Quick and automatic adjustment and balance method of pumping unit
An automatic adjustment and pumping unit technology, which is applied in earthwork drilling, wellbore/well components, production fluid, etc., can solve problems such as low manual operation efficiency, affecting oil well production, and easy fall off of balance blocks
Active Publication Date: 2020-10-09
CHINA PETROLEUM & CHEM CORP +1
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
The balance cannot be adjusted in place at one time, the qualified rate of adjustment is low, the balance block is easy to fall off during the manual operation, and there are safety hazards, etc. The efficiency of manual operation is low, and the shutdown operation affects the production of the oil well.
Method used
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[0088] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.
[0089] Such as figure 1 as shown, figure 1 It is a flow chart of the method for quickly and automatically adjusting the balance of the pumping unit of the present invention.
[0090] In step 101, data is collected, and the output shaft torque of the reduction box is calculated. Data such as motor input power, speed, suspension point displacement and load are collected, and two methods are used to calculate the torque of the output shaft of the gearbox.
[0091] (1) Calculate the output torque of the reducer according to the input power and speed of the motor:
[0092]
[0093] Among them: T 1 -- reducer output torque;
[0094] P--motor input power;
[0095] n - motor speed;
[0096] i - reducer reduction ratio;
[0097] η--The use coefficien...
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The invention provides a fast and automatic balance adjustment method for a pumping unit. The fast and automatic balance adjustment method for the pumping unit comprises the steps that 1, data is collected, and torque of an output shaft of a reducer is calculated; 2, balance degree is calculated according to the difference of the peak torque between an upper stroke and a lower stroke; 3, whether the balance degree exceeds the range or not is determined; 4, the adjustment direction is determined; 5, the adjustment distance is calculated according to the balance degree to enable the balance degree to reach the set range; and 6, a control signal is output for direction adjustment and distance adjustment for balance weight. The fast and automatic balance adjustment method for the pumping unitis based on the pumping unit capable of electrically adjusting the position of the balance weight, the data, such as polished rod load, walking beam inclination angle and electric parameters, are detected; and balance adjustment without stopping is achieved, the operation risk is reduced, and the adjustment efficiency is improved.
Description
technical field [0001] The invention relates to a beam pumping unit used in oilfield production, in particular to a method for quickly and automatically adjusting and balancing the pumping unit. Background technique [0002] Due to the characteristics of the oil well, the suspension point load difference between the upstroke and the downstroke of the beam pumping unit is relatively large. The output shaft of the reduction box moves one circle, and the suspension point completes a stroke process. The four-bar linkage mechanism of the beam pumping unit allows the suspension point load to be transmitted to the output shaft of the reduction box, and the formed torque also changes with the rotation angle, resulting in alternating torque on the output shaft of the reduction box, especially the suspension point Running on the up and down strokes, the torque difference is large, and the unbalanced operation of the system has a great impact on the gearbox, motor, pumping unit, etc.,...
Claims
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IPC IPC(8): E21B43/00
CPCE21B43/00
Inventor 于雪林江少波智勤功姜东杭发琴张中慧郑强刘晓玲王慧莉黄润晶
Owner CHINA PETROLEUM & CHEM CORP