Oil well pump efficiency improvement potential space determination method
A determination method and oil well pump technology, applied in the direction of instruments, data processing applications, calculations, etc., can solve the problems that affect well selection, cannot reasonably evaluate the effect of efficiency improvement measures, and have no specifics
Active Publication Date: 2018-07-27
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
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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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The invention discloses an oil well pump efficiency improvement potential space determination method. The method comprises the following steps of obtaining actual liquid production capacity Q1 of a wellhead of an oil well, theoretical displacement Q0 of an oil well pump and production capacity Q2 of the wellhead of the oil well; according to the actual liquid production capacity Q1 of the wellheadof the oil well and the theoretical displacement Q0 of the oil well pump, determining actual pump efficiency eta s of the oil well pump; according to the production capacity Q2 of the wellhead of theoil well and the theoretical displacement Q0 of the oil well pump, determining maximum pump efficiency eta max realizable for the oil well pump; and according to the actual pump efficiency eta s of the oil well pump and the maximum pump efficiency eta max realizable for the oil well pump, calculating oil well pump efficiency improvement potential space A. According to the method, the oil well pump efficiency improvement potential space can be determined.
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...
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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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