CN215761645U - Automatic monitoring system for working fluid level of oil well - Google Patents
Automatic monitoring system for working fluid level of oil well Download PDFInfo
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- CN215761645U CN215761645U CN202121041593.8U CN202121041593U CN215761645U CN 215761645 U CN215761645 U CN 215761645U CN 202121041593 U CN202121041593 U CN 202121041593U CN 215761645 U CN215761645 U CN 215761645U
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Abstract
The application relates to an oil well working fluid level automatic monitoring system, include: the device comprises an oil well working fluid level monitoring device, a remote control end and a remote application terminal. The oil well working fluid level monitoring device includes: the outer part of one side of the explosion-proof box body is provided with a switching cavity, and the oil well casing joint is detachably connected with the switching cavity and is communicated with the oil well casing in an annular mode; and the sound source generating unit is arranged in the explosion-proof box body and is electrically connected with the data processor of the control unit. The sound source generating unit sends out sound waves which are transmitted along the annular space of the oil well casing, the sound waves generate reflection echoes through barriers, the reflection echoes are received by the microphone and are converted into electric signals, the electric signals are analyzed and processed by the data processor and then are transmitted to the remote control end to be calculated, and the remote application terminal receives results and data curves obtained by the remote control end. This application simple structure adopts wireless transmission technique and the empty mode that self produced the sound and explode of oil well casing, and is safe, accurate, but wide application in oil well work.
Description
Technical Field
The utility model relates to the field of oil well liquid level monitoring, in particular to an automatic monitoring system for a working liquid level of an oil well.
Background
The working fluid level depth of the oil well is an important oil well working parameter, the working fluid level can reflect the liquid supply capacity of the oil well, the change of the working fluid level can be used for analyzing the water injection effect, and the bottom hole flowing pressure can be calculated through the working fluid level to analyze the formation pressure condition. The change of the working fluid level can reflect whether the oil well is normal or not, such as sand blockage, wax precipitation and the like, by combining the production data of the oil well. Therefore, the working fluid level of the oil well is monitored frequently, and the production parameters of the oil well, the water injection condition of the water injection well at the same level, and various conventional measures such as timely sand washing, well washing, wax removal and the like of the oil well are properly adjusted, so that the production capacity of the oil well can be exerted efficiently.
With the increasing popularization of the construction of the digital oil field, liquid level automatic testing equipment suitable for various well conditions is urgently needed, manual intervention is reduced, and automatic operation is really realized. Although some products are also applied to domestic oil wells at present, the oil wells have many limitations, mainly comprising the following aspects:
1. the defects that the traditional operation mode that the sounding bomb generates sound pulse during oil well liquid level testing is easy to generate sparks, cause explosion, hurt people and the like exist;
2. the installation is more complicated, and the disassembly is inconvenient;
3. the automatic heating can not be realized at low temperature;
4. the testing precision can not meet the requirement;
5. the automatic oil well casing pressure stabilizing function is not provided.
SUMMERY OF THE UTILITY MODEL
The technical problem that this application will be solved is that there is potential safety hazard, structure complicacy, signal unstability, measurement accuracy poor, does not possess the automatic stable oil well casing pressure function in the mode that oil well working fluid level automatic testing equipment adopted the acoustic pulse among the prior art.
In order to solve the above technical problem, the present application provides an automatic monitoring system for the working fluid level of an oil well, comprising: the oil well dynamic liquid level monitoring device comprises an explosion-proof box body, wherein a switching cavity is arranged outside one side of the explosion-proof box body, and an oil well casing joint is detachably connected with the switching cavity and is communicated with an oil well casing in an annular mode; the sound source generating unit is arranged inside the explosion-proof box body and comprises a built-in air chamber, a pressure sensor and an electromagnetic valve, a first opening of the built-in air chamber is connected with a first port of a one-way tee joint through a relief control valve, a second port of the one-way tee joint is connected with a high-pressure gas device outside the explosion-proof box body, and a third port of the one-way tee joint is connected with the atmosphere outside the explosion-proof box body; the second opening of the built-in air chamber is connected with the oil well casing through an electromagnetic valve; the control unit, data processor, microphone and power, the data processor connects the power, pressure sensor, air release control valve, electromagnetic valve and microphone electrically; the remote control end transmits signals with the control unit through a network and calculates and processes the received signals; and the remote application terminal is used for remotely controlling the automatic oil well working fluid level monitoring device through the remote control end.
According to the embodiment of the application, the top of the explosion-proof box body can be provided with a solar panel, and solar power is utilized for power generation.
According to an embodiment of the application, the data processor is embedded with an SD card.
According to the embodiment of the application, the data processor is provided with data interfaces of RS232, RS485, CAN, Zigbee, Ethernet and WIFI.
According to an embodiment of the application, the high pressure gas device is a high pressure nitrogen tank.
According to the embodiment of the application, the data processor is externally provided with an antenna for receiving network signals.
According to the embodiment of the application, the handle can be arranged on the explosion-proof box body.
According to the embodiment of the application, the heating module is further arranged in the explosion-proof box body and is electrically connected with the data processor.
According to the embodiment of the application, the oil well casing joint is in threaded connection with the adapter cavity.
According to the embodiment of the application, the network can be a GPRS outer network or an RTU inner network
Compared with the prior art, the automatic monitoring system for the dynamic liquid level of the oil well has the following beneficial effects:
1. according to the method, the oil well casing annulus associated gas or compressed gas is used, detection is carried out through controllable sonic explosion according to the pressure in the well, the casing pressure in the well is tested through a pressure sensor, and the casing pressure in the well is automatically monitored, regulated and controlled;
2. the acoustic wave required by the test is generated by using the casing gas in the oil well, so that the acoustic wave testing device is safe and environment-friendly;
3. the main testing units of the automatic monitoring device are integrally installed inside the explosion-proof box body, explosion-proof treatment is carried out, the structure is compact, and the oil well casing joint detachably connected with the switching cavity outside the explosion-proof box body is arranged, so that field installation and disassembly are facilitated;
4. the solar energy can be adopted for charging, so that the environment is protected and the energy is saved;
5. the remote control end of the system adopts a unique sound velocity calculation model and a working fluid level calculation model to carry out real-time accurate and stable calculation, optimizes a data model and realizes real-time dynamic monitoring of the working fluid level and casing pressure of the oil-gas well;
6. the data processor adopted by the application supports interface data exchange of RS232, RS485, CAN, Zigbee, Ethernet, WIFI and the like, optimizes GPRS and 2.4GRF wireless data transmission, increases the function of RF entering an oil field network, and has strong applicability;
7. the heating module is also arranged, so that the system can work reliably at the temperature of minus 30 ℃;
8. the automatic monitoring system is additionally provided with the built-in SD card, and the data storage capacity is expanded.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description only relate to some embodiments of the present application and are not limiting on the present application.
FIG. 1 is a functional block diagram of one embodiment of an automatic well fluid level monitoring system of the present application;
FIG. 2 is a schematic block diagram of another embodiment of the automatic well fluid level monitoring system of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and claims of this patent application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
General Packet Radio Service (GPRS), an available mobile data Service for GSM (global system for mobile communications) mobile phone users, belongs to a data transmission technology in second-generation mobile communications. The general packet radio service is a packet switching technology and has the advantages of real-time online, volume charging, fast login, high-speed transmission and free switching.
RTU is a short for REMOTE TERMINAL UNIT, a REMOTE data TERMINAL, used for monitoring, control and data acquisition applications. Has the functions of remote measurement, remote signaling, remote regulation and remote control.
The Zigbee technology is a wireless communication technology applied to short distances and low rates.
Fig. 1 is a schematic block diagram of an embodiment of an automatic monitoring system for oil well working fluid level according to the present application, and fig. 2 is a schematic block diagram of another embodiment of the present application.
The automatic monitoring system for the working fluid level of the oil well comprises an oil well working fluid level monitoring device, a remote control end and a remote application terminal.
The oil well dynamic liquid level monitoring device comprises an explosion-proof box body, a sound source generating unit and a control unit. The outer portion of one side of the explosion-proof box body is provided with a switching cavity, and the oil well casing joint is detachably connected with the switching cavity and communicated with the oil well casing in an annular mode. The sound source generating unit is arranged in the explosion-proof box body and comprises a built-in air chamber, a pressure sensor and an electromagnetic valve, a first opening of the built-in air chamber is connected with a first port of a one-way tee joint through a relief control valve, a second port of the one-way tee joint is connected with a high-pressure gas device outside the explosion-proof box body, and a third port of the one-way tee joint is connected with the atmosphere outside the explosion-proof box body; the second opening of the built-in air chamber is connected with the oil well casing annulus through an electromagnetic valve. And the control unit comprises a data processor, a microphone and a power supply, and the data processor is electrically connected with the power supply, the pressure sensor, the air release control valve, the electromagnetic valve and the microphone.
The data processor comprises a singlechip, a filter circuit, an A/D conversion part, a gain amplification part, a data memory, a wireless communication part, a gain control part, a pressure amplification circuit, a pressure amplification A/D conversion part and a wireless communication part, wherein the signal output end of the microphone is connected with the signal input end of the singlechip through the filter circuit, the gain amplification part and the A/D conversion part in sequence, the signal output end of the singlechip is connected with the gain amplification part through the gain control part, the pressure sensor is connected with the signal input end of the singlechip through the pressure amplification circuit and the pressure amplification A/D conversion part in sequence, and the signal output end of the singlechip is connected with a data interface of the data processor through a wireless transmission part. Wherein the wireless transmission part is electrically connected with an antenna arranged outside the data processor.
As shown in fig. 1 and 2, the remote control terminal may include a remote control computer, a database, a server, a display screen, etc., and may remotely receive signals transmitted by the oil well working fluid level monitoring device through a network, and at an actual oil well working site, the network may select a GPRS mode, a CDMA external network mode, or an RTU internal network mode such as WIFI or ZGBEE. After the remote control end receives the acoustic wave signal and the casing pressure signal which are analyzed and processed by the data processor of the oil well working fluid level monitoring device, the database of the remote control terminal adopts a unique sound velocity calculation model and a unique working fluid level calculation model to carry out real-time accurate and stable calculation, so that a result and a test curve are obtained, and the result and the test curve can be stored in a data memory of the data processor.
The remote application terminal can be a mobile phone, a tablet computer and/or a desktop computer, the remote application terminal can remotely control the oil well monitoring device through the remote control terminal, and can also directly carry out tasks setting, data calculation, checking and other work on the oil well monitoring device through a host control instrument on site, and the remote control terminal can send a calculated result and a test curve to the remote application terminal through a network, so that related workers can know the working condition of the field device through the application terminals of the mobile phone, the computer and the like at any time.
As shown in fig. 1, a sound source generating unit of the oil well dynamic liquid level monitoring device emits sound waves to propagate along the annular space of an oil well casing, the sound waves generate reflection echoes through barriers, the reflection echoes are received by a microphone and converted into electric signals, the electric signals are analyzed and processed by a data processor and then transmitted to a remote control end for calculation, and a remote application terminal can receive results and data curves obtained by the remote control end through a network.
As shown in fig. 2, the automatic oil well working fluid level monitoring system realizes interconnection and intercommunication between the on-site oil well working fluid level monitoring device and the remote application terminal through a wireless transmission mode and a remote application terminal of a network, a worker can use the remote application terminal such as a mobile phone and a computer to perform internet query at any place through an ethernet at any time, set on-site test data and check results, can also use a wireless or wired transmission mode on site, control the oil well working fluid level monitoring device through a host control room, set tasks, and download test results through a cloud end or a U disk, so that the automatic oil well working fluid level monitoring system is very convenient, does not need to be maintained on site by the worker at any time any more, greatly improves the working efficiency and reduces the labor cost.
Further, the data processor supports interface data exchange such as RS232, RS485, can (controller Area network), Zigbee, Ethernet (Ethernet), WIFI, and the like, and the wireless communication portion may adopt various forms such as GPRS, bluetooth, Zigbee, WIFI, 3G, 4G, and the like, and may also adopt standard extension interfaces such as RS485/323, and the like according to actual situations.
Further, the high-pressure gas device may be a high-pressure nitrogen tank.
Furthermore, the handle can be arranged outside the explosion-proof box body, so that the explosion-proof box body is convenient for workers to take.
Furthermore, the power source of the oil well working fluid level monitoring device can be solar energy charging or charging an alternating current power supply of a lithium battery, so that the top of the explosion-proof box body can be also provided with a solar panel.
Furthermore, a heating module can be arranged in the oil well working fluid level monitoring device, so that the device can reliably work at the temperature of minus 30 ℃.
Furthermore, a built-in SD card is added in the data memory of the data processor, and the storage capacity of the database is expanded.
Further, the oil well working fluid level automatic monitoring device is connected with the oil well casing ring through the oil well casing joint, the oil well casing joint can be connected with the switching cavity of the oil well working fluid level automatic monitoring device in a threaded connection mode, the application does not limit the connection mode, and the conventional connection mode in the field can be adopted.
The working process is as follows:
after a remote control end sends a test signal, the pressure of the oil well casing annulus is judged by a pressure sensor, when the pressure of the oil well casing annulus is low, an air control valve is opened, a high-pressure gas tank communicated through a one-way tee joint pressurizes a built-in air chamber, when the pressure reaches a set value, an electromagnetic valve is quickly opened and closed, the high-pressure gas of the built-in air chamber is quickly released into the oil well casing, the gas in the oil well casing annulus at a wellhead is instantly compressed to generate a compression shock wave, so that a vibration sound source-sound wave is formed, the sound wave is transmitted to the liquid level direction of an oil well along the oil well casing annulus, when an obstacle is met, part of the sound wave is reflected back to an automatic monitoring device and is absorbed by a microphone, the microphone receives an echo and converts the echo into an electric signal, the signal is conditioned, amplified, AD converted and the like by a controller, and then the signal is analyzed and processed by a data processor and transmitted to a remote control center in a wireless communication mode, and finally, the remote control center calculates to obtain liquid level curve data capable of reflecting the tubing coupling, the echo mark and the liquid level.
When the pressure of the oil well casing annulus is high, firstly, an air control valve is opened, the atmosphere outside an explosion-proof box body is communicated through a one-way tee joint, an electromagnetic valve is opened and closed quickly, a built-in air chamber is communicated with the oil well casing annulus quickly to generate a vibration sound source-sound wave, the sound wave is transmitted to the direction of the oil well liquid level along the oil well casing annulus, when an obstacle is met, part of the sound wave is reflected back to an automatic monitoring device and absorbed by a microphone, the microphone receives echo and converts the echo into an electric signal, the electric signal is conditioned, amplified, AD converted and the like through a controller, the signal is analyzed and processed by a data processor and then transmitted to a remote control center in a wireless transmission mode, and the remote control center finally calculates and obtains liquid level curve data capable of reflecting an oil pipe coupling, an echo mark and the liquid level.
To sum up, the automatic monitoring device of the oil well working fluid level of the application has the following beneficial effects:
1. according to the method, the oil well casing annulus associated gas or compressed gas is used, detection is carried out through controllable sonic explosion according to the pressure in the well, the casing pressure in the well is tested through a pressure sensor, and the casing pressure in the well is automatically monitored, regulated and controlled;
2. the acoustic wave required by the test is generated by using the casing gas in the oil well, so that the acoustic wave testing device is safe and environment-friendly;
3. the main testing units of the oil well working fluid level monitoring device are integrally installed inside the explosion-proof box body, explosion-proof treatment is carried out, the structure is compact, and the oil well casing pipe joint detachably connected with the switching cavity outside the explosion-proof box body is arranged, so that field installation and disassembly are facilitated;
4. the solar energy can be adopted for charging, so that the environment is protected and the energy is saved;
5. the remote control end of the system adopts a unique sound velocity calculation model and a working fluid level calculation model to carry out real-time accurate and stable calculation, optimizes a data model and realizes real-time dynamic monitoring of the working fluid level and casing pressure of the oil-gas well;
6. the data processor adopted by the application supports interface data exchange of RS232, RS485, CAN, Zigbee, Ethernet, WIFI and the like, optimizes GPRS and 2.4GRF wireless data transmission, increases the function of RF entering an oil field network, and has strong applicability;
7. the heating module is also arranged, so that the system can work reliably at the temperature of minus 30 ℃;
8. the automatic monitoring system is additionally provided with the built-in SD card, and the data storage capacity is expanded.
The above description is only exemplary of the present application and is not intended to limit the scope of the present application, which is defined by the appended claims.
Claims (10)
1. An oil well working fluid level automatic monitoring system, characterized by, includes:
the working fluid level monitoring device for oil well comprises
The outer part of one side of the explosion-proof box body is provided with a switching cavity, and the oil well casing joint is detachably connected with the switching cavity and is communicated with the oil well casing in an annular mode;
the sound source generating unit is arranged inside the explosion-proof box body and comprises a built-in air chamber, a pressure sensor and an electromagnetic valve, a first opening of the built-in air chamber is connected with a first port of a one-way tee through a relief control valve, a second port of the one-way tee is connected with a high-pressure gas device outside the explosion-proof box body, and a third port of the one-way tee is connected with the atmosphere outside the explosion-proof box body; the second opening of the built-in air chamber is connected with the oil well casing annulus through the electromagnetic valve;
the control unit comprises a data processor, a microphone and a power supply, wherein the data processor is electrically connected with the power supply, the pressure sensor, the air release control valve, the electromagnetic valve and the microphone;
the remote control end is in signal transmission with the control unit through a network and is used for calculating and processing the received signals;
the remote application terminal is used for remotely controlling the automatic oil well working fluid level monitoring device through the remote control end;
the oil well working fluid level monitoring device is characterized in that the sound source generating unit of the oil well working fluid level monitoring device sends sound waves along the annular propagation of an oil well casing, the sound waves generate reflection echoes through barriers, the reflection echoes are received by the microphone and converted into electric signals, the electric signals are analyzed and processed by the data processor and then transmitted to the remote control end for calculation, and the remote application terminal receives results and data curves obtained by the remote control end.
2. The automatic monitoring system of claim 1, further comprising a solar panel disposed on a top of the explosion-proof enclosure for generating electricity from solar energy.
3. The automatic monitoring system of claim 1, wherein the data processor has a built-in SD card.
4. The automatic monitoring system of claim 1, wherein the data processor is provided with data interfaces of RS232, RS485, CAN, Zigbee, Ethernet, WIFI.
5. The automated monitoring system of claim 1, wherein the high pressure gas device is a high pressure nitrogen tank.
6. The automated monitoring system of claim 1, further comprising an antenna disposed external to the data processor.
7. The automated monitoring system of claim 1, further comprising a handle disposed on the explosion-proof enclosure.
8. The automated monitoring system of claim 1, further comprising a heating module disposed within the explosion-proof enclosure, the heating module being electrically connected to the data processor.
9. The automated monitoring system of claim 1, wherein the well casing joint is threadably connected to the adaptor cavity.
10. The automatic monitoring system of claim 1, wherein the network is a GPRS extranet or an RTU intranet.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115749747A (en) * | 2022-11-16 | 2023-03-07 | 四川轻化工大学 | Self-adaptive variable-frequency real-time underground working fluid level monitoring device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115749747A (en) * | 2022-11-16 | 2023-03-07 | 四川轻化工大学 | Self-adaptive variable-frequency real-time underground working fluid level monitoring device and method |
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