Full function downhole valve and method of operating the valve

Details Full function downhole valve and method of operating the valve Full function downhole valve and method of operating the valve

2011-06-07

2011-06-07

Gay, Jennifer H (Department: 3676)

Wells

Processes

Placing or shifting well part

C166S318000, C166S374000

Reexamination Certificate

active

07954555

ABSTRACT:
Downhole valves comprise a housing having a bore, a port, upper and lower recesses disposed in an inner wall surface of the bore, the upper recess disposed above the port and the lower recess disposed below the port, and upper and lower pistons disposed in the bore. The upper and lower pistons each comprise a bore with a port in communication with housing bore. During run-in, the housing port is blocked by the lower piston. Actuation of the lower piston unblocks the housing port and aligns the lower piston port with the lower recess. Actuation of the upper piston closes the housing port and aligns the upper piston port with the upper recess. Alignment of the ports of the pistons with their respective recesses permits fluid flow through the tool both when the valve is opened by the lower piston and closed by the upper piston.

REFERENCES:
patent: 3527297 (1970-09-01), Todd
patent: 3633671 (1972-01-01), Nelson
patent: 4260017 (1981-04-01), Nelson et al.
patent: 5020600 (1991-06-01), Coronado
patent: 5024273 (1991-06-01), Coone et al.
patent: 5048611 (1991-09-01), Cochran
patent: 5174379 (1992-12-01), Whiteley et al.
patent: 6253861 (2001-07-01), Carmichael et al.
patent: 6571875 (2003-06-01), Bissonnette et al.
patent: 7011153 (2006-03-01), Erkol
patent: 7147052 (2006-12-01), Erkol
patent: 7500526 (2009-03-01), Telfer
patent: 7628213 (2009-12-01), Telfer
patent: 7661478 (2010-02-01), Palmer et al.
patent: 7665545 (2010-02-01), Telfer
patent: 2003/0141059 (2003-07-01), Mauldin et al.
patent: 2004/0094304 (2004-05-01), Turner et al.
patent: 2007/0240883 (2007-10-01), Telfer
patent: 2008/0093080 (2008-04-01), Palmer et al.
patent: 2009/0056952 (2009-03-01), Churchill
patent: 2010/0270030 (2010-10-01), Ashy et al.
patent: 2010/0319927 (2010-12-01), Yokley et al.
Single-Action Bypass Sub brochure, 2007, p. 1, Mi Swaco, US.A.
Single-Action Bypass Sub Jetting Tool brochure, 2007, p. 1, Mi Swaco, U.S.A.
Dennis Denney, Pipe-Rotation Effect on Hole Cleaning for Water-Based Drilling Fluids in Horizontal and Deviated Wells, Journal of Petroleum Technology, Nov. 2008, pp. 65-66, 68; Society of Petroleum Engineers; USA.

Affiliated with

Also associated with

Rating

Full function downhole valve and method of operating the 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 Full function downhole valve and method of operating the valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Full function downhole valve and method of operating the valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2683661