Control system for oilwell pumping installation

Details Control system for oilwell pumping installation Control system for oilwell pumping installation

E - Fixed Constructions

21

B

166/27

E21B 43/18 (2006.01)

Patent

CA 1063010

CONTROL SYSTEM FOR OILWELL PUMPING INSTALLATION Abstract of the Disclosure. A monitoring and control system for use on a pumped oilwell and particularly advantageous for wells which frequently achieve pump-off, utilizes a flow vol- ume measuring means, such as a turbine flowmeter, in the produc- tion line and an electronic monitoring system to receive the flaw signal from the measuring means over a unit time, compare it to a reference flow volume signal, and shut down the well pump prime mover when the volume per unit of time passing through the produc- tion line is less than the preset reference volume. The invention also features a recycle function to restart the pumping apparatus after it has been shut down a predetermined period of time, a re- cycle counter to accumulate the number of consecutive unsuccessful recycles of the pumping apparatus, and a complete well shutdown feature actuated when the number of consecutive unsuccessful re- cycles reaches a preset number. 1a

274933

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