Device for measuring acid rock reaction kinetics and flow conductivity parameters

Abstract

The utility model relates to the field of petroleum engineering, and discloses an acid rock reaction kinetics and flow conductivity parameter measuring device which comprises a first acid storage tank, a booster pump, a high-pressure gas storage tank, a pressure regulator, a high-temperature and high-pressure reaction kettle, a rock plate reaction kettle, a second acid storage tank, a sample collecting tank, a waste liquid tank and a liquid collecting tank which are sequentially connected through a pipeline, the acid liquor is input into the high-temperature and high-pressure reaction kettle after being regulated by the pressure regulator, is fully mixed with the additive and then enters the rock plate reaction kettle to be subjected to acid-rock reaction with the experimental rock plate, and the rock plate reaction kettle is subjected to water injection pressurization and confining pressure control through the pressure applying device. According to the utility model, two experiments of acid rock reaction kinetics and flow conductivity are combined to simulate the reaction speed of the acid rock under the conditions of different temperatures and pressures and different acid liquid viscosities, so that the mass loss caused by rotation of a rock plate is avoided, the influence of insufficient stirring on an experiment result under high-viscosity liquid is overcome, and the experiment efficiency is improved. And the accuracy of a measurement result is improved.

Description

Technical Field

[0001] The utility model relates to the field of petroleum engineering, in particular to a device for measuring acid-rock reaction dynamics and conductivity parameters in acid fracturing and production enhancement in petroleum engineering. Background Art

[0002] The oil and gas stored in carbonate reservoirs account for nearly 60% of the world's remaining oil and gas, showing huge potential for exploration and development. Generally speaking, carbonate reservoirs have the characteristics of high temperature, low porosity, and low permeability, which are attributed to the deep slurry, density, and strong heterogeneity of the rock. Therefore, acid fracturing is one of the common methods for carbonate reservoir reconstruction. Its acid fracturing effect depends on the conductivity and effective length of the acid-etched fractures. For the length of the acid-etched fracture, it is most critical to depend on the acid-rock reaction rate and kinetic parameters. For the conductivity of the acid-etched fracture, the key depends on the permeability of the acid-etched fracture.

[0003] For carbonate rocks, how to accurately measure the acid-rock reaction rate, kinetic parameters and permeability. Due to the different rock types and components of different oil field reservoirs, the minerals participating in the chemical reaction are also different, and the types of acid used in different reservoirs are also different. Therefore, the experimental results are quite different and irregular.

[0004] Therefore, in order to accurately obtain the acid-rock reaction rate and kinetic parameters, it is necessary to measure them through indoor experiments. Only after the acid-rock reaction rate, kinetic parameters and permeability are determined can the effective action distance and conductivity of the acid liquid be determined, thereby predicting the effect of acid fracturing and production enhancement.

[0005] The existing Chinese patent with announcement number CN101699282B provides a device for measuring the kinetic parameters of acid-rock reaction in acid systems with different viscosities. The device consists of a reactor, two sets of different types of clamps, several power devices rotating toward the reactor body, and several simple testing equipment. During the test, the solution in the reactor is stirred, and the acid flows along the wall of the reactor body and passes through the surface of the rock plate fixed by the clamps on both sides of the reactor body to react with the rock; at the other end of the reactor body, or at the pressure relief port at the bottom of the reactor body, the ion content of the acid is tested, and the kinetic parameters of the acid-rock reaction are determined.

[0006] The shortcomings of this technology are: the experimental operation is relatively complicated, the workload is large, and the sampling points for analyzing the acid ion concentration are limited by the uniformity of the liquid in the kettle, so the obtained acid-rock reaction kinetic parameters have certain errors; at the same time, the acid-rock reaction is a reaction under high temperature and high pressure conditions, and the removal of the acid will pose a safety hazard. During the experiment, the temperature and pressure in the reactor fluctuate as the acid-rock reaction proceeds. Even if the reagents are sampled continuously in the same reactor for multiple times, their reaction conditions may not be exactly the same, which will inevitably reduce the accuracy of the experimentally measured kinetic parameters. In addition, the effect of the acid also requires the flow conductivity to be reflected, and this device has certain limitations. Summary of the invention

[0007] In order to overcome or alleviate the technical problem of inaccurate results caused by acid viscosity and manual operation in the prior art, the utility model aims to provide a device for measuring acid-rock reaction kinetics and conductivity parameters. The measuring process of the device is an integrated acid fracturing effect measuring method, which can truly simulate the chemical reaction between high-viscosity acid and rock during the construction process, accurately calculate the experimental results, and to a certain extent, save experimental time and improve efficiency.

[0008] The utility model provides the following technical solutions:

[0009] A device for measuring acid-rock reaction kinetics and conductivity parameters, characterized in that it comprises a first acid storage tank (1), a booster pump (4), a high-pressure gas storage tank (5), a pressure regulator (6), a high-temperature and high-pressure reactor (11), a rock plate reactor (12), a second acid storage tank (10), a sample collection tank (15), a waste liquid tank (16) and a liquid collection tank, which are connected in sequence through pipelines, wherein the high-temperature and high-pressure reactor (11) is externally provided with an electric heating device (25); the first acid storage tank (1) is used to store the acid solution used in the experiment, and the high-pressure gas storage tank (5) is used to store the acid solution used in the experiment through the booster pump (4). If high pressure is required, the acid liquid is regulated by the pressure regulator (6) and then input into the high-temperature and high-pressure reactor (11). After being fully mixed with the auxiliary agent, it enters the rock plate reactor (12) to react with the experimental rock plate for acid-rock reaction. The rock plate reactor (12) is pressurized by water injection and the confining pressure is controlled by a pressure device. The second acid storage tank (10) is connected to the output end of the rock plate reactor (12) through a flow regulating valve, and is used to store the acid liquid flowing out of the rock plate reactor (12); the waste liquid tank (16) is used to store waste acid; water is collected by the liquid collection tank and metered after collection.

[0010] According to some embodiments, the liquid outlet of the high-temperature and high-pressure reactor (11) is input from the input end of the three-way valve (9), and after being output from one of the output ends of the three-way valve (9), it is connected to the horizontal flow pump (13) and another liquid storage tank, and the other output end is connected to the input end of the rock plate reactor (12).

[0011] According to some embodiments, a stirring device is provided in the high-temperature and high-pressure reactor (11), a liquid inlet valve (26) is provided at the liquid inlet end, and a liquid outlet valve (27) is provided at the liquid outlet end, and the liquid outlet valve (27) is connected to the input end of the three-way valve (9).

[0012] According to some embodiments, the pressure-applying device of the rock plate reactor (12) includes a platform for clamping the rock plate, a hydraulic press for injecting water and pressurizing the rock plate in the platform, a pressure sensor (23) for respectively detecting the pressure values ​​at the liquid inlet and liquid outlet of the rock plate reactor, a confining pressure pump (21) for applying confining pressure to the rock plate reactor (12), a second pressure gauge (22) for displaying the pipeline pressure at the liquid inlet end of the rock plate reactor, and a control host, and the control host is electrically connected to the pressure sensor (23) and the hydraulic press, respectively.

[0013] According to some embodiments, the control host is electrically connected to the electric heating device (25).

[0014] According to some embodiments, a differential pressure sensor (17) for measuring the differential pressure between the inlet and outlet ends of the rock plate reactor (12) is provided between the inlet and outlet ends, and the control host is electrically connected to the differential pressure sensor (17).

[0015] According to some embodiments, a nitrogen bottle (2) is provided on the pipeline between the first acid storage tank (1) and the booster pump (4); the booster pump (4) is connected to the pipeline via a booster container (3), and a pressure regulating valve is provided between the booster container (3) and the high-pressure gas storage tank (5); and a pressure regulating valve is provided on the pipeline between the high-pressure gas storage tank (5) and the pressure regulator (6).

[0016] According to some embodiments, a pressure relief valve is provided on the pipeline at the rear end of the pressure regulator (6) and on the output pipeline of the rock plate reactor (12).

[0017] According to some embodiments, a safety valve (14) is provided on the pipeline in front of the horizontal flow pump (13).

[0018] According to some embodiments, the second acid storage tank (10), the high-temperature and high-pressure reactor (11), and the rock plate reactor (12) are all equipped with insulation devices.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The device for measuring the acid-rock reaction kinetics and conductivity parameters provided by the utility model can simulate different temperature pressures and different acid viscosity conditions under actual field conditions to conduct experimental projects that can adjust the speed of the acid-rock reaction, thereby avoiding mass loss caused by the rotation of the rock plate, overcoming the influence of insufficient stirring on the experimental results under high viscosity conditions, and improving the accuracy of the measurement results. At the same time, it avoids the safety hazards caused by the removal of the acid under high temperature and high pressure conditions. In order to improve efficiency. The hydraulic press applies an upward force to clamp the rock plate reactor platform in the middle, and applies different formation pressures to it to simulate different pressure conditions, and use the Darcy formula to calculate the conductivity of the acid-etched fracture. At the same time, it reduces the inaccuracy of the conductivity test results caused by the damage caused by artificial etching of the acid. In addition, the horizontal flow pump can be used to clean the entire pipeline and remove impurities adhering to the inner wall of the pipeline.

[0021] The utility model combines two experiments, namely, acid-rock reaction kinetics and conductivity, and is applicable to different acid solutions such as high-viscosity gelling acid, low-viscosity gelling acid, solid autogenous acid, etc. The measuring device is simple and orderly, and the experimental operation is reduced during the experiment, which reduces the work intensity of the experimenters.

[0022] By adopting the experimental device provided by the utility model, it is safer to take acid during the experiment; the experimental process is consistent with the actual acidification process; the experimental process is complete and continuous, and an integrated acid pipeline is formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a device for measuring acid-rock reaction kinetics and conductivity parameters provided in an embodiment of the utility model.

[0024] Figure 2 A schematic diagram of a high-temperature and high-pressure reactor provided in an embodiment of the utility model.

[0025] Figure 3 A schematic diagram of a rock plate reactor provided in an embodiment of the utility model.

[0026] In the figure:

[0027] 1. The first acid storage tank; 2. Nitrogen cylinder; 3. Pressurization container; 4. Booster pump; 5. High-pressure gas storage tank; 6. Pressure regulator; 7. The first pressure gauge; 8. Flow regulating valve; 9. Three-way valve; 10. The second acid storage tank; 11. High-temperature and high-pressure reactor; 12. Rock plate reactor; 13. Horizontal pump; 14. Safety valve; 15. Sample collection tank; 16. Waste liquid treatment tank; 17. Differential pressure sensor; 18. Pressure regulating valve; 19. The first pressure relief valve; 20. The second pressure relief valve; 21. Confining pressure pump; 22. The second pressure gauge; 23. Pressure sensor; 24. Insulation layer; 25. Electric heating device; 26. Liquid inlet valve; 27. Liquid outlet valve; 28. Agitator; 29. ​​Stirring blade. DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with the embodiments and drawings, but it should be understood that the embodiments and drawings are only used to exemplify the present invention and do not constitute any limitation on the protection scope of the present invention. All reasonable changes and combinations within the scope of the utility model's purpose fall within the protection scope of the present invention.

[0029] The utility model is further described below in conjunction with the accompanying drawings.

[0030] Example 1

[0031] like Figure 1As shown, this embodiment provides a device for measuring acid-rock reaction kinetics and conductivity parameters, including a first acid storage tank 1, a booster pump 4, a high-pressure gas storage tank 5, a pressure regulator 6, a first pressure gauge 7, a high-temperature and high-pressure reactor 11, a rock plate reactor 12, a second acid storage tank 10, a sample collection tank 15, a waste liquid tank 16 and a liquid collection tank, which are sequentially connected through pipelines. The liquid collection device includes a tray balance with a beaker; the first acid storage tank 1 is used to store the configured acid solution, such as high-viscosity gelling acid, low Viscose gelled acid or solid autogenous acid, etc., the booster pump 4 is connected to the pipeline through the booster container 3, a nitrogen bottle 2 is provided on the pipeline between the first acid storage tank 1 and the booster container 3, and a valve is provided on the pipeline between the nitrogen bottle 2 and the booster container 3. The nitrogen in the nitrogen bottle 2 is used to push the acid liquid remaining in the pipeline and the rock plate reactor 12 after the experiment is completed to the waste liquid tank 16, which is conducive to reducing the corrosion of the acid liquid to the device. A valve is installed between the booster container 3 and the high-pressure gas storage tank 5, which is used to continuously store pressure in the high-pressure gas storage tank 5. A pressure regulator 6 and a first pressure gauge 7 are provided on the pipeline between the high-pressure gas storage tank 5 and the rock plate reactor 12, which are convenient for adjusting the pressure in the experiment and displaying the pressure at the same time. A second acid storage tank 10 connected by a flow regulating valve 8 is provided on the pipeline between the high-temperature and high-pressure reactor 11 and the rock plate reactor 12. The second acid storage tank 10 is used to store and buffer a large amount of acid liquid after the acid-rock reaction during the experiment. Since the acid liquid is still in a high-temperature and high-pressure state, it cannot be directly collected by the waste liquid treatment tank. The flow regulating valve 8 is convenient for controlling the flow rate of the acidic liquid. A stirring device is installed in the high-temperature and high-pressure reactor 11. On the one hand, it can make the high-viscosity liquid evenly distributed, so that the acid-rock reaction is more sufficient and the experimental results are more accurate; on the other hand, for solid autogenous acid, it starts to generate acid when it meets water. In order to improve the accuracy of the results, the solid autogenous acid and auxiliary agents (such as gelling agents, drainage agents, etc.) are placed in the high-temperature and high-pressure reactor 11. The role of the auxiliary agent is to improve and enhance the performance of the acid system and ensure the experimental effect; when the high-temperature and high-pressure reactor 11 is raised to the required temperature, water is pumped into the high-temperature and high-pressure reactor 11 from the acid storage tank. Although the acid reacts with the rock, it is still dangerous. The increase in the acid action distance of the provided device reduces the safety hazards of the device described in the prior art CN101699282B, and greatly reduces the risk of injury to the experimenter.

[0032] At the same time, the rock plate reactor 12 is placed on the platform of the pressure device to apply closing pressure to the two rock plates in the rock plate reactor 12. A pressure gauge 7 is installed at the front end of the liquid inlet of the rock plate reactor 12, and a differential pressure sensor 17 is installed on the inlet and outlet pipelines of the pressure device to maintain the internal and external pressure balance of the rock plate reactor 12. Among them, the acid outlet pipeline and the acid tank 10 and the pipeline behind it are respectively connected to the rear of the three-way valve 9. The acid outlet pipeline is used to clean the pipeline, which is connected to the horizontal flow pump 13 and a bucket filled with water. The experimental device provided in this embodiment can also be used for the determination of flow conductivity under different pressures. After the acid etching of the rock plate, the booster pump 4 is continuously controlled to apply pressure, and the permeability and flow conductivity of the rock plate are calculated by using the Darcy formula through the mass difference of the water driven to the beaker every 30s. After the experiment, the entire pipeline is cleaned by the horizontal flow pump 13 to avoid corrosion of the pipeline by the residual acid liquid, effectively ensuring the long-term use of the device.

[0033] like Figure 3 As shown, the rock plate reactor 12 includes an inner shell, an acid inlet pipeline, an acid outlet pipeline, a rock plate, an insulation layer 24 outside the inner shell, and a pressure device. The pressure device includes a platform for placing the rock plate, a hydraulic press for injecting water and pressurizing the rock plate in the platform, a pressure sensor 23 for detecting the pressure values ​​at the liquid inlet and liquid outlet of the rock plate reactor respectively, a differential pressure sensor 17 for detecting the differential pressure between the inlet and outlet of the rock plate reactor 12, a confining pressure pump 21 for applying confining pressure to the rock plate reactor 12, a second pressure gauge 22 for displaying the pressure of the pipeline at the liquid inlet end of the rock plate reactor, and a control host for controlling the hydraulic press. The rock plate is placed on the platform of the pressure device, and the hydraulic press lifts the platform for placing the rock plate, thereby applying an upward force to pressurize the rock plate. The confining pressure pump 21 applies confining pressure to the rock plate reactor 12, so that the anti-corrosion rubber lining fits the rock plate more closely, and the acid flows through the middle of the two rock plates without overflowing from other places. The output pipeline of the confining pressure pump 21 of the pressure-applying device is connected to the rock plate reactor 12, and the rock plate reactor 12 is connected to the acid inlet and outlet pipelines by threads, which is convenient for the placement of the rock plate, the disassembly of the rock plate reactor 12, and the cleaning of the rock plate reactor 12. At the same time, when the rock plate is placed in the detachable rock plate reactor 12, iron wire is used to keep a certain distance between the two rock plates so that the acid can flow. A hydraulic press is provided on the upper part of the rock plate reactor 12, and a pressure sensor 23 is connected between the acid inlet pipeline and the hydraulic press. When the acid-rock reaction and the rock plate reactor 12 are pressurized to increase the pressure between the two rock plates, the upper and lower forces are applied to maintain the balance of internal and external pressures to avoid excessive pressure causing the rock plate to rupture. The control host is electrically connected to the hydraulic press, the pressure sensor 23 and the electric heating device 25. The control host receives the pressure values ​​and the pressure difference at the liquid inlet and outlet ends of the rock plate reactor transmitted by the pressure sensor 23 and the differential pressure sensor 17, pressurizes the pressure inside the rock plate reactor 12 in the experiment, and controls the heating inside the high-temperature and high-pressure reactor 11 and the rock plate reactor 12 by controlling the electric heating device 25.

[0034] like Figure 2 The acid liquid enters the high-temperature and high-pressure reactor 11 through the liquid inlet valve 26, and the stirrer 28 drives the stirring blade 29 to stir through the belt, so that the high-viscosity acid liquid in the high-temperature and high-pressure reactor 11 is mixed evenly. The high-temperature and high-pressure reactor 11 is composed of Hastelloy alloy and has excellent anti-corrosion performance. The evenly mixed acid liquid flows out through the liquid outlet valve 27 and enters the reactor where the rock plate is placed. The acid-rock reaction kinetics experiment is carried out, which can simulate the process of injecting acid liquid into the formation on site and realize acid fracturing.

[0035] like Figure 1 , Figure 3 As shown in the figure, the acid inlet pipeline and the acid outlet pipeline of the rock plate reactor 12 are respectively connected to the high temperature and high pressure reactor 11 and the second acid storage tank 10, so that the acid liquid flows to avoid the core quality loss caused by the core rotation. At the same time, the acid liquid is continuously stirred and flows, so that the high viscosity liquid can completely contact the rock plate, solving the problem of H in the acid liquid. + The problem of uneven distribution improves the accuracy of the experimental measurement results. The rock plate is more in line with the actual working conditions on site. When the acid is injected into the formation, the high-temperature and high-pressure reactor 11 needs to be connected to the electric heating device 25 to ensure that the acid is under different temperature pressures and different acid concentrations to explore the speed of the acid-rock reaction. At the same time, the second acid storage tank 10, the high-temperature and high-pressure reactor 11, and the rock plate reactor 12 are all equipped with insulation devices to reduce heat loss. A safety valve 14 is provided on the pipeline in front of the horizontal flow pump 13 to play a safety protection role in the system. When the system pressure exceeds the specified value, the safety valve 14 will open and discharge part of the gas / fluid in the system to the outside of the pipeline, thereby ensuring that the system will not cause safety accidents due to excessive pressure.

[0036] A specific experimental process is as follows:

[0037] Put the prepared acid into the first acid storage tank 1, and put two pieces of dolomite 176.44mm×35.92mm×24.15mm (length×width×height) or limestone 176.44mm×35.92mm×24.15mm (length×width×height) into the rock plate reactor 12, install the rock plate reactor 12, and apply confining pressure through the pipeline behind the rock plate reactor 12, that is, wrap the periphery of the rock in the rock reactor, and make the wrapped rock tighter by injecting water and pressurizing it to prevent the liquid from flowing out to the periphery, maintain 10~12MPa, so that the rock plate is tightly wrapped, and maintain a certain gap between the two rock plates to ensure that the acid can flow smoothly to simulate acid corrosion cracks. Since the acid-rock reaction will generate a certain pressure, an upper and lower force is applied to the upper part of the rock plate reactor 12 to maintain pressure balance. The high-temperature and high-pressure reactor 11 is heated to a predetermined temperature, and the stirred heated acid liquid is pressurized from the acid storage tank 1 through the nitrogen bottle 2, and the acid liquid is pushed through the pipeline to open the liquid inlet valve 26 to enter the high-temperature and high-pressure reactor 11. At the same time, the booster pump 4 is operated to repeatedly pressurize and store the gas in the high-pressure gas storage tank 5 to make it stored to the pressure required for the experiment, which is generally 2 to 4 MPa greater than the pressure required for the experiment. The pressure regulating valve 18 is opened, and the pressure entering the rock plate reactor 12 is controlled by the pressure regulator 6, and it is injected into the high-temperature and high-pressure reactor 11. The liquid outlet valve 27 is opened to start the experiment. The liquid outlet valve 27 is opened, and the flow regulating valve 8 is opened at the same time to make the acid liquid flow at a certain flow rate. A pressure sensor 23 is installed on the acid inlet pipeline of the rock plate reactor 12. The valve and the pressure regulator 6 are used to supplement and relieve the pressure of the pipeline, the rock plate reactor 12, etc. during the reaction process to prevent experimental errors.

[0038] After the reaction is finished, open other valves except the valve at the N2 bottle, as well as the first pressure relief valve 19 and the second pressure relief valve 20 to remove the acid and relieve the pressure on the entire device, and remove the remaining acid into the waste liquid treatment tank 16. On the one hand, during the experiment, it is safer to take out the acid, and the experimenter can rest assured to calculate the acid-rock reaction rate based on the acid-base titration reaction from the sample collection tank 15. Put the prepared equal amounts of acid solutions of different concentrations back into the first acid storage tank 1, replace with new rock plates, change the temperature and pressure conditions, repeat the above steps, and conduct several groups of experiments. In this way, the speed of the acid-rock reaction under different temperature and pressure conditions and different concentrations can be observed. On the other hand, the rock plate can be taken out, and the acid-rock reaction rate can be calculated by the mass difference before and after the acid-rock reaction.

[0039] The device is also used to calculate the flow conductivity. The preliminary steps are the same as the above-mentioned acid fracturing reaction kinetics experiment. After the rock plate is acid-etched by acid, the horizontal flow pump 13 is turned on to allow water to enter the rock plate reactor 12 through the pipeline, flow out from the acid outlet pipeline, and enter the beaker. A tray balance is placed at the bottom of the beaker. Samples are taken every 30 seconds. The permeability and flow conductivity of the cracks are calculated by the mass difference of the liquid and the Darcy formula. When the difference between each sampling is less than 10%, the next pressure experiment is carried out, and the rock plate of the rock plate reactor 12 is pressurized by a hydraulic press. The permeability and flow conductivity of the experiment are calculated again, and the pressure is changed to repeat the experiment. The entire experimental device can realize the integration of acid-rock reaction and flow conductivity, save experimental operation time, and avoid artificial damage to the rock plate. At the end of the experiment, all valves are opened, and the pipeline is cleaned by the horizontal flow pump 13 to prevent the experimental instruments from being damaged due to acid etching. At the same time, the purpose of cleaning also includes ensuring the air tightness of the experimental device.

[0040] Example 3

[0041] When only the conductivity of the fracture needs to be tested, it is only necessary to close the inlet valve 26 and the outlet valve 27, place the rock plate in the rock plate reactor 12, apply the squeezing force through the hydraulic press to simulate the closing pressure after the formation fracturing, and then use the booster pump 4 to apply the confining pressure to the periphery of the wrapped rock to ensure that the liquid does not flow outward, thereby achieving the accuracy of the experiment. The required permeability and conductivity are calculated by using the Darcy formula through the mass difference every 30 seconds, as well as parameters such as flow rate.

[0042] The above embodiments are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A device for measuring acid-rock reaction kinetics and conductivity parameters, characterized in that: The invention comprises a first acid storage tank (1), a booster pump (4), a high-pressure gas storage tank (5), a pressure regulator (6), a high-temperature and high-pressure reactor (11), a rock plate reactor (12), a second acid storage tank (10), a sample collection tank (15), a waste liquid tank (16) and a liquid collection tank, which are connected in sequence through pipelines. The high-temperature and high-pressure reactor (11) is provided with an electric heating device (25). The first acid storage tank (1) is used to store acid liquid used in the experiment. The high pressure required for the experiment is stored in the high-pressure gas storage tank (5) through the booster pump (4). The acid liquid is heated by the pressure regulator (25). After adjustment by the device (6), the acid is input into the high-temperature and high-pressure reactor (11), and after being fully mixed with the auxiliary agent, it enters the rock plate reactor (12) to react with the experimental rock plate for acid-rock reaction. The rock plate reactor (12) is pressurized by water injection and controlled by the pressure device. The second acid storage tank (10) is connected to the output end of the rock plate reactor (12) through a flow regulating valve, and is used to store the acid liquid flowing out of the rock plate reactor (12); the waste liquid tank (16) is used to store waste acid; water is collected by the liquid collection tank, and metering is performed after collection.

2. The device for measuring acid-rock reaction kinetics and conductivity parameters according to claim 1, characterized in that: The liquid outlet of the high-temperature and high-pressure reactor (11) is input from the input end of the three-way valve (9), and after being output from one of the output ends of the three-way valve (9), it is connected to the horizontal flow pump (13) and the other liquid storage tank, and the other output end is connected to the input end of the rock plate reactor (12).

3. The device for measuring acid-rock reaction kinetics and conductivity parameters according to claim 2, characterized in that: The high-temperature and high-pressure reactor (11) is provided with a stirring device, and its liquid inlet end is provided with a liquid inlet valve (26), and its liquid outlet end is provided with a liquid outlet valve (27), and the liquid outlet valve (27) is connected to the input end of the three-way valve (9).

4. The device for measuring acid-rock reaction kinetics and conductivity parameters according to claim 1, characterized in that: The pressure-applying device of the rock plate reactor (12) includes a platform for clamping the rock plate, a hydraulic press for injecting water and pressurizing the rock plate in the platform, a pressure sensor (23) for respectively detecting the pressure values ​​at the liquid inlet and liquid outlet of the rock plate reactor, a confining pressure pump (21) for applying confining pressure to the rock plate reactor (12), a second pressure gauge (22) for displaying the pipeline pressure at the liquid inlet end of the rock plate reactor, and a control host, wherein the control host is electrically connected to the pressure sensor (23) and the hydraulic press, respectively.

5. The device for measuring acid-rock reaction kinetics and conductivity parameters according to claim 4, characterized in that: The control host is electrically connected to the electric heating device (25).

6. The device for measuring acid-rock reaction kinetics and conductivity parameters according to claim 5, characterized in that: A differential pressure sensor (17) for measuring the differential pressure between the inlet and outlet ends of the rock plate reactor (12) is provided between the inlet and outlet ends, and the control host is electrically connected to the differential pressure sensor (17).

7. The device for measuring acid-rock reaction kinetics and conductivity parameters according to claim 1, characterized in that: A nitrogen bottle (2) is provided on the pipeline between the first acid storage tank (1) and the booster pump (4); the booster pump (4) is connected to the pipeline via a booster container (3); a pressure regulating valve is provided between the booster container (3) and the high-pressure gas storage tank (5); and a pressure regulating valve is provided on the pipeline between the high-pressure gas storage tank (5) and the pressure regulator (6).

8. The device for measuring acid-rock reaction kinetics and conductivity parameters according to claim 7, characterized in that: Pressure relief valves are provided on the pipeline at the rear end of the pressure regulator (6) and on the output pipeline of the rock plate reactor (12).

9. The device for measuring acid-rock reaction kinetics and conductivity parameters according to claim 2, characterized in that: A safety valve (14) is provided on the pipeline in front of the advection pump (13).

10. The device for measuring acid-rock reaction kinetics and conductivity parameters according to any one of claims 1 to 9, characterized in that: The second acid storage tank (10), the high-temperature and high-pressure reactor (11), and the rock plate reactor (12) are all equipped with insulation devices.

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