Intelligent underground gas monitoring device

Abstract

The utility model provides an intelligent underground gas monitoring device. A cylindrical pup joint is arranged between two sections of oil pipes and is detachably connected with the oil pipes; the monitoring system comprises a pressure monitoring module, a gas monitoring module, a temperature monitoring module, a flow monitoring module and a ground monitoring terminal which are integrated on the short-circuit side wall, and each monitoring module transmits monitored data signals to the monitoring terminal through a transmission system; the wireless communication module transmits data signals monitored by the monitoring modules to the monitoring terminal; and the repeater is arranged between the wireless communication module and the monitoring terminal and transmits the data signal received by the wireless communication module to the monitoring terminal. Physical and chemical parameters can be measured through the monitoring system, the problem that long-period in-situ monitoring of the underground environment is difficult is solved, monitoring parameters are expanded, errors are effectively avoided, equipment safety and precision are improved, and a three-dimensional comprehensive environment monitoring system is formed. And the method has significant significance on research on burying of complex compounds, oil displacement and safe development.

Description

Technical Field

[0001] The utility model relates to an oil well safety monitoring system for petroleum exploration, in particular to an intelligent underground gas monitoring device. Background Art

[0002] Oil extraction refers to the act of digging and extracting oil from where it is stored. In the process of oil extraction, oil and gas flow from the reservoir to the bottom of the well and then rise from the bottom of the well to the wellhead.

[0003] During the oil extraction process, the gas conditions in the oil wells need to be monitored in real time to ensure the safety of the oil wells. However, the existing oil well monitoring system monitors fewer items, lacks effective monitoring of the underground comprehensive environment, and lacks reasonable monitoring devices, which reduces the practicability of the monitoring system. Moreover, during the operation of the system, the staff needs to monitor the system remotely to ensure the reliability of the system monitoring. However, due to the short communication distance of the existing wireless communication circuit and the fact that the oil wells are generally several thousand meters deep, the communication signal is very unstable, which reduces the practicability of the system.

[0004] In summary, there is an urgent need to design an intelligent underground gas monitoring device that overcomes the above-mentioned problems.

[0005] Monitoring devices are respectively set up in the underground soil layer and the produced oil and gas layer; monitoring units are set up on the ground to monitor atmospheric data, surface soil data and output gas data; three-dimensional monitoring of the atmosphere, soil layer, produced oil and gas layer and bottom hole data can be realized simultaneously, and multiple measuring instruments for measurable physical parameters and chemical parameters are integrated together through the monitoring unit, which not only solves the difficulty of long-term in-situ monitoring of the underground environment, but also expands the monitoring parameters and effectively avoids measurement errors. Measurement errors improve the safety and accuracy of the equipment, forming a three-dimensional comprehensive environmental monitoring system, which is of remarkable significance for the study of the storage, oil recovery and safe development of complex compounds such as CO2 and nitrogen. Utility Model Content

[0006] The utility model aims to provide an intelligent underground gas monitoring device which overcomes the above problems.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is: an intelligent underground gas monitoring device, comprising:

[0008] A cylindrical shorting connection, which is disposed between two sections of oil pipe and is detachably connected to the oil pipe;

[0009] A monitoring system, comprising a pressure monitoring module, a gas monitoring module, a temperature monitoring module and a flow monitoring module integrated in the groove of the short-circuit side wall and a monitoring terminal arranged on the ground, wherein the pressure monitoring module, the gas monitoring module, the temperature monitoring module and the flow monitoring module transmit the monitored data signals to the monitoring terminal through a transmission system;

[0010] Wherein, the transmission system comprises a wireless communication module arranged in the groove, and the wireless communication module transmits the data signals monitored by each monitoring module to the monitoring terminal;

[0011] It also includes a repeater, which is arranged between the wireless communication module and the monitoring terminal, and the repeater is separately arranged in the other short-circuited groove. The repeater can transmit the data signal received by the wireless communication module to the monitoring terminal.

[0012] The purpose of the utility model and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0013] Furthermore, a plurality of the repeaters may be evenly arranged according to the bottom hole depth.

[0014] Furthermore, inner walls at both ends of the short circuit are respectively provided with internal threads, and the end of the oil pipe is provided with external threads matching the internal threads.

[0015] Furthermore, the groove is arc-shaped and an arc-shaped sealing cover is welded on the outer side thereof, and a sealing inspection cover is provided on the arc-shaped sealing cover.

[0016] Furthermore, it also includes a power supply module arranged in the short circuit;

[0017] The power module includes an oscillation generator and a battery arranged in the groove. The oscillation generator can convert the kinetic energy generated by the up and down movement of the sucker rod into electrical energy and store it in the battery. The battery is electrically connected to each module.

[0018] Furthermore, the battery in the short circuit where the repeater is located is electrically connected to the repeater.

[0019] Furthermore, two ends of the short circuit are also provided with power-carrying contacts, and the battery is electrically connected to various electronic components through the power-carrying contacts.

[0020] Furthermore, a signal device is also provided in the groove, which has receiving, transmitting and storing functions, and the signal device is respectively connected to each electronic component in the short circuit where it is located.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. The utility model is an intelligent downhole gas monitoring device, which can monitor the pressure, gas composition and concentration, temperature and flow rate in the well by setting a short circuit detachably connected to the oil pipe, and setting a pressure monitoring module, a gas monitoring module, a temperature monitoring module and a flow monitoring module on the side wall of the short circuit, and transmit the monitored data to the monitoring terminal on the ground in real time through the wireless communication module, so as to monitor the downhole comprehensive environment, which not only solves the difficulty of long-term in-situ monitoring of the downhole environment, but also expands the monitoring parameters to form a three-dimensional comprehensive environment monitoring system, which has significant significance for studying the storage, oil displacement and safe development of complex compounds such as CO2 and nitrogen;

[0023] 2. The utility model is an intelligent underground gas monitoring device, which solves the problem that the oil well is too deep and the existing wireless communication circuit has a short communication distance and the signal cannot be effectively transmitted by separately setting a repeater in another short circuit and setting the short circuit with the repeater between the wireless communication module and the monitoring terminal, thereby improving the practicality of the monitoring device and also improving the safety and accuracy of the equipment;

[0024] 3. The utility model is an intelligent underground gas monitoring device, which sets an oscillation generator and a battery in the short circuit. The oscillation generator can convert the kinetic energy generated by the up and down movement of the sucker rod into electrical energy and store it in the battery, thereby providing electrical energy for each module, solving the problem of power supply difficulties underground and greatly improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a usage status diagram of the intelligent underground gas monitoring device provided by the utility model;

[0026] Figure 2 It is a schematic cross-sectional structure diagram of a short circuit of a monitoring system and a transmission system provided in the utility model;

[0027] Figure 3 It is a cross-sectional structural diagram of a short circuit provided with a repeater in the utility model;

[0028] Figure 4 It is a principle block diagram of the utility model;

[0029] Description of reference numerals: 1, short circuit; 11, groove; 12, internal thread; 13, arc-shaped sealing cover; 14, sealing inspection cover;

[0030] 2. Oil pipeline; 3. Monitoring system; 31. Pressure monitoring module; 32. Gas monitoring module; 33. Temperature monitoring module; 34. Flow monitoring module; 4. Monitoring terminal; 5. Transmission system; 51. Wireless communication module; 6. Repeater; 7. Power supply module; 71. Oscillating generator; 72. Battery; 73. Power contact; 8. Annunciator. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] See also Figures 1 to 4 , an intelligent downhole gas monitoring device, comprising:

[0033] The short circuit 1 is a cylindrical short circuit, which is arranged between two sections of the oil pipe 2 and is detachably connected to the oil pipe 2; the short circuit 1 is in communication with the inside of the oil pipe 2;

[0034] A monitoring system 3, comprising a pressure monitoring module 31, a gas monitoring module 32, a temperature monitoring module 33 and a flow monitoring module 34 integrated in the groove 11 of the side wall of the short circuit 1, and a monitoring terminal 4 arranged on the ground, wherein the pressure monitoring module 31, the gas monitoring module 32, the temperature monitoring module 33 and the flow monitoring module 34 transmit the monitored data signals to the monitoring terminal 4 through the transmission system 5; the pressure monitoring module 31, the gas monitoring module 32, the temperature monitoring module 33 and the flow monitoring module 34 are respectively used to monitor the pressure, gas composition and concentration, temperature and flow rate of the oil-gas mixture in the well, so as to measure the relevant physical and chemical parameters of the bottom of the well;

[0035] The transmission system 5 includes a wireless communication module 51 disposed in the groove 11, and the wireless communication module 51 transmits the data signals monitored by each monitoring module to the monitoring terminal 4; the wireless communication module 51 transmits the data signals such as pressure, gas composition and concentration, temperature and flow parameters of the oil-gas mixture to the monitoring terminal 4 on the ground, so as to realize real-time monitoring of various parameters and ensure the safety of the bottom of the well;

[0036] It also includes a repeater 6, which is arranged between the wireless communication module 51 and the monitoring terminal 4, and the repeater 6 is separately arranged in the groove 11 of another short circuit 1. The repeater 6 can transmit the data signal received by the wireless communication module 51 to the monitoring terminal 4.

[0037] In the present invention, since the oil well is generally several thousand meters deep, and the communication distance of the existing wireless communication circuit is short, and the communication signal is very unstable, a repeater 6 is set between the wireless communication module 51 and the monitoring terminal 4, and the data signal such as the monitoring parameters received by the wireless communication module 51 can be transmitted to the monitoring terminal 4 on the ground through the repeater 6, so as to ensure the effectiveness and consistency of data transmission. It should be noted that there are two types of short circuits 1 in the present invention. One is that each monitoring module and the wireless communication module 51 are set in its groove 11 to form an intelligent monitoring instrument for monitoring and transmitting various parameters. This short circuit 1 can generally be set in the soil layer and the oil and gas layer under the mining well, or set at different positions according to the mining needs, so as to collect parameters of oil wells of different depths; the other is that a repeater 6 is set inside it, which is used to transmit the data signal received by the wireless communication module 51 to the monitoring terminal 4, extend the communication line, and solve the problem that the oil well is too deep and the communication distance of the existing wireless communication circuit is short and the signal cannot be effectively transmitted. This short circuit 1 is set between the first short circuit 1 and the monitoring terminal 4.

[0038] Preferably, a plurality of repeaters 6 can be evenly arranged according to the bottom hole depth. For example, in order to realize real-time transmission of downhole monitoring data, a repeater 6 is arranged within a limited range of wireless transmission (such as every 100 meters) to realize data transmission.

[0039] Preferably, the inner walls of both ends of the short circuit 1 are respectively provided with internal threads 12, and the ends of the oil pipe 2 are provided with external threads matching the internal threads 12. The short circuit 1 is connected between the oil pipes 2 through threads, and the oil pipes 2 are connected to the inside of the short circuit 1 to provide an oil passage;

[0040] In another embodiment, both ends of the short circuit 1 are fixedly connected to the ends of the oil pipe 2 via flanges.

[0041] Preferably, the groove 11 is arc-shaped and an arc-shaped sealing cover 13 is welded on its outer side to prevent the internal electronic components from being exposed in the oil casing and causing the oil-gas mixture to enter the groove 11 and damage the various components. A sealing inspection cover 14 is provided on the arc-shaped sealing cover 13, which, when opened, can facilitate the staff to inspect and replace the internal components.

[0042] Preferably, it also includes a power supply module 7 arranged in the short circuit 1;

[0043] The power module 7 includes an oscillation generator 71 and a battery 72 arranged in the groove 11. The oscillation generator 71 can convert the kinetic energy generated by the up and down movement of the sucker rod into electrical energy and store it in the battery 72. The battery 72 is electrically connected to each module to provide electrical energy for each electronic component to ensure its normal operation.

[0044] Preferably, the battery 72 in the short circuit 1 where the repeater 6 is located is electrically connected to the repeater 6 .

[0045] Preferably, both ends of the short circuit 1 are also provided with power-on contacts 73, and the battery 72 is electrically connected to each electronic component through the power-on contacts 73. The power-on contacts 73 at both ends of the short circuit 1 are used to power on the power module 7, the wireless communication module 51 and each monitoring module, so that each module starts working; or power on the power module 7 and the repeater 6, so that the repeater 6 starts working.

[0046] Preferably, a signal device 8 is further provided in the groove 11, which has the functions of receiving, transmitting and storing, and the signal device 8 is respectively connected to each electronic component in the short circuit 1 where it is located. The signal device 8 can receive, transmit and store the data signals monitored by each monitoring module.

[0047] The present invention is further described above in conjunction with the embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. An intelligent downhole gas monitoring device, characterized in that: It includes: A cylindrical shorting (1) which is arranged between two sections of oil pipe (2) and is detachably connected to the oil pipe (2); A monitoring system (3), comprising a pressure monitoring module (31), a gas monitoring module (32), a temperature monitoring module (33) and a flow monitoring module (34) integrated in the groove (11) of the side wall of the short circuit (1), and a monitoring terminal (4) arranged on the ground, wherein the pressure monitoring module (31), the gas monitoring module (32), the temperature monitoring module (33) and the flow monitoring module (34) transmit the monitored data signals to the monitoring terminal (4) via the transmission system (5); The transmission system (5) comprises a wireless communication module (51) arranged in the groove (11), and the wireless communication module (51) transmits the data signals monitored by each monitoring module to the monitoring terminal (4); It also includes a repeater (6), which is arranged between the wireless communication module (51) and the monitoring terminal (4), and the repeater (6) is independently arranged in the groove (11) of another short circuit (1), and the repeater (6) can transmit the data signal received by the wireless communication module (51) to the monitoring terminal (4).

2. The intelligent downhole gas monitoring device according to claim 1, characterized in that: A plurality of the repeaters (6) can be evenly arranged according to the depth of the well bottom.

3. The intelligent downhole gas monitoring device according to claim 1, characterized in that: The inner walls of both ends of the short circuit (1) are respectively provided with internal threads (12), and the end of the oil pipe (2) is provided with external threads matching the internal threads (12).

4. The intelligent downhole gas monitoring device according to claim 1, characterized in that: The groove (11) is arc-shaped and has an arc-shaped sealing cover (13) welded to its outer side, and a sealing inspection cover (14) is provided on the arc-shaped sealing cover (13).

5. The intelligent downhole gas monitoring device according to claim 1, characterized in that: It also includes a power supply module (7) arranged in the short circuit (1); The power module (7) comprises an oscillation generator (71) and a battery (72) arranged in the groove (11); the oscillation generator (71) can convert kinetic energy generated by the up and down movement of the sucker rod into electrical energy and store it in the battery (72); the battery (72) is electrically connected to each module.

6. The intelligent downhole gas monitoring device according to claim 5, characterized in that: The storage battery (72) in the short circuit (1) where the repeater (6) is located is electrically connected to the repeater (6).

7. The intelligent downhole gas monitoring device according to claim 6, characterized in that: Both ends of the short circuit (1) are also provided with power-carrying contacts (73), and the storage battery (72) is electrically connected to various electronic components via the power-carrying contacts (73).

8. The intelligent downhole gas monitoring device according to claim 1, characterized in that: A signal device (8) is also provided in the groove (11), which has receiving, transmitting and storing functions, and the signal device (8) is respectively connected to each electronic component in the short circuit (1) in which it is located.

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