Core gas permeability measuring device with auxiliary function

Abstract

The utility model relates to the technical field of core permeability determination, specifically is a kind of core gas phase permeability determination device with auxiliary function, including bearing plate, gas phase permeability determination mechanism, gas conveying mechanism and data display mechanism, the gas phase permeability determination mechanism fixedly connected in the middle portion of bearing plate top portion. In the utility model, through the setting of clamping plate, pressure sensor and heating sleeve, the stable clamping of different size cores is realized, clamping plate is driven under the regulator, can tightly adhere to the surface of core, and three clamping plates are symmetrically arranged in three equal parts, can provide uniform and stable clamping force in the circumferential direction of core, effectively prevent core displacement or shaking in the experimental process, avoid gas leakage or measurement error due to core loosening, pressure sensor real-time monitoring clamping pressure, data is fed back to data terminal controller, the cooperative work of heating sleeve and temperature sensor can accurately simulate formation temperature.

Description

Technical Field

[0001] This utility model relates to the field of core permeability measurement technology, and in particular to a core gas phase permeability measurement device with auxiliary functions. Background Technology

[0002] Permeability is an important indicator for measuring the fluid flow capacity of a core sample. It plays a crucial role in the exploration and development of energy sources such as oil and natural gas, and its value directly affects the production of oil and gas wells.

[0003] When using existing technical solutions, the core holder has poor adaptability to cores of different sizes, making it difficult to hold the cores securely. This causes the cores to shake easily during the experiment, which seriously affects the measurement accuracy and results in a large deviation between the measurement results and the actual formation conditions. To address the aforementioned problems, this invention provides a core gas phase permeability measuring device with auxiliary functions. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the existing technology that the core clamping is unstable, resulting in a large deviation between the measurement results and the actual formation conditions. Therefore, this invention proposes a core gas phase permeability measuring device with auxiliary functions.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a core gas phase permeability measuring device with auxiliary functions, comprising a load-bearing plate, a gas phase permeability measuring mechanism, a gas conveying mechanism, and a data display mechanism, wherein the gas phase permeability measuring mechanism is fixedly connected to the middle of the top of the load-bearing plate, and the gas phase permeability measuring mechanism includes a support plate fixedly connected to the top of the load-bearing plate.

[0006] The gas phase permeability measuring mechanism includes a core clamping assembly and a heating sleeve. The core clamping assembly is fixedly connected to the outer surface of the support plate in three equal parts.

[0007] The gas phase permeability measuring mechanism includes an outer cylinder fixedly connected to the inside of a core clamping assembly, an inner cylinder fixedly connected to the inside of the outer cylinder, a heating sleeve fixedly connected to the inside of the outer cylinder and the inner cylinder, and a fixing ring fixedly connected to the outer surface of the outer cylinder. An adjuster is threadedly connected to the inner wall of the fixing ring, a bearing is rotatably connected to the distal end of the adjuster, a clamping plate is fixedly connected to the outer surface of the bearing, and a pressure sensor is fixedly connected to the outer surface of the clamping plate.

[0008] Furthermore, the bearing is fitted onto the outer surface of the clamping plate, the clamping plate and the pressure sensor are symmetrically arranged inside the fixing ring, and the fixing ring and the clamping plate are arranged at three equal intervals on the outer surface of the outer cylinder.

[0009] Furthermore, a temperature sensor is fixedly connected to the inner wall of the inner cylinder, and a sealing cap is threadedly connected to the top of the outer cylinder and the inner cylinder, with a gas connection port fixedly connected to the top of the sealing cap.

[0010] Furthermore, the gas delivery mechanism includes a protective frame fixedly connected to one side of the top of the load-bearing plate, a gas source tank is snapped into the inside of the protective frame, and a connecting pipe is fixedly connected to the top of the gas source tank.

[0011] Furthermore, a drying filter is fixedly connected to the outer surface of the connecting pipe, a control valve is fixedly connected to the distal end of the connecting pipe, a gas flow meter is fixedly connected to the outer surface of the control valve, and the bottom of the connecting pipe is snapped into the interior of the gas connection port.

[0012] Furthermore, the data display mechanism includes a data connection line fixedly connected to the outer surface of the outer cylinder, and a data terminal controller is fixedly connected to the far end of the data connection line. The data terminal controller is fixedly connected to the other side of the top of the load-bearing plate.

[0013] Furthermore, a stable base plate is fixedly connected to the bottom of the load-bearing plate, and ground connectors are threaded to both sides of the stable base plate. The ground connectors are symmetrically arranged on both sides of the stable base plate.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this invention, the use of clamping plates, pressure sensors, and heating sleeves enables stable clamping of cores of different sizes. Driven by the regulator, the clamping plates fit tightly against the core surface. The three clamping plates are symmetrically arranged in tripartite divisions, providing a uniform and stable clamping force around the core, effectively preventing displacement or shaking during the experiment. This avoids gas leakage or measurement errors caused by core loosening, significantly improving the accuracy of measurement results. The pressure sensor monitors the clamping pressure in real time and feeds the data back to the data terminal controller. The coordinated operation of the heating sleeve and temperature sensor accurately simulates formation temperature. Combined with a stable gas supply, it further simulates the formation pressure environment, making the experimental conditions closer to actual formation conditions, thereby obtaining more realistic and reliable core gas permeability data.

[0015] 2. In this invention, the inclusion of a drying filter, control valve, and gas flow meter effectively ensures the accuracy of gas flow measurement. The drying filter efficiently removes moisture and impurities from the gas, preventing blockage of the core pore structure or alteration of the gas's physical properties, thus guaranteeing the purity of the experimental gas and laying the foundation for precise measurement. The control valve employs a high-precision flow regulation structure, allowing for fine control of gas flow and pressure to meet gas input requirements under different experimental conditions. The gas flow meter is a high-precision mass flow meter, capable of real-time and accurate monitoring of the gas flow through the core, unaffected by temperature and pressure fluctuations. This provides a reliable data source for the accurate calculation of the core gas permeability, effectively improving the accuracy and reliability of the measurement results. Attached Figure Description

[0016] Figure 1 This invention presents a three-dimensional structural schematic diagram of a core gas phase permeability measuring device with auxiliary functions; Figure 2 This invention presents a schematic diagram of the pressure sensor in a core gas phase permeability measuring device with auxiliary functions; Figure 3 This invention proposes a core gas phase permeability measuring device with auxiliary functions. Figure 2 Enlarged view of point A; Figure 4 This invention provides a schematic diagram of the heating sleeve in a core gas phase permeability measuring device with auxiliary functions; Figure 5 This invention provides a schematic diagram of the clamping plate in a core gas phase permeability measuring device with auxiliary functions; Figure 6 This invention proposes a core gas phase permeability measuring device with auxiliary functions. Figure 5 Enlarged diagram of point B.

[0017] Legend: 1. Load-bearing plate; 2. Gas phase permeability measuring mechanism; 21. Support plate; 22. Core clamping assembly; 221. Fixing ring; 222. Regulator; 223. Bearing; 224. Clamping plate; 225. Pressure sensor; 23. Heating sleeve; 24. Outer cylinder; 25. Inner cylinder; 26. Temperature sensor; 27. Sealing cap; 28. Gas connection port; 3. Gas delivery mechanism; 31. Protective frame; 32. Gas source tank; 33. Connecting pipe; 34. Dryer filter; 35. Control valve; 36. Gas flow meter; 4. Data display mechanism; 41. Data connection cable; 42. Data terminal controller; 5. Stabilizing base plate; 6. Ground connection parts. Detailed Implementation

[0018] Please see Figure 1-6 This utility model provides a technical solution: a core gas phase permeability measuring device with auxiliary function, including a load-bearing plate 1, a gas phase permeability measuring mechanism 2, a gas conveying mechanism 3 and a data display mechanism 4. The gas phase permeability measuring mechanism 2 is fixedly connected to the middle of the top of the load-bearing plate 1, and the gas phase permeability measuring mechanism 2 includes a support plate 21 fixedly connected to the top of the load-bearing plate 1.

[0019] The following section will describe in detail the specific setup and function of its gas phase permeability measurement mechanism 2, gas transmission mechanism 3, and data display mechanism 4.

[0020] In this embodiment: the gas phase permeability measuring mechanism 2 includes a core clamping assembly 22 and a heating sleeve 23. The core clamping assembly 22 is fixedly connected to the outer surface of the support plate 21 in three equal parts.

[0021] The gas phase permeability measuring mechanism 2 includes an outer cylinder 24 fixedly connected to the inside of the core clamping assembly 22, an inner cylinder 25 fixedly connected to the inside of the outer cylinder 24, and a heating sleeve 23 fixedly connected to the inside of the outer cylinder 24 and the inner cylinder 25. The core clamping assembly 22 includes a fixing ring 221 fixedly connected to the outer surface of the outer cylinder 24, an adjuster 222 threadedly connected to the inner wall of the fixing ring 221, a bearing 223 rotatably connected to the distal end of the adjuster 222, a clamping plate 224 fixedly connected to the outer surface of the bearing 223, and a pressure sensor 225 fixedly connected to the outer surface of the clamping plate 224.

[0022] The effect achieved by the above components is as follows: the clamping plate 224 can be driven to move radially by the rotary adjuster 222, so as to closely fit the rock cores of different diameters. The clamping plate 224, which is symmetrically distributed in three equal parts, can provide uniform and stable clamping force in the circumference of the rock core, avoid the rock core from shifting or shaking due to uneven force during the experiment, and prevent gas leakage from affecting the measurement results.

[0023] Specifically, the bearing 223 is fitted into the outer surface of the clamping plate 224, the clamping plate 224 and the pressure sensor 225 are symmetrically arranged inside the fixing ring 221, and the fixing ring 221 and the clamping plate 224 are arranged at three equal intervals on the outer surface of the outer cylinder 24.

[0024] The effect achieved by the above components is as follows: the pressure sensor 225 monitors the clamping pressure in real time and feeds the data back to the data terminal controller 42. The experimenter can accurately adjust the clamping pressure according to the core material and characteristics, which not only ensures the clamping effect, but also avoids excessive pressure from damaging the core, and significantly improves the adaptability of the device to different cores and the measurement accuracy.

[0025] Specifically, a temperature sensor 26 is fixedly connected to the inner wall of the inner cylinder 25, and a sealing cap 27 is threadedly connected to the top of the outer cylinder 24 and the inner cylinder 25. A gas connection port 28 is fixedly connected to the top of the sealing cap 27.

[0026] The effects achieved by the above components are as follows: the temperature sensor 26 monitors the temperature around the core in real time and transmits the data to the data terminal controller 42. The controller automatically adjusts the heating power of the heating sleeve 23 according to the preset formation temperature value, so that the core temperature is stable within the set range and accurately simulates the formation temperature environment. The threaded connection design of the sealing cover 27 with the outer cylinder 24 and the inner cylinder 25, together with the sealing ring and other sealing structures, ensures high airtightness inside the device and prevents gas leakage.

[0027] Specifically, the gas supply mechanism 3 includes a protective frame 31 fixedly connected to one side of the top of the load-bearing plate 1, a gas source tank 32 is snapped into the inside of the protective frame 31, and a connecting pipe 33 is fixedly connected to the top of the gas source tank 32.

[0028] The effects achieved by the above components are as follows: the protective frame 31 provides physical protection for the gas source tank 32, preventing it from being damaged by collision during the experiment and reducing the risk of gas leakage; the snap-fit ​​design of the connecting pipe 33 and the gas connection port 28 ensures a tight connection and is easy to disassemble and assemble, ensuring stable gas delivery to the core holder.

[0029] Specifically, a dryer filter 34 is fixedly connected to the outer surface of the connecting pipe 33, a control valve 35 is fixedly connected to the far end of the connecting pipe 33, a gas flow meter 36 is fixedly connected to the outer surface of the control valve 35, and the bottom of the connecting pipe 33 is snapped into the inside of the gas connection port 28.

[0030] The effects achieved by the above components are as follows: the dryer filter 34 has a built-in high-efficiency filter material that can remove moisture, particulate impurities, etc. from the gas, prevent impurities from clogging the core pores or changing the physical properties of the gas, ensure the purity of the experimental gas, and lay the foundation for accurate measurement; the control valve 35 can finely regulate the gas flow and pressure to meet the gas input requirements under different experimental conditions; and the gas flow meter 36 uses a high-precision mass flow meter to monitor the gas flow through the core in real time and accurately, without being affected by temperature and pressure fluctuations.

[0031] Specifically, the data display mechanism 4 includes a data connection line 41 fixedly connected to the outer surface of the outer cylinder 24, and a data terminal controller 42 fixedly connected to the far end of the data connection line 41. The data terminal controller 42 is fixedly connected to the other side of the top of the load-bearing plate 1.

[0032] The above components achieve the following effects: the data connection line 41 uses a high-speed, anti-interference data transmission line to quickly and stably transmit the experimental data collected by the pressure sensor 225, temperature sensor 26, gas flow meter 36 and other devices to the data terminal controller 42. The data terminal controller 42 has a built-in professional data processing algorithm to analyze the collected data in real time.

[0033] Specifically, a stable base plate 5 is fixedly connected to the bottom of the load-bearing plate 1, and ground connectors 6 are threadedly connected to both sides of the stable base plate 5. The ground connectors 6 are symmetrically arranged on both sides of the stable base plate 5.

[0034] The effects achieved by the above components are as follows: the stable base plate 5 increases the contact area between the device and the ground, lowers the center of gravity, and improves the device's anti-overturning ability; the ground connection 6 can be firmly fixed to the ground by means of expansion bolts, etc., to prevent the device from shaking or displacing due to vibration caused by gas flow or external force during the experiment, ensuring the stability of the experimental process, providing a stable equipment foundation for accurate measurement, and ensuring the smooth progress of the experiment.

[0035] Working principle: Before the experiment, the core sample is placed in the inner cylinder 25. The position of the clamping plate 224 is adjusted by the rotary adjuster 222 to stably clamp the core. The pressure sensor 225 provides feedback pressure data to assist in the adjustment. Then, the sealing cap 27 is tightened and sealed with the outer cylinder 24 and the inner cylinder 25. The connecting pipe 33 of the gas supply mechanism 3 is connected to the gas connection port 28. Then, the temperature, gas flow rate and other parameters required for the experiment are preset by the data terminal controller 42.

[0036] During the experiment, the gas source tank 32 releases gas, which is purified by the dryer filter 34, and the flow and pressure are regulated by the control valve 35. The gas is then measured by the gas flow meter 36 and enters the core holder through the gas connection port 28. The heating sleeve 23 heats the core according to the data feedback from the temperature sensor 26 and is controlled by the data terminal controller 42 to simulate the formation temperature.

[0037] During the process of gas flowing through the core, pressure sensor 225 monitors the clamping pressure, temperature sensor 26 monitors the temperature, and gas flow meter 36 monitors the flow rate. The relevant data are transmitted in real time to data terminal controller 42 via data connection line 41.

[0038] The data terminal controller 42 processes the collected data in real time, automatically calculates the gas phase permeability of the core, and displays it in the form of data reports, curves, etc. After the experiment, the gas source and heating system are turned off, the device is disassembled and the core is taken out. The data terminal controller 42 stores the experimental data for subsequent analysis and research.

Claims

1. A core gas phase permeability measuring device with auxiliary function, comprising a bearing plate (1), a gas phase permeability measuring mechanism (2), a gas conveying mechanism (3) and a data display mechanism (4), characterized in that: The gas phase permeability measuring mechanism (2) is fixedly connected to the middle of the top of the load-bearing plate (1), and the gas phase permeability measuring mechanism (2) includes a support plate (21) fixedly connected to the top of the load-bearing plate (1). The gas phase permeability measuring mechanism (2) includes a core clamping assembly (22) and a heating sleeve (23). The core clamping assembly (22) is fixedly connected to the outer surface of the support plate (21) in three equal parts. The gas phase permeability measuring mechanism (2) includes an outer cylinder (24) fixedly connected to the inside of the core clamping assembly (22), an inner cylinder (25) fixedly connected to the inside of the outer cylinder (24), and a heating sleeve (23) fixedly connected to the inside of the outer cylinder (24) and the inner cylinder (25). The core clamping assembly (22) includes a fixing ring (221) fixedly connected to the outer surface of the outer cylinder (24). An adjuster (222) is threadedly connected to the inner wall of the fixing ring (221). A bearing (223) is rotatably connected to the far end of the adjuster (222). A clamping plate (224) is fixedly connected to the outer surface of the bearing (223). A pressure sensor (225) is fixedly connected to the outer surface of the clamping plate (224).

2. The core gas permeability measuring device with auxiliary function according to claim 1, characterized in that: The bearing (223) is fitted into the outer surface of the clamping plate (224). The clamping plate (224) and the pressure sensor (225) are symmetrically arranged inside the fixing ring (221). The fixing ring (221) and the clamping plate (224) are arranged at three equal intervals on the outer surface of the outer cylinder (24).

3. The core gas permeability measuring device with auxiliary function according to claim 1, characterized in that: A temperature sensor (26) is fixedly connected to the inner wall of the inner cylinder (25), and a sealing cap (27) is threadedly connected to the top of the outer cylinder (24) and the inner cylinder (25). A gas connection port (28) is fixedly connected to the top of the sealing cap (27).

4. The core gas permeability measuring device with auxiliary function according to claim 1, characterized in that: The gas delivery mechanism (3) includes a protective frame (31) fixedly connected to one side of the top of the load-bearing plate (1). A gas source tank (32) is snapped into the inside of the protective frame (31), and a connecting pipe (33) is fixedly connected to the top of the gas source tank (32).

5. The core gas permeability measuring device with auxiliary function according to claim 4, characterized in that: A drying filter (34) is fixedly connected to the outer surface of the connecting pipe (33), a control valve (35) is fixedly connected to the far end of the connecting pipe (33), a gas flow meter (36) is fixedly connected to the outer surface of the control valve (35), and the bottom of the connecting pipe (33) is snapped into the inside of the gas connection port (28).

6. The core gas permeability measuring device with auxiliary function according to claim 5, characterized in that: The data display mechanism (4) includes a data connection line (41) fixedly connected to the outer surface of the outer cylinder (24), and a data terminal controller (42) is fixedly connected to the far end of the data connection line (41). The data terminal controller (42) is fixedly connected to the other side of the top of the load-bearing plate (1).

7. The core gas permeability measuring device with auxiliary function according to claim 1, characterized in that: The bottom of the load-bearing plate (1) is fixedly connected to a stable base plate (5), and the two sides of the stable base plate (5) are threadedly connected to ground connectors (6), which are symmetrically arranged on both sides of the stable base plate (5).

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