Solenoid actuator and pulse drive

Details Solenoid actuator and pulse drive Solenoid actuator and pulse drive

1988-04-14

1990-09-04

Neuder, William P.

Wells

With electrical means

Electrical motor

166319, 340855, 340861, E21B 3410

Patent

active

049536168

ABSTRACT:
A subsurface valve-actuator combination for well production tubing is described. The valve is urged to closed position but held open by a battery-operated latch of the actuator. A receiver-relay in the battery-actuator circuit maintains a switch closed to permit the latch to be energized as long as the receiver-relay receives an electromagnetic signal transmitted from the earth's surface. The latch is deenergized upon interruption of the signal and/or if the battery power is insufficient to energize the same.

REFERENCES:
patent: 2322639 (1943-06-01), Kuhles
patent: 2354887 (1944-08-01), Silverman et al.
patent: 2411696 (1946-11-01), Silverman et al.
patent: 3737845 (1973-06-01), Maroney et al.
patent: 3961308 (1976-06-01), Parker
patent: 4147222 (1979-04-01), Patten et al.
patent: 4191248 (1980-03-01), Huessch et al.
patent: 4351037 (1982-07-01), Scherbatskoy
patent: 4579177 (1986-04-01), Going, III
patent: 4736791 (1988-04-01), Rorden et al

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