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Stroke frequency regulating device of oil pumping machine

A technology for adjusting devices and pumping units, which is applied to the control of AC motors, mining fluids, electrical components, etc., can solve the problems that the daily fluid production cannot be directly and accurately judged, and the working stroke adjustment of pumping units has no basis to rely on, etc. Achieve the effect of real-time response stroke adjustment accuracy and reduce failure rate

Active Publication Date: 2011-10-12
PETROCHINA CO LTD
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Problems solved by technology

However, for a specific oil well, its daily liquid production cannot be directly and accurately judged. The key is that crude oil belongs to the multiphase flow of water, gas and oil. At present, there is no suitable flow meter to accurately judge the flow rate. no evidence

Method used

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  • Stroke frequency regulating device of oil pumping machine
  • Stroke frequency regulating device of oil pumping machine
  • Stroke frequency regulating device of oil pumping machine

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0019] Such as figure 1 As shown, the pumping unit stroke adjustment device provided in this embodiment includes:

[0020] The power map oil measuring unit 110 is used to collect oil well data and process the oil well data according to the oil well parameters to obtain the pump efficiency and liquid production rate of the oil well;

[0021] The number of strokes is adjusted by the single-chip microcomputer 130, which is used to judge and obtain the minimum working number of strokes of the pumping unit under the maximum daily fluid production according to the data obtained by the analysis of th...

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Abstract

The invention provides a stroke frequency regulating device of an oil pumping machine. The stroke frequency regulating device comprises an indicator diagram oil gauging unit, a stroke frequency regulating single-chip microcomputer and a frequency converter, wherein the indicator diagram oil gauging unit is used for acquiring oil well data and processing the oil well data according to oil well parameters to obtain the pump efficiency and the liquid yield of an oil well; the stroke frequency regulating single-chip microcomputer is connected with the indicator diagram oil gauging unit and is used for judging to obtain the minimal working stroke frequency data of the oil pumping machine according to the pump efficiency and the liquid yield of the oil well; and the frequency converter is connected with the stroke frequency regulating single-chip microcomputer and is used for regulating the working frequency of an electric motor of the oil pumping machine according to the minimal working stroke frequency data. According to the invention, the working stroke frequency can be precisely regulated according to the liquid yield per day of a specific oil well; in addition, the stroke frequency regulation of the oil pumping machine is completely digitalized, and can be controlled remotely without manual operation on site; the stroke frequency regulating device provided by the invention has the features of response instantaneity and high stroke frequency regulating precision and can monitor the working condition of the oil pumping machine in real time, so that the fault rate of a mechanical mining system is reduced.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to an oil and gas pumping unit stroke adjustment device. Background technique [0002] At present, the contradiction in the concentration of domestic oil fields is the large number of low-yield oil wells. Under the existing working parameter combination of pumping units, the phenomena of "empty pumping" and "dry pumping" are common, the pump efficiency and system efficiency are both low, and the power consumption per ton of liquid remains high. For a long time, in order to eliminate the phenomenon of "empty pumping" and "dry pumping", improve pump efficiency and system efficiency, reduce power consumption per ton of liquid, and realize low-carbon oilfield development, many technical measures have been taken, and certain results have been achieved. But each of these technologies has certain defects. There are currently three commonly used methods: [0003] The fir...

Claims

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Application Information

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IPC IPC(8): E21B43/00H02P27/04
Inventor 李红才秦德福白文雄李海东侯军曾亚勤杨瑞许敏甘庆明辛宏李明江尤小荣
Owner PETROCHINA CO LTD
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