CN210134914U - Efficiency monitoring equipment of oil pumping unit - Google Patents
Efficiency monitoring equipment of oil pumping unit Download PDFInfo
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- CN210134914U CN210134914U CN201821733712.4U CN201821733712U CN210134914U CN 210134914 U CN210134914 U CN 210134914U CN 201821733712 U CN201821733712 U CN 201821733712U CN 210134914 U CN210134914 U CN 210134914U
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Abstract
The application provides a monitoring facilities of beam-pumping unit efficiency, through the monitoring facilities of beam-pumping unit efficiency of this application design, controlling means is used for sending the acquisition instruction simultaneously to wireless indicator and the wireless collection device that participates in for wireless indicator and the wireless collection device that participates in carries out data collection simultaneously, and load and/or displacement data that follow-up controlling means received the feedback, and behind the electrical parameter data, confirm the work efficiency of beam-pumping unit as early as possible. By adopting the scheme, the problem that the efficiency monitoring operation process of the pumping unit is complex in the related technology is solved, the working efficiency of the pumping unit at each moment is accurately determined in real time, and the energy-saving efficiency of the current pumping unit is further determined.
Description
Technical Field
The application relates to the field of communication, particularly, relate to a monitoring facilities of beam-pumping unit efficiency.
Background
In the related art, a mechanical oil extraction (pumping unit) system is the first major consumer of oil field production, and energy-saving monitoring of an oil pumping unit in an oil field is an important work for energy-saving production of the oil field. The main content of the current energy-saving monitoring work of the pumping unit is to measure an indicator diagram of the pumping unit, electrical parameters of a pump and the dynamic liquid level in a well, and manually record the number of the pumping unit, parameters of a motor, the pressure of a sleeve and the temperature on site. The related instrument equipment mainly comprises indicator diagram monitoring equipment, electric parameter monitoring equipment and working fluid level testing equipment, wherein the three sets of testing equipment respectively and independently operate, indicator diagram data, electric parameters and dynamic liquid level data are stored in the equipment, after field testing is completed, the equipment returns to an office place, data are exported from an equipment memory through respective software, manual statistics is carried out on analysis tables, the energy consumption condition of the pumping unit is calculated and analyzed, and energy conservation evaluation is carried out.
Aiming at the problem that the efficiency monitoring operation process of the pumping unit in the related technology is complex, no effective solution is available at present.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides monitoring equipment for the efficiency of an oil pumping unit, and the monitoring equipment at least solves the problem that the efficiency monitoring operation process of the oil pumping unit in the related technology is complex.
According to an embodiment of the present invention, there is provided a device for monitoring the efficiency of a pumping unit, including: the control device is connected to the wireless power indicator and the wireless parameter acquisition device through wireless signals and used for simultaneously sending acquisition instructions to the wireless power indicator and the wireless parameter acquisition device and determining the working efficiency of the oil pumping unit according to data fed back by the wireless power indicator and the wireless parameter acquisition device; the wireless dynamometer is used for acquiring load and/or displacement data of the oil pumping unit after receiving the acquisition instruction and feeding back the load and/or displacement data to the control device; and the wireless parameter acquisition device is used for acquiring the electrical parameter data of the oil pumping unit after receiving the acquisition instruction and feeding back the electrical parameter data to the control device.
Through the monitoring facilities of beam-pumping unit efficiency of this application design, controlling means is used for sending down the collection instruction to wireless indicator and wireless parameter collection system simultaneously for wireless indicator and wireless parameter collection system carry out the data acquisition simultaneously, and load and/or displacement data that follow-up controlling means received the feedback, and behind the electrical parameter data, confirm the work efficiency of beam-pumping unit as early as possible. By adopting the scheme, the problem that the efficiency monitoring operation process of the pumping unit is complex in the related technology is solved, the working efficiency of the pumping unit at each moment is accurately determined in real time, and the energy-saving efficiency of the current pumping unit is further determined.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a monitoring device for pumping unit efficiency according to the present application;
FIG. 2 is a schematic diagram of a wireless dynamometer according to the present document;
FIG. 3 is a block diagram of a pumping unit energy saving monitoring synchronous acquisition analysis system according to the present application;
FIG. 4 is a schematic view of a wireless dynamometer according to the present application;
fig. 5 is a schematic physical diagram of the pumping unit energy saving monitoring synchronous acquisition and analysis system according to the application.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In the related technology, the indicator diagram monitoring equipment adopts a strain sensor to measure load, a pull rope type displacement sensor measures displacement of an oil rod, a high-precision electric energy analysis instrument measures electric parameters, and sound waves measure the depth of the underground liquid level.
The defects of the field oil pumping machine energy-saving monitoring work in the related technology are as follows:
1. data acquisition is not synchronous, and basic data for intuitively judging the working condition of equipment at the bottom of a well by combining electrical parameters are lacked. The data (indicator diagram and electrical parameters) integrated after the oil pumping unit is tested are not in the same period, the number of electrical parameter acquisition points is small, the point of a complete stroke cycle cannot be taken out, the change of electrical parameters such as current, voltage, active power, power factor and the like when the data are acquired synchronously at the same point of the indicator diagram cannot be drawn, and a means for judging and analyzing the working condition of the oil pumping unit by combining the electrical parameters is lacked.
2. The pull rope type displacement sensor in the related technology is inconvenient to operate and easy to damage. Under the operation environment of the oil field, if the pull wire is careless, the pull wire can be quickly rolled back after being unhooked or broken; because the pull wire is long, under the continuous acceleration of the spring force, the pull wire finally impacts the shell of the sensor at an extremely high speed, so that the shell of the sensor is damaged or the pull wire is completely wound inside until the elastic force of the spring is completely released. The use is inconvenient, and even the sensor needs to be calibrated again.
3. The working fluid level test is not automatically controlled, and certain operation risk exists. When the dynamic liquid level of a high-pressure well is tested on site, an operator manually pulls the air gun bolt at the well head, and certain risks exist in the operation.
4. The monitoring result can not be immediately output on site, and the site needs to be reciprocated and the test work is repeated under the complex condition. The monitoring data is manually copied and recorded after being returned to a base under the limitation of site and instrument conditions, then data analysis and processing can be carried out, the manual work is large, input errors are prone to occurring, problems in aspects such as test data abnormity are not prone to being found in time, repeated monitoring is caused, cost is increased, meanwhile, the data processing period is long, monitoring results cannot be accurately and timely provided for a production site and adjusted, and the overall energy-saving management level of an oil field company is affected.
In the automatic process control project of the pumping unit in each oil field in China for nearly ten years, automatic acquisition and monitoring of a work diagram, electrical parameters and a working fluid level of the pumping unit can be basically realized, but the precision of the adopted sensors is not high, most of displacement sensors adopt sensors for measuring angular displacement and acceleration, and then the displacement is converted into displacement through calculation, so that the error is large. The number of indicator diagram points is about 200 points, and the precision can only reach 1%. The pumping units used in oil extraction in oil field are powered by asynchronous motors, the load characteristic is periodic potential energy load, and the common electrical parameter measuring instrument cannot accurately measure the electrical parameters of the load. The automatic control system of the oil pumping unit considers the cost, the electric parameter measuring instrument is basically developed and produced by domestic manufacturers, the electric parameter measuring instrument and the calculation processing mode of electric energy are different among manufacturers, the measuring precision is not high, and the grade of the meter is generally 1.0 grade. The grade of an electric parameter measuring instrument used in the current energy-saving monitoring work is 0.25, along with the improvement of an electric parameter measuring technology, the updating of the instrument is fast, new technologies appear in several years, the electric parameter measuring instrument for energy-saving monitoring is continuously updated, and the latest technology is used. In the energy-saving monitoring process, the measurement of electrical parameters is still manually operated, monitoring data is stored in instrument equipment, and the portability and the mobility of equipment installation and disassembly and the independence of a power supply are required in the energy-saving monitoring work and are not possessed by the existing automatic control system of the oil pumping unit. Therefore, the equipment for monitoring the pumping unit in the automatic control system of the pumping unit is not suitable for energy-saving monitoring work.
The embodiment of the application provides a monitoring facilities of beam-pumping unit efficiency, and figure 1 is according to the monitoring facilities of beam-pumping unit efficiency of the application, includes:
the control device 102 is connected to the wireless dynamometer 104 and the radio parameter acquisition device 106 through wireless signals, and is used for simultaneously issuing acquisition instructions to the wireless dynamometer 104 and the radio parameter acquisition device 106 and determining the working efficiency of the pumping unit according to data fed back by the wireless dynamometer 104 and the radio parameter acquisition device 106;
the wireless indicator 104 is configured to, after receiving the acquisition instruction, acquire load and/or displacement data of the pumping unit and feed back the load and/or displacement data to the control device 102;
the radio parameter collecting device 106 is configured to collect the electrical parameter data of the pumping unit after receiving the collecting instruction, and feed back the electrical parameter data to the control device 102.
The wireless connection between the control device 102 and the wireless indicator 104 and the wireless parameter acquisition device 106 may be implemented via a 490M wireless data transfer module.
Through the monitoring facilities of beam-pumping unit efficiency of this application design, controlling means is used for sending down the collection instruction to wireless indicator and wireless parameter collection system simultaneously for wireless indicator and wireless parameter collection system carry out the data acquisition simultaneously, and load and/or displacement data that follow-up controlling means received the feedback, and behind the electrical parameter data, confirm the work efficiency of beam-pumping unit as early as possible. By adopting the scheme, the problem that the efficiency monitoring operation process of the pumping unit is complex in the related technology is solved, the working efficiency of the pumping unit at each moment is accurately determined in real time, and the energy-saving efficiency of the current pumping unit is further determined.
Alternatively, fig. 2 is a schematic diagram of a wireless dynamometer according to the present document, and as shown in fig. 2, the wireless dynamometer 104 includes a wireless load device 202 and/or a wireless displacement device 204,
a strain sensor is arranged in the wireless load device 202, and is used for acquiring the load of the pumping unit according to the strain sensor after receiving the acquisition instruction;
the wireless displacement device 204 is internally provided with a laser sensor and is used for acquiring the motion displacement of the sucker rod through the laser sensor after receiving the acquisition instruction.
Optionally, the wireless load device 202 and/or the wireless displacement device 204 are mounted at a polished rod of the pumping unit.
Optionally, the wireless load device 202 comprises at least one of: the system comprises a strain sensor, an MSP430 singlechip, a 24-bit A/D conversion chip, a 490M wireless data transmission module and a lithium battery.
Optionally, the wireless displacement device 204 comprises at least one of: the system comprises a laser sensor, an MSP430 singlechip, a 24-bit A/D conversion chip, a 490M wireless data transmission module and a lithium battery.
Optionally, the wireless loading device 202 and the wireless displacement device 204 satisfy at least one of the following characteristics: the collection frequency of the wireless loading device 202 and the wireless displacement device 204 is 20 ms; when the wireless loading device 202 and the wireless displacement device 204 acquire 800 points of data, the acquired data are fed back to the control device 102.
Optionally, a 3169 clamp meter is connected to the wireless parameter acquisition device 106; the 3169 clamp is configured to acquire multiple electrical parameter data over multiple sampling channels, wherein the electrical parameter data includes at least one of: active, current, voltage, power factor; and for transmitting the electrical parameter data to the radio parameter acquisition device 106.
The wireless parameter acquisition device and the 3169 clamp meter can be connected through wires or wirelessly.
Optionally, the radio parameter collecting device 106 obtains the power quality analysis data collected by the 3169 clamp meter through 1 RS232 serial port.
Optionally, after receiving the feedback data, the control device 102 is further configured to: determining indicator diagrams corresponding to the load and the displacement; drawing at least one of the following schematic diagrams in synchronization with the indicator diagram: a schematic diagram of current and displacement, a schematic diagram of active power and displacement, a schematic diagram of power factor and displacement, and a schematic diagram of voltage and displacement; and determining the working efficiency of the oil pumping unit according to the indicator diagram and at least one schematic diagram.
Optionally, the apparatus further comprises: and the wireless dynamic liquid level device is used for receiving a second acquisition instruction of the control device 102, determining the liquid level depth of the oil well corresponding to the pumping unit in a echo wave acquisition mode, and feeding back the liquid level depth to the control device 102.
The implementation objectives of the embodiments in this document include the following 3 aspects:
1. the problem of synchronous acquisition of energy-saving monitoring data of the pumping unit is solved, basic analysis data for judging the working state of the pumping unit is added, and the fault point of the pumping unit is judged more accurately;
2. the matched system can provide a monitoring result and an energy-saving evaluation result on site;
3. the problems of easy damage and inconvenient operation of the displacement sensor are solved.
This application mainly includes and is used for beam-pumping unit energy-saving monitoring synchronous acquisition analytic system, and fig. 3 is the structure chart according to beam-pumping unit energy-saving monitoring synchronous acquisition analytic system of this application, as shown in fig. 3, this system architecture includes: the device comprises a wireless load device, a wireless displacement device (the wireless load device and the wireless displacement device are collectively called as a wireless indicator), a 3169 clamp meter, a wireless parameter acquisition device, a wireless working fluid level device, a wireless video device, a field portable book, a matched software part, a communication module and a remote expert operation station.
The first part and the wireless dynamometer comprise a wireless load device and a wireless displacement device
Fig. 4 is a schematic diagram of a wireless dynamometer according to the present application, and as shown in fig. 4, includes a stress sensing unit, a load sensor conversion circuit, a high-energy battery, a power supply modem unit, a CPU processing unit, a wireless communication unit, an a/D signal processing unit, and a displacement sensor.
The wireless load device is designed by adopting a high-precision strain sensor (a specific embodiment of a stress sensing unit in fig. 4), a low-power MSP430 singlechip, a 24-bit high-precision A/D conversion chip, a 490M wireless data transmission module, a lithium battery and a matching circuit. The wireless load device has 1 path of 0.5% high-precision load collection and 1 path of low-frequency 490M wireless data transmission.
The wireless displacement device is designed by adopting a high-precision laser sensor (a specific embodiment of the displacement sensor in fig. 4), a low-power MSP430 singlechip, a 24-bit high-precision A/D conversion chip, a 490M wireless data transmission module, a lithium battery and a matching circuit. The wireless displacement device has 1-path high-precision displacement acquisition, 5mm repetition precision and 1-path low-frequency 490M wireless data transmission.
The two devices receive the same command 1 sent by the upper computer, and simultaneously start measurement and storage, wherein the data acquisition frequency is fastest 20ms (adjustable), and 800 points are stored. And after the acquisition and storage are finished, sending an end mark, receiving a data request of the upper computer, and returning 800 point data. And the upper software processes the data and draws a indicator diagram. It should be added that the host computer in this document corresponds to the control device in the above embodiment, and may be a device such as a notebook.
The second part, 3169 the wireless parameter acquisition device of the clamp meter adopts low-power consumption MSP430 singlechip, 24 bit high accuracy A/D conversion chips, 490M wireless data transmission module, max232 conversion chip, lithium cell and supporting circuit design completion, has 4 voltage acquisition channels, 1 RS232 serial ports, 1 low frequency 490M wireless data transmission. The device wirelessly receives a command 1 sent by an upper computer, and simultaneously starts to acquire 4 paths of 3169 clamper voltage data (active power, current, voltage and power factor) with the wireless dynamometer, and the acquisition frequency and the storage point number are the same. And the upper computer draws current/displacement, active power/displacement, power factor/displacement and voltage/displacement which are completely synchronous with the same stroke of the indicator diagram. And the 1-path RS232 serial port is connected with the 3169 clamp meter serial port, and is used for collecting, storing, analyzing and forwarding the 3169 clamp meter rest electric energy quality analysis data.
And the third part and the wireless dynamic liquid level device utilize the existing automatic control dynamic liquid level equipment and are additionally provided with a serial port acquisition and wireless forwarding device.
And the fourth part is used for collecting data of 3 sets of equipment (the wireless parameter collecting device, the wireless dynamic liquid level device and the wireless indicator) on site, automatically drawing a curve, calculating energy-saving evaluation data such as indicator area, liquid level depth, balance degree, polished rod power of the pumping unit, ground efficiency, underground efficiency and the like, automatically making an evaluation report, automatically recording an original data report and carrying out basic analysis and judgment according to a knowledge base.
And the fifth part and the wireless load device are arranged at the position of the suspension rope, and are used for collecting the load of the oil pumping unit by using the strain force sensor, receiving the wireless command of the upper computer, and collecting, storing and sending the wireless command.
The radio parameter acquisition device obtains real-time current, voltage, active power and power factors through A/D sampling of the output of the 4-path 3169 clamp meter. Other power parameters monitored by the 3169 clamp meter are obtained through the RS232 port.
The wireless dynamic liquid level device receives a wireless command of the upper computer, sends out a gun, collects echo waves, obtains the liquid level depth and transmits data back to the upper computer.
And a sixth part, namely, a field portable local upper software system, receives the low-frequency wireless signal of the field device 490M, draws a synchronization curve, a diagram and a working fluid level curve, calculates the energy-saving efficiency and outputs an energy-saving detection report on the field.
The seventh part, the implementation of synchronous acquisition:
the field portable local upper energy-saving monitoring software wirelessly transmits an acquisition command 1 (equivalent to an acquisition instruction in the embodiment), the wireless load device, the wireless displacement device and the wireless parameter acquisition device receive the command 1 and start to acquire data at the same time, the acquisition frequency is uniform, the acquisition speed is 20ms (settable) at the fastest speed, the number of acquired storage points is consistent, and 800 points are stored.
After the collection is finished, the system automatically stops, 3 devices delay for a certain time in succession, and a successful collection mark is returned to the upper computer. The upper computer reads the data stored in the 3 devices in sequence, judges the up-down stroke according to the synchronous data, and draws 5 synchronous curves, namely current/displacement, active power/displacement, power factor/displacement, voltage/displacement and load/displacement (indicator diagram) curves of the same stroke. After the first four synchronous curves are added, basic analysis data for judging the working state of the pumping unit can be increased, and the fault point of the pumping unit can be judged more accurately.
Fig. 5 is a schematic physical diagram of a system for synchronously acquiring and analyzing energy-saving monitoring of a pumping unit according to the present application, and is shown in fig. 5, wherein the system includes a pumping unit, a wireless indicator (corresponding to the wireless indicator), a wireless acquisition device (corresponding to the wireless parameter acquisition device in the above-mentioned embodiment), a dynamic liquid level tester (corresponding to the wireless dynamic liquid level device in the above-mentioned embodiment), and an electric energy comprehensive tester (corresponding to a part of the control device in the above-mentioned embodiment).
The embodiment of the energy-saving monitoring synchronous acquisition and analysis system of the pumping unit comprises the following steps:
the method comprises the following steps that firstly, a wireless load and displacement device is arranged at a suspension rope, the wireless load utilizes a strain sensor to collect the load of the oil pumping unit, receives a wireless command of an upper computer, and collects, stores and sends the wireless command.
The displacement device utilizes the laser sensor to collect the movement displacement of the oil rod of the oil pumping unit, receives the wireless command of the upper computer, and collects, stores and sends the command.
And step two, the radio parameter acquisition device obtains real-time current, voltage, active power and power factors through A/D sampling of the output of the 4-path 3169 clamp meter. Other power parameters monitored by the 3169 clamp meter are obtained through the RS232 port.
And step three, the wireless dynamic liquid level device receives a wireless command of the upper computer, sends out a gun, collects echo waves, obtains the liquid level depth, and transmits data back to the upper computer.
And step four, the field portable local upper software system receives the low-frequency wireless signals of the field equipment 490M, draws a synchronization curve, a work diagram and a working fluid level curve, calculates the energy-saving efficiency and provides an energy-saving detection report on the field.
By adopting the technical scheme, the energy-saving monitoring wireless synchronous acquisition, analysis and evaluation system for the pumping unit meets or is higher than the requirements of energy-saving monitoring precision and data quantity of the current oil field pumping unit, the acquisition frequency is the fastest 20ms, the indicator diagram point number is increased from 200 and 256 points per stroke to more than or equal to 400 points per stroke, and the calculation of important parameters (balance, indicator diagram area and the like) of energy-saving calculation is more accurate.
The real-time synchronous data acquisition of the electrical parameters and the indicator diagram is realized, the real-time graphic display of the acquired data is realized through a matched software system, the means for judging the working state of the pumping unit is increased, and the analyzability of the energy-saving monitoring data is improved.
The automatic processing and evaluation analysis of the energy-saving monitoring test data of the oil pumping unit in the oil field are realized, the manual workload of energy-saving monitoring of the oil pumping unit in the oil field is greatly reduced, manual input errors are avoided, and the energy-saving calculation analysis period and the retest rate are effectively reduced.
The problem of stay cord formula displacement sensor inconvenient operation, fragile is solved.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present application.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An apparatus for monitoring the efficiency of a pumping unit, comprising:
the control device is connected to the wireless power indicator and the wireless parameter acquisition device through wireless signals and used for simultaneously sending acquisition instructions to the wireless power indicator and the wireless parameter acquisition device and determining the working efficiency of the oil pumping unit according to data fed back by the wireless power indicator and the wireless parameter acquisition device;
the wireless dynamometer is used for acquiring load and/or displacement data of the oil pumping unit after receiving the acquisition instruction and feeding back the load and/or displacement data to the control device;
and the wireless parameter acquisition device is used for acquiring the electrical parameter data of the oil pumping unit after receiving the acquisition instruction and feeding back the electrical parameter data to the control device.
2. The apparatus according to claim 1, characterized in that the wireless indicator comprises a wireless load device and/or a wireless displacement device, wherein,
a strain force sensor is arranged in the wireless load device and used for collecting the load of the oil pumping unit according to the strain force sensor after receiving the collection instruction;
the wireless displacement device is internally provided with a laser sensor and is used for acquiring the motion displacement of the sucker rod through the laser sensor after receiving the acquisition instruction.
3. The apparatus of claim 2, wherein the wireless load device and/or the wireless displacement device is mounted at a boom of the pumping unit.
4. The apparatus of claim 2, wherein the wireless payload device comprises at least one of:
the system comprises a strain sensor, an MSP430 singlechip, a 24-bit A/D conversion chip, a 490M wireless data transmission module and a lithium battery.
5. The apparatus of claim 2, wherein the wireless displacement device comprises at least one of:
the system comprises a laser sensor, an MSP430 singlechip, a 24-bit A/D conversion chip, a 490M wireless data transmission module and a lithium battery.
6. The apparatus of claim 2, wherein the wireless loading device and the wireless displacement device satisfy at least one of the following characteristics:
the collection frequency of the wireless loading device and the wireless displacement device is 20 ms;
and when the wireless load device and the wireless displacement device acquire 800 points of data, the acquired data are fed back to the control device.
7. The apparatus of claim 1, wherein the wireless parameter acquisition device is connected with a 3169 clamp meter;
the 3169 clamp is configured to acquire multiple electrical parameter data over multiple sampling channels, wherein the electrical parameter data includes at least one of: active, current, voltage, power factor;
and means for transmitting the electrical parameter data to the wireless parameter acquisition device.
8. The apparatus of claim 7, wherein the wireless parameter collection device obtains the power quality analysis data collected by the 3169 clamp meter through a 1-way RS232 serial port.
9. The apparatus of claim 7, wherein the control means, upon receiving the fed back data, is further configured to:
determining indicator diagrams corresponding to the load and the displacement;
drawing at least one of the following schematic diagrams in synchronization with the indicator diagram: a schematic diagram of current and displacement, a schematic diagram of active power and displacement, a schematic diagram of power factor and displacement, and a schematic diagram of voltage and displacement;
and determining the working efficiency of the oil pumping unit according to the indicator diagram and at least one schematic diagram.
10. The apparatus of claim 1, further comprising:
and the wireless dynamic liquid level device is used for receiving a second acquisition instruction of the control device, determining the liquid level depth of the oil well corresponding to the pumping unit in a echo wave acquisition mode, and feeding back the liquid level depth to the control device.
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| CN111088976A (en) * | 2018-10-24 | 2020-05-01 | 中国石油天然气股份有限公司 | System and method for monitoring efficiency of oil pumping unit |
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| CN111088976A (en) * | 2018-10-24 | 2020-05-01 | 中国石油天然气股份有限公司 | System and method for monitoring efficiency of oil pumping unit |
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