Proppant breakage rate and flow conductivity real-time monitoring method and system based on CT scanning

Abstract

The invention discloses a real-time monitoring method and system for the breakage rate and flow conductivity of a propping agent based on CT scanning. The real-time monitoring method comprises the steps that a CT scanner is externally connected to a quartz glass observation window of a flow guide chamber through a mechanical arm; performing initial scanning on the propping agent in the flow guide chamber through a CT scanner to obtain initial particle volume distribution and determine an initial volume and a minimum volume threshold value; setting the temperature and overburden pressure of the flow guide chamber, and injecting fluid through a constant-speed constant-pressure pump; cT dynamic scanning is triggered at a fixed time interval, and the real-time breakage rate is calculated; when the real-time breakage rate is larger than 5%, the pressure difference, the flow and the crack width are obtained; calculating the flow conductivity by combining the fluid viscosity and the length of the flow guide chamber; when the real-time breakage rate is smaller than or equal to 5%, returning to scan again; and when the pressure difference is greater than 5MPa, the experiment is automatically stopped. According to the invention, the three-dimensional image data in the experiment process can be rapidly obtained and processed and analyzed in real time, so that the measurement time is remarkably shortened, and the measurement efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the fields of oil and gas field fracturing transformation, CT imaging technology, automatic control and image processing technology, and in particular relates to a method and system for real-time monitoring of proppant breakage rate and conductivity based on CT scanning. Background Art

[0002] Measuring the conductivity of fracturing proppants is a crucial task in oil and gas field development in petroleum engineering. It serves as a key parameter for evaluating the efficiency of hydraulic fracturing fractures in promoting oil and gas flow. Conductivity is defined as the product of effective proppant width and fracture permeability. Permeability reflects the ability of the proppant packing layer to allow fluid to flow through it and is influenced by proppant particle arrangement and pore connectivity. Effective fracture width refers to the actual width of the fracture open at closure pressure, which is controlled by proppant strength and placement concentration. Higher conductivity indicates a more efficient flow path for oil and gas in the fracture, and conductivity directly determines the increase in oil and gas production after fracturing.

[0003] Currently, there are no patents on the market for real-time detection of proppant breakage and conductivity. Proppant breakage and conductivity are key indicators for evaluating proppant performance and directly impact the effectiveness of oil and gas reservoir fracturing. Traditional methods have numerous shortcomings. Related patents include: [Unrelated text follows:] The prior art provides a device for detecting proppant long-term conductivity. While capable of testing proppant long-term conductivity, it can only perform a single experiment at a time, resulting in low efficiency (each experiment requires stabilization for 50±2 hours) and inability to monitor proppant breakage in real time. Existing proppant devices rely on differential pressure gauges and displacement sensors, but crossbar displacement sensors are prone to deformation and lack accuracy. The prior art provides a method for measuring proppant breakage, but this method requires pressurizing dry proppant at room temperature before screening and weighing. This method fails to simulate the high-temperature and high-pressure conditions found in reservoirs, and fine particles are easily lost during transfer and drying, resulting in large errors. The prior art also provides a method for detecting proppant breakage in real time. Although this method utilizes CT scanning of a core holder to obtain particle volume distribution for real-time breakage calculation, it fails to incorporate conductivity testing and fails to link the two. Therefore, there is an urgent need to propose a real-time monitoring method and system for proppant breakage rate and conductivity based on CT scanning. Summary of the Invention

[0004] To solve the above technical problems, the present invention proposes a real-time monitoring method and system for proppant breakage rate and conductivity based on CT scanning, which can quickly obtain three-dimensional image data during the experiment and perform real-time processing and analysis, significantly reducing measurement time and improving measurement efficiency.

[0005] On one hand, to achieve the above-mentioned object, the present invention provides a real-time monitoring method of proppant breakage rate and conductivity based on CT scanning, comprising:

[0006] Connect the CT scanner to the quartz glass observation window of the induction chamber through a robotic arm;

[0007] Perform an initial scan of the proppant in the diversion chamber using a CT scanner to obtain the initial particle volume distribution and determine the initial volume and minimum volume threshold;

[0008] Set the temperature and overburden pressure of the diversion chamber and inject the fluid through a constant speed and constant pressure pump;

[0009] Trigger CT dynamic scanning at fixed time intervals to calculate the real-time fragmentation rate;

[0010] When the real-time crushing rate is greater than 5%, the pressure difference, flow rate and crack width are obtained;

[0011] Calculate the flow diversion capacity by combining the fluid viscosity and the length of the diversion chamber;

[0012] When the real-time fragmentation rate is less than or equal to 5%, return to rescan;

[0013] When the pressure difference is greater than 5MPa, the experiment will stop automatically.

[0014] Optionally, the process of externally connecting the CT scanner includes: the diversion chamber is made of Hastelloy material, and a quartz glass observation window with a transmittance greater than 95% is opened on the side wall; the CT scanner is positioned by a robotic arm, the scanning plane is perpendicular to the axis of the diversion chamber, and the positioning error is less than 0.1 mm.

[0015] Optionally, the process of setting the temperature and pressure includes: embedding a heating film outside the guide cavity to control the temperature to 200°C with an accuracy of ±1°C; providing an overlying pressure through a hydraulic press with a control accuracy of ±0.1MPa.

[0016] Optionally, the process of setting the temperature and pressure includes: embedding a heating film outside the guide cavity to control the temperature to 200°C with an accuracy of ±1°C; providing an overlying pressure through a hydraulic press with a control accuracy of ±0.1MPa.

[0017] Optionally, the process of obtaining the pressure difference, flow rate and crack width includes: arranging three pressure difference sensors along the length direction of the diversion chamber to obtain the pressure difference; obtaining the crack width through a photoelectric displacement sensor; and reading the flow rate through a constant speed and constant pressure pump.

[0018] Optionally, the process of calculating the conductivity includes: substituting the pressure difference, flow rate, fracture width, fluid viscosity and diversion chamber length into a correction formula, wherein the real-time crushing rate is used to correct the porosity attenuation.

[0019] Optionally, the process after the test is automatically stopped includes comparing the CT scan data with the standard curve of the proppant database and triggering retesting when the error is greater than 5%.

[0020] On the other hand, to achieve the above-mentioned purpose, the present invention provides a real-time monitoring system for proppant breakage rate and conductivity based on CT scanning, comprising:

[0021] The flow diversion and scanning module is used to perform initial and dynamic scanning of the proppant through an integrated CT scanner through a quartz glass observation window;

[0022] Temperature and pressure control module, used to regulate the temperature and overburden pressure of the diversion chamber and drive fluid injection;

[0023] Parameter acquisition module, used to obtain pressure difference, flow rate and crack width;

[0024] Calculation and analysis module, used to calculate the diversion capacity when the real-time crushing rate is greater than 5%;

[0025] The control execution module is used to trigger rescanning when the real-time crushing rate is less than or equal to 5%, and to stop the experiment when the pressure difference is greater than 5 MPa.

[0026] Technical effect of the present invention: The present invention discloses a real-time monitoring method and system for proppant breakage rate and conductivity based on CT scanning. The CT scanning technology can measure the proppant breakage rate and conductivity by connecting an external CT scanner to the diversion device, and perform non-contact measurement of the internal proppant and its diversion process without interrupting the experiment or physical sampling, thus avoiding the errors and measurement disturbances caused by sample processing in traditional methods. This method can quickly obtain three-dimensional image data during the experiment and perform real-time processing and analysis, which significantly reduces the measurement time, improves the measurement efficiency, and meets the needs for rapid feedback and real-time monitoring of conductivity performance. CT scanning technology can be combined with advanced image processing algorithms and data analysis technologies to realize the automation and standardization of proppant volume distribution, breakage rate and related conductivity calculations, reduce the influence of human factors, and improve the consistency and repeatability of measurement results. At the same time, the conductivity test error is less than 5%, which is much better than the traditional method of 10-15%. In addition to measuring proppant breakage rate and basic conductivity, CT scanning technology can also be combined with displacement sensors to obtain more internal structural characteristic information, such as proppant particle morphology, arrangement structure, embedment depth, etc., and can perform comprehensive multi-parameter analysis and evaluation, providing more comprehensive fracturing support performance evaluation and optimization guidance, and providing more comprehensive quality control and process optimization guidance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0028] Figure 1 Schematic diagram of a process for real-time monitoring of proppant breakage rate and conductivity based on CT scanning according to an embodiment of the present invention;

[0029] Figure 2 This is a flow chart of the experimental device of an embodiment of the present invention. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0032] like Figure 1 As shown, this embodiment provides a real-time monitoring method for proppant breakage rate and conductivity based on CT scanning, including:

[0033] Connect the CT scanner to the quartz glass observation window of the induction chamber through a robotic arm;

[0034] Perform an initial scan of the proppant in the diversion chamber using a CT scanner to obtain the initial particle volume distribution and determine the initial volume and minimum volume threshold;

[0035] Set the temperature and overburden pressure of the diversion chamber and inject the fluid through a constant speed and constant pressure pump;

[0036] Trigger CT dynamic scanning at fixed time intervals to calculate the real-time fragmentation rate;

[0037] When the real-time crushing rate is greater than 5%, the pressure difference, flow rate and crack width are obtained;

[0038] Calculate the flow diversion capacity by combining the fluid viscosity and the length of the diversion chamber;

[0039] When the real-time fragmentation rate is less than or equal to 5%, return to rescan;

[0040] When the pressure difference is greater than 5MPa, the experiment will stop automatically.

[0041] Furthermore, the process of externally connecting the CT scanner includes: the diversion chamber is made of Hastelloy material, and a quartz glass observation window with a transmittance greater than 95% is opened on the side wall; the CT scanner is positioned by a robotic arm, the scanning plane is perpendicular to the axis of the diversion chamber, and the positioning error is less than 0.1mm.

[0042] Furthermore, the process of setting the temperature and pressure includes: a heating film embedded in the guide cavity controls the temperature to 200°C with an accuracy of ±1°C; and a hydraulic press provides overlying pressure with a control accuracy of ±0.1MPa.

[0043] Furthermore, the process of setting the temperature and pressure includes: a heating film embedded in the guide cavity controls the temperature to 200°C with an accuracy of ±1°C; and a hydraulic press provides overlying pressure with a control accuracy of ±0.1MPa.

[0044] Furthermore, the process of obtaining the pressure difference, flow rate and crack width includes: arranging three pressure difference sensors along the length of the diversion chamber to obtain the pressure difference; obtaining the crack width through a photoelectric displacement sensor; and reading the flow rate through a constant speed and constant pressure pump.

[0045] Furthermore, the process of calculating the conductivity includes: substituting the pressure difference, flow rate, fracture width, fluid viscosity and diversion chamber length into the correction formula, wherein the real-time crushing rate is used to correct the porosity attenuation.

[0046] Furthermore, the process after the automatic stop of the experiment includes: comparing the CT scan data with the standard curve of the proppant database, and triggering retesting when the error is greater than 5%.

[0047] Specifically, this embodiment includes:

[0048] Integrated device design:

[0049] Integrated design of the diversion chamber and CT scanner: The diversion chamber of this design is made of Hastelloy alloy, which is resistant to acid and alkali. A quartz glass observation window is opened on the side wall with a transmittance greater than 95%, allowing CT rays to penetrate. An external high-resolution CT scanner (resolution of about 0.1mm) is connected, and the scanning head is precisely positioned by a robotic arm to ensure that the scanning plane is perpendicular to the axis of the diversion chamber. Figure 2 As shown in the figure, the scanning head is positioned with an error of <0.1mm through the robotic arm.

[0050] Temperature and pressure control system: A heating film embedded in the diversion chamber can increase the temperature of the diversion chamber to 200°C with an accuracy of ±1°C. Pressure is provided by a hydraulic press above and can be precisely adjusted on the operating console with an accuracy of ±0.1MPa, meeting the error requirements of reservoir pressure simulation.

[0051] Multi-sensor collaborative module: After the initial scan, the CT scanner automatically triggers a full-section scan every four hours to obtain the three-dimensional distribution of the proppant for monitoring the breakage rate. Flow conductivity parameters require differential pressure, fracture width, and displacement. The differential pressure is directly read using a differential pressure sensor at three measurement points along the length of the diversion chamber, with an accuracy of ±0.01 MPa. Fracture width is measured in real time using a photoelectric displacement sensor to measure the proppant layer thickness with an accuracy of ±0.01 mm. Displacement is controlled by regulating the flow rate using a constant-speed, constant-pressure pump.

[0052] Real-time monitoring and crushing rate calculation process:

[0053] Initial calibration stage: The proppant screened by the vibrating screen is loaded into the diversion chamber.

[0054] The initial particle distribution is obtained by CT scanning, and the minimum particle volume threshold V is calculated. min , V min The particle volume distribution was obtained from the initial CT scan, taking 90% of the minimum volume of the intact particle. S0 The initial total volume of debris and proppant with a diameter less than 0.1 mm is filtered out:

[0055] V S0 =∑V i (V i for a single particle) (1);

[0056] Dynamic scanning and fragmentation rate calculations begin by simulating reservoir conditions for the proppant within the diversion chamber, setting the temperature and overburden pressure. A constant-speed, constant-pressure pump is then used to control the injection fluid volume. After five minutes of stabilization without changing any experimental parameters, CT dynamic scanning can be performed to obtain the real-time fragmentation rate. The formula is as follows:

[0057]

[0058] Among them, V St The volume at the current moment is greater than V min The total amount of particles; for example: if after 24 hours V St =135mm 3 , the initial V S0 =150mm 3 , then n t =10%.

[0059] Dynamic correction of flow conductivity:

[0060] The conductivity correction formula is derived from the logical association of parameters in the conductivity calculation formula. The flow rate is read by a horizontal flow pump to reflect the fluid's flow capacity; the pressure difference is obtained by a sensor to represent the proppant layer's permeability resistance; and the fracture width is fed back in real time by a displacement sensor to indicate the proppant compression state. The conductivity correction formula is obtained based on Darcy's formula:

[0061]

[0062] The physical meaning of this formula is the crushing rate n t The increase of will lead to a decrease in effective porosity and conductivity C f It will decay.

[0063] Control and calibration system:

[0064] Automatic control logic. Output the correlation curve between flow conductivity and crushing rate: After starting the experiment, trigger CT scanning, when the crushing rate n t 5% of the flow capacity C f Calculate and output the conductivity C f and the crushing rate n t The correlation curve, if the breakage rate n t If it is less than 5%, rescan and repeat the process. Based on experimental data verification, when n t When the pressure difference exceeds 5%, the proppant structure changes and the conductivity decreases. The calculated correlation curve accurately reflects the dynamic relationship between the two. When the pressure difference ΔP exceeds 5MPa, a safety protection is triggered, automatically stopping the experiment to prevent overloading of the diversion chamber. Once the correlation curve is generated, the system automatically performs error calibration, comparing the CT scan data with the proppant database to ensure that the error is less than 5%. If it exceeds 5%, retesting is required. The database contains standard crushing rate-conductivity correlation curves for dozens of common proppants of different mesh sizes, calibrated through more than three repeated experiments.

[0065] 3D visualization and output:

[0066] For crushing morphology analysis, the data processing software integrates high-definition image acquisition functions. When CT scans the proppant, the data processing software will automatically mark the particles with a volume loss greater than 50% in red to generate a proppant particle crushing thermal map.

[0067] Output parameter time series curve. The decay rate is calculated by dividing the difference between the current conductivity and the initial conductivity by the initial conductivity. It is used to characterize the effect of increasing the conductivity with the increase of the breakage rate, as shown in Table 1.

[0068] Table 1

[0069]

[0070] like Figure 1 As shown in the process, after the experiment starts, the CT scan will be triggered to obtain the initial three-dimensional distribution of the proppant to monitor the crushing rate. A scan will be performed every 4 hours. If the crushing rate is greater than 5%, the crushing rate is output and the conductivity is calculated. After the experiment, the correlation curve between the crushing rate and the conductivity is derived; otherwise, the scan will be returned and re-scanned.

[0071] like Figure 2The experimental setup process involves a horizontal pump introducing fracturing fluid into the pipeline. The first valve is opened, and the first pressure sensor is monitored to determine if there are any leaks. The second valve is then opened to allow the fracturing fluid to enter the API diversion chamber. A hydraulic press provides pressure above the diversion chamber. A heating membrane is installed outside the diversion chamber to provide heat, and an external temperature sensor transmits the chamber temperature to a computer to confirm whether the experimental temperature has been reached. A CT scanner with an integrated robotic arm ensures that the scanning plane is perpendicular to the diversion chamber. The scanning plane is the side wall of the diversion chamber with a quartz glass observation window to ensure CT radiation penetration. The CT scanner monitors the diversion chamber in real time and transmits the data directly to the control terminal to calculate the breakage rate. Two valves in the diversion chamber are connected to pressure sensors to measure the pressure differential, which is fed back to the control terminal to calculate the diversion capacity. An external vacuum pump and sensor are then connected to evacuate the chamber. The subsequent pressure sensor indicates the back pressure. After passing through the back pressure valve, the fracturing fluid enters a beaker for waste disposal.

[0072] This embodiment also provides a real-time monitoring system for proppant breakage rate and conductivity based on CT scanning, including: a diversion and scanning module for performing initial and dynamic scanning of the proppant through an integrated CT scanner through a quartz glass observation window;

[0073] Temperature and pressure control module, used to regulate the temperature and overburden pressure of the diversion chamber and drive fluid injection;

[0074] Parameter acquisition module, used to obtain pressure difference, flow rate and crack width;

[0075] Calculation and analysis module, used to calculate the diversion capacity when the real-time crushing rate is greater than 5%;

[0076] The control execution module is used to trigger rescanning when the real-time crushing rate is less than or equal to 5%, and to stop the experiment when the pressure difference is greater than 5 MPa.

[0077] A specific application example of this embodiment is as follows:

[0078] Step 1: Prepare the proppant test sample, diversion chamber, CT scanner, constant speed and pressure pump, constant temperature and insulation box, and hydraulic device. Place the diversion chamber on a hydraulic platform, connect the CT scanner, and connect the differential pressure gauge, photoelectric displacement sensor, and control terminal.

[0079] Step 2: Prepare high-definition image acquisition equipment and computer image processing software.

[0080] Step 3: Sample Preparation. At room temperature, sieve 30.00g of the 40 / 70 mesh quartz sand proppant sample to be tested through a vibrating screen. Place the quartz sand into the diversion chamber. Lower the press to compact the diversion chamber. Connect the pipelines to ensure they are unobstructed and the fluid can flow normally. Turn on the vacuum pump to evacuate the diversion chamber.

[0081] Step 4: Initial scan. Obtain the initial particle distribution through CT scanning and calculate V min =0.01mm 3 , V S0 =150mm 3 .

[0082] Step 5: Simulate reservoir conditions. Set the heating membrane temperature to 80°C, the fracturing fluid injection rate through the horizontal pump to 1 ml / min, and the hydraulic press pressure to 35 MPa. Once the gas in the diversion chamber is evacuated and the temperature and pressure stabilize, turn on the horizontal pump and begin the experiment.

[0083] Step 6 Real-time scanning and calculation of fragmentation rate. The CT scan is automatically performed every four hours. The computer image processing software will analyze the CT scan data in real time and generate a particle fragmentation thermal map and a three-dimensional distribution map. For example, after the 24th hour scan, the V S1 =135mm 3 , substituting into the above formula (2), the crushing rate can be calculated:

[0084]

[0085] Step 7: Determination of flow conductivity. The differential pressure gauge measures ΔP = 0.5 MPa; the flow meter reads Q = 10 ml / min; the displacement sensor measures proppant thickness ω = 5 mm; the fluid viscosity is μ = 1 cP; and the flow chamber length L = 50 mm. Substitute these parameters into the above formula (3):

[0086]

[0087] Step 8 Data calibration. The system will automatically calculate the crushing rate n t The flow conductivity is compared with the database. If the error is outside 5%, it will be re-measured. Otherwise, the crushing rate and flow conductivity will be output.

[0088] Step 9: Data processing. The control terminal generates a three-dimensional visualization report to display the particle breakage rate distribution, and processes the output breakage rate and conductivity to generate a conductivity change curve.

[0089] The present invention discloses a real-time monitoring method and system for proppant breakage rate and conductivity based on CT scanning. The CT scanning technology can measure the proppant breakage rate and conductivity by connecting an external CT scanner to the diversion device, and perform non-contact measurement of the internal proppant and its diversion process without interrupting the experiment or physical sampling, thus avoiding the errors and measurement disturbances caused by sample processing in traditional methods. This method can quickly obtain three-dimensional image data during the experiment and perform real-time processing and analysis, which significantly reduces the measurement time, improves the measurement efficiency, and meets the needs for rapid feedback and real-time monitoring of conductivity performance. CT scanning technology can be combined with advanced image processing algorithms and data analysis technologies to realize the automation and standardization of proppant volume distribution, breakage rate and related conductivity calculations, reduce the influence of human factors, and improve the consistency and repeatability of measurement results. At the same time, the conductivity test error is less than 5%, which is much better than the 10-15% of the traditional method. In addition to measuring proppant breakage rate and basic conductivity, CT scanning technology can also be combined with displacement sensors to obtain more internal structural characteristic information, such as proppant particle morphology, arrangement structure, embedment depth, etc., and can perform comprehensive multi-parameter analysis and evaluation, providing more comprehensive fracturing support performance evaluation and optimization guidance, and providing more comprehensive quality control and process optimization guidance.

[0090] The above are merely preferred embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A real-time monitoring method for proppant breakage rate and conductivity based on CT scanning, characterized in that: include: Connect the CT scanner to the quartz glass observation window of the induction chamber through a robotic arm; Perform an initial scan of the proppant in the diversion chamber using a CT scanner to obtain the initial particle volume distribution and determine the initial volume and minimum volume threshold; Set the temperature and overburden pressure of the diversion chamber and inject the fluid through a constant speed and constant pressure pump; Trigger CT dynamic scanning at fixed time intervals to calculate the real-time fragmentation rate; When the real-time crushing rate is greater than 5%, the pressure difference, flow rate and crack width are obtained; Calculate the flow diversion capacity by combining the fluid viscosity and the length of the diversion chamber; When the real-time fragmentation rate is less than or equal to 5%, return to rescan; When the pressure difference is greater than 5MPa, the experiment will stop automatically.

2. The method for real-time monitoring of proppant breakage rate and conductivity based on CT scanning according to claim 1, characterized in that: The process of connecting the CT scanner externally includes: the induction chamber is made of Hastelloy material, and a quartz glass observation window with a transmittance greater than 95% is opened on the side wall; the CT scanner is positioned by a robotic arm, the scanning plane is perpendicular to the axis of the induction chamber, and the positioning error is less than 0.1mm.

3. The method for real-time monitoring of proppant breakage rate and conductivity based on CT scanning according to claim 1, characterized in that: The process of setting the temperature and pressure includes: a heating film embedded in the guide cavity controls the temperature to 200°C with an accuracy of ±1°C; and a hydraulic press provides the overlying pressure with a control accuracy of ±0.1MPa.

4. The method for real-time monitoring of proppant breakage rate and conductivity based on CT scanning according to claim 1, wherein: The process of setting the temperature and pressure includes: a heating film embedded in the guide cavity controls the temperature to 200°C with an accuracy of ±1°C; and a hydraulic press provides the overlying pressure with a control accuracy of ±0.1MPa.

5. The method for real-time monitoring of proppant breakage rate and conductivity based on CT scanning according to claim 1, wherein: The process of obtaining pressure difference, flow rate and crack width includes: placing three pressure difference sensors along the length of the diversion chamber to obtain pressure difference; obtaining crack width through a photoelectric displacement sensor; and reading flow rate through a constant speed and constant pressure pump.

6. The method for real-time monitoring of proppant breakage rate and conductivity based on CT scanning according to claim 1, wherein: The process of calculating conductivity involves substituting pressure differential, flow rate, fracture width, fluid viscosity, and chamber length into a correction formula, where the real-time fragmentation rate is used to correct for porosity attenuation.

7. The method for real-time monitoring of proppant breakage rate and conductivity based on CT scanning according to claim 1, wherein: The process after the automatic test stop includes comparing the CT scan data with the standard curve of the proppant database and triggering retesting when the error is greater than 5%.

8. The system for real-time monitoring of proppant breakage rate and conductivity based on CT scanning according to any one of claims 1 to 7, characterized in that: include: The flow diversion and scanning module is used to perform initial and dynamic scanning of the proppant through an integrated CT scanner through a quartz glass observation window; Temperature and pressure control module, used to regulate the temperature and overburden pressure of the diversion chamber and drive fluid injection; Parameter acquisition module, used to obtain pressure difference, flow rate and crack width; Calculation and analysis module, used to calculate the diversion capacity when the real-time crushing rate is greater than 5%; The control execution module is used to trigger rescanning when the real-time crushing rate is less than or equal to 5%, and to stop the experiment when the pressure difference is greater than 5 MPa.

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