Reverse acting lock open crossover valve

Details Reverse acting lock open crossover valve Reverse acting lock open crossover valve

1974-03-18

1976-06-01

Cohan, Alan

Valves and valve actuation

Valve actuator is valve casing or extension thereof

166226, 166 51, E21B 4304

Patent

active

039603660

ABSTRACT:
The apparatus and method provides the ability to selectively treat a producing zone in a well and to gravel pack an annulus in the well casing outside a screen type liner pipe. A tubing string extending from the surface of the well bore is connected to a packer by a crossover valve. Flow down the tubing string is directed to an annulus below the packer, then inwardly through the screen type liner, then upward through the crossover into the annulus above the packer and then to the earth's surface. Communication from the crossover to the annulus above the packer may be selectively closed to permit a treating pressure to be exerted down the tubing to force a treating fluid into the producing zone. The treating pressure is isolated from the casing above the packer to protect the casing above the packer.

REFERENCES:
patent: 2059631 (1936-11-01), Erwin
patent: 2569437 (1951-10-01), Baker
patent: 2649916 (1953-08-01), Brown
patent: 2738012 (1956-03-01), Springer
patent: 2822874 (1958-02-01), Brown
patent: 2874927 (1959-02-01), Conrad
patent: 3126963 (1964-03-01), Graham
patent: 3153451 (1964-10-01), Chancellor et al.
patent: 3182726 (1965-05-01), Stone, Jr.
patent: 3190360 (1965-06-01), Farley
patent: 3211230 (1965-10-01), Stone, Jr.
patent: 3412805 (1968-11-01), Gibbin et al.
patent: 3627046 (1971-12-01), Miller
patent: 3636696 (1968-01-01), Berryman
patent: 3710862 (1973-01-01), Young

Affiliated with

Also associated with

Rating

Reverse acting lock open crossover 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 Reverse acting lock open crossover valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reverse acting lock open crossover valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2400269