Method of controlling flow through a drill string using a...

Details Method of controlling flow through a drill string using a... Method of controlling flow through a drill string using a...

2010-05-07

2011-12-06

Gay, Jennifer H (Department: 3676)

Wells

Processes

Placing or shifting well part

C166S321000, C166S374000, C175S318000, C137S496000, C137S512100

Reexamination Certificate

active

08069926

ABSTRACT:
A downhole valve comprises a tubular body and a valve member. The valve member is normally closed and in the closed position may prevent or restrict passage of a working fluid through the body. The valve member is movable to an open position, a first working fluid pressure differential being necessary to move the valve member from the closed position and a lower second working fluid pressure differential being necessary to maintain the valve member in the open position.

REFERENCES:
patent: 2268010 (1941-12-01), Baum
patent: 2348047 (1944-05-01), Yost
patent: 2743083 (1956-04-01), Zublin
patent: 2746721 (1956-05-01), Moore
patent: 2771091 (1956-11-01), Baker et al.
patent: 2781774 (1957-02-01), Baker et al.
patent: 2802482 (1957-08-01), Arnhold
patent: 3032111 (1962-05-01), Corley, Jr. et al.
patent: 3051246 (1962-08-01), Clark, Jr. et al.
patent: 3051549 (1962-08-01), Clark
patent: 3385370 (1968-05-01), Knox et al.
patent: 3385372 (1968-05-01), Knox
patent: 3457994 (1969-07-01), Stachowiak
patent: 3640351 (1972-02-01), Coyne et al.
patent: 3894818 (1975-07-01), Tschirky
patent: 3899033 (1975-08-01), Van Huisen
patent: 3933209 (1976-01-01), Sweeney
patent: 3941196 (1976-03-01), Curington et al.
patent: 3965980 (1976-06-01), Williamson
patent: 3987848 (1976-10-01), Canterbury
patent: 4063594 (1977-12-01), Canterbury
patent: 4067358 (1978-01-01), Streich
patent: 4072166 (1978-02-01), Tiraspolsky et al.
patent: 4187918 (1980-02-01), Clark
patent: 4270569 (1981-06-01), Reay et al.
patent: 4275795 (1981-06-01), Beimgraben et al.
patent: 4280524 (1981-07-01), Beimgraben
patent: 4401171 (1983-08-01), Fuchs
patent: 4481973 (1984-11-01), O'Brien et al.
patent: 4487221 (1984-12-01), Zwart
patent: 4615399 (1986-10-01), Schoeffler
patent: 4712619 (1987-12-01), Stepp et al.
patent: 4729432 (1988-03-01), Helms
patent: 4819745 (1989-04-01), Walter
patent: 4830122 (1989-05-01), Walter
patent: 4953595 (1990-09-01), Kotlyar
patent: 4953622 (1990-09-01), Lehr et al.
patent: 4979577 (1990-12-01), Walter
patent: 5009272 (1991-04-01), Walter
patent: 5048622 (1991-09-01), Ide
patent: 5174392 (1992-12-01), Reinhardt
patent: 5190114 (1993-03-01), Walter
patent: 5279670 (1994-01-01), Watanabe et al.
patent: 5320181 (1994-06-01), Lantier, Sr. et al.
patent: 5411049 (1995-05-01), Colvard
patent: 5520256 (1996-05-01), Eddison
patent: 5577560 (1996-11-01), Coronado et al.
patent: 5662180 (1997-09-01), Coffman et al.
patent: 5690177 (1997-11-01), Budde
patent: 5836395 (1998-11-01), Budde
patent: 5850881 (1998-12-01), Rodger et al.
patent: 5909771 (1999-06-01), Giroux et al.
patent: 6173784 (2001-01-01), Shaposhnikov et al.
patent: 6279670 (2001-08-01), Eddison et al.
patent: 6431294 (2002-08-01), Eddison et al.
patent: 6439318 (2002-08-01), Eddison et al.
patent: 6508317 (2003-01-01), Eddison et al.
patent: 6588518 (2003-07-01), Eddison
patent: 6622795 (2003-09-01), Hebert et al.
patent: 6666273 (2003-12-01), Laurel
patent: 6820697 (2004-11-01), Churchhill
patent: 6877566 (2005-04-01), Selinger et al.
patent: 7086486 (2006-08-01), Ravensbergen et al.
patent: 7168493 (2007-01-01), Eddison
patent: 7523792 (2009-04-01), El-Rayes et al.
patent: 7726418 (2010-06-01), Ayling
patent: 7766084 (2010-08-01), Churchill
patent: 2002/0050359 (2002-05-01), Eddison
patent: 2003/0209350 (2003-11-01), Laurel
patent: 2004/0163811 (2004-08-01), McKee et al.
patent: 2005/0211471 (2005-09-01), Zupanick
patent: 2007/0187112 (2007-08-01), Eddison et al.
patent: 2008/0029268 (2008-02-01), Macfarlane
patent: 2009/0032261 (2009-02-01), Eddison et al.
patent: 2009/0104021 (2009-04-01), Draeger et al.
patent: 2010/0044054 (2010-02-01), de Boer
patent: 2010/0212912 (2010-08-01), Eddison et al.
patent: WO 01/06086 (2001-01-01), None
UKPTO, Examination Report, Jul. 23, 2009, pp. 1-3, UK.

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