Pump efficiency adjusting intelligent oil pumping unit

Abstract

The invention provides a pump efficiency adjusting intelligent oil pumping unit. The pump efficiency adjusting intelligent oil pumping unit is arranged in an oil well and can pull an oil pump to pumpoil according to pump efficiency set by a worker; the pump efficiency adjusting intelligent oil pumping unit comprises an oil pumping action device and an oil pumping control device used for controlling the oil pumping action device to act. According to the pump efficiency input and set by the worker, a corresponding reference indicator diagram is generated; and the corresponding reference indicator diagram is compared with a current indicator diagram which is generated according to a current electric parameter, obtained by measurement, and a stored fixed electric parameter and a stored transmission parameter. According to offset between the current indicator diagram and the reference indicator diagram, a corresponding adjusting frequency is generated; and a current frequency of a drivingmotor is adjusted according to the adjusting frequency; and a current frequency of the driving motor is adjusted according to the adjusting frequency to control the oil pumping action mechanism to pull the oil pumping efficiency of the oil pump.

Description

technical field [0001] The invention belongs to the technical field of pumping unit equipment, and in particular relates to an intelligent pumping unit for pump efficiency adjustment. Background technique [0002] Common pumping units are traditional pumping equipment widely used in oil fields, and are usually directly driven by ordinary AC asynchronous motors. The crank belt drives the beam with the counterweight and balance weight, and drives the downhole oil pump to reciprocate up and down in a fixed period, so as to send the oil under the oil well to the ground. [0003] The situation of the oil layer under the oil well is very complicated, and there are rich oil wells, poor oil wells, thin oil wells, and heavy oil wells. In addition, as far as the oil pump of the pumping unit itself is concerned, the gap between the worn piston and the bushing is a difficult problem to solve, and the changing formation factors such as sand, wax, water, gas and other complex conditions ...

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Problems solved by technology

However, this method can only manually change the stroke times of the pumping unit, which increases the workload of the workers. Moreover, due to the complex and changeable situation in the oil well, the workers in the oil field cannot grasp the situation in the oil well in time, and cannot set the maximum value in time. The optimal control frequency is adapted to the situation in the oil well, so that the average efficiency of the oil pump is low, and the power consumption per unit output is high, which does not meet the current purpose of saving energy and reducing consumption of the oil well.

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