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

A curve analysis, pumping well technology, applied in wellbore/well components, production fluids, earthmoving and other directions, can solve the problems of low work efficiency, high labor intensity of workers, long interval between collection cycles, etc., to achieve accurate determination. The effect of liquid level control, good economic benefits, and high adjustment accuracy

Active Publication Date: 2021-05-14
大庆世佳石油设备股份有限公司
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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.

Method used

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

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with accompanying drawing:

[0030] like figure 1 As shown, the present embodiment includes a pumping unit body and an electrical parameter acquisition device, wherein the pumping unit body refers to the mechanical body of the pumping unit, and the electrical parameter acquisition device refers to the voltage and current used for the servo motor 12 when working. , speed, and torque are collected by electrical devices. In the prior art, the electrical parameter acquisition device represented by the frequency converter has been widely used in the electrical control system of the beam pumping unit, and will not be repeated here.

[0031] In the present invention, the pumping unit body includes a base 11, a beam 5, a bracket 6, a main donkey head 3, an auxiliary donkey head 4, a counterweight donkey head 7, a speed regulating motor 12, a flywheel 14, a slide seat, a slide plate 15, a Stroke assembly 1 an...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00F16F15/28
CPCE21B43/121F16F15/28
Inventor 王强赵世军谭少文李全恕
Owner 大庆世佳石油设备股份有限公司
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