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2006-07-24
2010-10-19
Thompson, Kenneth (Department: 3672)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S325000, C166S386000, C166S321000, C166S334400
Reexamination Certificate
active
07814982
ABSTRACT:
Disclosed herein is a device that relates to a non-return valve. The valve comprising, a valve seat, a valve piston in operable communication with the valve seat. The valve further comprising, a first seal disposed at the piston to interact with the valve seat, and a second seal positioned at the piston to interact with the valve seat temporally after the first seal.
REFERENCES:
patent: 2358228 (1944-09-01), Hoof
patent: 2781774 (1957-02-01), Baker et. al.
patent: 3054422 (1962-09-01), Napolitano
patent: 3086593 (1963-04-01), Chitwood
patent: 3311127 (1967-03-01), Dudley
patent: 3604451 (1971-09-01), Delamater
patent: 3776250 (1973-12-01), Knox
patent: 3814181 (1974-06-01), Young
patent: 4121619 (1978-10-01), Pauliukonis
patent: 4360064 (1982-11-01), O'Connor et al.
patent: 4473231 (1984-09-01), Tilton et al.
patent: 5320181 (1994-06-01), Lantier et al.
patent: 5501280 (1996-03-01), Brisco
patent: 6220359 (2001-04-01), Poulard
patent: 6263969 (2001-07-01), Stoesz et al.
patent: 6446613 (2002-09-01), Djordjevic
patent: 6585048 (2003-07-01), Heijnen
patent: 6666273 (2003-12-01), Laurel
patent: 6695049 (2004-02-01), Ostocke et al.
patent: 6702024 (2004-03-01), Neugebauer
patent: 6820697 (2004-11-01), Churchill
patent: 6896049 (2005-05-01), Moyes
patent: 6973974 (2005-12-01), McLoughlin et al.
patent: 7108071 (2006-09-01), Freiheit et al.
patent: 7225830 (2007-06-01), Kershaw
patent: 2002/0074134 (2002-06-01), Cook et al.
patent: 2003/0098163 (2003-05-01), Hebert et al.
patent: 2 099 483 (1982-04-01), None
patent: WO 2004/101950 (2004-11-01), None
International Search Report. PCT/EP 03/11250. Aug. 17, 2004. Reference No. PCT/US2006/028322.
Ramos-Candelaria, Mayflor, et al. Calcite Inhibition Field Trials at the Mindanao Geothermal Production Field (MGPF), Philippines, Proceedings World Geothermal Congress 2000: Kyushu-Yohoku, Japan, May 28-Jun. 10, 2000.
Water Injection with the High Lift Injection Valve, Redspider Technology, 6 pages, Copyright 2007. Retrieved online on Sep. 17, 2008 from: http://www.redspiders.com/products/injection—valve—specialists.htm.
Tubing-Retrievable Chemical-Injection Valve, Weatherford International, Ltd., 2 pages. Copyright 2005. Retrieved online on Sep. 17, 2008 from: http://www.redspiders.com/products/injection—valve—specialists.htm.
Water Injection Valve, Omega Completion Technology, Ltd., 2 pages, Mar. 11, 2008.
Baker Hughes Incorporated
Cantor & Colburn LLP
Hutchins Cathleen R
Thompson Kenneth
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