Multiple interventionless actuated downhole valve and method

Details Multiple interventionless actuated downhole valve and method Multiple interventionless actuated downhole valve and method

2006-09-19

2006-09-19

Tsay, Frank (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S334200

Reexamination Certificate

active

07108073

ABSTRACT:
The multiple interventionless actuated downhole valve includes a valve movable between an open and a closed position to control communication between an annular region surrounding the valve and an internal bore and more specifically controlling communication between above and below the valve, and at least two remotely operated interventionless actuators in operational connection with the valve, wherein each of the interventionless actuators may be operated independently by absolute tubing pressure, absolute annulus pressure, differential pressure from the tubing to the annulus, differential pressure between the annulus and the tubing, tubing or annulus multiple pressure cycles, pressure pulses, acoustic telemetry, electromagnetic telemetry or other types of wireless telemetry to change the position of the valve and allowing the valve to be continually operated by mechanical apparatus.

REFERENCES:
patent: 4694903 (1987-09-01), Ringgenberg
patent: 4979568 (1990-12-01), Spencer et al.
patent: 6125930 (2000-10-01), Moyes
patent: 6619388 (2003-09-01), Dietz et al.

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