Device, method and system for measuring performance of clay stabilizer

Abstract

The invention discloses a clay stabilizer performance measuring device, a measuring method and a measuring system thereof, and the measuring method comprises the following steps: simulating temperature and pressure conditions in a stratum state to reproduce a rock core fracturing and breaking state; in the environment, the clay stabilizer solution is driven by the constant flow pump to pass through the flow guide chamber, the change of the flow conductivity and the turbidity value is calculated according to monitored data, and the clay expansion and migration inhibiting capacity of the stabilizer is evaluated. The method effectively solves the problem that the clay stabilizer cannot directly evaluate the performance excellence of expansion prevention and migration of the original rock core, and meanwhile, the simulation condition is closer to the real stratum state, so that the evaluation result is more authentic and accurate. Therefore, the effects of different types of acid fracturing clay stabilizers are accurately evaluated, and a powerful judgment basis is provided for compatibility of different types of reservoirs with appropriate clay stabilizers.

Description

Technical Field

[0001] The present invention relates to the technical field of oil production engineering, and in particular to a clay stabilizer performance measurement device and a measurement method and system thereof. Background Art

[0002] Hydraulic fracturing technology plays a crucial role in unconventional oil and gas development. Fracturing fluid, the key working fluid for fracking reformation, has a direct impact on fracturing effectiveness. Fracturing fluid is a heterogeneous, stable chemical system composed of a variety of additives mixed in specific proportions. Its core function is to effectively transmit the high pressure generated by surface equipment to the formation, creating fractures and transporting proppant along these fractures, thereby increasing oil and gas penetration and flow. Among the many additives in fracturing fluid, clay stabilizers are particularly critical. They firmly adhere to the clay surface, effectively preventing the expansion and dispersion of water-sensitive minerals due to hydration, thereby protecting the oil and gas reservoirs from damage.

[0003] However, there are some limitations in the evaluation methods of clay stabilizers for acid fracturing. Existing technologies mainly evaluate their performance through methods such as anti-swelling rate determination, mudstone loss rate and core flow test. Among them, the anti-swelling rate determination often uses the centrifugation method and the dilatometer method, but these methods are mainly performed on sodium bentonite and do not directly reflect the actual performance of the core of the target layer of fracturing. Although the mudstone loss rate determination is targeted at mudstone, it lacks wide applicability and is not suitable for all types of cores. The core flow test is carried out under simulated formation temperature conditions, and the effect is evaluated by comparing the permeability change rate of the core before and after the clay stabilizer solution. However, due to the extremely low permeability of cores such as tight oil and shale oil, it is difficult for the clay stabilizer solution to pass through completely, resulting in frequent failure of the test and lack of practical operability.

[0004] Therefore, a clay stabilizer performance measurement device and a measurement method and system are needed to evaluate the excellent performance of the clay stabilizer in the target fracturing layer. Summary of the Invention

[0005] The embodiments of the present invention provide a clay stabilizer performance measurement device and a measurement method and system thereof, which at least partially solve the technical problems that existing methods are not applicable to all cores and the core flow test has poor operability, and realize the evaluation of the anti-swelling and anti-migration effects of different types of clay stabilizers.

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

[0007] In a first aspect, the present invention discloses a clay stabilizer performance measurement device, comprising:

[0008] A water container, a constant-speed horizontal flow pump, a piston syringe, a core particle diversion chamber, and a measuring cup are connected in sequence; the constant-speed horizontal flow pump drives the power liquid in the water container into the piston syringe, and injects the stabilizer in the piston syringe into the core particle diversion chamber; the measuring cup is used to collect the discharge from the core particle diversion chamber;

[0009] The core particle diversion chamber is used to place core particles;

[0010] The core particle diversion chamber is provided in a pressure device, and the pressure device is used to apply a confining pressure to the core particle diversion chamber; the temperature in the core particle diversion chamber is controlled by a temperature control device;

[0011] The core particle diversion chamber is provided with a differential pressure sensor and a flow meter. The differential pressure sensor is used to detect the differential pressure data at both ends of the core particle diversion chamber, and the flow meter is used to detect the flow data at the output end of the core particle diversion chamber.

[0012] The flow meter and the differential pressure sensor are respectively connected to a processing terminal. The processing terminal substitutes the acquired flow data and differential pressure data into a preset formula to obtain the flow diversion data of the stabilizer, and evaluates the stabilizer based on the flow diversion data.

[0013] Optionally, both ends of the core particle diversion chamber are provided with stop valves, and the core particles are immersed by controlling the flow of fluid in the core particle diversion chamber.

[0014] Optionally, the liquid inlet and outlet holes in the core particle guide chamber are provided with detachable filter screens to prevent the core particles from clogging the channels.

[0015] Optionally, the piston syringe is made of 4Cr13 stainless steel to ensure the safety of the experiment.

[0016] In a second aspect, the present invention discloses a method for measuring the performance of a clay stabilizer, which is applied to the clay stabilizer performance measuring device of the first aspect, comprising:

[0017] According to the experimental requirements, core particles of corresponding particle size are selected and placed in the core particle diversion chamber;

[0018] Controlling the constant speed horizontal flow pump to drive the power liquid in the water container into the piston injector, and the piston injector injecting the stabilizer into the core particle diversion chamber at a preset flow rate to achieve a displacement operation;

[0019] Controlling the temperature control device to heat the core particle diversion chamber to the formation temperature and maintain a constant temperature;

[0020] Controlling the pressurizing device to apply a preset confining pressure to the core particle diversion chamber and maintain a constant pressure;

[0021] When the stabilizer flows out of the core particle diversion chamber, the displacement operation is stopped, and the core particles are soaked in the stabilizer for a preset time;

[0022] After the soaking is completed, the displacement operation is continued when a preset volume of solution is collected in the measuring cup. At the same time, the differential pressure sensor and the flow meter are used to obtain differential pressure data and flow rate data during the experiment and send them to the data processing terminal.

[0023] The processing terminal substitutes the flow rate data and the differential pressure data into a preset formula to obtain flow diversion data of the stabilizer, and evaluates the stabilizer based on the flow diversion data.

[0024] Optionally, the step of injecting the stabilizer into the core particle diversion chamber at a preset flow rate by the piston injector specifically includes:

[0025] A first valve is provided between the piston syringe and the core particle diversion chamber, and the first valve is set to a closed state before the experiment begins;

[0026] When the power liquid enters the piston injector and the piston injector reaches a preset pressure, the first valve is opened to inject the stabilizer into the core particle diversion chamber at a preset flow rate.

[0027] Optionally, the step of stopping the displacement operation specifically includes:

[0028] The first valve and the second valve at the output end of the core particle diversion chamber are closed to stop displacement.

[0029] Optionally, after substituting the preset formula to obtain the diversion data of the stabilizer, the method further includes:

[0030] Place the solution in the measuring cup in a turbidity meter to measure and obtain turbidity data;

[0031] The above stabilizers are evaluated based on the turbidity data and diversion data, and target stabilizers that meet the indicators are selected based on the evaluation results.

[0032] Optionally, the power liquid is deionized water to extend the service life of the equipment.

[0033] In a third aspect, the present invention discloses a clay stabilizer performance measurement system, which is applied to the clay stabilizer performance measurement device of the first aspect, comprising:

[0034] The injection module is used to select core particles of corresponding particle size according to experimental requirements and place them in the core particle diversion chamber; control the constant speed horizontal flow pump to drive the power liquid in the water container into the piston syringe, and the piston syringe injects the stabilizer into the core particle diversion chamber at a preset flow rate to achieve a displacement operation;

[0035] A temperature control module is used to control the temperature control device to heat the core particle diversion chamber to the formation temperature and maintain a constant temperature;

[0036] A pressure control module, used to control the pressurizing device to apply a preset confining pressure to the core particle diversion chamber and maintain a constant pressure;

[0037] a soaking module, configured to stop the displacement operation when the stabilizer flows out of the core particle diversion chamber, and soak the core particles in the stabilizer for a preset time;

[0038] a data collection module configured to continue the displacement operation after the soaking is completed, with the predetermined volume of solution collected in the measuring cup as the termination condition; and simultaneously acquire differential pressure data and flow rate data during the experiment using the differential pressure sensor and the flow meter, and transmit the data to the data processing terminal;

[0039] A calculation module is used for the processing terminal to substitute the flow data and the differential pressure data into a preset formula to obtain the diversion data of the stabilizer, and evaluate the stabilizer based on the diversion data.

[0040] In a fourth aspect, the present invention discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps corresponding to the method described in the first aspect.

[0041] One or more technical solutions provided in the present invention have at least the following technical effects or advantages:

[0042] The technical solution of this invention recreates the core fracture state by simulating the temperature and pressure conditions of the formation. In this environment, a clay stabilizer solution, driven by a constant flow pump, is passed through a diversion chamber, and changes in conductivity and turbidity are calculated based on the monitored data. This effectively solves the problem of directly evaluating the clay stabilizer's ability to prevent swelling and migration in the original core. Furthermore, the simulated conditions more closely resemble actual formation conditions, making the evaluation results more realistic and accurate. This allows for precise evaluation of the effectiveness of different types of clay stabilizers for acid fracturing and provides a powerful basis for determining the appropriate clay stabilizer for different reservoir types. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 A schematic structural diagram of a clay stabilizer performance measurement device provided by the present invention;

[0045] Figure 2 A flow chart of a clay stabilizer performance measurement method provided by the present invention;

[0046] Figure 3 This is a schematic diagram of the structure of a clay stabilizer performance measurement system provided by the present invention.

[0047] Figure numerals: 1. water container; 2. constant speed horizontal flow pump; 3. piston syringe; 4. first valve; 5. core particle diversion chamber; 6. pressurizing device; 7. differential pressure sensor; 8. flow meter; 9. measuring cup; 10. second valve. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0051] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be understood to indicate or imply relative importance.

[0052] It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. Unless there is a conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0053] Example 1:

[0054] In an embodiment of the present invention, there is provided Figure 1 A clay stabilizer performance measuring device is shown, comprising:

[0055] A water container 1, a constant-speed horizontal flow pump 2, a piston syringe 3, a core particle diversion chamber 5, and a measuring cup 9 are connected in sequence; the constant-speed horizontal flow pump 2 drives the power liquid in the water container 1 into the piston syringe 3, and injects the stabilizer in the piston syringe 3 into the core particle diversion chamber 5; the measuring cup 9 is used to collect the discharge from the core particle diversion chamber 5; the core particle diversion chamber 5 is used to place core particles.

[0056] The deionized water container 1 is connected to a constant-speed horizontal flow pump 2, which provides variable flow rate power for the experiment. The constant-speed horizontal flow pump 2 can stably provide power output at flow rates of 0.5ml / min, 1.5ml / min, 3ml / min, 5ml / min, and 10ml / min under a certain output pressure.

[0057] The core particle diversion chamber 5 is equipped with stop valves at both ends. By controlling the flow of fluid in the core particle diversion chamber 5, that is, closing the stop valves at both ends, the core particles can be immersed. At the same time, if any problems arise in the experiment, the stop valves can be used to close them in time, improving safety.

[0058] The inlet and outlet of the core particle diversion chamber 5 are equipped with removable filters to prevent core particles from clogging the channels. Specifically, the inlet and outlet holes at each end of the core particle diversion chamber 5 are equipped with removable filters with a mesh size of 200 to prevent core particles from clogging the channels. The inlet and outlet ends of the core particle diversion chamber 5 are connected to electronic differential pressure sensors 7, which measure differential pressures in the range of 0-300 kPa.

[0059] The piston syringe 3 is made of 4Cr13 stainless steel, which has the ability to resist chemical corrosion such as acid resistance, alkali resistance, and salt resistance, and can withstand strong pressure, thereby ensuring the safety of the experiment.

[0060] The core particle diversion chamber 5 is provided in a pressurizing device 6, which is used to apply a confining pressure to the core particle diversion chamber 5; the core particle diversion chamber 5 is controlled by a temperature control device to control the temperature inside the core particle diversion chamber 5;

[0061] The temperature control device can be a temperature control box or a heating wire. The difference between the two is that the core particle diversion chamber 5 is set in the temperature control box, while the heating wire needs to be set in the core particle diversion chamber 5. At the same time, the two can also be used together, using the heating wire for heating and the temperature control box to maintain a constant temperature.

[0062] The core particle diversion chamber 5 is equipped with a differential pressure sensor 7 and a flow meter 8. The differential pressure sensor 7 is used to detect the differential pressure data at both ends of the core particle diversion chamber 5, and the flow meter 8 is used to detect the flow rate data at the output end of the core particle diversion chamber 5. The flow meter 8 and differential pressure sensor 7 are respectively connected to the processing terminal, which substitutes the acquired flow rate data and differential pressure data into a preset formula to obtain the stabilizer diversion data.

[0063] It should be noted that the calculation of conductivity requires the consideration of the pipe's inner diameter, length, fluid properties (including physical properties such as density and viscosity), flow rate, and inlet and outlet pressure differentials. Since these parameters are fixed, only the flow rate and inlet and outlet pressure differentials need to be measured. Within the processing terminal, a calculation program is set up according to the conductivity calculation formula, and the acquired flow rate and differential pressure data are input to obtain the desired conductivity value. The discharge from the measuring cup 9 can also be used for turbidity detection, thereby simulating the core fracture state.

[0064] In the embodiments of the present invention, a constant-speed horizontal flow pump 2 and a piston injector 3 are used to ensure uniform injection of the stabilizer, while the shut-off valve design of the core particle diversion chamber 5 improves operational safety. The use of a stainless steel piston injector 3 and a removable filter enhances the durability and ease of maintenance of the equipment. Data collected by the electronic differential pressure sensor 7 and flowmeter 8, combined with calculations at the processing terminal, quickly and accurately determines the stabilizer's diffusivity. Furthermore, the discharge from the measuring cup 9 can be used for turbidity testing, further testing the clay stabilizer's ability to prevent migration and providing an accurate basis for evaluating the stabilizer's effectiveness.

[0065] Example 2:

[0066] In an embodiment of the present invention, there is provided Figure 2A clay stabilizer performance measurement method shown is applied to the simulation device in Example 1. The method includes steps S101 to S103:

[0067] S101 , according to experimental requirements, core particles of corresponding particle sizes are selected and placed in the core particle guide chamber 5 .

[0068] Specifically, the cores were pre-processed. The experimental core samples were split and crushed into particles with a hammer. These particles were then screened through API standard sieves with mesh sizes of 20-40, 40-70, and 70-140 to produce core particles with diameters of 0.825-0.425mm, 0.425-0.212mm, and 0.212-0.106mm, respectively. Core particles of appropriate sizes were then selected based on the proppant size of the single-well fracturing design and placed in the core particle diversion chamber 5, with the amount of particles placed exceeding the inlet and outlet of the core particle diversion chamber 5 by 5mm.

[0069] S102, controlling the constant speed horizontal flow pump 2 to drive the power liquid in the water container 1 into the piston injector 3, and the piston injector 3 injects the stabilizer into the core particle diversion chamber 5 at a preset flow rate to achieve the displacement operation.

[0070] Specifically, the constant-speed advection pump 2 is turned on. A first valve 4 is installed between the piston injector 3 and the core particle diversion chamber 5 to control the flow of the fluid. This valve 4 is closed before the experiment begins. Once the power fluid enters the piston injector 3 and reaches a preset pressure, the valve 4 is opened to continuously inject the stabilizer into the core particle diversion chamber 5 at a preset flow rate.

[0071] S103, controlling the temperature control device to heat the core particle diversion chamber 5 to the formation temperature and maintain a constant temperature.

[0072] S104: Control the pressurizing device 6 to apply a preset confining pressure to the core particle diversion chamber 5 and maintain a constant pressure. Specifically, the confining pressure is calculated based on the designed fracturing depth, and the pressurizing device 6 pumps the pressure to the calculated pressure value, and then maintains the pressure constant.

[0073] S105: When the stabilizer flows out of the core particle diversion chamber 5, the displacement operation is stopped, and the core particles are soaked in the stabilizer for a predetermined time. The step of stopping the displacement operation can be achieved by closing the first valve 4 and the second valve 10 at the output end of the core particle diversion chamber 5.

[0074] S106, after the soaking is completed, the displacement operation is continued when the preset volume of solution is collected in the measuring cup 9; at the same time, the differential pressure sensor 7 and the flow meter 8 are used to obtain the differential pressure data and flow data in the experiment and send them to the data processing terminal.

[0075] S107: The processing terminal substitutes the flow rate data and differential pressure data into a preset formula to obtain the stabilizer's conductivity data, and evaluates the stabilizer based on the conductivity data. The specific calculation of the conductivity value is a well-known technique and will not be described here. However, the evaluation based on conductivity is based on the rate of change of the core particle conductivity. The change rate formula is:

[0076]

[0077] Wherein, Δkw is the change rate of core particle conductivity, %; kw1 is the conductivity value after the core particles are soaked in water, um 2 cm; kw2 is the conductivity value of the core particles after soaking in clay stabilizer solution, um 2 cm.

[0078] The evaluation indicators are shown in Table 1:

[0079] Conductivity change rate (Δkw), % Inhibiting clay expansion Δkw>65 Strong inhibition 30<Δkw≤65 inhibition 5<Δkw≤30 Weak inhibition Δkw≤5 No inhibition

[0080] Table 1

[0081] S108, placing the solution in the measuring cup 9 in a turbidity meter to measure and obtain turbidity data. Evaluate the stabilizer based on the turbidity data and the diversion data, and select a target stabilizer that meets the requirements based on the evaluation results.

[0082] Among them, the evaluation based on turbidity data is based on the turbidity change rate of the post-fracture breaking fluid of the core particles. The change rate formula is:

[0083]

[0084] Wherein, ΔZD is the turbidity change rate of the fracturing fluid after passing through the core particles, unit: %; ZD1 is the turbidity value after the core particles are soaked in water, unit: NTU; ZD2 is the turbidity value after the core particles are soaked in clay stabilizer solution, unit: NTU.

[0085] The evaluation indicators are shown in Table 2:

[0086]

[0087]

[0088] Table 2

[0089] Tables 1 and 2 show that the rate of change in core particle conductivity reflects the clay stabilizer's ability to inhibit clay expansion, while the rate of change in the turbidity of the core particle post-fracture fluid reflects its ability to prevent clay migration. Therefore, based on these corresponding indicators, suitable clay stabilizers for acid fracturing were screened.

[0090] Furthermore, deionized water is used as the power liquid because deionized water has been specially treated to remove most of the ions and impurities. Using deionized water as the power liquid is mainly to protect the constant flow pump and piston syringe, avoid scaling, blockage and corrosion inside the constant flow pump pipeline and piston syringe, and extend the service life of the system equipment.

[0091] In the embodiment of the present invention, a constant-speed horizontal flow pump 2 and a piston injector 3 are used to inject stabilizer into the core particle diversion chamber 5, achieving contact between the liquid and the core. Simultaneously, a temperature control and pressurization device 6 ensures that the experimental conditions are consistent with the formation environment, improving the practical applicability of the experiment. During the experiment, the ability of the stabilizer to inhibit clay expansion and migration was comprehensively evaluated by measuring the conductivity and turbidity change rate, providing a scientific basis for screening efficient and stable clay stabilizers for acid fracturing. Deionized water was used as the power fluid to fully protect the experimental equipment and enable the entire measurement device to be reused multiple times.

[0092] Example 3:

[0093] Based on the same inventive concept, an embodiment of the present invention provides a clay stabilizer performance measurement system, such as Figure 3 Shown, including:

[0094] The injection module is used to select core particles of corresponding particle size according to experimental requirements and place them in the core particle diversion chamber 5; control the constant speed horizontal flow pump 2 to drive the power liquid in the water container 1 into the piston injector 3, and the piston injector 3 injects the stabilizer into the core particle diversion chamber 5 at a preset flow rate to achieve the displacement operation;

[0095] The temperature control module is used to control the temperature control device to heat the core particle diversion chamber 5 to the formation temperature and maintain a constant temperature;

[0096] The pressure control module is used to control the pressurizing device 6 to apply a preset confining pressure to the core particle diversion chamber 5 and maintain a constant pressure;

[0097] A soaking module is used to stop the displacement operation when the stabilizer flows out of the core particle diversion chamber 5 and soak the core particles in the stabilizer for a preset time;

[0098] The data collection module is used to continue the displacement operation after the immersion is completed, when the preset volume of solution is collected in the measuring cup 9. At the same time, the differential pressure sensor 7 and the flow meter 8 are used to obtain the differential pressure data and flow rate data during the experiment and send them to the data processing terminal.

[0099] The flow diversion data calculation module is used to process the flow data and differential pressure data of the terminal, substitute them into the preset formula to obtain the flow diversion data of the stabilizer, and evaluate the stabilizer based on the flow diversion data.

[0100] The turbidity data calculation module is used to place the solution in the measuring cup 9 in a turbidity meter to measure and obtain turbidity data. The stabilizer is evaluated based on the turbidity data and the diversion data, and the target stabilizer that meets the indicators is selected based on the evaluation results.

[0101] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0102] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0103] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A clay stabilizer performance measurement device, characterized in that: The device comprises: A water container, a constant-speed advection pump, a piston syringe, a core particle diversion chamber, and a measuring cup are sequentially connected; the constant-speed advection pump drives the power liquid in the water container into the piston syringe, and injects the stabilizer in the piston syringe into the core particle diversion chamber; the measuring cup is used to collect the discharge from the core particle diversion chamber; The core particle diversion chamber is used to place core particles; The core particle diversion chamber is arranged in a pressurizing device, and the pressurizing device is used to apply confining pressure to the core particle diversion chamber; the core particle diversion chamber is controlled by a temperature control device to control the temperature in the core particle diversion chamber; The core particle diversion chamber is provided with a differential pressure sensor and a flow meter, wherein the differential pressure sensor is used to detect differential pressure data at both ends of the core particle diversion chamber, and the flow meter is used to detect flow data at the output end of the core particle diversion chamber; The flow meter and the differential pressure sensor are respectively connected to a processing terminal, and the processing terminal substitutes the acquired flow data and the differential pressure data into a preset formula to obtain the diversion data of the stabilizer.

2. The device according to claim 1, wherein Both ends of the core particle diversion chamber are provided with stop valves, and the core particles are soaked by controlling the flow of fluid in the core particle diversion chamber.

3. The device according to any one of claims 1 to 2, characterized in that The liquid inlet and outlet holes in the core particle flow guide chamber are provided with detachable filter screens to prevent the core particles from blocking the channels.

4. The device according to claim 1, wherein The piston syringe is made of 4Cr13 stainless steel to ensure the safety of the experiment.

5. A method for measuring the performance of a clay stabilizer, characterized in that: Applied to the clay stabilizer performance measuring device according to any one of claims 1 to 4, the method comprises: According to the experimental requirements, core particles of corresponding particle size are selected and placed in the core particle diversion chamber; Controlling the constant speed horizontal flow pump to drive the power liquid in the water container into the piston injector, and the piston injector injecting the stabilizer into the core particle diversion chamber at a preset flow rate to achieve a displacement operation; Controlling the temperature control device to heat the core particle diversion chamber to the formation temperature and maintain a constant temperature; Controlling the pressurizing device to apply a preset confining pressure to the core particle diversion chamber and maintain a constant pressure; When the stabilizer flows out of the core particle diversion chamber, the displacement operation is stopped, and the core particles are soaked in the stabilizer for a preset time; After the soaking is completed, the displacement operation is continued with the preset volume of solution collected in the measuring cup as the end condition; at the same time, the differential pressure data and flow rate data in the experiment are obtained by using the differential pressure sensor and the flow meter, and sent to the data processing terminal; The processing terminal substitutes the flow data and the differential pressure data into a preset formula to obtain flow diversion data of the stabilizer, and evaluates the stabilizer based on the flow diversion data.

6. The method according to claim 5, wherein The step of injecting the stabilizer into the core particle diversion chamber at a preset flow rate by the piston injector specifically includes: A first valve is provided between the piston syringe and the core particle diversion chamber, and the first valve is set to a closed state before the experiment begins; When the power fluid enters the piston injector and the piston injector reaches a preset pressure, the first valve is opened to inject the stabilizer into the core particle diversion chamber at a preset flow rate.

7. The method according to claim 6, wherein The step of stopping the displacement operation specifically includes: The first valve and the second valve at the output end of the core particle diversion chamber are closed to stop displacement.

8. The method according to claim 5, wherein After substituting the preset formula to obtain the diversion data of the stabilizer, the method further includes: Place the solution in the measuring cup in a turbidity meter to measure and obtain turbidity data; The stabilizer is evaluated according to the turbidity data and the diversion data, and a target stabilizer that meets the indicators is screened according to the evaluation results.

9. The method according to any one of claims 5 to 8, wherein: The power liquid adopts deionized water to extend the service life of the equipment.

10. A clay stabilizer performance measurement system, characterized in that: The clay stabilizer performance measuring device according to any one of claims 1 to 4, wherein the system comprises: The injection module is used to select core particles of corresponding particle sizes according to experimental requirements and place them in the core particle diversion chamber; control the constant speed horizontal flow pump to drive the power liquid in the water container into the piston injector, and the piston injector injects the stabilizer into the core particle diversion chamber at a preset flow rate to achieve a displacement operation; A temperature control module, used to control the temperature control device to heat the core particle diversion chamber to the formation temperature and maintain a constant temperature; a pressure control module, configured to control the pressurizing device to apply a preset confining pressure to the core particle diversion chamber and maintain a constant pressure; a soaking module, configured to stop the displacement operation and soak the core particles in the stabilizer for a preset time when the stabilizer flows out of the core particle diversion chamber; a data collection module, configured to continue the displacement operation after the soaking is completed, taking the collection of a preset volume of solution in the measuring cup as an end condition; and simultaneously obtain differential pressure data and flow rate data during the experiment using the differential pressure sensor and the flow meter, and transmit the data to the data processing terminal; A calculation module is used for the processing terminal to substitute the flow data and the differential pressure data into a preset formula to obtain the diversion data of the stabilizer, and evaluate the stabilizer based on the diversion data.

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