Wells – Valves – closures or changeable restrictors – Fluid operated
Reexamination Certificate
2007-01-23
2010-11-23
Thompson, Kenneth (Department: 3676)
Wells
Valves, closures or changeable restrictors
Fluid operated
C166S323000, C166S375000, C166S321000
Reexamination Certificate
active
07836956
ABSTRACT:
A method for positional control of an actuator includes applying pressure to both an input line and an output line connected to the actuator and then releasing a predetermined volume of fluid from the output line, thereby displacing a piston of the actuator a corresponding predetermined distance. A system for positional control of an actuator includes the actuator included in a well tool positioned in a well; the input line connected to the actuator and extending to a remote location; the output line connected to the actuator and extending to the remote location; and a fluid volume measurement device connected to the output line at the remote location. The fluid volume measurement device is operative to meter the predetermined volume of fluid from the output line.
REFERENCES:
patent: 4467833 (1984-08-01), Satterwhite et al.
patent: 5251703 (1993-10-01), Skinner
patent: 5547029 (1996-08-01), Rubbo et al.
patent: 6315049 (2001-11-01), Hickey et al.
patent: 6585051 (2003-07-01), Purkis et al.
patent: 6736213 (2004-05-01), Bussear et al.
patent: 6782952 (2004-08-01), Garay et al.
patent: 6796213 (2004-09-01), McKendree et al.
patent: 7145471 (2006-12-01), Purkis et al.
patent: 2001/0037884 (2001-11-01), Schultz et al.
patent: 2002/0014338 (2002-02-01), Purkis et al.
patent: 2003/0048197 (2003-03-01), Purkis et al.
patent: 2003/0131990 (2003-07-01), Tubel et al.
International Search Report for PCT/US06/02304, dated May 7, 2007.
Written Opinion of the International Searching Authority for PCT/US06/02304, dated May 7, 2007.
International Search Report and Written Opinion issued May 26, 2009, for International Patent Application Serial No. PCT/US08/75668, 11 pages.
Australian Office Action issued Feb. 4, 2010, for Australian Patent Application Serial No. 2006336428, 2 pages.
Canadian Office Action issued Nov. 18, 2009, for Canadian Patent Application Serial No. 2,637,326, 3 pages.
Giuliani Corrado
Smithson Mitchell C.
Tips Timothy R.
Ro Yong-Suk
Smith Marlin R.
Thompson Kenneth
Welldynamics Inc.
LandOfFree
Positional control of downhole actuators does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Positional control of downhole actuators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positional control of downhole actuators will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4225822