Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2009-03-31
2011-12-13
Bagnell, David (Department: 3672)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S319000, C166S334200, C137S861000
Reexamination Certificate
active
08074721
ABSTRACT:
A switching apparatus, system, and method configured to operate at least a dual line downhole tool via a single pressure source are provided. The switching apparatus may comprise a housing configured to contain a switching piston actuated by a fluid pressure source. The apparatus may further contain a switching valve comprising a first and second coupling passageway coupled to a switching valve housing comprising four ports. The switching piston may actuate the switching valve, alternating the coupling between a first configuration in which the four ports are communicatively coupled into two sets of ports and a second configuration in which the four ports are communicatively coupled into an alternate two sets of ports. The first configuration may configure the fluid pressure source to actuate the downhole tool in a first manner and the second configuration may configure the fluid pressure source to actuate the downhole tool in a second manner.
REFERENCES:
patent: 2173531 (1939-09-01), De Long
patent: 3191628 (1965-06-01), Kirkwood et al.
patent: 3370612 (1968-02-01), Holl
patent: 3780809 (1973-12-01), Ayers et al.
patent: 4509405 (1985-04-01), Bates
patent: 4813749 (1989-03-01), Cilles
patent: 4896722 (1990-01-01), Upchurch
patent: 4915168 (1990-04-01), Upchurch
patent: 4915168 (1994-09-01), Upchurch
patent: 5950733 (1999-09-01), Patel
patent: 6170571 (2001-01-01), Ohmer
patent: 6182764 (2001-02-01), Vaynshteyn
patent: 6523613 (2003-02-01), Rayssiguier et al.
patent: 6536529 (2003-03-01), Kerr et al.
patent: 7182139 (2007-02-01), Rayssiguier et al.
patent: RE39583 (2007-04-01), Upchurch
patent: 7306043 (2007-12-01), Toekje et al.
patent: 7337850 (2008-03-01), Contant
patent: 7503385 (2009-03-01), Tips et al.
patent: 2007/0056745 (2007-03-01), Contant
patent: 2008/0164027 (2008-07-01), Sanchez
patent: 2009/0065218 (2009-03-01), Loretz et al.
patent: 2268999 (1994-01-01), None
Anyan Steven L.
Guven Oguzhan
Martinez Ricardo
Alker Richard
Bagnell David
Schlumberger Technology Corporation
LandOfFree
Method for controlling a downhole tool with a linearly... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for controlling a downhole tool with a linearly..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for controlling a downhole tool with a linearly... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4269012