Proppant flow guiding device under high-temperature and high-pressure gas-water-rock reaction and testing method

Abstract

The invention discloses a proppant flow guiding device under high-temperature and high-pressure gas-water-rock reaction and a testing method, and relates to the field of displacement. The invention discloses a high-temperature and high-pressure gas-water-rock reaction lower proppant flow guiding device which comprises a high-temperature and high-pressure visible reaction kettle, an API flow guiding chamber, a rock core holder, a gas-liquid injection system, a sound wave and nuclear magnetic resonance system, a gas-liquid collection system and a vacuum system, and the gas-liquid injection system conveys a permeable medium to penetrate through the high-temperature and high-pressure visible reaction kettle, the API flow guiding chamber and the rock core holder; the sound wave and nuclear magnetic resonance system transmits sound waves to penetrate through the core holder and perform nuclear magnetic resonance on the core holder; the gas-liquid collection system is used for receiving gas-liquid phase metering of the high-temperature and high-pressure visible reaction kettle, the API flow guide chamber and the core holder; the vacuum system is used for vacuumizing the high-temperature and high-pressure visible reaction kettle, the API flow guide chamber and the core holder. The proppant flow guiding device under the high-temperature and high-pressure gas-water-rock reaction and the testing method can simulate and explore various reaction media and rock mass reaction mechanisms, and the testing efficiency and the testing precision are improved.

Description

Technical Field

[0001] This application relates to the field of displacement, and more specifically, to a proppant diversion device and testing method under high temperature and high pressure gas-water-rock reaction. Background Technology

[0002] In the development of deep geological resources, the physicochemical properties of reservoirs are typically altered by injecting gases, liquids, gas-liquid mixtures, or gas-liquid-solid mixtures to enhance the existing reservoir. When these gases, gas-liquid mixtures, or gas-liquid-solid mixtures are injected, they inevitably react chemically with the reservoir rocks and formation water, causing changes in the physical and fluid properties of the reservoir rocks. The dissolution of existing minerals and the formation and precipitation of new minerals will inevitably affect the pore structure of the rocks, thereby modifying the flow characteristics of fluids and influencing the injection of surface fluids. Therefore, it is necessary to conduct systematic research on the effects of gas-water-rock interaction experiments on the modification of rock pore characteristics and the influence on seepage characteristics, based on the geophysicochemical conditions of deep reservoirs.

[0003] Currently, most experimental setups for studying gas-water-rock interactions are conducted in high-temperature, high-pressure reactors, and primarily use rock sample particles as the research object, thus neglecting the impact of water-rock reactions on rock properties. Since chemical reactions mostly occur on the rock sample surface, the focus is often on studying the mineral dissolution, precipitation, and evolution patterns on the rock sample surface. Although porosity and permeability characteristics can be tested after the high-temperature, high-pressure gas-water-rock reaction, observations in near-normal temperature and pressure environments have a certain lag in analyzing changes in fluid ion concentration and cannot guarantee the accuracy of pore structure and chemical composition, making real-time observation of changes in the pore structure within the rock sample throughout the entire high-temperature, high-pressure gas-water-rock reaction process impossible. Furthermore, existing research largely focuses on the effects of temperature and pressure changes on the gas-water-rock reaction process and pore structure characteristics, neglecting the influence of pH on the gas-water-rock reaction after the injection of permeable media with different properties. However, changes in pH have a significant impact on the formation and precipitation of new minerals.

[0004] Furthermore, fracturing operations are frequently used to enhance production in the development of low-permeability oil and gas reservoirs and sandstone uranium deposits. The production enhancement effect of fracturing is closely related to the conductivity of the proppant fractures, which depends on the fracture width and the permeability of the proppant after fracture closure. Therefore, only by optimizing and controlling the quality of proppants from different sources before fracturing operations can the best construction design be guaranteed. However, existing methods for testing the conductivity of fracturing proppants are time-consuming and labor-intensive, and suffer from drawbacks such as low testing accuracy and long experimental cycles. Moreover, the testing devices for proppant migration conductivity are limited in function and cannot accurately simulate experiments. Summary of the Invention

[0005] The purpose of this application is to provide a proppant diversion device and testing method under high temperature and high pressure gas-water-rock reaction, which can simulate and explore the reaction mechanism of various reaction media and rock masses, save manpower, overcome the problems of low testing accuracy and long experimental cycle, and improve the testing accuracy of permeability and diversion capacity.

[0006] This application is implemented as follows: This application provides a proppant diversion device under high temperature and high pressure gas-water-rock reaction, comprising: The gas-water-rock reaction system includes a high-temperature and high-pressure visible reactor, used to mix gas and liquid phases with rock samples in the high-temperature and high-pressure visible reactor and react them under high temperature and high pressure. The proppant diversion system includes an API diversion chamber, which is used to pass fracturing fluid into the API diversion chamber containing rock samples at a preset pressure and temperature for diversion capacity testing; A porosity and permeability testing system, including a core holder, is used to pass a permeating medium through a rock sample held in the core holder at a preset pressure and temperature to detect the porosity of the rock sample. The gas-liquid injection system is used to transport permeable media through pipelines through the high-temperature and high-pressure visible reactor of the gas-water-rock reaction system, the API flow chamber of the proppant flow system, and the rock sample in the core holder of the porosity and permeability test system. The acoustic and nuclear magnetic resonance system is used to transmit acoustic waves through the rock sample in the core holder and receive them, and to perform nuclear magnetic resonance processing on the rock sample in the core holder. The gas-liquid collection system is connected to the gas-water-rock reaction system, the proppant diversion system, and the porosity-permeability testing system, respectively, to receive and measure the gas and liquid phases. The vacuum system is connected to the gas-water-rock reaction system, the proppant diversion system, and the porosity-permeability testing system for vacuuming.

[0007] In some alternative implementations, the gas-water-rock reaction system includes a reactor sampler and a microscopic imaging system connected to a high-temperature, high-pressure, visual reactor. The outer wall of the high-temperature, high-pressure, visual reactor is fitted with a first annular temperature heating jacket. The high-temperature, high-pressure, visual reactor is connected to a pH sensor for detecting the internal pH value and a confining pressure tracking pump. One side of the high-temperature, high-pressure, visual reactor is connected to a gas-liquid injection system, and the other side is connected to a gas-liquid collection system and a vacuum system.

[0008] In some alternative implementations, the proppant diversion system includes a fracturing fluid mixing container connected to the API diversion chamber and a hydraulic press with a fracturing chamber. The fracturing fluid mixing container is connected to a gas-liquid injection system, and the API diversion chamber is connected to a gas-liquid collection system and a vacuum system, respectively.

[0009] In some optional embodiments, the gas-liquid injection system includes a gas injection device and a liquid injection device. The gas injection device includes multiple gas cylinders and at least one air compressor. At least one gas cylinder is connected to a high-temperature, high-pressure visual reactor, an API flow chamber, and a core holder via a pipeline sequentially equipped with a pressure regulating valve, a gas booster pump, and a gas storage container. The air compressor is connected to the gas storage container. At least one gas cylinder is connected to the high-temperature, high-pressure visual reactor, the API flow chamber, and the core holder via a pipeline sequentially equipped with a water bath device and a constant-speed, constant-pressure pump. At least one intermediate pressure vessel is connected in parallel between the constant-speed, constant-pressure pump and the pipeline connecting the high-temperature, high-pressure visual reactor, the API flow chamber, and the core holder. The liquid injection device includes a liquid reservoir and a steam generator. The liquid reservoir is connected to the constant-speed, constant-pressure pump, and the steam generator is connected in parallel with the intermediate pressure vessel.

[0010] In some optional implementations, the porosity-permeability testing system includes a gas tank, a fixed container, a porosity measurement sample chamber, a first differential pressure transmitter, and a confining pressure tracking pump. The core holder is equipped with a second annular temperature heating jacket for heating the held rock sample. The gas tank is connected to the fixed container, the porosity measurement sample chamber, and the core holder, respectively. The confining pressure tracking pump is connected to the core holder. One end of the fixed container, the porosity measurement sample chamber, and the core holder is connected to a gas-liquid injection system, and the other end is connected to a gas-liquid collection system and a vacuum system, respectively.

[0011] In some alternative implementations, the gas-liquid collection system includes a condenser, a back pressure valve, a back pressure tracking pump, and a leachate collector connected in sequence via pipelines. The condenser and the back pressure tracking pump are respectively connected to both ends of a gas-liquid separator. One end of the gas-liquid separator is connected in sequence to a dryer and a gas flow meter, and the other end is connected to a pressure relief valve and a gas sampler. The condenser is connected to a gas-water-rock reaction system, a proppant diversion system, and a porosity-permeability testing system.

[0012] In some alternative implementations, the acoustic and nuclear magnetic resonance system includes a nuclear magnetic resonance spectrometer, multiple acoustic transmitters and multiple acoustic receivers, with a core holder located inside the test chamber of the nuclear magnetic resonance spectrometer, and the multiple acoustic transmitters and multiple acoustic receivers respectively connected to both sides of the core holder.

[0013] In some alternative implementations, the vacuum system includes a vacuum container and a vacuum pump connected in sequence, the vacuum container being connected to a gas-water-rock reaction system, a proppant diversion system, and a porosity-permeability testing system, respectively.

[0014] This application also provides a test method for the above-mentioned proppant diversion device under high temperature and high pressure gas-water-rock reaction, which includes the following steps: Select appropriate rock samples or powdered rock samples and load them into a high-temperature, high-pressure visual reactor, API flow chamber, and core holder; Vacuum systems were used to evacuate the high-temperature and high-pressure visual reactor, API flow chamber, and core holder, respectively. Gas, liquid, gas-liquid mixture or gas-liquid-solid mixture are selectively injected into high-temperature and high-pressure visual reactors, core holders and API flow chambers using a gas-liquid injection system. The gas-liquid collection system is used to selectively receive and measure the gas and liquid phases of the gas-water-rock reaction system, proppant diversion system, and porosity-permeability testing system.

[0015] In some alternative implementations, when a gas-liquid injection system is used to inject gas, liquid, gas-liquid mixture or gas-liquid-solid mixture into the core holder, the emitted sound waves are received after passing through the rock sample inside the core holder, and the rock sample inside the core holder is subjected to nuclear magnetic resonance processing.

[0016] In some alternative implementations, when a gas-liquid-solid mixture is introduced into the API flow chamber at a preset temperature and pressure using a gas-liquid injection system, a backpressure tracking pump connected to the API flow chamber in the gas-liquid collection system is used to regulate the fluid flow rate through the API flow chamber and calculate the pressure change of the permeating medium within the API flow chamber. and the conductivity of rock samples in the API diversion chamber and effective penetration rate .

[0017] In some alternative implementations, a gas-liquid injection system is used to pump gas, liquid, gas-liquid mixture, or gas-liquid-solid mixture into the core holder; a gas-liquid collection system is used to receive and meter the gas, liquid, gas-liquid mixture, or gas-liquid-solid mixture in the core holder, and then the permeability of the rock sample in the core holder is calculated. .

[0018] In some alternative implementations, when a gas-liquid injection system is used to pump gas, liquid, gas-liquid mixture, or gas-liquid-solid mixture into the core holder, emitted sound waves are received after passing through the rock sample inside the core holder. Nuclear magnetic resonance (NMR) processing is then performed on the rock sample inside the core holder, and the number of pore throats in the rock sample is determined based on the number of pore throats within the core holder. With fractal dimension Calculate the number of pore throats in rock samples based on the relationship between them. .

[0019] The beneficial effects of this application are as follows: The high-temperature and high-pressure gas-water-rock reaction proppant diversion device provided by this application can simulate water-rock reaction experiments, gas-water-rock reaction experiments, proppant fracture diversion capacity, seepage and displacement processes under high-temperature and high-pressure conditions. It can study the modification of rock pore characteristics and seepage mechanism, realize single-phase medium water-rock reaction experiments and multi-phase medium gas-water-rock reaction experiments under high-temperature and high-pressure conditions, realize single-phase medium proppant diversion experiments and multi-phase medium proppant diversion experiments under high-temperature and high-pressure conditions, realize the permeation of various types of permeable media under high-temperature and high-pressure conditions, realize the displacement of multi-phase and multiple media under high-temperature and high-pressure conditions, realize the permeability measurement of rock samples in multiple permeable media, and meet the requirements of deep thermal fluid activity and resource development processes of rock mass interacting with gas, aqueous solution media or supercritical gas under high-temperature and high-pressure formation conditions, explore the interaction mechanism between rock mass and reaction media, save manpower, overcome the problems of low test accuracy and long experimental cycle, and improve the test accuracy of permeability and diversion capacity. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the proppant diversion device under high temperature and high pressure gas-water-rock reaction provided in the embodiments of this application; Figure 2 This is a partial cross-sectional view of the core holder in the high-temperature and high-pressure gas-water-rock reaction proppant diversion device provided in the embodiments of this application.

[0022] In the diagram: 100, High-temperature and high-pressure visual reactor; 110, Reactor sampler; 120, Microscopic imaging system; 130, First nuclear magnetic resonance spectrometer; 140, First annular temperature heating jacket; 150, pH sensor; 210, API flow chamber; 220, Fracturing fluid stirring container; 230, Hydraulic press; 240, Crushing chamber; 250, Second differential pressure transmitter; 310, Gas cylinder; 320, Pressure regulating valve; 321, Safety valve; 330, Gas booster pump; 340, Gas storage container; 350, Water bath device; 360, Constant speed and constant pressure pump; 370, Air compressor; 371, Solenoid valve; 380, Intermediate pressure vessel; 390, Liquid receiver; 391. Steam generator; 400, gas tank; 410, fixed container; 420, porosity measurement sample chamber; 430, core holder; 440, first differential pressure transmitter; 450, confining pressure tracking pump; 451, confining pressure fluid tank; 460, second annular temperature heating jacket; 470, second nuclear magnetic resonance spectrometer; 480, acoustic wave transmitter; 490, acoustic wave receiver; 510, condenser; 520, back pressure valve; 530, back pressure tracking pump; 540, leachate collector; 550, gas-liquid separator; 560, dryer; 570, gas flow meter; 580, pressure relief valve; 590, gas sampler; 610, vacuum container; 620, vacuum pump; 700, computer. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The features and performance of the high-temperature and high-pressure gas-water-rock reaction proppant diversion device and testing method of this application are further described in detail below with reference to the embodiments.

[0031] like Figure 1 and Figure 2As shown in the embodiment of this application, a proppant diversion device under high-temperature and high-pressure gas-water-rock reaction is provided, including a gas-water-rock reaction system, a proppant diversion system, a gas-liquid injection system, a porosity and permeability characteristic testing system, an acoustic and nuclear magnetic resonance system, a core heating system, a pressure loading system, a gas-liquid collection system, a vacuum system, and a data acquisition and temperature-pressure control system. The gas-water-rock reaction system is used to mix the gas phase and liquid phase with the rock sample in a high-temperature and high-pressure visible reaction vessel 100 and react them under high temperature and high pressure. The proppant diversion system is used to introduce fracturing fluid into the API diversion chamber 210 containing the rock sample at a preset pressure and temperature for diversion capacity testing. The porosity and permeability characteristic testing system is used to introduce the permeating medium under a preset pressure and temperature. Force is applied through the rock sample held by the core holder 430 to detect core porosity; the gas-liquid injection system is used to transport the permeable medium through pipelines through the rock samples in the gas-water-rock reaction system, proppant diversion system, and porosity-permeability testing system; the acoustic and nuclear magnetic resonance system is used to emit acoustic waves that pass through the rock sample in the porosity-permeability testing system and receive them, and to perform nuclear magnetic resonance processing on the rock samples in the high-temperature and high-pressure visual reactor 100 and the core holder 430; the gas-liquid collection system is connected to the gas-water-rock reaction system, proppant diversion system, and porosity-permeability testing system respectively to receive and measure the gas and liquid phases; the vacuum system is connected to the gas-water-rock reaction system, proppant diversion system, and porosity-permeability testing system respectively for evacuation. The data acquisition temperature and pressure control system collects data on the pressure, differential pressure, temperature, and pH value changes over time inside the high-temperature and high-pressure visual reactor 100, core holder 430, and API diversion chamber 210 during the experiment.

[0032] The gas-water-rock reaction system includes a high-temperature and high-pressure visual reactor 100, a reactor sampler 110 connected to the bottom of the high-temperature and high-pressure visual reactor 100 via a pipe, and a microscopic imaging system 120 connected to one side of the high-temperature and high-pressure visual reactor 100. The outer wall of the high-temperature and high-pressure visual reactor 100 is fitted with a first annular temperature heating jacket 140, and the top of the high-temperature and high-pressure visual reactor 100 is connected to a pH sensor 150 for detecting the internal pH value. One side of the high-temperature and high-pressure visual reactor 100 is connected to a gas-liquid injection system via an inlet connector, and the other side is connected to a gas-liquid collection system and a vacuum system via an outlet connector.

[0033] The proppant diversion system includes an API diversion chamber 210, a fracturing fluid mixing container 220 connected to the API diversion chamber 210, and a hydraulic press 230 equipped with a fracturing chamber 240. The fracturing fluid mixing container 220 is connected to a gas-liquid injection system. The two sides of the API diversion chamber 210 are connected to a gas-liquid collection system and a vacuum system, respectively. The two ends of the API diversion chamber 210 are connected in parallel to a second differential pressure transmitter 250 through pipelines.

[0034] The porosity and permeability testing system includes a gas tank 400, a fixed container 410, a porosity measurement sample chamber 420, a core holder 430, a first differential pressure transmitter 440, and a confining pressure tracking pump 450. The core holder 430 is equipped with a second annular heating jacket 460 for heating the held rock sample. The gas tank 400 is connected to the fixed container 410, the porosity measurement sample chamber 420, and the core holder 430 via pipes equipped with pressure regulating valves and safety valves. The confining pressure tracking pump 450 is connected to a confining pressure fluid tank 451 and is connected to the inlet connector of the high-temperature and high-pressure visual reactor 100 and one side of the core holder 430 via pipes equipped with safety valves. The fluid inlets at one end of the fixed container 410, the porosity measurement sample chamber 420, and the core holder 430 are connected to a gas-liquid injection system, and the fluid outlets at the other end are connected to a gas-liquid collection system and a vacuum system.

[0035] The gas-liquid injection system includes a gas injection device and a liquid injection device. The gas injection device includes two gas cylinders 310 and an air compressor 370. One gas cylinder 310 is connected to the gas-water-rock reaction system, the proppant diversion system, and the porosity-permeability testing system via a pipeline sequentially equipped with a pressure regulating valve 320, a safety valve 321, a gas booster pump 330, a gas storage container 340, and a control valve. The air compressor 370 is connected to the gas storage container 340 via a pipeline equipped with a solenoid valve 371. One gas cylinder 310 is connected to the gas storage container 340 via a pipeline sequentially equipped with a water bath device 350 and a constant speed and constant pressure pump 370. Pipeline 60 is connected to the gas-water-rock reaction system, proppant diversion system, and porosity characteristic testing system. Three intermediate pressure vessels 380 are connected in parallel between the constant speed and constant pressure pump 360 and the pipelines of the gas-water-rock reaction system, proppant diversion system, and porosity characteristic testing system. The liquid injection device includes a liquid reservoir 390 and a steam generator 391. The liquid reservoir 390 is connected to the constant speed and constant pressure pump 360, and the steam generator 391 is connected in parallel with the three intermediate pressure vessels 380. Control valves are respectively installed on the pipelines at both ends of the intermediate pressure vessels 380 and the steam generator 391.

[0036] The acoustic wave and nuclear magnetic resonance system includes a first nuclear magnetic resonance instrument 130, a second nuclear magnetic resonance instrument 470, acoustic wave transmitters 480 and acoustic wave receivers 490 arranged at intervals, a high-temperature and high-pressure visual reactor 100 is located in the test chamber of the first nuclear magnetic resonance instrument 130, a core holder 430 is located in the test chamber of the second nuclear magnetic resonance instrument 470, and the acoustic wave transmitters 480 and acoustic wave receivers 490 are respectively connected to both sides of the core holder 430.

[0037] The gas-liquid collection system includes a condenser 510, a back pressure valve 520, a control valve, a back pressure tracking pump 530, and a leachate collector 540 connected in sequence via pipelines. The condenser 510 and the back pressure tracking pump 530 are respectively connected to both ends of the gas-liquid separator 550. One end of the gas-liquid separator 550 is connected in sequence to a dryer 560 and a gas flow meter 570, and the other end is connected to a pressure relief valve 580 and a gas sampler 590. The condenser 510 is connected to the gas-water-rock reaction system, the proppant diversion system, and the porosity-permeability testing system.

[0038] The vacuum system includes a vacuum container 610 and a vacuum pump 620 connected in sequence. The vacuum container 610 is connected to the gas-water-rock reaction system, the proppant diversion system and the porosity-permeability testing system, respectively.

[0039] The data acquisition temperature and pressure control system includes pressure sensors and temperature sensors respectively located on both sides of the high temperature and high pressure visual reactor 100 and both ends of the core holder 430, differential pressure sensors located at both ends of the core holder 430 and the API flow chamber 210, and a computer 700. The computer 700 is connected to the temperature sensor, pressure sensor, differential pressure sensor and pH sensor 150 for signal transmission.

[0040] The gas source consists of two gas cylinders 310 and a gas tank 400. The gas cylinders 310 and 400 are equipped with a pressure regulating valve 320 and a safety valve at their openings, respectively. One of the gas cylinders 310 is connected to a water bath device 350 to enable the injection of supercritical gas.

[0041] Before injecting gas and liquid, the gas injection device and liquid injection device of the gas-liquid injection system are equipped with an intermediate pressure vessel 380 for pre-pressurization. The intermediate pressure vessel 380 can inject gas or liquid alone, or it can inject a single medium (one gas or liquid) or a multiphase medium (two gases and liquid mixed). The liquid is heated by a water bath device 350 and a steam generator 391. Finally, the gas and liquid are injected at high temperature and high pressure by a gas booster pump 330 and a constant speed and constant pressure pump 360.

[0042] According to API 19C-2018: Measurement and Specification of Proppants Used in Hydraulic Fracturing and Gravel Packing Operations, in this embodiment, the outlet end of the API flow chamber 210 is connected to a filter device.

[0043] In this embodiment, the porosity measurement sample chamber 420 is a prior art technology, which is designed based on the isothermal expansion principle of Boyle-Marriott's law, and the calibration gas used can be either N2 or H2.

[0044] The intermediate pressure vessel 380, steam generator 391, reactor sampler 110, gas sampler 590, high-temperature and high-pressure visible reactor 100, core holder 430 and API flow guide chamber 210 are made of corrosion-resistant Haas alloy, HC276 or 316L stainless steel.

[0045] This application also provides a test method for conducting high-temperature and high-pressure gas-water-rock reaction tests in multiphase media using the above-mentioned high-temperature and high-pressure gas-water-rock reaction proppant guiding device, including the following steps: Step 1: Turn on the gas injection device of the gas-liquid injection system, and pump the gas medium in the two gas cylinders 310 into the gas pipeline through the gas booster pump 330 and the constant speed and constant pressure pump 360; turn on the liquid injection device, and pump the aqueous solution medium in the liquid reservoir 390 into the liquid pipeline through the constant speed and constant pressure pump 360 and the pipeline; the flow rate range of the constant speed and constant pressure pump 360 is 0.01~90ml / min, the maximum pressure resistance is 100MPa, and the flow rate accuracy is 0.1%FS; Step 2: Monitor the pressure in the gas and liquid pipelines after adding gas and liquid media using pressure gauges. After the aqueous solution enters the liquid pipeline, turn on the steam generator 391 to heat the medium and simulate the temperature of the permeating medium at the formation depth. The temperature control range of the steam generator 391 is room temperature to 300℃, the internal pipeline is pressure resistant to 80MPa, and the temperature control accuracy is ±0.1℃. Step 3: After the temperature and pressure of the permeation medium are constant, open the control valve downstream of the steam generator 391 to allow the permeation medium to pass through the rock sample in the high-temperature and high-pressure visible reactor 100. At the same time, use the back pressure tracking pump 530 of the gas-liquid collection system and the first annular temperature heating jacket 140 fitted on the outer wall of the high-temperature and high-pressure visible reactor 100 to adjust the gas-water-rock reaction pressure and temperature in the high-temperature and high-pressure visible reactor 100. The flow rate range of the back pressure tracking pump 530 is 0.1~1000mL / min, the working pressure is 70MPa, the pressure accuracy is 0.01MPa, and the operation of the back pressure tracking pump 530 can be controlled by a computer. It has two test modes: pulseless, continuous flow, and constant pressure and constant speed. Step 4: Using a constant speed and pressure pump 360, gas and aqueous solution media are pumped into a high-temperature and high-pressure visual reactor 100. The rock sample placed inside the high-temperature and high-pressure visual reactor 100 has a size of φ50×100mm. The working pressure is 75MPa, and the working temperature is room temperature to 200℃. Using a confining pressure tracking pump 450, fluid from the confining pressure fluid tank 451 is introduced into the high-temperature and high-pressure visual reactor 100 to simulate the required confining pressure. In this embodiment, the confining pressure is 0 to 40MPa. The internal temperature is adjusted by a first annular temperature heating jacket 140 installed outside the high-temperature and high-pressure visual reactor 100. The experimental temperature is room temperature to 200℃. Step 5: During the high-temperature and high-pressure gas-water-rock reaction process inside the high-temperature and high-pressure visible reactor 100, a reactor sampler 110 is used to take samples from the bottom of the high-temperature and high-pressure visible reactor 100 and test the changes in solution composition. The working pressure and working temperature of the reactor sampler 110 are consistent with those of the high-temperature and high-pressure visible reactor 100. At the same time, a pH sensor 150 is used to read the pH changes inside the high-temperature and high-pressure visible reactor 100. The measurement range of the pH sensor 150 is 0.01-14 pH, and the pH accuracy is ±0.002 pH. A microscope imaging system 120 is used to test the surface morphology changes of the rock sample inside the high-temperature and high-pressure visible reactor 100. In this embodiment, an MV-3000UC USB2.0 color industrial digital camera with a resolution of over 5 megapixels is selected, equipped with a single hard-tube fiber optic cold light source XD-301 cold light source to capture the surface morphology changes of the internal rock sample. Step Six: During the high-temperature and high-pressure gas-water-rock reaction process inside the high-temperature and high-pressure visible reactor 100, the gas and liquid phase mixture inside the reactor 100 is condensed through a pipe into the condenser 510 and then enters the gas-liquid separator 550. The gas-liquid separator 550 separates the reacted gas and liquid phases and sends them to the dryer 560 to dry the liquid components carried in the gas. Subsequently, a gas flow meter 570 is used to measure the gas flow rate to ensure the accuracy of gas measurement and to protect the gas flow meter. In this embodiment, the gas flow meter 570 consists of a flow sensor, a flow divider channel, and a flow amplification circuit. Based on a gas mass flow meter, a regulating valve and a PID control circuit are added to form an MFC. The gas outlet flow rate range is 0–1000 ml / min. A flow meter group is formed using three gas flow meters with different ranges: 0–100 ml / min, 0–500 ml / min, and 0–1000 ml / min. The different ranges are automatically switched by a pneumatic valve via computer, and a manual valve can be installed for manual switching. The metering accuracy is better than 0.2%FS. At the same time, the leachate collected by the leachate collector 540 is measured by an electronic balance. The balance used in this embodiment has a maximum range of 220g and an accuracy of 0.001g. It has a standard interface to connect to a computer and can collect the amount of liquid discharged in real time and calculate the liquid flow rate. Step 7: End the experiment. After the high-temperature, high-pressure gas-water-rock reaction experiment is completed, turn off the power switches of the high-temperature, high-pressure visible reactor 100, gas booster pump 330, constant speed and constant pressure pump 360, and back pressure tracking pump 530. After standing for half an hour, slowly reduce the inlet displacement pressure and outlet displacement pressure, while simultaneously reducing the confining pressure, always maintaining the confining pressure higher than the displacement pressure. After unloading to atmospheric pressure, remove the rock sample from the high-temperature, high-pressure visible reactor 100 to end the experiment. Collect the waste liquid and waste gas that flowed into the waste liquid and waste gas collection bottle after passing through the rock sample during the experiment. The used permeate medium is discharged through the discharge pipe into the waste liquid and waste gas collection bottle for unified recycling and treatment.

[0046] This application also provides a method for testing the proppant conductivity of multiphase media using the above-mentioned high-temperature and high-pressure gas-water-rock reaction proppant diversion device, including the following steps: Step 1: Assemble the API flow chamber 210 and place it between the two parallel plates of the hydraulic frame. Apply proppant to the API flow chamber 210 at a concentration of 10-15 kg / m³. 2 API stands for American Petroleum Institute, and it implements its standards. Step 2: Use a PID-controlled hydraulic press 230 to perform pressure stabilization debugging on the API guide channel of the API guide chamber 210 with different closing pressures. Apply different closing pressures to the API guide channel according to the experimental requirements and stabilize the pressure for more than 10 minutes according to closed-loop control. Install the first differential pressure transmitter 440 connected to both ends of the API guide chamber 210. The first differential pressure transmitter 440 is used to monitor the displacement pressure difference between the inlet end and the outlet end of the displacement fluid at both ends of the API guide chamber 210. The maximum static pressure it can monitor is 70MPa, and the pressure difference monitoring range is 0~600kPa. Step 3: After evacuating the API guide channel of the API guide chamber 210 using the vacuum pump 620 of the vacuum system for more than half an hour, perform multi-point liquid inlet saturation. Step 4: Activate the gas injection device of the gas-liquid injection system, and pump the gas medium in the gas cylinder 310 into the input gas pipeline through the gas booster pump 330 and the constant speed and constant pressure pump 360; activate the liquid injection device of the gas-liquid injection system, and pump the aqueous solution medium in the liquid reservoir 390 into the liquid pipeline through the constant speed and constant pressure pump 360 and the pipeline; monitor the pressure in the input pipeline after the medium is added through the upstream pressure gauge; after the permeation medium enters the input pipeline, monitor the pressure in the gas pipeline and liquid pipeline after the gas medium and liquid medium are added through the pressure gauge; after the aqueous solution medium enters the liquid pipeline, turn on the steam generator 391 to heat the medium to simulate the temperature of the permeation medium within the formation depth; Step 5: After the temperature and pressure of the permeation medium are constant, open the control valve downstream of the steam generator 391 to allow the permeation medium to pass through the proppant fissures in the API flow chamber 210. Use the back pressure tracking pump 530 of the gas-liquid collection system to adjust the different displacement flow rates through the API flow chamber 210. The flow rate range is designed to be 1.0~3.0 ml / min according to the experimental requirements. The pressure change of the permeating medium inside API flow chamber 210 is calculated using the following formula. : ; In the formula, The porosity of the rock sample in API flow chamber 210; The dynamic viscosity of the permeating medium. The apparent fluid velocity of the permeating medium inside the API flow chamber 210. The pore size of the rock sample in API flow chamber 210. The length of the seepage path of the permeating medium inside the API flow chamber 210. The density of the permeating medium inside the API flow chamber 210; Step 6: Calculate the conductivity of the rock sample in API flow chamber 210 using the following formula. and effective penetration rate ; ; ; In the formula, Indicates the flow rate of the permeating medium. This indicates the cross-sectional area of ​​the permeating medium. For the pressure change of the permeation medium inside API flow chamber 210; The dynamic viscosity of the permeating medium. The aperture of the rock sample in API flow chamber 210; Step 7: End the experiment. After the experiment is completed, close all valves, drain all gas and liquid, and clean the intermediate pressure vessel 380 and the API flow chamber 210.

[0047] This application also provides a test method for conducting single-phase medium permeation tests using the above-mentioned high-temperature and high-pressure gas-water-rock reaction proppant diversion device, including the following steps: Select the permeation medium; if a gaseous medium is used, turn on the gas injection device of the gas-liquid injection system, and pump the gaseous medium in the gas cylinder 310 into the gas pipeline through the gas booster pump 330 and the constant speed and constant pressure pump 360; if an aqueous solution medium is used, turn on the liquid injection device, and pump the aqueous solution medium in the liquid reservoir 390 into the liquid pipeline through the constant speed and constant pressure pump 360 and the pipeline; if a supercritical gas medium is used, the constant speed and constant pressure pump 360 is used to convert the gaseous medium in the gas cylinder 310 into supercritical gas through the water bath device 350 and enter the intermediate pressure vessel 380; The pressure of the permeating medium in the pipeline is monitored by a pressure gauge. After the permeating medium enters the pipeline, the steam generator 391 is turned on to heat the medium and simulate the temperature of the permeating medium within the formation depth. After the temperature and pressure of the permeating medium are constant, the control valve downstream of the steam generator 391 is opened to allow the permeating medium to pass through the rock sample in the core holder 430. At the same time, the back pressure tracking pump 530, the confining pressure tracking pump 450 of the gas-liquid collection system, and the second annular temperature heating jacket 460 on the outer wall of the core holder 430 are used to adjust the pressure and temperature inside the core holder 430. During the experiment, the sound wave transmitter 480 emits sound waves that pass through the core holder 430 and are received by the sound wave receiver 490 to monitor the seepage evolution law of the permeating medium in the rock sample. During the experiment, the second nuclear magnetic resonance spectrometer 470 is used to perform nuclear magnetic resonance T2 measurement to visually show the influence of the seepage reaction process on the rock pore throat structure. This application also provides a test method for conducting multiphase media displacement tests using the above-mentioned high-temperature and high-pressure gas-water-rock reaction proppant diversion device, including the following steps: If gas is used to replace the aqueous solution medium, the aqueous solution medium in the reservoir 390 is first pumped into the liquid pipeline through the constant speed and constant pressure pump 360 and pipeline of the liquid injection device to enter the core holder 430 for single-phase medium permeation of the aqueous solution medium. After the permeation is completed, the liquid injection device is closed and the gas injection device is turned on to pump the gas medium in the gas cylinder 310 into the gas pipeline through the gas booster pump 330 and constant speed and constant pressure pump 360 to enter the core holder 430 for gas medium to replace the aqueous solution medium. If gas is used to replace the supercritical gas medium, the constant speed and pressure pump 360 of the liquid injection device first converts the gas medium in the gas cylinder 310 into supercritical gas through the water bath device 350 and enters the intermediate pressure vessel 380 and then into the core holder 430 for single-phase medium permeation of the supercritical gas medium. After the permeation is completed, the liquid injection device is closed and the gas injection device is opened. The gas booster pump 330 and the constant speed and pressure pump 360 pump the gas medium in the gas cylinder 310 into the gas pipeline and into the core holder 430 for gas medium to replace the supercritical gas medium. If an aqueous solution is used to replace the gas medium, the gas injection device first pumps the gas medium in the gas cylinder 310 into the gas pipeline through the gas booster pump 330 and the constant speed and constant pressure pump 360 to enter the core holder 430 for single-phase medium permeation of the gas medium. After the permeation is completed, the gas injection device is closed, and the constant speed and constant pressure pump 360 and pipeline of the liquid injection device are turned on to pump the aqueous solution medium in the liquid reservoir 390 into the core holder 430 to replace the aqueous solution medium. If an aqueous solution is used to replace the supercritical gas medium, the constant speed and pressure pump 360 of the liquid injection device is used first to convert the gas medium in the gas cylinder 310 into supercritical gas through the water bath device 350 and enter the intermediate pressure vessel 380 into the core holder 430 for single-phase medium permeation of the supercritical gas medium. After the permeation is completed, the liquid injection device is closed, and the constant speed and pressure pump 360 and pipeline of the liquid injection device are turned on to pump the aqueous solution medium in the reservoir 390 into the core holder 430 for the aqueous solution medium to replace the supercritical gas medium. If supercritical gas is used to replace the gas medium, the gas injection device first pumps the gas medium in the gas cylinder 310 into the gas pipeline through the gas booster pump 330 and the constant speed and constant pressure pump 360 to carry out single-phase medium permeation of the gas medium. After the permeation is completed, the gas medium delivery system is shut off, and the constant speed and constant pressure pump 360 of the liquid injection device is turned on to convert the gas medium in the gas cylinder 310 into supercritical gas through the water bath device 350 and enter the intermediate pressure vessel 380 into the core holder 430 to carry out supercritical gas medium to replace the gas medium. If a supercritical gas medium is used to replace the aqueous medium, the constant speed and pressure pump 360 of the liquid injection device and the pipeline are first turned on to pump the aqueous medium in the reservoir 390 into the core holder 430 for single-phase medium permeation of the aqueous medium. After the permeation is completed, the liquid injection device is turned off, and the constant speed and pressure pump 360 of the liquid injection device is turned on to convert the gas medium in the gas cylinder 310 into supercritical gas through the water bath device 350 and enter the intermediate pressure vessel 380 into the core holder 430 for supercritical gas medium to replace the aqueous medium. Similarly, during the experiment, the acoustic wave transmitters 480 and acoustic wave receivers 490 on both sides of the core holder 430 were used to monitor the displacement evolution of the permeable medium in the rock sample in the core holder 430, and the second nuclear magnetic resonance spectrometer 470 was used to characterize the changes in the rock pore throat structure during the displacement process.

[0048] In this process, a gas-liquid injection system is used to pump gas, liquid, gas-liquid mixture, or gas-liquid-solid mixture into the core holder 430. A gas-liquid collection system receives and measures the gas, liquid, gas-liquid mixture, or gas-liquid-solid mixture from the core holder 430. Then, the permeability of the rock sample in the core holder 430 is calculated using the following formula. : ; In the formula, Porosity of the rock sample in core holder 430; This is the maximum aperture of the rock sample in the core holder 430; The fractal dimension characterizing the pore size distribution of rock samples in core holder 430. The fractal dimension characterizing the porosity of rock samples in core holder 430; D The fractal dimension of the pore shape; Fractal dimension of pore size distribution of rock samples in core holder 430 The fractal dimension of the pore tortuosity of rock samples in core holder 430 The calculation formula is: ; ; in, This is the minimum aperture of the rock sample in the core holder 430; This represents the straight-line length of the pore channels in the core holder; The equivalent diameter of the fluid cross section inside the core holder 430; The tortuosity of the rock sample in core holder 430; the tortuosity of the rock sample in core holder 430. Calculate using the following formula: ; In the formula, This indicates the number of pore channels within the rock sample in the core holder 430; and The X and Y axes represent the position coordinates of the pore channels in the rock sample, respectively. The coordinate system is based on the center of the rock sample inlet of the core holder as the origin, and the direction of fluid flow is the positive X-axis.

[0049] When a gas, liquid, gas-liquid mixture, or gas-liquid-solid mixture is pumped into the core holder 430 using a gas-liquid injection system, the emitted sound waves pass through the rock sample inside the core holder 430 and are received. Nuclear magnetic resonance (NMR) processing is then performed on the rock sample inside the core holder 430, and the number of pore throats in the rock sample inside the core holder 430 is calculated using the following formula. With fractal dimension The relationship between them: ; In the formula: and These are the longitudinal relaxation time and the transverse relaxation time of nuclear magnetic resonance, respectively. Indicates in a specific The magnitude of the increase in the volume of the hole below; This indicates the surface of the rock sample inside the core holder 430. Relaxation strength; ρ is the density of the rock sample; Let be the transverse relaxation time at the i-th orifice throat; According to the relaxation time of nuclear magnetic resonance: ; In the formula, This refers to the transverse relaxation mechanism under surface relaxation. This refers to the transverse relaxation mechanism under free relaxation. This represents the transverse relaxation mechanism under diffusion relaxation. This indicates the surface of the rock sample inside the core holder 430. Relaxation strength; S This indicates the surface area of ​​the rock sample pores inside the core holder 430. V This indicates the pore volume of the rock sample inside the core holder 430; Indicates the gyromagnetic ratio of an atom; Indicates the magnetic field gradient; Indicates the echo interval time; The diffusion coefficient of the fluid passing through the core holder is calculated using the following formula: ; In the formula, Here, Boltzmann's constant is 1.38065 × 10⁻⁶. 23 , Temperature inside the core holder; The viscosity of the fluid passing through the core holder 430, The diameter of the proppant particles in the fluid passing through the core holder.

[0050] This application also provides a test method for core porosity testing using the aforementioned high-temperature, high-pressure gas-water-rock reaction proppant diversion device, comprising the following steps: Turn on the gas injection device and use the gas booster pump 330 to pump the nitrogen in the gas tank 400 into the fixed container 410 through the gas pipeline. After the pressure stabilizes, turn off the gas injection device. After the upstream pressure stabilizes, obtain the core porosity in the porosity measurement sample chamber 420. This application also provides a test method for core permeability testing using the aforementioned high-temperature, high-pressure gas-water-rock reaction proppant diversion device, including the following steps: If a core permeability test is to be performed, the gas injection device is turned on, and the first gas in the gas cylinder 310 is pumped into the first intermediate pressure vessel 380, the steam generator 391, and the core holder 430 through the gas pipeline using the gas booster pump 330. After the pressure stabilizes, the second gas in the other gas cylinder 310 is pumped into the water bath device 350 and the first intermediate pressure vessel 380 through the gas pipeline using the constant speed and constant pressure pump 360 to increase the pressure in the pipeline until the target pressure is reached. After the pressure stabilizes, the gas injection device is turned off, and then the input valve at one end of the core holder 430 is opened. The gas is automatically flowed from the upstream to the downstream of the core holder 430 through the pressure difference between the upstream and downstream pipelines until the pressures of the upstream and downstream are equal. If a core fluid permeability test is to be performed, the liquid injection device is turned on, and the liquid medium in the reservoir 390 is pumped into the input pipe and the first intermediate pressure vessel 380 through the aqueous solution delivery pipe using the constant speed and constant pressure pump 360. After the pressure stabilizes, the liquid injection device is turned off, and then the input valve at one end of the core holder 430 is opened. The gas is automatically flowed from the upstream of the core holder 430 to the downstream until the pressures of the upstream and downstream are equal through the pressure difference between the upstream and downstream pipes. If a core supercritical gas permeability test is to be performed, the constant speed and pressure pump 360 of the liquid injection device is turned on to convert the gas medium in the gas cylinder 310 into supercritical gas through the water bath device 350 and enter the third intermediate pressure vessel 380. After the pressure stabilizes, the constant speed and pressure pump 360 is used again to pump the supercritical gas into the pipeline through the pipeline to increase the pressure in the pipeline until the target pressure is reached. After the pressure stabilizes, the input valve at one end of the core holder 430 is opened to allow the supercritical gas to enter the core holder 430. Through the pressure difference between the upstream and downstream pipelines, the gas automatically flows from the upstream of the core holder 430 to the downstream until the pressures of the upstream and downstream are equal.

[0051] The proppant conduction device, testing system, and testing method provided in this application for high-temperature and high-pressure gas-water-rock reaction can simulate water-rock reaction experiments, gas-water-rock reaction experiments, the conduction capacity of propped fractures, seepage, and displacement processes under high-temperature and high-pressure conditions. It can be used to study the modification of rock pore characteristics and seepage mechanisms. It can realize single-phase medium water-rock reaction experiments and multi-phase medium gas-water-rock reaction experiments under high-temperature and high-pressure conditions, realize single-phase medium proppant conduction experiments and multi-phase medium proppant conduction experiments under high-temperature and high-pressure conditions, and realize the permeation of various types of permeable media under high-temperature and high-pressure conditions. This technology enables the displacement of multiphase and multiple media under high temperature and high pressure environments, and the measurement of permeability of various permeable media in core samples. It also meets the requirements of deep thermal fluid activity and the interaction between rock masses and gas, aqueous solution media, or supercritical gases (CO2, HS2, etc.) under high temperature and high pressure formation conditions during resource development. It explores the interaction mechanism between rock masses and reaction media, saves manpower, overcomes the problems of low testing accuracy and long experimental cycle, and improves the testing accuracy of permeability and conductivity. This facilitates the revelation of fracturing fluid migration mechanism and proppant transport mechanism in fracturing fractures, and strongly supports the development of field fracturing technology.

[0052] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A proppant diversion device under high temperature and high pressure gas-water-rock reaction, characterized in that, include: A gas-water-rock reaction system, including a high-temperature and high-pressure visible reactor, is used to mix gas and liquid phases with rock samples in the high-temperature and high-pressure visible reactor and react them under high temperature and high pressure. The proppant diversion system includes an API diversion chamber for introducing fracturing fluid into the API diversion chamber containing a rock sample at a preset pressure and temperature to test its diversion capacity. A porosity and permeability testing system includes a core holder for passing a permeating medium through a rock sample held in the core holder at a preset pressure and temperature to detect the porosity of the rock sample. A gas-liquid injection system is used to transport permeating media through pipelines through the high-temperature and high-pressure visible reactor of the gas-water-rock reaction system, the API flow chamber of the proppant flow system, and the rock sample in the core holder of the porosity and permeability characteristic testing system; The acoustic wave and nuclear magnetic resonance system is used to emit acoustic waves that pass through the rock sample in the core holder and receive them, and to perform nuclear magnetic resonance processing on the rock sample in the core holder. A gas-liquid collection system is connected to the gas-water-rock reaction system, the proppant diversion system, and the porosity-permeability testing system, respectively, to receive and measure the gas and liquid phases. A vacuum system is connected to the gas-water-rock reaction system, the proppant diversion system, and the porosity-permeability testing system for evacuation.

2. The proppant diversion device under high temperature and high pressure gas-water-rock reaction according to claim 1, characterized in that, The gas-water-rock reaction system includes a reactor sampler and a microscopic imaging system connected to the high-temperature and high-pressure visual reactor. The outer wall of the high-temperature and high-pressure visual reactor is fitted with a first annular temperature heating jacket. The high-temperature and high-pressure visual reactor is connected to a pH sensor for detecting its internal pH value and a confining pressure tracking pump. One side of the high-temperature and high-pressure visual reactor is connected to the gas-liquid injection system, and the other side is connected to the gas-liquid collection system and the vacuum system.

3. The proppant diversion device under high temperature and high pressure gas-water-rock reaction as described in claim 1, characterized in that, The proppant diversion system includes a fracturing fluid stirring container connected to the API diversion chamber and a hydraulic press with a fracturing chamber. The fracturing fluid stirring container is connected to the gas-liquid injection system, and the API diversion chamber is connected to the gas-liquid collection system and the vacuum system, respectively.

4. The proppant diversion device under high temperature and high pressure gas-water-rock reaction according to claim 1, characterized in that, The gas-liquid injection system includes a gas injection device and a liquid injection device. The gas injection device includes multiple gas cylinders and at least one air compressor. At least one gas cylinder is connected to the high-temperature and high-pressure visible reactor, the API flow chamber, and the core holder via a pipeline sequentially equipped with a pressure regulating valve, a gas booster pump, and a gas storage container. The air compressor is connected to the gas storage container. At least one gas cylinder is connected to the high-temperature and high-pressure visible reactor, the API flow chamber, and the core holder via a pipeline sequentially equipped with a water bath device and a constant-speed and constant-pressure pump. At least one intermediate pressure vessel is connected in parallel between the constant-speed and constant-pressure pump and the high-temperature and high-pressure visible reactor, the API flow chamber, and the core holder. The liquid injection device includes a liquid reservoir and a steam generator. The liquid reservoir is connected to the constant-speed and constant-pressure pump, and the steam generator is connected in parallel with the intermediate pressure vessel.

5. The proppant diversion device under high temperature and high pressure gas-water-rock reaction according to claim 2, characterized in that, The porosity-permeability testing system includes a gas tank, a fixed container, a porosity measurement sample chamber, a first differential pressure transmitter, and a confining pressure tracking pump. The core holder is equipped with a second annular heating jacket for heating the held rock sample. The gas tank is connected to the fixed container, the porosity measurement sample chamber, and the core holder. The confining pressure tracking pump is connected to the core holder. One end of the fixed container, the porosity measurement sample chamber, and the core holder is connected to the gas-liquid injection system, and the other end is connected to the gas-liquid collection system and the vacuum system.

6. The proppant diversion device under high temperature and high pressure gas-water-rock reaction according to claim 1, characterized in that, The gas-liquid collection system includes a condenser, a back pressure valve, a back pressure tracking pump, and a leachate collector connected in sequence via pipelines. The condenser and the back pressure tracking pump are respectively connected to both ends of a gas-liquid separator. One end of the gas-liquid separator is connected in sequence to a dryer and a gas flow meter, and the other end is connected to a pressure relief valve and a gas sampler. The condenser is connected to the gas-water-rock reaction system, the proppant diversion system, and the porosity-permeability testing system.

7. The proppant diversion device under high temperature and high pressure gas-water-rock reaction according to claim 1, characterized in that, The acoustic wave and nuclear magnetic resonance system includes a nuclear magnetic resonance spectrometer, multiple acoustic wave transmitters and multiple acoustic wave receivers. The core holder is located inside the test chamber of the nuclear magnetic resonance spectrometer, and the multiple acoustic wave transmitters and multiple acoustic wave receivers are respectively connected to both sides of the core holder.

8. The proppant diversion device under high temperature and high pressure gas-water-rock reaction according to claim 1, characterized in that, The vacuum system includes a vacuum container and a vacuum pump connected in sequence. The vacuum container is connected to the gas-water-rock reaction system, the proppant diversion system and the porosity-permeability testing system, respectively.

9. The test method for the proppant diversion device under high temperature and high pressure gas-water-rock reaction according to any one of claims 1 to 8, characterized in that, It includes the following steps: Select appropriate rock samples or powdered rock samples and load them into a high-temperature, high-pressure visual reactor, API flow chamber, and core holder; Vacuum systems were used to evacuate the high-temperature and high-pressure visual reactor, the API flow chamber, and the core holder, respectively. Gas, liquid, gas-liquid mixture or gas-liquid-solid mixture are selectively injected into high-temperature and high-pressure visual reactors, core holders and API flow chambers using a gas-liquid injection system. The gas-liquid collection system is used to selectively receive and measure the gas and liquid phases of the gas-water-rock reaction system, the proppant diversion system, and the porosity-permeability testing system.

10. The test method for the proppant diversion device under high temperature and high pressure gas-water-rock reaction according to claim 9, characterized in that; When a gas, liquid, gas-liquid mixture, or gas-liquid-solid mixture is injected into the core holder using a gas-liquid injection system, the emitted sound waves are received after passing through the rock sample inside the core holder, and the rock sample inside the core holder is subjected to nuclear magnetic resonance processing.

11. The test method for the proppant diversion device under high temperature and high pressure gas-water-rock reaction according to claim 9, characterized in that, When a gas-liquid-solid mixture is introduced into the API flow chamber at a preset temperature and pressure using a gas-liquid injection system, the back pressure tracking pump connected to the API flow chamber in the gas-liquid collection system is used to regulate the fluid flow rate through the API flow chamber, and the pressure change of the permeating medium in the API flow chamber is calculated. and the conductivity of the rock samples in the API flow chamber. and effective penetration rate .

12. The test method for the proppant diversion device under high temperature and high pressure gas-water-rock reaction according to claim 10, characterized in that, Gas, liquid, gas-liquid mixture, or gas-liquid-solid mixture are pumped into the core holder using a gas-liquid injection system; the gas, liquid, gas-liquid mixture, or gas-liquid-solid mixture in the core holder is received and metered using a gas-liquid collection system, and then the permeability of the rock sample in the core holder is calculated. .

13. The test method for the proppant diversion device under high temperature and high pressure gas-water-rock reaction according to claim 10, characterized in that, When a gas, liquid, gas-liquid mixture, or gas-liquid-solid mixture is pumped into a core holder using a gas-liquid injection system, the emitted sound waves pass through the rock sample inside the core holder and are received. Nuclear magnetic resonance (NMR) processing is then performed on the rock sample inside the core holder, and the number of pore throats in the rock sample within the core holder is used as a basis for further analysis. With fractal dimension Calculate the number of pore throats in rock samples based on the relationship between them. .

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