Novel hydraulic fracturing temporary plugging steering testing device and method

Abstract

The invention discloses a novel hydraulic fracturing temporary plugging steering testing device and method, and belongs to the technical field of hydraulic fracturing. The testing device comprises an injection system, a visual crack dynamic simulation device, a recovery system and a central monitoring system. The central monitoring system comprises a data monitoring system, a temporary plugging agent concentration regulation and control system and an active crack width dynamic regulation and control system, and the active crack width dynamic regulation and control system is connected with the data monitoring system and the visual crack dynamic simulation device. And the simulation device is used for carrying out plane three-dimensional crack propagation numerical simulation and temporary plugging agent particle migration numerical simulation according to the pressure monitoring data, and regulating and controlling the crack width of the visual crack dynamic simulation device according to a simulation result. According to the method, the slit width can be actively and dynamically adjusted according to a numerical simulation result, temporary plugging steering under flowing in multiple directions can be further considered, an experimental result better conforms to an actual working condition, and technical support can be provided for indoor evaluation of a temporary plugging steering effect.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic fracturing, and in particular to a novel hydraulic fracturing temporary plugging and diversion testing device and method. Background Art

[0002] In the development of unconventional oil and gas resources such as shale gas and tight oil, temporary plugging technology is increasingly being used to improve the effect of reservoir transformation. At present, the experimental device for temporary plugging and diversion testing is relatively simple. On the one hand, the fluid in this type of device flows unidirectionally in the fracture, and the diversion flow process of the actual formation fluid is not considered; on the other hand, regarding the influence of fracture width changes on the temporary plugging and diversion effect, the change of fracture width in the current device is passive, and its change is only related to the pressure, closing pressure and simulated Young's modulus in the experimental device. In this way, the change of fracture width is quite different from the actual one. In the real formation, the fracture width at any position in the fracture is related to the fluid pressure distribution, ground stress distribution and rock mechanical parameter distribution of the entire fracture surface. Therefore, the current device's treatment of fracture width changes is different from the actual fracture. There is no suitable method and device that can consider multi-directional flow and actively adjust the non-uniform change of fracture width. Summary of the invention

[0003] In view of the above problems, the present invention aims to provide a novel hydraulic fracturing temporary plugging and diversion testing device and method.

[0004] The technical solution of the present invention is as follows: On the one hand, a novel hydraulic fracturing temporary plugging and diversion testing device is provided, including an injection system, a visual fracture dynamic simulation device, a recovery system and a central monitoring system; The output end of the injection system is connected to the input end of the visual fracture dynamic simulation device, and is used to inject fracturing fluid or temporary plugging agent into the visual fracture dynamic simulation device; The input end of the recovery system is connected to the output end of the visual fracture dynamic simulation device, and is used to recover the fracturing fluid or temporary plugging agent output by the visual fracture dynamic simulation device; The central monitoring system includes a data monitoring system, a temporary plugging agent concentration control system and an active fracture width dynamic control system. The data monitoring system is used to monitor the flow rate and pressure during fracturing or temporary plugging. The temporary plugging agent concentration control system is used to control the concentration of the temporary plugging agent injected by the injection system. The active fracture width dynamic control system is connected to the data monitoring system and the visual fracture dynamic simulation device respectively, and is used to perform planar three-dimensional fracture extension numerical simulation and temporary plugging agent particle migration numerical simulation according to the pressure monitoring data, and to control the fracture width of the visual fracture dynamic simulation device according to the simulation results.

[0005] Preferably, the visualized crack dynamic simulation device comprises a visualization plate and a crack surface model arranged in the visualization plate, the crack surface model comprises an upper crack surface and a lower crack surface, the lower crack surface is fixed to the inner bottom of the visualization plate, the upper crack surface is movably arranged at the inner top of the visualization plate, and a plurality of pressure sensors are provided on the upper surface of the lower crack surface.

[0006] Preferably, a sealing rubber is provided between the side wall of the upper crack surface and the visualization plate.

[0007] Preferably, the visual fracture dynamic simulation device further comprises a connecting hole, and a direction of the connecting hole is different from an input and output direction from the injection system to the recovery system.

[0008] Preferably, the lower surface of the upper crack surface and the upper surface of the lower crack surface are smooth surfaces or rough surfaces.

[0009] Preferably, the active fracture width dynamic control system comprises connected simulation software and a fracture width electric drive control device, the simulation software is used to perform planar three-dimensional fracture extension numerical simulation and temporary plugging agent particle migration numerical simulation according to pressure monitoring data, and the fracture width electric drive control device is connected to the visual fracture dynamic simulation device, and is used to control the fracture width of the visual fracture dynamic simulation device according to the simulation results.

[0010] Preferably, the seam width electric drive control device comprises a connected motor control group and an automatic lifting screw rod, and the automatic lifting screw rod is connected to the visualized crack dynamic simulation device.

[0011] Preferably, the injection system includes a clean water tank, a fracturing fluid tank, a temporary plugging agent tank, and a mixing tank; The mixing tank is provided with a piston to divide the internal space of the mixing tank into two parts, the upper space is provided with an electric stirring device, and is connected to the fracturing fluid tank and the temporary plugging agent tank through pipeline 1 and pipeline 2 respectively; the lower space is connected to the clean water tank through a constant flow pump; The pipeline 1 is provided with a control valve 1 and an electromagnetic flowmeter 1, the pipeline 2 is provided with a control valve 2 and an electromagnetic flowmeter 2, a control valve 3 is provided between the clean water tank and the constant flow pump, and a control valve 4 is provided between the constant flow pump and the mixing tank; A control valve five, an electromagnetic flow meter three, and a pressure gauge one are arranged in sequence between the injection system and the visual fracture dynamic simulation device.

[0012] Preferably, the recovery system comprises a recovery tank, and a pressure gauge 2 and a control valve 6 are provided in sequence between the visual crack dynamic simulation device and the recovery tank.

[0013] On the other hand, a novel hydraulic fracturing temporary plugging and diversion testing method is also provided, which is tested by using any of the novel hydraulic fracturing temporary plugging and diversion testing devices described above, and comprises the following steps: S1: injecting fracturing fluid into the visual fracture dynamic simulation device through the injection system to perform a hydraulic fracturing fracture extension test; During the hydraulic fracturing crack expansion test, the flow rate and pressure changes during the fracturing process are monitored by the data monitoring system, and the planar three-dimensional crack expansion numerical simulation is performed according to the pressure monitoring data by the active crack width dynamic control system, and the crack width of the visual crack dynamic simulation device is controlled according to the simulation results; S2: The concentration of the temporary plugging agent injected by the injection system is regulated by the temporary plugging agent concentration regulating system, and the temporary plugging agent is injected into the visual fracture dynamic simulation device by the injection system to perform a fracturing temporary plugging diversion test; During the fracturing temporary plugging steering test, the flow rate and pressure changes during the temporary plugging process are monitored by the data monitoring system, the temporary plugging agent particle migration numerical simulation is performed according to the pressure monitoring data by the active fracture width dynamic control system, and the fracture width of the visual fracture dynamic simulation device is controlled according to the simulation results; S3: Based on the data monitored in step S1 and step S2, a dynamic crack width change curve and a pressure change curve are respectively drawn during the crack expansion and temporary plugging process.

[0014] The beneficial effects of the present invention are: The present invention can actively and dynamically adjust the crack width according to the numerical simulation results of planar three-dimensional crack expansion numerical simulation and temporary plugging agent particle migration numerical simulation, and can further consider temporary plugging and diversion under multi-directional flow. The experimental results are more in line with actual working conditions and can provide technical support for indoor evaluation of temporary plugging and diversion effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a structural schematic diagram of the novel hydraulic fracturing temporary plugging and steering test device of the present invention, wherein the dotted line between the active fracture width dynamic control system 53 and the visual fracture dynamic simulation device 3 represents that the active fracture width dynamic control system 53 is connected to the visual fracture dynamic simulation device 3; Figure 2It is a structural schematic diagram of multi-directional flow of the novel hydraulic fracturing temporary plugging and diverting testing device of the present invention.

[0017] Numbers in the figure: 11-clean water tank; 111-control valve three; 112-control valve four; 113-control valve two; 114-control valve one; 115-electromagnetic flowmeter two; 116-electromagnetic flowmeter one; 12-fracturing fluid tank; 13-temporary plugging agent tank; 14-constant flow pump; 15-mixing tank; 151-electric stirring device; 152-piston; 21-control valve five; 22-electromagnetic flowmeter three; 23-pressure gauge one; 24-pressure gauge two; 24B-first pressure gauge two; 24C-second pressure gauge two; 3 -Visualized crack dynamic simulation device; 31-fixing screw; 32-sealing rubber; 33-pressure sensor; 34-crack surface model; 35-connecting hole; 4-recovery tank; 4B-first recovery tank; 4C-second recovery tank; 41-control valve six; 41B-first control valve six; 41C-second control valve six; 5-central monitoring system; 51-data monitoring system; 52-temporary plugging agent concentration control system; 53-active fracture width dynamic control system; 531-motor control group; 532-automatic lifting spiral rod. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other. It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as those generally understood by those of ordinary skill in the art to which this application belongs. The words "including" or "comprising" and the like used in the disclosure of the present invention mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0019] On the one hand, if Figure 1-2 As shown, the present invention provides a novel hydraulic fracturing temporary plugging and diversion testing device, including an injection system, a visual fracture dynamic simulation device 3, a recovery system and a central monitoring system 5; The output end of the injection system is connected to the input end of the visual fracture dynamic simulation device 3, and is used to inject fracturing fluid or temporary plugging agent into the visual fracture dynamic simulation device 3; The input end of the recovery system is connected to the output end of the visual fracture dynamic simulation device 3, and is used to recover the fracturing fluid or temporary plugging agent output by the visual fracture dynamic simulation device 3; The central monitoring system 5 includes a data monitoring system 51, a temporary plugging agent concentration control system 52 and an active fracture width dynamic control system 53. The data monitoring system is used to monitor the flow rate and pressure during fracturing or temporary plugging, and the temporary plugging agent concentration control system is used to control the concentration of the temporary plugging agent injected by the injection system. The active fracture width dynamic control system 53 is connected to the data monitoring system 51 and the visual fracture dynamic simulation device 3 respectively, and is used to perform planar three-dimensional fracture extension numerical simulation and temporary plugging agent particle migration numerical simulation according to the pressure monitoring data, and to control the fracture width of the visual fracture dynamic simulation device 3 according to the simulation results.

[0020] In a specific embodiment, the visualized crack dynamic simulation device 3 includes a visualization plate (the visualization plate is fixed by fixing screws 31) and a crack surface model 34 arranged in the visualization plate, and the crack surface model 34 includes an upper crack surface and a lower crack surface, the lower crack surface is fixed to the inner bottom of the visualization plate, the upper crack surface is movably arranged on the inner top of the visualization plate, and the upper surface of the lower crack surface is provided with multiple pressure sensors 33.

[0021] Optionally, a plurality of the pressure sensors 33 are evenly arranged on the upper surface of the lower crack surface.

[0022] In a specific embodiment, a sealing rubber 32 is provided between the side wall of the upper crack surface and the visualization plate. In this embodiment, by providing a sealing rubber 32 with high pressure resistance, it is possible to maintain sealing during temporary plugging, and at the same time, the sealing rubber 32 with a certain elasticity can ensure the sealing of the model through its own deformation when the width of the crack surface changes unevenly.

[0023] In a specific embodiment, the visual fracture dynamic simulation device 3 further includes a connecting hole 35, and the direction of the connecting hole 35 is different from the input and output direction of the injection system to the recovery system. In this embodiment, by setting the connecting hole 35, the accumulation process of the temporary plugging layer and the fluid diversion flow process under the actual fracture flow (multi-directional flow) conditions can be simulated, so that the test results of the present invention are more in line with the actual working conditions.

[0024] In a specific embodiment, the lower surface of the upper crack surface and the upper surface of the lower crack surface are smooth surfaces or rough surfaces. It should be noted that the crack surface model of the present invention can simulate any crack surface. In addition to the smooth surface or rough surface divided according to the roughness in this embodiment, other types such as wedge-shaped surfaces, irregular surfaces, etc. can be applicable to the present invention. Specifically, they can be selected according to the crack morphology of the target crack, and then the simulated crack surface model can be obtained by 3D printing or other methods.

[0025] In a specific embodiment, the active fracture width dynamic control system 53 includes connected simulation software and a fracture width electric drive control device, wherein the simulation software is used to perform planar three-dimensional fracture extension numerical simulation and temporary plugging agent particle migration numerical simulation according to pressure monitoring data, and the fracture width electric drive control device is connected to the visual fracture dynamic simulation device 3, and is used to control the fracture width of the visual fracture dynamic simulation device according to the simulation results.

[0026] It should be noted that the simulation software for performing planar three-dimensional fracture extension numerical simulation and temporary plugging agent particle migration numerical simulation is prior art, and the specific structure will not be described in detail here.

[0027] In a specific embodiment, the seam width electric drive control device includes a connected motor control group 531 and an automatic lifting screw rod 532 , and the automatic lifting screw rod 532 is connected to the visualized crack dynamic simulation device 3 .

[0028] It should be noted that the motor control group and the automatic lifting screw rod are existing technologies, and the specific structure will not be repeated here.

[0029] In a specific embodiment, a plurality of automatic lifting screw rods 532 are provided. Optionally, the number of the automatic lifting screw rods 532 is the same as the number of pressure sensors on the upper surface of the lower crack surface, and when provided, the automatic lifting screw rods 532 are provided opposite to the pressure sensors 33. Optionally, only four automatic lifting screw rods 532 are provided, and are distributed at the four corners of the upper crack surface.

[0030] In a specific embodiment, the injection system includes a clean water tank 11, a fracturing fluid tank 12, a temporary plugging agent tank 13, and a mixing tank 15; The mixing tank 15 is provided with a piston 152 to divide the internal space of the mixing tank 15 into two parts, the upper part of which is provided with an electric stirring device 151 and is connected to the fracturing fluid tank 12 and the temporary plugging agent tank 13 through pipeline 1 and pipeline 2 respectively; the lower part is connected to the clean water tank 11 through a constant flow pump 14; The pipeline one is provided with a control valve one 114 and an electromagnetic flowmeter one 116, the pipeline two is provided with a control valve two 113 and an electromagnetic flowmeter two 115, a control valve three 111 is provided between the clean water tank 11 and the constant flow pump 14, and a control valve four 112 is provided between the constant flow pump 14 and the mixing tank 15; A control valve five 21, an electromagnetic flow meter three 22, and a pressure gauge one 23 are sequentially arranged between the injection system and the visual fracture dynamic simulation device 3.

[0031] It should be noted that the injection system of the above embodiment is only a preferred implementation case of the present invention, and other injection systems in the prior art that can realize the injection of fracturing fluid or temporary plugging agent can also be applied to the present invention.

[0032] In a specific embodiment, the recovery system includes a recovery tank 4, and a pressure gauge 24 and a control valve 6 41 are provided between the visual crack dynamic simulation device 3 and the recovery tank 4 in sequence.

[0033] Alternatively, if Figure 2 As shown, when the visual fracture dynamic simulation device is further provided with other connecting holes, each connecting hole is also connected to a recovery tank (such as Figure 2 The first recovery tank 4B and the second recovery tank 4C in the embodiment are provided, and a pressure gauge (such as Figure 2 The first pressure gauge 24B and the second pressure gauge 24C) and the control valve (such as Figure 2 The first control valve 641B and the second control valve 641C).

[0034] On the other hand, the present invention also provides a novel hydraulic fracturing temporary plugging and diversion testing method, which is tested by using any of the novel hydraulic fracturing temporary plugging and diversion testing devices described above, and comprises the following steps: S1: injecting fracturing fluid into the visual fracture dynamic simulation device 3 through the injection system to perform a hydraulic fracturing fracture extension test; During the hydraulic fracturing crack expansion test, the flow rate and pressure changes during the fracturing process are monitored by the data monitoring system 51, and the planar three-dimensional crack expansion numerical simulation is performed according to the pressure monitoring data by the active crack width dynamic control system 53, and the crack width of the visual crack dynamic simulation device 3 is adjusted according to the simulation results; S2: The temporary plugging agent concentration control system 52 is used to control the temporary plugging agent concentration injected by the injection system, and the temporary plugging agent is injected into the visual fracture dynamic simulation device 3 through the injection system to perform a fracturing temporary plugging diversion test; During the fracturing temporary plugging steering test, the flow rate and pressure changes during the temporary plugging process are monitored by the data monitoring system 51, and the temporary plugging agent particle migration numerical simulation is performed by the active fracture width dynamic control system 53 according to the pressure monitoring data, and the fracture width of the visual fracture dynamic simulation device 3 is adjusted according to the simulation results; S3: Based on the data monitored in step S1 and step S2, a dynamic crack width change curve and a pressure change curve are respectively drawn during the crack expansion and temporary plugging process.

[0035] In a specific embodiment, using Figure 1 The new hydraulic fracturing temporary plugging and diversion test device shown in the figure is tested, which specifically includes the following steps: (1) Opening the control valve 114 through the temporary plugging agent concentration control system 52, so that the fracturing fluid in the fracturing fluid tank 12 enters the mixing tank 15; (2) Open the control valve three 111, the control valve four 112, the control valve five 21, and the control valve six 41, and inject the clean water in the clean water tank 11 into the lower part of the mixing tank 15 through the constant flow pump 14. The clean water squeezes the piston 152, and injects the fracturing fluid in the upper part of the mixing tank into the visual fracture dynamic simulation device 3; (3) Start the hydraulic fracturing crack expansion test, and the data monitoring system 51 records the flow data Q of the electromagnetic flow meter 322 in real time inj , Data of pressure gauge 23 P b,inj The active seam width dynamic control system 53 receives the data P of the pressure sensor 33. inj , as the injection pressure is increased, the active fracture width dynamic control system 53 performs a planar three-dimensional fracture expansion numerical simulation, transmits a signal to the motor control group 531 to control the automatic lifting screw rod 532 to control the fracture surface model 34, and as the pressure in the fracture continues to change, the results of the software simulation are continuously updated, so as to achieve the active adjustment of the fracture width change during the fracture expansion process; (4) The temporary plugging agent concentration control system 52 opens the switch of the control valve 2 113, injects the temporary plugging agent in the temporary plugging agent tank 13 into the mixing tank 15, reads the flow rate of the fracturing fluid and the temporary plugging agent, configures temporary plugging agents of different concentrations by changing the opening of the control valve, and injects the fluid in the upper part of the mixing tank 15 into the visual fracture dynamic simulation device 3 again with the help of the piston 152; (5) Start the fracturing temporary plugging and steering test, keep the flow rate unchanged, and record the flow data Q of the electromagnetic flowmeter 322 inj , Data of pressure gauge 23 P b,inj and the data P of the pressure sensor 33 inj , using the active crack width dynamic control system 53 to perform numerical simulation of particle migration and actively adjust the crack width changes during temporary plugging; (6) As the test proceeds, the data of pressure gauge 1 23, pressure gauge 2 24, and pressure sensor 33 during the temporary plugging process are recorded, and the dynamic crack width curve and pressure change curve during the crack expansion and temporary plugging process are plotted respectively.

[0036] The above description is only a representative embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the profession, without departing from the scope of the technical solution of the present invention, uses the above-disclosed technical contents to make some changes or modifications to the embodiments are equivalent embodiments of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A new type of hydraulic fracturing temporary plugging and diversion testing device, characterized in that: It includes injection system, visual fracture dynamic simulation device, recovery system and central monitoring system; The output end of the injection system is connected to the input end of the visualized fracture dynamic simulation device, and is used to inject fracturing fluid or temporary plugging agent into the visualized fracture dynamic simulation device; The input end of the recovery system is connected to the output end of the visual fracture dynamic simulation device, and is used to recover the fracturing fluid or temporary plugging agent output by the visual fracture dynamic simulation device; The central monitoring system includes a data monitoring system, a temporary plugging agent concentration control system and an active fracture width dynamic control system. The data monitoring system is used to monitor the flow rate and pressure during fracturing or temporary plugging. The temporary plugging agent concentration control system is used to control the concentration of the temporary plugging agent injected by the injection system. The active fracture width dynamic control system is connected to the data monitoring system and the visual fracture dynamic simulation device respectively, and is used to perform planar three-dimensional fracture extension numerical simulation and temporary plugging agent particle migration numerical simulation according to the pressure monitoring data, and to control the fracture width of the visual fracture dynamic simulation device according to the simulation results.

2. The novel hydraulic fracturing temporary plugging and diversion testing device according to claim 1 is characterized in that: The visualized crack dynamic simulation device includes a visualized plate and a crack surface model arranged in the visualized plate, the crack surface model includes an upper crack surface and a lower crack surface, the lower crack surface is fixed to the inner bottom of the visualized plate, the upper crack surface is movably arranged on the inner top of the visualized plate, and the upper surface of the lower crack surface is provided with a plurality of pressure sensors.

3. The novel hydraulic fracturing temporary plugging and diversion testing device according to claim 2 is characterized in that: A sealing rubber is provided between the side wall of the upper crack surface and the visualization plate.

4. The novel hydraulic fracturing temporary plugging and diversion testing device according to claim 2 is characterized in that: The visual fracture dynamic simulation device further includes a connecting hole, and a direction of the connecting hole is different from an input and output direction from the injection system to the recovery system.

5. The novel hydraulic fracturing temporary plugging and diversion testing device according to claim 2 is characterized in that: The lower surface of the upper crack surface and the upper surface of the lower crack surface are smooth surfaces or rough surfaces.

6. The novel hydraulic fracturing temporary plugging and diversion testing device according to claim 1 is characterized in that: The active fracture width dynamic control system includes connected simulation software and a fracture width electric drive control device. The simulation software is used to perform planar three-dimensional fracture extension numerical simulation and temporary plugging agent particle migration numerical simulation according to pressure monitoring data. The fracture width electric drive control device is connected to the visual fracture dynamic simulation device and is used to control the fracture width of the visual fracture dynamic simulation device according to the simulation results.

7. The novel hydraulic fracturing temporary plugging and diversion testing device according to claim 6 is characterized in that: The seam width electric drive control device comprises a connected motor control group and an automatic lifting screw rod, and the automatic lifting screw rod is connected to the visual crack dynamic simulation device.

8. The novel hydraulic fracturing temporary plugging and diversion testing device according to any one of claims 1 to 7, characterized in that: The injection system includes a clean water tank, a fracturing fluid tank, a temporary plugging agent tank, and a mixing tank; The mixing tank is provided with a piston to divide the internal space of the mixing tank into two parts, the upper space is provided with an electric stirring device, and is connected to the fracturing fluid tank and the temporary plugging agent tank through pipeline 1 and pipeline 2 respectively; the lower space is connected to the clean water tank through a constant flow pump; The pipeline 1 is provided with a control valve 1 and an electromagnetic flowmeter 1, the pipeline 2 is provided with a control valve 2 and an electromagnetic flowmeter 2, a control valve 3 is provided between the clean water tank and the constant flow pump, and a control valve 4 is provided between the constant flow pump and the mixing tank; A control valve five, an electromagnetic flow meter three, and a pressure gauge one are arranged in sequence between the injection system and the visual fracture dynamic simulation device.

9. The novel hydraulic fracturing temporary plugging and diversion testing device according to any one of claims 1 to 7, characterized in that: The recovery system comprises a recovery tank, and a pressure gauge 2 and a control valve 6 are arranged in sequence between the visual crack dynamic simulation device and the recovery tank.

10. A novel hydraulic fracturing temporary plugging and diversion test method, characterized in that: The test is carried out using the novel hydraulic fracturing temporary plugging and diversion test device according to any one of claims 1 to 9, comprising the following steps: S1: injecting fracturing fluid into the visualized fracture dynamic simulation device through the injection system to perform a hydraulic fracturing fracture extension test; During the hydraulic fracturing crack expansion test, the flow rate and pressure changes during the fracturing process are monitored by the data monitoring system, and the planar three-dimensional crack expansion numerical simulation is performed according to the pressure monitoring data by the active crack width dynamic control system, and the crack width of the visual crack dynamic simulation device is controlled according to the simulation results; S2: The concentration of the temporary plugging agent injected by the injection system is regulated by the temporary plugging agent concentration regulating system, and the temporary plugging agent is injected into the visual fracture dynamic simulation device by the injection system to perform a fracturing temporary plugging diversion test; During the fracturing temporary plugging steering test, the flow rate and pressure changes during the temporary plugging process are monitored by the data monitoring system, the temporary plugging agent particle migration numerical simulation is performed according to the pressure monitoring data by the active fracture width dynamic control system, and the fracture width of the visual fracture dynamic simulation device is controlled according to the simulation results; S3: Based on the data monitored in step S1 and step S2, a dynamic crack width change curve and a pressure change curve are respectively drawn during the crack expansion and temporary plugging process.

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