Automatic coal bed gas well testing parameter testing system based on infrared technology

Abstract

The utility model discloses a coalbed methane well testing parameter automatic testing system based on an infrared technology, which comprises a water tank and a water pipe connected with the water tank, and further comprises an infrared controller, an infrared data collector, an infrared data transmitter, a power system, a mobile phone and an anti-seismic engineering machine. According to the utility model, a data reading interval can be set according to requirements, and parameter data can be read with high precision; flow and pressure change curves can be drawn in real time according to input parameter data, so that field staff can visually observe the parameter change trend and analyze and adjust the real-time data of the test at the first time; meanwhile, compared with a traditional well testing technology, the application range of the system is greatly expanded, labor force can be saved, cost can be reduced, the well testing technological process is simplified, and operation is safe, efficient, easy and convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of reservoir parameter measurement in coalbed methane exploration and development, and relates to an automatic testing system for coalbed methane well testing parameters based on infrared technology, specifically a system for real-time monitoring and recording of flow, pressure and temperature parameters during the coalbed methane well testing process. Background Art

[0002] Currently, coalbed methane (CBM) well testing is a process for obtaining CBM evaluation parameters, providing a scientific basis for CBM well exploration, development, and productivity evaluation. Commonly used CBM well testing methods at home and abroad include DST testing, slug testing, injection / pressure drop testing, water tank testing, interference testing, and fluid diagnostic testing. CBM well testing, based on seepage mechanics theory and using various test instruments, studies the various physical parameters of oil, gas, and water layers and test wells, production capacity, and connectivity between these layers by testing the production dynamics of oil and gas wells, CBM wells, or water wells.

[0003] Regardless of the well testing method, a certain amount of fluid is injected or withdrawn into the reservoir through a borehole, causing a pressure transient in the reservoir. By recording the pressure change over time, various reservoir parameters can be calculated using seepage theory. Pressure transient testing can provide important data such as permeability and reservoir pressure, which are used to evaluate the production potential, recovery rate, and economic feasibility of coalbed methane wells. It can also be used to estimate the fracture length and conductivity of hydraulically fractured wells.

[0004] Deficiencies at the current stage: 1. The original manual records are subject to large human errors and the test accuracy is insufficient; due to the long recording time, the errors in the recorded data are large; 2. Since the parameters of the coal reservoir are low permeability and low pressure, the current test equipment is not accurate enough for low flow and low pressure, resulting in large errors; 3. The traditional well testing process is relatively complicated and the test accuracy is insufficient. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic testing system for coalbed methane well test parameters based on infrared technology to solve the problems of poor accuracy, low efficiency, and complicated process flow of well test parameter data. The utility model system can set the data reading interval according to demand and read parameter data with high precision; it can draw flow and pressure change curves in real time based on the input parameter data, so that on-site staff can intuitively observe the parameter change trend and analyze and adjust the real-time test data in the first time. At the same time, the scope of application of this system is greatly expanded compared with traditional well testing technology, which can save labor and reduce costs, simplify the well testing process, and be safe, efficient and easy to operate.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An automatic testing system for coalbed methane well test parameters based on infrared technology includes a water tank and a water pipe connected thereto, and also includes:

[0008] The infrared controller is used to monitor and control the flow rate of the fluid in the water pipe. It can adjust the flow rate of the fluid according to the infrared signal of the earthquake-resistant engineering machine. Through real-time monitoring and feedback, it ensures that the fluid flow rate remains within the set range. By adjusting the flow rate, the injection pressure is controlled.

[0009] Infrared data collector, used to collect changes in fluid flow rate in water pipes; the minimum rated data collection interval is not less than 100 groups / s;

[0010] Infrared data transmitter, used to transmit the flow rate of the fluid in the water pipe recorded by the infrared data collector;

[0011] Power system, including generator and high-pressure pump, used to provide power required for coalbed methane well testing;

[0012] Mobile phone, used to receive real-time data from infrared data transmitter;

[0013] The earthquake-resistant engineering machine is used to receive real-time data from the infrared data transmitter, set the data collection interval and frequency, display the parameter data of the test process in real time, draw curves, and store and copy data.

[0014] The utility model also includes the following technical features:

[0015] Specifically, the infrared controller includes a first infrared controller and a second infrared controller; the infrared data collector includes a first infrared data collector and a second infrared data collector; and the infrared data transmitter includes a first infrared data transmitter and a second infrared data transmitter.

[0016] Specifically, the first infrared controller, the first infrared data collector and the first infrared data transmitter constitute a first infrared unit; the second infrared controller, the second infrared data collector and the second infrared data transmitter constitute a second infrared unit.

[0017] Specifically, the first infrared unit, the power system, and the second infrared unit are arranged on the water pipe in sequence, and the first infrared unit is arranged close to the water tank.

[0018] Specifically, the first infrared unit and the second infrared unit transmit optical signals with the mobile phone and the earthquake-resistant engineering machine.

[0019] Specifically, the first infrared controller, the first infrared data collector, the first infrared data transmitter, the second infrared controller, the second infrared data collector, and the second infrared data transmitter are electrically connected.

[0020] Specifically, the first infrared controller is installed on the side facing the water inlet channel, the first infrared data transmitter is installed on the side facing the water outlet channel, and the first infrared data collector is installed between the first infrared controller and the first infrared data transmitter.

[0021] Specifically, the second infrared controller is installed on the side facing the water inlet channel, the second infrared data transmitter is installed on the side facing the water outlet channel, and the second infrared data collector is installed between the second infrared controller and the second infrared data transmitter.

[0022] Compared with the prior art, the present invention has the following technical effects:

[0023] This utility model uses infrared technology to automatically test well test parameters with high precision. The automatic well test parameter testing system includes a water tank, infrared controller, infrared data collector, infrared data transmitter, power system, and data receiver. Well test data is transmitted to the infrared controller and infrared data collector in real time and at high frequency, bidirectionally. A mobile phone and a seismic-resistant industrial computer calculate dynamic changes in well test pressure, flow rate, and other parameters. This system effectively improves the accuracy and frequency of coalbed methane well testing.

[0024] 2. The utility model system can optimize the process flow of traditional well testing, reduce the cumbersome coalbed methane well testing procedures, and optimize the coalbed methane well testing process flow with the real-time data of the well testing system, avoiding changes in some processes of the coalbed methane well testing.

[0025] 3. The utility model realizes automatic testing of well test parameters, simplifies the process, reduces tedious manpower work, and the system is portable and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the automatic testing system for coalbed methane well testing parameters based on infrared technology in this utility model.

[0027] The meaning of each number in the figure is:

[0028] 1. Water tank, 2. First infrared unit, 3. Water pipe, 4. Power system, 5. Second infrared unit, 6. Mobile phone, 7. Earthquake-resistant engineering machine; 2-1. First infrared controller, 2-2. First infrared data collector, 2-3. First infrared data transmitter, 5-1. Second infrared controller, 5-2. Second infrared data collector, 5-3. Second infrared data transmitter. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made on the basis of the technical solution of this application fall within the scope of protection of the present invention.

[0030] Example:

[0031] like Figure 1 As shown, this embodiment provides an automatic testing system for coalbed methane well testing parameters based on infrared technology, including a water tank 1 and a water pipe 3 connected thereto, and further comprising:

[0032] The infrared controller is used to monitor and control the flow rate of the fluid in the water pipe 3 through infrared technology. When the liquid flow rate needs to be adjusted, the infrared controller can adjust the opening degree of the valve according to the infrared signal received from the mobile phone 6 or the earthquake-resistant engineering machine 7, thereby controlling the flow rate of the fluid. Through real-time monitoring and feedback, it ensures that the fluid flow rate remains within the set range, and controls the injection pressure by adjusting the flow rate;

[0033] Infrared data collector, used to collect the flow rate change of the fluid in the water pipe 3 and calculate the fluid change amount with an accuracy of 0.1%; the minimum rated data collection interval is not less than 100 groups / s, and it is used for real-time data collection of flow, pressure, and temperature;

[0034] Infrared data transmitter, used to transmit the flow rate of the fluid in the water pipe 3 recorded by the infrared data collector;

[0035] Power system 4, including a generator and a high-pressure pump, for providing power required for coalbed methane well testing;

[0036] Mobile phone 6, used for receiving real-time data from the infrared data transmitter;

[0037] The earthquake-resistant engineering machine 7 is used to receive real-time data from the infrared data transmitter, set the data collection interval and frequency, display the parameter data of the test process in real time, draw curves, and store and copy data.

[0038] The infrared controller includes a first infrared controller 2-1 and a second infrared controller 5-1; the infrared data collector includes a first infrared data collector 2-2 and a second infrared data collector 5-2; and the infrared data transmitter includes a first infrared data transmitter 2-3 and a second infrared data transmitter 5-3.

[0039] The first infrared controller 2-1, the first infrared data collector 2-2 and the first infrared data transmitter 2-3 constitute the first infrared unit 2; the second infrared controller 5-1, the second infrared data collector 5-2 and the second infrared data transmitter 5-3 constitute the second infrared unit 5.

[0040] The first infrared unit 2 , the power system 4 , and the second infrared unit 5 are sequentially arranged on the water pipe 3 , and the first infrared unit 2 is arranged close to the water tank 1 .

[0041] The first infrared unit 2 and the second infrared unit 5 transmit optical signals to the mobile phone 6 and the earthquake-resistant engineering machine 7 .

[0042] The first infrared controller 2-1, the first infrared data collector 2-2, the first infrared data transmitter 2-3, the second infrared controller 5-1, the second infrared data collector 5-2, and the second infrared data transmitter 5-3 are electrically connected.

[0043] The first infrared controller 2-1 is installed on the side facing the water inlet channel, the first infrared data transmitter 2-3 is installed on the side facing the water outlet channel, and the first infrared data collector 2-2 is installed between the first infrared controller 2-1 and the first infrared data transmitter 2-3.

[0044] The second infrared controller 5-1 is installed on the side facing the water inlet channel, the second infrared data transmitter 5-3 is installed on the side facing the water outlet channel, and the second infrared data collector 5-2 is installed between the second infrared controller 5-1 and the second infrared data transmitter 5-3.

[0045] The mobile phone 6 and the earthquake-resistant engineering machine 7 are mobile phones or earthquake-resistant engineering machines with infrared functions.

[0046] The basic working principle of this utility model is as follows:

[0047] Connect water tank 1 to first infrared unit 2, which is connected to power system 4 via water pipe 3. The power system is connected to second infrared unit 5 via water pipe 3. Fill the water tank with test water. Transmit optical signals from first and second infrared units 2 and 5 to mobile phone 6 and earthquake-resistant engineering computer 7. Enter the data collection interval on mobile phone 6 or earthquake-resistant industrial computer 7 and begin well testing. Use mobile phone 6 and earthquake-resistant industrial computer 7 to set the parameter data recording frequency for first infrared controller 2-1 of first infrared unit 2 and second infrared controller 5-1 of second infrared unit 5, respectively, and control the on / off of first and second infrared units 2 and 5. The water flow in the water pipe 3 is controlled by the first infrared controller 2-1 of the first infrared unit 2 and the infrared controller 5-1 of the second infrared unit 5. The first infrared data collector 2-2 of the first infrared unit 2 and the second data collector 5-2 of the second infrared unit 5 read the fluid change data according to the set acquisition frequency, and the first infrared data transmitter 2-3 and the second infrared data transmitter 5-3 transmit the data to the mobile phone 6 and the seismic engineering machine 7. The mobile phone 6 and the seismic engineering machine 7 synchronously draw a real-time flow curve and display it on the monitor in real time. Based on the observed real-time parameter curves of the first infrared unit 2 and the second infrared unit 5 and referring to the well test design, the on-site technicians adjust the parameters of the infrared controller 2-1 of the first infrared unit 2 and the second infrared controller 5-1 of the second infrared unit 5 in the water pipe 3 through the mobile phone 6 and the seismic engineering machine 7 to improve the accuracy of the well test results.

[0048] The following further describes the testing process of this embodiment in steps.

[0049] The specific implementation process of this embodiment includes the following steps:

[0050] Step 1: Conduct performance tests on test infrared equipment, instruments, pressure gauges, etc., and use them only after passing the test; inspect and maintain the test equipment; organize construction and related collaborative personnel, explain test precautions and divide the work to ensure the smooth progress of the test.

[0051] Step 2: According to the actual geological conditions of the coalbed methane parameter test well and the thickness of the reservoir, adjust the displacement, observe the changes and sensitivity of the various test parameters of the infrared automatic system, and check whether the automatic system is normal.

[0052] Step 3: Select the appropriate displacement for injection, and keep the injection displacement as stable as possible. After the test fluid has been injected into the reservoir for a period of time, the automatic system will dynamically record and analyze the pressure and displacement of the test process according to the well test parameters. The data processing module will analyze the received data and further feedback to the data control module. According to the instructions of the data processing module, data will be collected again. During the test, the data will be analyzed and adjusted in real time to determine the data collection instructions suitable for the reservoir parameters.

[0053] Step 4: After the test fluid is stabilized, the basic parameters of the stable automatic system well test are determined. During the well test, the automatic system will store and analyze the data of the entire well test process.

[0054] Step 5: After the well test is completed, the high-precision CBM pressure gauge is removed. All data stored in the automatic system is verified with the data from the downhole high-precision pressure gauge. By analyzing this data and using professional pressure analysis software, the basic parameters of the reservoir can be obtained.

[0055] Step 6: Follow the basic steps of the time test to complete the entire process of the well test automatic system test. After the well test is completed, the original records are copied to a personal computer for later data analysis and preparation of results reports.

[0056] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0057] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0058] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An automatic testing system for coalbed methane well testing parameters based on infrared technology, characterized in that: It comprises a water tank (1) and a water pipe (3) connected thereto, and also comprises: An infrared controller is used to monitor and control the flow rate of the fluid in the water pipe (3). The infrared controller can adjust the flow rate of the fluid according to the infrared signal of the earthquake-resistant engineering machine (7). Through real-time monitoring and feedback, the flow rate of the fluid is ensured to be kept within the set range. The injection pressure is controlled by adjusting the flow rate. An infrared data collector for collecting changes in the flow rate of the fluid in the water pipe (3); the minimum rated data collection interval is not less than 100 groups / s; An infrared data transmitter for transmitting the flow rate of the fluid in the water pipe (3) recorded by the infrared data collector; A power system (4), including a generator and a high-pressure pump, for providing power required for coalbed methane well testing; A mobile phone (6) for receiving real-time data from the infrared data transmitter; The earthquake-resistant engineering machine (7) is used for receiving real-time data from the infrared data transmitter, setting the data acquisition interval and acquisition frequency, displaying parameter data of the test process in real time, drawing curves, and storing and copying data.

2. The automatic testing system for coalbed methane well testing parameters based on infrared technology according to claim 1, characterized in that: The infrared controller comprises a first infrared controller (2-1) and a second infrared controller (5-1); the infrared data collector comprises a first infrared data collector (2-2) and a second infrared data collector (5-2); and the infrared data transmitter comprises a first infrared data transmitter (2-3) and a second infrared data transmitter (5-3).

3. The automatic testing system for coalbed methane well testing parameters based on infrared technology according to claim 2, characterized in that: The first infrared controller (2-1), the first infrared data collector (2-2) and the first infrared data transmitter (2-3) constitute a first infrared unit (2); the second infrared controller (5-1), the second infrared data collector (5-2) and the second infrared data transmitter (5-3) constitute a second infrared unit (5).

4. The automatic testing system for coalbed methane well testing parameters based on infrared technology according to claim 3, characterized in that: The first infrared unit (2), the power system (4), and the second infrared unit (5) are arranged on the water pipe (3) in sequence, and the first infrared unit (2) is arranged close to the water tank (1).

5. The automatic testing system for coalbed methane well testing parameters based on infrared technology according to claim 3, characterized in that: The first infrared unit (2) and the second infrared unit (5) perform optical signal transmission with the mobile phone (6) and the earthquake-resistant engineering machine (7).

6. The automatic testing system for coalbed methane well testing parameters based on infrared technology according to claim 3, characterized in that: The first infrared controller (2-1), the first infrared data collector (2-2), the first infrared data transmitter (2-3), the second infrared controller (5-1), the second infrared data collector (5-2), and the second infrared data transmitter (5-3) are electrically connected.

7. The automatic testing system for coalbed methane well testing parameters based on infrared technology according to claim 3, characterized in that: The first infrared controller (2-1) is installed on the side facing the water inlet channel, the first infrared data transmitter (2-3) is installed on the side facing the water outlet channel, and the first infrared data collector (2-2) is installed between the first infrared controller (2-1) and the first infrared data transmitter (2-3).

8. The automatic testing system for coalbed methane well testing parameters based on infrared technology according to claim 3, characterized in that: The second infrared controller (5-1) is installed on the side facing the water inlet channel, the second infrared data transmitter (5-3) is installed on the side facing the water outlet channel, and the second infrared data collector (5-2) is installed between the second infrared controller (5-1) and the second infrared data transmitter (5-3).

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