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A method for adjusting the operation balance of pumping well

A technology for pumping wells and adjustment methods, which is applied in earthwork drilling, wellbore/well components, production fluids, etc., and can solve problems such as difficulty in providing crank balance weight and corresponding radius data, large test errors, and difficult testing, etc. question

Active Publication Date: 2017-02-22
哈尔滨斯特凯峰电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The current method is mostly used on site, and the maximum current on the upstroke and downstroke is measured as a balance adjustment judgment, but the test error is relatively large; the power method is more accurate in practical applications, and the test is more convenient, but it is difficult to provide the weight of the crank balance weight and Corresponding radius data; the torque method test is more accurate, not as convenient as the first two methods, and it is difficult to implement the test on site

Method used

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  • A method for adjusting the operation balance of pumping well
  • A method for adjusting the operation balance of pumping well
  • A method for adjusting the operation balance of pumping well

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0103] Specific embodiment 1: The process of the method for adjusting the operation balance of a pumping unit well described in this embodiment is:

[0104] Step 1. Collect the electrical parameters of the pumping well in real time at high speed during normal operation of the pumping unit. The data collection speed is greater than or equal to 20 times per second. At the same time, measure the electrical parameters of the motor input: current, voltage, active power, and determine the pumping The time when the crank of the engine runs to the top dead center and the bottom dead center of the suspension point of the corresponding pumping unit well;

[0105] Pumping unit stroke: the pumping unit crank balance weight runs to the corresponding bottom dead center of the pumping unit wellhead (crank operating angle is 0° or 360°), and the pumping unit crank balance weight runs to the corresponding pumping unit wellhead top dead center ( The crank operating angle is 180°), the process from b...

specific Embodiment approach 2

[0115] This embodiment will give a detailed description of the first embodiment. Give an example of the net torque superimposed value P of the upper and lower strokes of the consecutive multiple strokes up and down In the calculation process, suppose it is required to take the net torque superimposed value P of the upper and lower strokes of consecutive m strokes up and down And the torque factor of m strokes

[0116] The net torque data collected on the upstroke of the first stroke is X 1 , X 2 , X 3 ,...X n , Then the average value of all net torques in the upstroke within the stroke P 1 on Is: (X 1 +X 2 +X 3 +……+X n ) / n;

[0117] The upstroke of the first stroke and the data acquisition simultaneously correspond to the calculated torque factor as Z 1 ,Z 2 ,Z 3 ,……Z n , Then the average value of all torque factors of the upstroke in the stroke Is: (Z 1 +Z 2 +Z 3 +……+Z n ) / n;

[0118] The net torque data collected on the downstroke of the first stroke is Y 1 , Y 2 , Y 3 ,...Y n ,...

specific Embodiment approach 3

[0176] This embodiment provides a detailed description of the method for adjusting the operation balance of the pumping unit described in the first or second embodiment:

[0177] To make the pumping unit run in a balanced way, the motor should do positive work and equal work in the up and down strokes, that is, the principle of balance. The simple method is to add a heavy object to the rear beam of the pumping unit, and let the sucker rod's own weight and the motor do work on the heavy object during the downstroke: A w ——The work done by the self-weight of the sucker rod and the electric motor to the heavy object in the downstroke;

[0178] A d ——The work done by the sucker rod string to the heavy object, that is, the work done by the suspension point in the downstroke;

[0179] A md ——The work done by the motor on the heavy object during the downstroke, that is, the work done by the motor during the downstroke;

[0180] A w =A d +A md

[0181] From the above formula: A md =A w -A d...

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Abstract

The invention relates to an adjustment method for operation balance of a rod-pumped well and belongs to the technical field of oil production of oil fields. The adjustment method aims at achieving convenient and practical measurement of balance adjustment of the rod-pumped well on site. The adjustment method is characterized in that an active power average value and an upstroke and downstroke net torque superposition value P<up and down> are obtained; an annulus working fluid level HY is obtained according to P<up and down>; according to an upstroke active power average value <up> and a downstroke active power average value <down>, whether balance blocks need to be moved and adjusted and whether the moving directions of the balance blocks need to be adjusted are judged; if adjustment is needed, the adjustment moving amount of the balance blocks of a pumping unit is determined, and the balance blocks of the pumping unit are adjusted. By the adoption of the power method, the relation is established between the adjustment amount of the balance blocks and the variation of a working fluid level HY actually measured when balance adjustment is needed and a working fluid level HY<before> obtained when balance adjustment is not needed, stored work condition information is perfected according to the model as for the same rod-pumped well, the stored information can be freely called during testing, actually measured data are used for correcting working condition parameters, and the method used for conducting practical measurement of balance adjustment of the rod-pumped well and conducting adjustment on site after measurement is achieved.

Description

Technical field [0001] The invention relates to a method for adjusting the operation balance of an oil pumping well, relates to the technical field of oil field pumping well measurement, and belongs to the technical field of oil extraction. Background technique [0002] If the pumping unit does not have a balancing device, when the motor drives the pumping unit to run, the suspension load during the up and down strokes is extremely unbalanced. The motor that meets the load of the up stroke will do negative work during the down stroke, resulting in the pumping unit The force is extremely unbalanced during the up and down strokes. The consequences are: severely reducing the efficiency and life of the motor; causing intense vibration of the pumping unit; destroying the uniformity of the crank rotation speed and worsening the working conditions of the sucker rod and the pump. Therefore, the pumping unit must adopt a balancing device. [0003] Over the years, there have been roughly t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00
CPCE21B43/121
Inventor 金凯金奇峰邹文江刘春荣尹志国李德荣王伟
Owner 哈尔滨斯特凯峰电子有限公司
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