Intelligent intermittent pumping control device for oil pumping machine and control method of intelligent intermittent pumping control device

Abstract

The invention discloses an intelligent intermittent pumping control device for an oil pumping machine. The intermittent pumping control device for the oil pumping machine comprises an intermittent pumping controller, an electric control box, a displacement sensor, a load sensor and a wireless antenna; the displacement sensor measures displacement at a polished rod of the oil pumping machine and is connected to the intermittent pumping controller; the load sensor measures a load at the polished rod of the oil pumping machine and is connected to the intermittent pumping controller; the intermittent pumping controller is connected with the electric control box, and comprises a power supply module, a communication module, a control module and an electric quantity module; the electric quantity module acquires the current, the voltage and the power of the oil pumping machine in a working process, and transmitting the current, the voltage and the power of the oil pumping machine to the control module; the communication module is connected with the wireless antenna; the control module acquires start-stop information of the oil pumping machine according to the load and the displacement at the polished rod of the oil pumping machine, and transmits a start-stop command to the electric control box; the electric control box comprises a power supply unit and a frequency converter, and realizes the start-stop of the oil pumping machine and the adjustment of jig frequency according to the command of the intermittent pumping controller. The invention also discloses a control method of the intermittent pumping control device for the oil pumping machine.

Description

technical field [0001] The invention belongs to the technical field of automatic oil extraction, and in particular relates to an intelligent inter-pumping control device and a control method for a pumping unit. Background technique [0002] With the continuous exploitation of oil, some oil wells have entered the middle and later stages of exploitation, the formation pressure is continuously decreasing, and the liquid supply capacity is getting weaker and weaker. However, the liquid production rate of pumping unit selection and rod pump design is far greater than the liquid supply capacity of oil wells, resulting in insufficient liquid supply in a large number of oil wells. The data show that: more than 30% of the wells with insufficient liquid supply are in the state of empty pumping during 50% to 80% of the operating time. Therefore, the energy-saving and production-increasing research of pumping units has attracted much attention from all walks of life. [0003] From the...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an intelligent inter-pumping control device for pumping units, which can reduce the working time of the pumping unit and increase the load rate of the motor under the condition of ensuring stable output, so as to solve the problem of Inefficiency problems currently existing in oilfields caused by insufficient fluid supply to oil wells

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