Wells – Processes – With indicating – testing – measuring or locating
Patent
1998-11-18
2000-10-31
Mai, Lanna
Wells
Processes
With indicating, testing, measuring or locating
16625008, 166 666, 417 63, 34087011, 34087016, 324694, E21B 4704
Patent
active
061387541
ABSTRACT:
A system for use in a subterranean well includes a production tubing and a valve. The production tubing has a port to receive well fluid from a formation. The valve is mounted to the production tubing and includes a sealed housing, a motor, a valve cover, an actuator drive and a sensor. The motor is located inside the housing, and the actuator drive is actuated by the motor to move the valve cover over the port to selectively control the communication of the well fluid between the formation and the passageway of the tubing. The sealed housing may permit the well fluid to accumulate inside the housing over time. The sensor is located inside the housing and provides an indication of the amount of well fluid that has accumulated inside the housing. This information may be useful for such exemplary purposes as predicting when the valve will fail and for evaluating the condition of the valve.
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Robertson Gerald W.
Veneruso Anthony F.
Gort Elaine
Mai Lanna
Schlumberger Technology Corporation
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