Pressure activated pump-off control

Details Pressure activated pump-off control Pressure activated pump-off control

F - Mech Eng,Light,Heat,Weapons

04

B

342/13.1

F04B 49/02 (2006.01) G05D 9/12 (2006.01)

Patent

CA 1288502

Abstract of the Disclosure A pressure-activated pump-off control for inter- mitting the operation of a low-production well. A pressure sensor and a series of three timers control the operation of the pump to maximize efficiency. A first fill-in timer disables the pump for a first time period during which fluids accumulate in the well. When the fill-in timer times out, both a second pump-up timer and the pump motor are energized. If the pressure sensor determines adequate minimum fluid pressure in the tubing, the pressure switch is opened, the second timer is de-energized, and control of the pump being transferred to a third pump-up timer in conjunction with the pressure sensor. When the pressure falls below the desired minimum, the pressure switch will remain closed and after a predetermined period of time corresponding to a desired number of strokes, the pump-off timer times out, shuts off the pump and re-energizes the fill-in timer for another cycle.

545890

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