CN113933203B - Experimental device and method for measuring shale methane adsorption capacity - Google Patents
Experimental device and method for measuring shale methane adsorption capacity Download PDFInfo
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- CN113933203B CN113933203B CN202111138002.3A CN202111138002A CN113933203B CN 113933203 B CN113933203 B CN 113933203B CN 202111138002 A CN202111138002 A CN 202111138002A CN 113933203 B CN113933203 B CN 113933203B
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
- G01N7/04—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder by absorption or adsorption alone
Abstract
The invention provides an experimental device and a method for measuring shale methane adsorption capacity, wherein the experimental device comprises: the device comprises a steam generation assembly, a high-pressure methane adsorption assembly, a pressurization assembly, a vacuumizing assembly, an air inlet assembly and a data acquisition assembly; the steam generation assembly is used for adjusting the water saturation and the mineralization degree of a sample to be detected, the high-pressure methane adsorption assembly is used for containing the sample to be detected and carrying out a methane isothermal adsorption experiment, the air inlet assembly is used for inputting high-pressure methane into a sample bin of the high-pressure methane adsorption assembly so that the sample to be detected in the sample bin adsorbs the high-pressure methane, and the data acquisition assembly is used for acquiring the weight, the temperature and the pressure of the sample in the sample bin in real time so as to calculate the methane adsorption capacity of the sample to be detected; the device has the advantages of simple principle, reasonable structural design and accurate and reliable calculation result, can simulate the methane adsorption capacity of shale under actual stratum conditions more truly, and has important significance for shale gas resource evaluation and exploration and development.
Description
Technical Field
The device relates to the technical field of shale gas-containing evaluation, in particular to an experimental device and method for measuring shale methane adsorption capacity.
Background
In recent years, with the inspiration of successful commercial development of the shale gas in North America, China has obtained industrial airflow in marine-phase shale of the Orotu Wufeng group-the lower-mindsystem Longmaxi group in the Sichuan basin, and the yield of the shale gas is continuously rising. Meanwhile, important discovery and certain capacity of shale gas are obtained in some continental facies and sea-land transition phase shale layer series. However, under a complex geological background, the abundant shale gas resources in China are difficult to realize large-scale commercial exploitation and utilization. And the incompleteness of the experimental technology and the method also restricts the resource evaluation and the geological reserve calculation work of the shale gas. Shale gas resource amount calculation and favorable areas of different construction areas or construction positions preferably need to consider multiple factors, and evaluation schemes and indexes show the characteristics of diversification and refinement.
Under actual formation conditions, the occurrence state of shale gas mainly takes an adsorption state and a free state as main states, and a small amount of dissolved state exists. Research has shown that the adsorbed gas content can typically account for more than 40% of the total gas content of shale, which is one of the main parameters for evaluating the gas content of shale. Therefore, the shale methane adsorption capacity evaluation is of great significance to resource evaluation and geological reserve calculation of shale gas.
The high-pressure methane isothermal adsorption experiment is a common method for evaluating shale methane adsorption capacity and indirectly determining shale gas content, and can be applied to quantitative comparison and evaluation of different shale gas content sizes. Because the shale has strong heterogeneity, the shales of different layer systems and shales of different depths in the same layer system show great difference in TOC content, mineral composition, pore structure and the like, so that the shales have different methane adsorption capacities. Meanwhile, the temperature, pressure and presence of moisture under actual formation conditions all affect the methane adsorption capacity of the shale. Scholars at home and abroad also carry out some related researches and discussions on the influence of the factors on the methane adsorption capacity of the shale. However, formation water under actual geological conditions has different types and degrees of mineralization, and the water saturation of the formation also varies, and these factors also affect the methane adsorption capacity of the shale. Therefore, the actual gas content of the shale reservoir is difficult to calculate more accurately by using the existing experimental technical means, and some restrictions are generated on the resource amount calculation and exploration and development work of shale gas.
Disclosure of Invention
In view of this, the methane gas adsorption capacity under the actual formation condition is simulated more truly, so that the error of shale reservoir gas content calculation is reduced. The invention provides an experimental device for measuring shale methane adsorption capacity, which comprises: the device comprises a steam generation assembly, a high-pressure methane adsorption assembly, a pressurization assembly, a vacuumizing assembly, an air inlet assembly and a data acquisition assembly; the steam generating assembly comprises a sealed bin, a solution pool and a heating plate, the heating plate is positioned in the sealed bin, the solution pool is positioned on the heating plate, mineralized liquid is filled in the solution pool, the steam generating assembly is used for heating the mineralized liquid to generate steam, the high-pressure methane adsorption assembly comprises a sample bin, a magnetic suspension balance and a sample disc, the sample bin is a sealed bin body, the magnetic suspension balance is fixed in the sample bin, the sample disc is hung on a hook at the lower part of the magnetic suspension balance, sample particles to be detected are filled in the sample disc, the pressurizing assembly comprises a gas pressurizer, two steam guide pipes are connected onto the gas pressurizer, the two steam guide pipes are respectively connected onto the sealed bin and the sample bin, the gas pressurizer is used for inputting the steam generated in the sealed bin into the sample bin, the vacuumizing assembly comprises a vacuum pump, and the vacuum pump is respectively connected with the sealed bin and the sample bin through two vacuumizing pipes, the gas inlet assembly comprises a booster pump, a high-pressure helium steel cylinder and a high-pressure methane gas steel cylinder, the booster pump is connected with the sample bin through a booster pipe, the high-pressure helium steel cylinder and the high-pressure methane gas steel cylinder are connected with the booster pump through two gas conveying pipes respectively, the data acquisition assembly comprises a data acquisition unit, and the data acquisition unit is used for acquiring temperature and pressure data in the sealed bin and the sample bin in real time and reading display readings of the magnetic suspension balance.
Furthermore, the device also comprises a pipeline heating assembly, wherein the pipeline heating assembly comprises an electric heater and two electric heating wires, and the two heating wires are respectively wound on the two steam guide pipes.
Further, the sample tray comprises a cylindrical frame body and a metal wire mesh bottom, and the aperture of the metal wire mesh bottom is smaller than the diameter of the sample particles.
Furthermore, a magnetic stirring base is arranged at the bottom of the sealed bin, magnetic stirring blades are arranged in the solution tank, and the magnetic stirring base is used for controlling the magnetic stirring blades to rotate through magnetic force to stir mineralized liquid in the solution tank.
Further, the vacuum pump is connected with a storage tank, and the storage tank is used for storing the gas pumped by the vacuum pump.
The invention also provides an experimental method based on the experimental device for measuring the shale methane adsorption capacity, which comprises the following steps:
step S1: selecting a sample to be detected, and grinding the sample to sample particles; loading the sample particles into a sample tray and drying the sample tray;
step S2: preparing a mineralized solution, and starting a heating plate to heat the mineralized solution to evaporate the mineralized solution into steam;
step S3: opening the gas booster, and injecting water vapor in the sealed bin into the sample bin through the vapor guide pipe; closing the gas booster until the water saturation of the sample particles reaches the water saturation of the actual stratum of the research area;
step S4, starting the vacuum pump again, and quickly vacuumizing the sample cabin to remove the water vapor remained in the sample cabin;
step S5: starting a booster pump, inputting helium in a high-pressure helium cylinder into a sample bin, carrying out buoyancy test on sample particles, calculating the volume of the sample particles, and closing the booster pump after the buoyancy test is finished;
step S6: opening the vacuum pump again, quickly vacuumizing the sample bin, and opening the booster pump again to perform a methane adsorption test on the sample particles after removing helium remaining in the sample bin; closing the booster pump after the methane adsorption test is finished;
the methane adsorption test process is as follows: the booster pump inputs methane gas in the high-pressure methane gas steel cylinder into the sample bin, so that sample particles in the sample disc adsorb the high-pressure methane gas, and the data acquisition unit records a plurality of groups of pressure values of the methane gas in the sample bin and readings of the magnetic suspension balance corresponding to the pressure values;
step S7: and calculating the methane adsorption amount of the sample particles according to the volume of the sample particles calculated in the step S5, the multiple groups of pressure values of the methane gas collected in the step S6 and the readings of the magnetic suspension balance corresponding to the pressure values.
Further, in step S3, during the process that the gas booster inputs the water vapor in the sealed cabin into the sample cabin of the high-pressure methane adsorption component, the electric heater is turned on, and the electric heater heats the two vapor conduits through the two electric heating wires.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention has the advantages of simple principle, safe and efficient experiment, reasonable structural design of the device, high sensitivity, real-time data monitoring and collection, and accurate and reliable calculation result.
(2) The method can realize dynamic adjustment and optimization of a methane isothermal adsorption experimental scheme, including conditions such as temperature, pressure, water saturation, formation water type and mineralization degree, and the like, can develop research on shale methane adsorption capacity and adsorption mechanism under the condition of being closer to actual formation conditions, and can provide important technical support for shale gas resource evaluation and exploration and development under the complex structure background of China.
(3) The invention has wide application and application prospect, and can be used for the research on the aspects of competitive adsorption of multi-component gas, water vapor adsorption mechanism and the like besides the evaluation of the gas content of the shale. In addition, the method can also be applied to the evaluation of unconventional energy sources such as coal bed gas, tight sandstone gas and the like.
Drawings
FIG. 1 is a schematic structural diagram of an experimental apparatus for measuring shale methane adsorption capacity according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the construction of the sample tray 12 of FIG. 1;
shown in the figure: 1-sealed cabin, 2-solution pool, 3-magnetic stirring blade, 4-heating plate, 5-gas booster, 6-steam conduit, 7-electric heater, 8-electric heating wire, 9-vacuum pump, 10-sample cabin, 11-magnetic suspension balance, 12-sample disc, 13-cylindrical frame, 14-metal wire mesh bottom, 15-high pressure gas steel cylinder, 16-high pressure gas steel cylinder, 17-booster pump, 18-data collector.
Detailed Description
In order to make the purpose, technical features and advantages of the present invention more apparent, embodiments of the present invention are specifically described below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides an experimental apparatus for determining shale methane adsorption capacity, where the apparatus includes: the device comprises a steam generation assembly, a high-pressure methane adsorption assembly, a pipeline heating assembly, a supercharging device, a vacuumizing assembly, an air inlet assembly and a data acquisition assembly.
The steam generation subassembly includes sealed cabin 1, solution tank 2, magnetic stirring blade 3 and hot plate 4, and 1 lower part in sealed cabin is the magnetic stirring base, and hot plate 4 sets up in sealed cabin 1, and on hot plate 4 was fixed in the magnetic stirring base, solution tank 2 set up on hot plate 4, and magnetic stirring blade 3 sets up in solution tank 2, and solution tank 2 is used for splendid attire mineralized mineral solution, hot plate 4 is used for heating mineralized mineral solution in the solution tank 2 and makes its evaporation, and the magnetic stirring base is used for driving magnetic stirring blade 3 through magnetic force and rotates to mineralized mineral solution in the solution tank 2 stirs, makes mineralized mineral solution be heated evenly when the evaporation.
High pressure methane adsorption component 13 includes magnetic sample storehouse 10, suspension balance 11, sample dish 12, sample storehouse 10 is the sealed storehouse body, sample storehouse 10 embeds there is the module that adjusts the temperature of 1 inside temperatures in adjustable sample storehouse, magnetic suspension balance 11 is fixed in sample storehouse 10, sample dish 12 is through hanging on the couple of connecting in the 11 lower parts of magnetic suspension balance, sample dish 12 includes that tube-shape framework 13 and wire net end 14, the sample granule that awaits measuring is equipped with in the sample dish 12, the aperture of wire net end 14 is less than the sample granule diameter, magnetic suspension balance 11 is used for weighing the sample that awaits measuring.
The pressurizing assembly comprises a gas pressurizer 5 and two steam guide pipes 6, the gas pressurizer 5 is respectively connected with the sealed bin 1 and the sample bin 10 through the two steam guide pipes 6, water vapor generated in the sealed bin 1 enters the sample bin 4 through the two steam guide pipes 6, the gas pressurizer 5 is used for continuously inputting the water vapor generated in the sealed bin 4 into the sample bin 10, and therefore the water saturation and the mineralization degree of sample particles in the sample tray are adjusted (the water vapor generated in the sealed bin 4 contains mineralized substances, and the mineralization degree of the sample particles can be adjusted by adjusting the component proportion of the mineralized solution).
The pipeline heating assembly comprises an electric heater 7 and two electric heating wires 8 connected with the electric heater 7, wherein the electric heating wires 8 are wound on the steam guide pipe 6 respectively, and the electric heater 7 is used for enabling the electric heating wires 8 to generate heat so as to heat the steam guide pipe 6 and avoid the liquefaction and backflow of the water steam generated in the sealed cabin 1 in the steam guide pipe 6.
The vacuumizing assembly comprises a vacuumizing pump 9, a gas storage tank and two vacuumizing pipes, the vacuumizing pump 9 is connected with the gas storage tank, the vacuumizing pump 9 is connected with the sealed bin 1 and the sample bin 10 through the two vacuumizing pipes, the vacuum pump 9 is used for vacuumizing the sealed bin 1 and the sample bin 10, and the gas storage tank is used for storing gas pumped out by the vacuumizing pump 9.
The gas inlet assembly comprises a booster pump 17, a high-pressure helium gas steel cylinder 15 and a high-pressure methane gas steel cylinder 16, wherein high-pressure helium gas and methane gas are respectively filled in the high-pressure helium gas steel cylinder 15 and the high-pressure methane gas steel cylinder 16, the booster pump 17 is connected with the sample bin 10 through a booster pipe, the high-pressure helium gas steel cylinder 15 and the high-pressure methane gas steel cylinder 16 are respectively connected with the booster pump 17 through two gas pipes, the booster pump 17 is used for pressurizing helium gas in the helium gas steel cylinder 15 or methane gas in the high-pressure methane gas steel cylinder 16 and then inputting the pressurized helium gas or methane gas into the sample bin 10, and valves are respectively arranged on the two gas pipes and the booster pipe.
The data acquisition subassembly includes data collection station 18 and two sensing conductor, and two sensing conductor are first sensing conductor and second sensing conductor respectively, and first sensing conductor extends to in the sealed storehouse 1, and the second sensing conductor extends to in the sample storehouse 10, and first sensing conductor and second sensing conductor tip all are equipped with temperature sensor and pressure sensor, and data collection station 18 is through the temperature and the pressure value in the first sensing conductor real-time supervision sealed storehouse 1, through the temperature and the pressure value in the second sensing conductor real-time collection sample storehouse 10, and the second sensing conductor still links to each other with magnetic suspension balance 11 simultaneously, and data collection station 18 accessible second sensing conductor acquires the reading of magnetic suspension balance 11 in real time.
The method for determining the shale methane adsorption capacity by using the experimental device comprises the following steps:
step S1: selecting a sample to be detected, grinding the sample to sample particles with the particle size of 250-180 mu m, loading the sample particles into a sample disc 12 in a sample bin 10, starting a temperature control module arranged in the sample bin 10, adjusting the temperature in the sample bin to 110 ℃, starting a vacuum pump 9, drying the sample particles, and after the drying is finished, closing the vacuum pump 9 (after the indication displayed by a magnetic suspension balance 11 is not reduced any more, the sample particles are completely dried, wherein the indication m is 1 I.e. the total mass of the dried sample particles and the sample pan);
the sample to be detected is sample particles obtained by grinding a massive shale sample or a rock debris sample taken out from a sample well in a research area, and in order to reduce the weighing error of the magnetic suspension balance 11, the sample disc 12 is filled with the sample particles as much as possible.
Step S2: preparing a mineralized solution (namely, preparing the mineralized solution with the same components as the liquid in the target layer of the sampling well in the research area by mixing a plurality of chemical reagents in a quantitative ratio with distilled water) according to basic geological data of the sampling well in the research area; injecting the prepared mineralized solution into the solution pool 2, and sealing the sealed bin 1; starting the heating plate 4 to heat the mineralized solution in the solution pool 2 to evaporate the mineralized solution into steam, starting the magnetic stirring base to drive the magnetic stirring blades 3 to rotate, and stirring the mineralized solution to be heated uniformly;
step S3: opening the gas booster 5, and inputting the water vapor in the sealed cabin 1 into the sample cabin 10 through the vapor conduit 6; simultaneously, the electric heater 7 is turned on to heat the steam conduit 6; calculating the water saturation of the sample particles in real time, and closing a valve on the steam conduit 6 after the water saturation of the sample particles reaches the water saturation of the actual stratum of the research area;
wherein the water saturation of the sample particles is calculated by the formula (m) 2 -m 1 )/m 1 ，m 2 The weight display of the magnetic suspension balance 11 in the experimental process is shown;
step S4, starting the vacuum pump again, quickly vacuumizing for 5-10 min, and removing the water vapor remained in the sample bin 10;
step S5: carrying out buoyancy test on the sample particles, calculating the volume of the sample particles, namely opening a valve on a gas transmission pipe connected with a high-pressure helium gas steel cylinder 15, starting a booster pump 17, enabling helium gas to enter a sample bin 10, recording the helium gas pressure in the sample bin and the readings of a magnetic suspension balance 11, and calculating the volume of the sample particles according to the density of the helium gas under different pressures and the readings of the magnetic suspension balance 11 under different helium gas pressures; in the embodiment, the number of pressure points for buoyancy test is set to be 7, and the maximum pressure point is 60bar, namely, the readings of 11 magnetic suspension balances under 7 different helium pressures are recorded, and linear fitting is performed to obtain the particle volume of a sample;
step S6; and opening the vacuum pumping pump 9 again, quickly pumping vacuum for 5-10 min, after removing helium remaining in the sample bin 10, opening a valve on a gas transmission pipe connected with a high-pressure methane gas steel cylinder 16 and a booster pump 17, inputting high-pressure methane into the sample bin 10, performing a high-pressure methane adsorption test on sample particles, and recording readings of the magnetic suspension balance 11 under different methane pressures. In the high-pressure methane adsorption test process, the temperature in the sample bin 10 is kept unchanged, so that the high-pressure methane adsorption is carried out under the isothermal condition.
Step S7, after the high pressure methane adsorption test is finished, the valve on the gas transmission pipe connecting the booster pump 17 and the high pressure methane gas steel cylinder 16 is closed, the vacuum pump 9 is opened, the sealed cabin 1 and the sample cabin 10 are vacuumized, after the vacuum state is reached, the vacuum pump 9 is closed, and finally, the data collected in the data collector 18 are processed to obtain the methane adsorption quantity of the shale sample under the actual stratum condition.
In the above method steps, for samples which are taken from the same formation water type and the same mineralization and only have differences in water saturation, the water saturation of the sample needs to be adjusted through step S3 in the embodiment of the present invention, and then the subsequent steps are sequentially completed to obtain the methane adsorption amount of the sample. For samples taken from different formation water types, different mineralization degrees and different water saturation conditions, solutions with different formation water types and different mineralization degrees are prepared through the step S2 in the embodiment of the invention, the water saturation of the samples is adjusted through the step S3, and then the subsequent steps are sequentially completed to obtain the methane adsorption capacity of the samples. In conclusion, the shale methane adsorption capacity is measured based on simulation under actual stratum conditions, so that more accurate data can be obtained by calculating the total gas content of shale and evaluating shale gas resources, the problems that an existing evaluation system is not strict, an experimental technology is incomplete, the structural design of a device is unreasonable and the like are solved, and effective technology and method support is provided for shale gas exploration and development work under the complex geological background of China.
The above description is only a preferred embodiment of the present invention and should not be taken as limiting, and it will be understood by those skilled in the art that various changes and modifications may be made in the embodiment of the present invention without departing from the spirit and scope of the invention.
Claims (4)
1. An experimental method for measuring shale methane adsorption capacity is characterized in that: the experimental method uses an experimental device for measuring the methane adsorption capacity of the shale; the device includes: the device comprises a steam generation assembly, a high-pressure methane adsorption assembly, a pressurization assembly, a vacuumizing assembly, an air inlet assembly and a data acquisition assembly; the steam generating assembly comprises a sealed bin, a solution pool and a heating plate, the heating plate is positioned in the sealed bin, the solution pool is positioned on the heating plate, mineralized liquid is filled in the solution pool, and the steam generating assembly is used for heating the mineralized liquid to generate steam; the high-pressure methane adsorption assembly comprises a sample bin, a magnetic suspension balance and a sample disc, wherein the sample bin is a closed bin body, the magnetic suspension balance is fixed in the sample bin, the sample disc is hung on a hook at the lower part of the magnetic suspension balance, and sample particles to be detected are filled in the sample disc; the pressurizing assembly comprises a gas pressurizer, two steam guide pipes are connected to the gas pressurizer, the two steam guide pipes are respectively connected to the sealed bin and the sample bin, and the gas pressurizer is used for inputting steam generated in the sealed bin into the sample bin; the vacuum pumping assembly comprises a vacuum pumping pump, and the vacuum pumping pump is respectively connected with the sealing bin and the sample bin through two vacuum pumping pipes; the gas inlet assembly comprises a booster pump, a high-pressure helium gas steel cylinder and a high-pressure methane gas steel cylinder, the booster pump is connected with the sample bin through a booster pipe, the high-pressure helium gas steel cylinder and the high-pressure methane gas steel cylinder are respectively connected with the booster pump through two gas conveying pipes, the data acquisition assembly comprises a data acquisition unit, and the data acquisition unit is used for acquiring temperature and pressure data in the sealed bin and the sample bin in real time and reading the display reading number of the magnetic suspension balance;
the sample tray comprises a cylindrical frame body and a metal wire mesh bottom, and the aperture of the metal wire mesh bottom is smaller than the diameter of the sample particles;
the bottom of the sealed bin is provided with a magnetic stirring base, a magnetic stirring blade is arranged in the solution pool, and the magnetic stirring base is used for controlling the magnetic stirring blade to rotate through magnetic force to stir mineralized liquid in the solution pool;
the experimental method comprises the following steps: step S1: selecting a sample to be detected, and grinding the sample to sample particles; loading the sample particles into a sample tray and drying the sample tray;
step S2: preparing a mineralized solution, and starting a heating plate to heat the mineralized solution to evaporate the mineralized solution into steam;
step S3: opening the gas booster, and injecting water vapor in the sealed cabin into the sample cabin through the steam guide pipe; closing the gas booster until the water saturation of the sample particles reaches the water saturation of the actual stratum of the research area;
step S4, starting the vacuum pump again, and quickly vacuumizing the sample cabin to remove the water vapor remained in the sample cabin;
step S5: starting a booster pump, inputting helium in a high-pressure helium cylinder into a sample bin, carrying out buoyancy test on sample particles, calculating the volume of the sample particles, and closing the booster pump after the buoyancy test is finished;
step S6: opening the vacuum pump again, quickly vacuumizing the sample bin, and opening the booster pump again to perform a methane adsorption test on the sample particles after removing helium remaining in the sample bin; closing the booster pump after the methane adsorption test is finished;
the methane adsorption test process is as follows: the booster pump inputs methane gas in the high-pressure methane gas steel cylinder into the sample bin, so that sample particles in the sample disc adsorb the high-pressure methane gas, and the data acquisition unit records a plurality of groups of pressure values of the methane gas in the sample bin and readings of the magnetic suspension balance corresponding to the pressure values;
step S7: and calculating the methane adsorption amount of the sample particles according to the volume of the sample particles calculated in the step S5, the multiple groups of pressure values of the methane gas collected in the step S6 and the readings of the magnetic suspension balance corresponding to the pressure values.
2. The experimental method for measuring shale methane adsorption capacity according to claim 1, wherein: the steam pipe is characterized by further comprising a pipeline heating assembly, wherein the pipeline heating assembly comprises an electric heater and two electric heating wires, and the two electric heating wires are wound on the two steam pipes respectively.
3. The experimental method for measuring shale methane adsorption capacity according to claim 1, wherein: the vacuum pumping pump is connected with a storage tank, and the storage tank is used for storing the gas pumped by the vacuum pumping pump.
4. The experimental method for measuring shale methane adsorption capacity of claim 1, wherein in step S3, during the process that the gas booster inputs the water vapor in the sealed cabin to the sample cabin of the high-pressure methane adsorption component, the electric heater is turned on, and the electric heater heats the two vapor conduits through the two electric heating wires.
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