Gas hydrate percolation fracturing comprehensive measuring device

Abstract

The application discloses a kind of gas hydrate percolation fracturing comprehensive measuring device, including low-temperature high-pressure reaction kettle, high-pressure fluid propulsion system, high-pressure fluid collection system, temperature control system, axial pressure propulsion system and data acquisition system;Low-temperature high-pressure reaction kettle is placed with the sediment sample made with hollow structure and is in the shape of cylinder, high-pressure fluid propulsion system is connected with low-temperature high-pressure reaction kettle and quantitative injection high-pressure fluid to sediment sample inside, high-pressure fluid collection system is connected with low-temperature high-pressure reaction kettle and is used to regulate and control low-temperature high-pressure reaction kettle pressure and effluent gas rate;Low-temperature high-pressure reaction kettle is located in temperature control system;Axial pressure propulsion system is connected with low-temperature high-pressure reaction kettle and provides hydraulic thrust for its inside.This device uses hollow structure hydrate-containing sediment as test sample, by internal injection, exhaust in the way of gas, complete percolation and fracturing etc.Test, realize to hydrate-containing sediment fracturing, percolation etc.Process in-situ measurement.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas hydrate macroscopic qualitative and quantitative characterization equipment, and particularly relates to a gas hydrate seepage and fracturing comprehensive measuring device. BACKGROUND

[0002] Natural gas hydrate is a non-stoichiometric cage-shaped crystal substance formed by water and small molecule gas such as methane. It is widely distributed in the sediment layer of the continental shelf and the permafrost layer of the plateau. Since the carbon content stored in the natural gas hydrate is twice that of other carbon sources, the extraction of potential hydrocarbon from the natural gas hydrate has attracted more and more attention. Therefore, it is also regarded as an important clean energy in the future.

[0003] Since the exploitation of natural gas hydrate cannot be separated from the comprehensive and in-depth study of the mechanical properties and fluid seepage properties of hydrate-containing sediments, the stable occurrence of natural gas hydrate requires a high-pressure and low-temperature environment, and at the same time, the mechanical properties of the sediments are greatly affected by the hydrate saturation. Therefore, the mechanical and seepage properties test of the hydrate-containing sediments is carried out at normal temperature and pressure, which needs a complex temperature, pressure and fluid propulsion system to support. At present, the measurement of the mechanical properties and fluid seepage properties of the hydrate-containing sediments mainly relies on the pseudo-triaxial mechanical measuring device. In the device, the solid cylindrical core sample is placed in the center of the high-pressure and low-temperature reaction kettle, the sample side wall is wrapped by rubber skin, and the upper end face is covered by the end cover connected with the high-pressure gas inlet hole. During the measurement, liquid water is injected into the cavity of the high-pressure and low-temperature reaction kettle to simulate the confining pressure, and the piston is used to simulate the axial pressure of the sample. The device can measure the compressive strength and permeability of the sample, but cannot simulate the fracturing effect on the sample, and has certain limitations. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art, and provides a gas hydrate seepage and fracturing comprehensive measuring device.

[0005] The application is realized by the following technical scheme: a gas hydrate seepage fracturing comprehensive measuring device, comprising a low-temperature high-pressure reaction kettle, a high-pressure fluid propelling system, a high-pressure fluid collecting system, a temperature control system, an axial pressure propelling system and a data acquisition system; the low-temperature high-pressure reaction kettle is internally placed with a sediment sample made into a hollow structure and in a cylindrical shape; the high-pressure fluid propelling system is connected with the low-temperature high-pressure reaction kettle and quantitatively injects high-pressure fluid into the interior of the sediment sample; the high-pressure fluid collecting system is connected with the low-temperature high-pressure reaction kettle and is used for regulating the pressure and the outflow gas rate in the low-temperature high-pressure reaction kettle; the low-temperature high-pressure reaction kettle is located in the temperature control system; the axial pressure propelling system is connected with the low-temperature high-pressure reaction kettle and provides hydraulic thrust for the interior of the low-temperature high-pressure reaction kettle; and the data acquisition system is respectively connected with the low-temperature high-pressure reaction kettle, the high-pressure fluid propelling system, the high-pressure fluid collecting system, the temperature control system and the axial pressure propelling system and is used for collecting the data of each structure.

[0006] The low-temperature high-pressure reaction kettle is a cylindrical barrel structure with an open top, and the top is sealed by an end cover; the axial pressure propelling system comprises a hydraulically driven piston rod which can move up and down, the piston rod is installed on the end cover, the lower end surface of the piston rod is in direct contact with the upper end surface of the sediment sample, and the interior of the piston rod is provided with a hollow high-pressure fluid pipeline; the wall surface of the low-temperature high-pressure reaction kettle is provided with two high-pressure resistant observation windows, one observation window is provided with a light source, and the other observation window is externally provided with a camera with a lens aligned with the sediment sample; the hollow structure of the sediment sample is a cylindrical structure and is coaxial with the sediment sample, and the hollow structure of the sediment sample is communicated with the high-pressure fluid pipeline. The lower end surface of the piston rod is used for fixing or applying axial pressure to the sediment sample; the high-pressure fluid pipeline is used for injecting high-pressure fluid into the interior of the sediment sample.

[0007] The inner wall surface of the hollow structure of the sediment sample is provided with a stainless steel sand prevention net, the bottom of the low-temperature high-pressure reaction kettle is centrally provided with a base for placing the sediment sample, and the center of the base is provided with a positioning blind hole for fixing the stainless steel sand prevention net.

[0008] The outer diameter of the stainless steel sand prevention net is smaller than the inner diameter of the high-pressure fluid pipeline. When the lower end surface of the piston rod continuously presses down, the stainless steel sand prevention net can be inserted into the high-pressure fluid pipeline in the interior of the piston rod to prevent bending.

[0009] The observation window is made of sapphire or resin glass.

[0010] The end cover is respectively provided with an exhaust pipeline, an auxiliary air inlet pipeline and a hydraulic cylinder barrel; the piston rod comprises a piston, a piston rod body and a piston rod lower end face, the upper end of the piston rod body is fixed with the piston, the lower end of the piston rod body is fixed with the piston rod lower end face, the piston rod lower end face is located in the low-temperature high-pressure reaction kettle and directly contacts with the upper end face of the sediment sample; the axial pressure propulsion system further comprises a high-pressure horizontal flow pump and a hydraulic pipeline connected with the hydraulic cylinder barrel and used for inputting hydraulic pressure to drive the piston to move up and down, the high-pressure horizontal flow pump is connected with the hydraulic pipeline; the high-pressure fluid propulsion system comprises a high-pressure gas source, three high-pressure fluid propulsion pipelines, a high-pressure fluid storage device, a numerical control pressure reducing valve, a high-pressure propulsion pump, a plurality of explosion-proof valves, a differential pressure sensor and a vacuum pump, the explosion-proof valves are respectively arranged on the three high-pressure fluid propulsion pipelines; one end of the three high-pressure fluid propulsion pipelines is connected with the high-pressure fluid storage device, and the other end of the three high-pressure fluid propulsion pipelines is respectively connected with the high-pressure fluid pipeline, the exhaust pipeline and the auxiliary air inlet pipeline; the high-pressure gas source is connected with the high-pressure fluid pipeline and the exhaust pipeline; the differential pressure sensor and the numerical control pressure reducing valve are installed on the pipeline between the high-pressure fluid pipeline and the high-pressure gas source, a first pipeline connected with the high-pressure fluid storage device is connected to the pipeline between the numerical control pressure reducing valve and the high-pressure gas source; the pipeline of the differential pressure sensor is divided into two parts, one part is connected with the high-pressure fluid pipeline, and the other part is connected with the exhaust pipeline; a second pipeline connected with the high-pressure fluid storage device is connected with the high-pressure fluid pipeline and the auxiliary air inlet pipeline through the high-pressure propulsion pump, the vacuum pump is connected with the auxiliary air inlet pipeline; a third pipeline connected with the high-pressure fluid storage device is connected with the exhaust pipeline; the high-pressure fluid collection system comprises a back pressure valve, a dryer and a flow meter connected in sequence, and the back pressure valve is connected to the pipeline between the differential pressure sensor and the exhaust pipeline. The axial pressure propulsion system is used for providing hydraulic thrust to the piston rod and detecting axial displacement of the piston.

[0011] The temperature control system is a low-temperature constant-temperature air bath. The low-temperature constant-temperature air bath is used for providing a constant temperature environment for the low-temperature high-pressure reaction kettle.

[0012] The data acquisition system is connected with the flow meter, the low-temperature high-pressure reaction kettle, the high-pressure fluid storage device, the high-pressure horizontal flow pump, the high-pressure propulsion pump, the numerical control pressure reducing valve, the high-pressure gas source, the camera and the auxiliary air inlet pipeline respectively.

[0013] The high-pressure fluid is one or more of methane, nitrogen and carbon dioxide.

[0014] Compared with the prior art, the advantages of the present application are as follows:

[0015] (1) The device can realize in-situ measurement of processes such as fracturing and seepage of hydrate-bearing sediments in a high-pressure low-temperature environment;

[0016] (2) The device uses a hollow structure of hydrate deposit as a test sample, and completes seepage and fracturing tests by injecting gas into the interior and discharging gas from the exterior, thereby avoiding the wall effect between the deposit and the reactor in the traditional single-side seepage and fracturing test, i.e., part of the gas passes through the gap between the deposit and the reactor instead of passing through the interior of the sample, and the measurement accuracy is improved.

[0017] (3) The device integrates the high-pressure fluid pipeline into the piston rod, greatly simplifies the gas path and shaft pressure structure in the reactor, and avoids the error caused by the complex structure.

[0018] (4) The device proposes to symmetrically arrange two high-pressure-resistant observation windows and cameras on the wall of the reactor, so that the deformation during seepage and fracturing can be observed in real time, and whether the deposit has creep or fracturing can be determined together with the piston displacement and the internal and external differential pressure of the deposit. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a structural schematic diagram of an embodiment of the present application;

[0020] Fig. 2 is a structural schematic diagram of a low-temperature high-pressure reactor of an embodiment of the present application.

[0021] The meanings of the reference signs in the drawing are as follows: 1, low-temperature high-pressure reactor; 101, high-pressure fluid pipeline; 102, hydraulic pipeline; 103, exhaust pipeline; 104, deposit sample; 105, sand prevention net; 106, base; 107, hydraulic cylinder barrel; 108, piston; 109, auxiliary gas inlet pipeline; 110, end cover; 111, lower end surface of piston rod; 112, wall of low-temperature high-pressure reactor; 113, positioning blind hole; 2, temperature control system; 3, high-pressure gas source; 4, high-pressure horizontal flow pump; 5, high-pressure propelling pump; 6, differential pressure sensor; 7, numerical control pressure reducing valve; 8, high-pressure fluid storage device; 9, back pressure valve; 10, dryer; 11, flowmeter; 12, data acquisition system; 13, vacuum pump; 14, camera; 151, first pipeline; 152, second pipeline; 153, third pipeline; 16, explosion-proof valve. DETAILED DESCRIPTION

[0022] The content of the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0023] EMBODIMENT

[0024] REFERENCE Figs. 1-2The utility model provides a kind of gas hydrate percolation fracturing comprehensive measuring device, including low-temperature high-pressure reactor 1, high-pressure fluid propulsion system, high-pressure fluid collection system, temperature control system 2, axial pressure propulsion system and data acquisition system 12;Low-temperature high-pressure reactor 1 is placed with the sediment sample 104 made into hollow structure and presents cylindrical body, high-pressure fluid propulsion system is connected with low-temperature high-pressure reactor 1 and quantitative injection high-pressure fluid to sediment sample 104 inside, high-pressure fluid collection system is connected with low-temperature high-pressure reactor 1 and is used to regulate and control low-temperature high-pressure reactor 1 inside pressure and effluent gas rate;Low-temperature high-pressure reactor 1 is located in temperature control system 2;Axial pressure propulsion system is connected with low-temperature high-pressure reactor 1 and provides hydraulic thrust for its inside, data acquisition system 12 is connected with low-temperature high-pressure reactor 1, high-pressure fluid propulsion system, high-pressure fluid collection system, temperature control system 2, axial pressure propulsion system respectively and is used to collect the data of each structure.

[0025] Low-temperature high-pressure reactor 1 is the cylindrical structure of top opening, and its top is sealed by end cover 110;The axial pressure propulsion system includes the hydraulic drive piston rod that can move up and down, and the piston rod is installed on the end cover 110, the lower end surface 111 of the piston rod is in direct contact with the upper end surface of the sediment sample 104, and the piston rod is internally provided with a hollow high-pressure fluid pipeline 101;The wall surface 112 of the low-temperature high-pressure reactor is provided with two high-pressure resistant observation windows, one observation window is provided with a light source, and the other observation window is externally provided with a camera 14 with a lens aligned with the sediment sample 104;The hollow structure of the sediment sample 104 is a cylindrical structure and coaxial with the sediment sample 104, and the hollow structure of the sediment sample 104 is communicated with the high-pressure fluid pipeline 101.The lower end surface 111 of the piston rod is used to fix or apply axial pressure to the sediment sample 104;The high-pressure fluid pipeline 101 is used to inject high-pressure fluid into the inside of the sediment sample 104.

[0026] The inner wall surface of the hollow structure of the sediment sample 104 is provided with a stainless steel sand prevention net 105, and the bottom of the low-temperature high-pressure reactor 1 is centrally provided with a base 106 for placing the sediment sample 104, and the base 106 is centrally provided with a positioning blind hole 113 for fixing the stainless steel sand prevention net 105.

[0027] The outer diameter of the stainless steel sand prevention net 105 is smaller than the inner diameter of the high-pressure fluid pipeline 101.When the lower end surface 111 of the piston rod continuously presses down, the stainless steel sand prevention net 105 can be inserted into the high-pressure fluid pipeline 101 inside the piston 108, to prevent bending.

[0028] The observation window is made of sapphire material or resin glass material.

[0029] The end cover 110 is respectively provided with an exhaust pipeline 103, an auxiliary air inlet pipeline 109 and a hydraulic cylinder barrel 107; the piston rod comprises a piston 108, a piston rod body and a piston rod lower end surface 111, the upper end of the piston rod body is fixed with the piston 108, the lower end of the piston rod body is fixed with the piston rod lower end surface 111, the piston rod lower end surface 111 is located in the low-temperature high-pressure reaction kettle 1 and directly contacts with the upper end surface of the deposit sample 104; the axial pressure propulsion system further comprises a high-pressure horizontal flow pump 4 and a hydraulic pipeline 102 connected with the hydraulic cylinder barrel 107 and used for inputting hydraulic pressure to drive the piston 108 to move up and down, the high-pressure horizontal flow pump 4 is connected with the hydraulic pipeline 102; the high-pressure fluid propulsion system comprises a high-pressure gas source 3, three high-pressure fluid propulsion pipelines, a high-pressure fluid storage device 8, a numerical control pressure reducing valve 7, a high-pressure propulsion pump 5, a plurality of explosion-proof valves 16, a differential pressure sensor 6 and a vacuum pump 13, the explosion-proof valves 16 are respectively arranged on the three high-pressure fluid propulsion pipelines; one end of the three high-pressure fluid propulsion pipelines is connected with the high-pressure fluid storage device 8, and the other end of the three high-pressure fluid propulsion pipelines is respectively connected with a high-pressure fluid pipeline 101, the exhaust pipeline 103 and the auxiliary air inlet pipeline 109; the high-pressure gas source 3 is connected with the high-pressure fluid pipeline 101 and the exhaust pipeline 103; the differential pressure sensor 6 and the numerical control pressure reducing valve 7 are installed on the pipeline between the high-pressure fluid pipeline 101 and the high-pressure gas source 3, a first pipeline 151 connected with the high-pressure fluid storage device 8 is connected to the pipeline between the numerical control pressure reducing valve 7 and the high-pressure gas source 3; the pipeline of the differential pressure sensor 6 is divided into two parts, one part is connected with the high-pressure fluid pipeline 101, and the other part is connected with the exhaust pipeline 103; a second pipeline 152 connected with the high-pressure fluid storage device 8 is connected with the high-pressure fluid pipeline 101 and the auxiliary air inlet pipeline 109 through the high-pressure propulsion pump 5, and the vacuum pump 13 is connected with the auxiliary air inlet pipeline 109; a third pipeline 153 connected with the high-pressure fluid storage device 8 is connected with the exhaust pipeline 103; the high-pressure fluid collection system comprises a back pressure valve 9, a dryer 10 and a flowmeter 11 connected in sequence, and the back pressure valve 9 is connected to the pipeline between the differential pressure sensor 6 and the exhaust pipeline 103. The axial pressure propulsion system is used for providing hydraulic thrust to the piston rod and detecting the axial displacement of the piston 108.

[0030] The temperature control system 2 is a low-temperature constant-temperature air bath. The low-temperature constant-temperature air bath is used for providing a constant temperature environment for the low-temperature high-pressure reaction kettle 1.

[0031] The data acquisition system 12 is connected with the flowmeter 11, the low-temperature high-pressure reaction kettle 1, the high-pressure fluid storage device 8, the high-pressure horizontal flow pump 4, the high-pressure propulsion pump 5, the numerical control pressure reducing valve 7, the high-pressure gas source 3, the camera 14 and the auxiliary air inlet pipeline 109. The data acquisition system 12 is used for collecting the temperature, pressure, flow and deposit sample 104 picture and other data of the equipment.

[0032] The high-pressure fluid is one or more of methane, nitrogen and carbon dioxide.

[0033] In this embodiment, high pressure fluid is injected into the interior of the cylindrical sand deposit sample 104 in the low temperature and high pressure reactor 1, and the sample is fractured or the permeability of the sample is measured by adjusting the fluid pressure difference between the interior and exterior of the cylindrical sand deposit sample 104. The auxiliary gas inlet pipeline 109 is used to quickly inject fluid at a set pressure into the gas phase cavity (the cavity between the inner wall of the low temperature and high pressure reactor 1 and the deposit sample 104) of the low temperature and high pressure reactor 1. The first pipeline 151 connected to the high pressure fluid storage device 8 cooperates with the numerical control pressure reducing valve 7, the high pressure propelling pump 5 and the piston rod, and mainly undertakes quantitative injection of high pressure fluid into the interior of the deposit sample 104, and completes the seepage or fracturing process of the high pressure fluid. The second pipeline 152 connected to the auxiliary gas inlet pipeline 109 cooperates with the vacuum pump 13, the numerical control pressure reducing valve 7 and the high pressure propelling pump 5, and is responsible for undertaking quick injection of gas at a certain pressure into the gas phase cavity outside the deposit sample 104 in the low temperature and high pressure reactor 1, and also can vacuumize the low temperature and high pressure reactor 1. The third pipeline 153 connected to the exhaust pipeline 103 cooperates with the numerical control pressure reducing valve 7 and the differential pressure sensor 6, and the other end of the differential pressure sensor 6 is connected to the high pressure fluid propelling pipeline, and the pipeline mainly functions to protect the differential pressure sensor 6 from too high pressure difference on both sides of the differential pressure sensor 6, and also has the function of quickly inflating the gas phase cavity outside the deposit sample 104 in the low temperature and high pressure reactor 1. The high pressure fluid collection system is connected to the exhaust pipeline 103, and the pipeline is the main exhaust pipeline of the low temperature and high pressure reactor 1, and is used to regulate the pressure in the low temperature and high pressure reactor 1 and the outflow rate of the gas in the low temperature and high pressure reactor 1.

[0034] In this embodiment, the data acquisition system 12 is a processor, which can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor or the like. The processor is the control center of the device, and connects various parts through various interfaces and lines.

[0035] The purpose of the embodiment is to provide a macroscopic quantitative measuring device for measuring the seepage creep performance of a natural gas hydrate reservoir in view of the demand of a national energy strategy, and to provide a solution for the application of a reservoir fracturing natural gas hydrate mining technology. In view of the technical problem of how to realize the fracturing experiment of the hydrate-bearing sediment, the device designs the hydrate-bearing sediment sample 104 into a hollow cylindrical shape, injects fracturing fluid into the inside of the sediment sample 104, makes the fluid seep from the inside to the outside of the sediment, and finally realizes the fracturing of the sample by lifting the differential pressure between the inside and the outside of the sediment sample 104. In the fracturing process, the axial displacement can be simulated by the axial piston 108 and measured, and the lateral deformation of the hydrate-bearing sediment sample 104, the number, distribution and size of the fractures generated by the fracturing can be observed through the pressure-resistant window of the reaction kettle. Therefore, the device can better solve the fracturing simulation of the hydrate-bearing sediment, and has important significance for the mechanical and seepage performance research of the natural gas hydrate mining and hydrate carbon storage process.

[0036] The above detailed description is a specific description of the feasible embodiment of the present application, which is not used to limit the patent scope of the present application. Any equivalent implementation or change without departing from the present application shall be included in the patent scope of the present application.

Claims

1. A comprehensive measurement device for gas hydrate seepage fracturing, characterized in that: The system includes a cryogenic high-pressure reactor, a high-pressure fluid propulsion system, a high-pressure fluid collection system, a temperature control system, an axial pressure propulsion system, and a data acquisition system. The cryogenic high-pressure reactor contains a cylindrical sediment sample with a hollow structure. The high-pressure fluid propulsion system is connected to the cryogenic high-pressure reactor and injects a quantitative amount of high-pressure fluid into the sediment sample. The high-pressure fluid collection system is connected to the cryogenic high-pressure reactor and is used to regulate the pressure inside the reactor and the outflow gas rate. The cryogenic high-pressure reactor is located within the temperature control system. The axial pressure propulsion system is connected to the cryogenic high-pressure reactor and provides hydraulic thrust to its interior. The data acquisition system is connected to the cryogenic high-pressure reactor, the high-pressure fluid propulsion system, and the high-pressure fluid collection system. The system, temperature control system, and axial pressure propulsion system are connected and used to collect data from each structure. The cryogenic high-pressure reactor is a cylindrical structure with an open top, and its top is sealed by an end cap. The axial pressure propulsion system includes a hydraulically driven piston rod that can move up and down. The piston rod is mounted on the end cap, and the lower end face of the piston rod is in direct contact with the upper end face of the sediment sample. A hollow high-pressure fluid pipeline is provided inside the piston rod. The wall of the cryogenic high-pressure reactor is provided with two high-pressure resistant observation windows. One observation window is equipped with a light source, and the other observation window is equipped with a camera with a lens aimed at the sediment sample. The hollow structure of the sediment sample is a cylindrical structure and coaxial with the sediment sample. The hollow structure of the sediment sample is connected to the high-pressure fluid pipeline.

2. The integrated measurement device for gas hydrate seepage fracturing according to claim 1, characterized in that: The hollow structure of the sediment sample is provided with a stainless steel sand-proof mesh on its inner wall. The bottom center of the low-temperature high-pressure reactor is provided with a base for placing the sediment sample. The base is provided with a positioning blind hole in the center for fixing the stainless steel sand-proof mesh.

3. The integrated measurement device for gas hydrate seepage fracturing according to claim 2, characterized in that: The outer diameter of the stainless steel sandproof mesh is smaller than the inner diameter of the high-pressure fluid pipeline.

4. The integrated measurement device for gas hydrate seepage fracturing according to claim 1, characterized in that: The observation window is made of sapphire or resin glass.

5. The integrated measurement device for gas hydrate seepage fracturing according to claim 1, characterized in that: The end caps are respectively provided with an exhaust pipe, an auxiliary air intake pipe, and a hydraulic cylinder. The piston rod includes a piston, a piston rod body, and a lower end face of the piston rod. The upper end of the piston rod body is fixed to the piston, and its lower end is fixed to the lower end face of the piston rod. The lower end face of the piston rod is located inside the low-temperature high-pressure reactor and is in direct contact with the upper end face of the sediment sample. The axial pressure propulsion system also includes a high-pressure horizontal flow pump and a hydraulic pipeline connected to the hydraulic cylinder for inputting hydraulic pressure to drive the piston up and down. The high-pressure horizontal flow pump is connected to the hydraulic pipeline. The high-pressure fluid propulsion system includes a high-pressure gas source, three high-pressure fluid propulsion pipelines, a high-pressure fluid storage device, a CNC pressure reducing valve, a high-pressure propulsion pump, an explosion-proof valve, a differential pressure sensor, and a vacuum pump. Several explosion-proof valves are provided and are respectively installed on the three high-pressure fluid propulsion pipelines. One end of each of the three high-pressure fluid propulsion pipelines is connected to the high-pressure fluid storage device, and the other end is respectively connected to the high-pressure fluid storage device. The system includes a body pipeline, an exhaust pipeline, and an auxiliary intake pipeline; the high-pressure gas source is connected to the high-pressure fluid pipeline and the exhaust pipeline respectively; the differential pressure sensor and the CNC pressure reducing valve are installed on the pipeline between the high-pressure fluid pipeline and the high-pressure gas source; the first pipeline connected to the high-pressure fluid storage device is connected to the pipeline between the CNC pressure reducing valve and the high-pressure gas source; the differential pressure sensor pipeline is split into two, one connected to the high-pressure fluid pipeline and the other connected to the exhaust pipeline; the second pipeline connected to the high-pressure fluid storage device is connected to the high-pressure fluid pipeline and the auxiliary intake pipeline respectively after passing through the high-pressure propulsion pump; the vacuum pump is connected to the auxiliary intake pipeline; the third pipeline connected to the high-pressure fluid storage device is connected to the exhaust pipeline; the high-pressure fluid collection system includes a back pressure valve, a dryer, and a flow meter connected in sequence, and the back pressure valve is connected to the pipeline between the differential pressure sensor and the exhaust pipeline.

6. The integrated measurement device for gas hydrate seepage fracturing according to claim 1, characterized in that: The temperature control system is a low-temperature constant-temperature air bath.

7. The integrated measurement device for gas hydrate seepage fracturing according to claim 5, characterized in that: The data acquisition system is connected to the flow meter, the cryogenic high-pressure reactor, the high-pressure fluid storage device, the high-pressure horizontal flow pump, the high-pressure propulsion pump, the CNC pressure reducing valve, the high-pressure gas source, the camera, and the auxiliary air intake pipeline, respectively.

8. The integrated measurement device for gas hydrate seepage fracturing according to claim 1, characterized in that: The high-pressure fluid is one or more of methane, nitrogen, and carbon dioxide.

Images