Pumping well fixed liquid level pumping servo device using electric parameter curve analysis technology

Abstract

The invention belongs to the field of pumping unit equipment in oil fields, and in particular relates to a pumping unit well fixed liquid level swabbing servo device using electric parameter curve analysis technology, and the pumping unit structure includes a displacement sensor, a base, a beam, a bracket, and a main donkey. head, auxiliary donkey head, counterweight donkey head, speed regulating motor, flywheel, slide seat, slide plate, stroke adjustment assembly and counterweight assembly; the base is fixedly installed on the ground, and the main donkey head and counterweight donkey head are fixedly installed on Describe the two ends of the traveling beam, and the auxiliary donkey head is fixedly installed on the traveling beam. According to the electric parameter curve data obtained by real-time detection, combined with the structural parameters of the pumping unit, the present invention establishes the dynamic mathematical model of the suspension point indicator diagram of the pumping unit, calculates and analyzes the change of the liquid level of the pumping unit well, and automatically adjusts the pumping unit. Stroke times, so as to achieve the fixed liquid level of the pumping well. Combining with the stroke rate adjustment method based on the servo speed regulation technology in the prior art, the adjustment accuracy of the pumping speed is higher and continuous adjustment can be realized.

Description

technical field [0001] The invention belongs to the field of pumping unit equipment, and in particular relates to a pumping well fixed liquid level pumping servo device using electric parameter curve analysis technology. Background technique [0002] The pumping unit is the most widely used oil production equipment in oilfield production. There are many types of pumping units, among which the beam pumping unit is the most widely used one. The ideal working state of the beam pumping unit is that the pumping speed is exactly the same as the oil output speed of the formation, that is, the downhole liquid level remains constant. In actual production, since the oil output rate of the formation is uncontrollable, the oil pumping rate can only be adjusted passively to keep the downhole liquid level as constant as possible. [0003] On the traditional pumping unit, in order to ensure the constant oil well liquid level, the method adopted is to measure the oil well liquid level thro...

AI Technical Summary

Problems solved by technology

This method has a long interval between collection cycles, high labor intensity, low work efficiency, and the real-time performance of the liquid level cannot be guaranteed, and the stroke times of the pumping unit cannot be adjusted in real time. This method cannot guarantee the constant liquid level of the oil well.

Images