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A Method for Determining the Potential Space of Oil Well Pumping Efficiency Improvement

A determination method and oil well pump technology, applied in data processing applications, instruments, calculations, etc., can solve problems affecting well selection, unable to reasonably evaluate the effect of efficiency improvement measures, and lack of specificity

Active Publication Date: 2022-02-01
PETROCHINA CO LTD
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Problems solved by technology

[0003] According to literature research, the current research on the reasonable pump efficiency of oil wells mainly focuses on the analysis and research of the factors affecting the pump efficiency, and then through the wellbore technical support (gas prevention, scaling and other technical supporting measures), to ensure that the oil well pump operates under reasonable production parameters (reasonable submergence), so as to achieve a reasonable level of pump efficiency in the operation of the oil well pump. However, there is no specific method for the determination of the reasonable pump efficiency range and the definition of the potential space for improving the pump efficiency of the oil well, which affects the selection of measures to improve the pump efficiency of the oil well. Well, in the process of formulating and implementing technical measures to improve oil well pump efficiency, there is no reference basis, and after the implementation of oil well pump efficiency improvement measures, the effect of efficiency improvement measures cannot be reasonably evaluated

Method used

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  • A Method for Determining the Potential Space of Oil Well Pumping Efficiency Improvement
  • A Method for Determining the Potential Space of Oil Well Pumping Efficiency Improvement
  • A Method for Determining the Potential Space of Oil Well Pumping Efficiency Improvement

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Embodiment 1

[0031] For oil well A, the production parameters are: the stroke is 2.5m, the stroke rate is 1.5 times / min, the pump hanger is 1400m, the pump diameter is 28mm, and the single volume of liquid at the wellhead is 1.21m 3 / d; Through theoretical calculation, the recovery capacity of the oil well is 2.54m 3 / d; The theoretical displacement of the oil well is 3.33m 3 / d.

[0032] According to the above calculated data, get η s 36.3%, η max is 76.3%, so the improvement potential of oil well A is 76.3%-36.3%=40%, which has a large improvement space, and there is 40 percentage points of pump efficiency improvement potential space.

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Abstract

The invention discloses a method for determining the potential space for improving the pump efficiency of an oil well, which comprises the following steps: obtaining the actual liquid production Q at the wellhead of the oil well 1 , Oil pump theoretical displacement Q 0 and wellhead production capacity Q 2 , and then according to the actual liquid production Q at the wellhead of the oil well 1 and the theoretical displacement Q of the well pump 0 Determine the actual pump efficiency η of the oil well pump s , and according to the wellhead production capacity Q 2 and the theoretical displacement Q of the well pump 0 Determine that the oil well pump can achieve the maximum pump efficiency η max , and then according to the actual pump efficiency η of the oil well pump s and the oil well pump can achieve the maximum pump efficiency η max Calculate the potential space A of oil well pump efficiency improvement, this method can determine the potential space of oil well pumping efficiency improvement.

Description

technical field [0001] The invention belongs to the field of petroleum exploitation, and relates to a method for determining the potential space for improving the pumping efficiency of oil wells. Background technique [0002] In the production process of oil wells, pump efficiency is an important reference index to measure the production level of oil wells. Limited by the wellbore conditions of oil wells and the degree of difference in the optimization of production parameters, the pump efficiency level of the same oil well varies greatly; but how to define the reasonable The level of pump efficiency, how to evaluate the improvement space of oil well pump efficiency, and provide the basis for formulating adaptive efficiency improvement technical countermeasures and evaluating the effect of efficiency improvement measures have always been an urgent problem to be solved in the production process of oil wells. [0003] According to literature research, the current research on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/02
CPCG06Q50/02
Inventor 李大建周志平甘庆明陆梅刘涛刘天宇张秦川张岩石海霞牛彩云辛宏
Owner PETROCHINA CO LTD
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