CN108663186A - The device and method of gas transfer between test sheets cleft and matrix - Google Patents
The device and method of gas transfer between test sheets cleft and matrix Download PDFInfo
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- CN108663186A CN108663186A CN201710192730.XA CN201710192730A CN108663186A CN 108663186 A CN108663186 A CN 108663186A CN 201710192730 A CN201710192730 A CN 201710192730A CN 108663186 A CN108663186 A CN 108663186A
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- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 238000012546 transfer Methods 0.000 title claims abstract description 40
- 239000011159 matrix material Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 239000000700 radioactive tracer Substances 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims 2
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000009792 diffusion process Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 7
- 229910018503 SF6 Inorganic materials 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 6
- 229960000909 sulfur hexafluoride Drugs 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000003795 desorption Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003722 extracellular fluid Anatomy 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000002336 sorption--desorption measurement Methods 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a kind of device and method of gas transfer between test sheets cleft and matrix, described device includes：One end of more micro-pipes, micro-pipe is connected with high temperature and high pressure gas piston container, and the other end is connected with pressure pipe；The other end of high temperature and high pressure gas piston container is connected to high-pressure plunger pump, and high-pressure plunger pump is connected with air inlet；The other end of pressure pipe is connected to chromatograph.The advantage of the invention is that：It can realize the rule that fluid flows in different micro-nano-scales, the exploitation of shale gas and the raising of shale gas recovery ratio are can aid in by the flowing law tested out.
Description
Technical field
The present invention relates to oil-gas field development experimental fields, more particularly, to gas between a kind of test sheets cleft and matrix
The device and method of body mass transfer.
Background technology
Shale gas is typical Unconventional gas, originates from pole low porosity permeability, preserves series of rocks based on rich organic shale
In.The formation of shale gas and enrichment be self-generation, self-reservoir, based on free gas and adsorbed gas, saturation in situ is enriched in based on shale
The micro/nano level hole-crack for preserving series of rocks and mineral particle surface.
Shale gas is using fracturing developing as main means at present, due in slit near initial stage of development artificial fracturing crack
Shale gas causes shale gas primiparity high, but later stage gas reservoir deep shale gas (free gas and stripping gas) by faster mined
It is flowed slowly into crack, production decline is rapid, long-time low yield stable yields.Shale in gas reservoir deep matrix (micro/nano level slit)
Gas determines the development effectiveness of later stage shale gas with the interstitial fluid mass-transfer of artificial fracturing, while evaluating matrix and artificial fracturing
Interstitial fluid mass-transfer rule also takes well stimulation to be of great significance shale gas.
The mass transfer mode of shale gas is without slippage seepage flow, there is slippage seepage flow, transition flow and molecule diffusion, gas
Mass transfer mode is mainly influenced by pore scale.Carry out shale gas physical analogy at present and mostly use core sample development mass transfer experiment,
Core sample includes monolith substrate or crack sample and polylith matrix and crack sample " series/parallel " two ways.Monolithic sample
Mode such as Yang Bin (Southwest Petrol University's Master's thesis, 2015) expands before and after carrying out low speeds flow experiment and pressure break using matrix rock core
Dissipate experiment, Kang Yili (CN201510767852.8, a kind of shale gas reservoir gas diffusivity experimental test procedures) passes through monitoring
Pressure of the methane gas of certain initial pressure into the shale plunger rock sample under the conditions of effective stress declines in constant temperature closed system
Subtrahend strives (CN201420667963.2, a kind of page according to diffusion mass transfer ability of the quantitative assessment gas (methane) in shale, Zhu
Rock gas device for testing diffusion coefficient) and Li Wuguang (CN201420638719.3, a kind of shale gas diffusivity tester) pass through
Common differential pressure indicator and fine differential pressure indicator be used in parallel and the methods of the improvement of data acquisition improves the survey of shale core diffusion coefficient
The precision of examination, Zhao Chunpeng (the test system and method for CN201410075251.6, diffusion coefficient and isothermal adsorption/desorption curve)
Establish the diffusion coefficient of shale gas and the test device and method of isothermal adsorption/desorption curve, Yu Wang (SPE-180229-
MS, 2016, An Experimental Investigation of Desorption Kinetics and Mass
Transfer in Shale) using shale core carry out desorption and Diffusion Law research.Polylith sample slit " series/parallel "
Mode such as Zhong Ying (science and technology and engineering, 2015,15 (10)：64-67), the three kinds of configurations of matrix rock sample and rock sample containing crack are designed
To shale gas mass-transfer efficiency after the effect of relationship research fracturing fluid.
By analysis, the studies above uses shale core can be with the flowing environment of real simulation shale gas reservoir, but rock core
It is the porous media environment of complexity, it is obtaining the result is that comprehensive effect, is unfavorable for carrying out single factor evaluation, cannot achieve to difference
Micro-nano-scale is judged respectively.Therefore, it is necessary to establish a kind of test sheets judged respectively different micro-nano-scales
The device and method of gas transfer between cleft and matrix.
The information for being disclosed in background of invention part is merely intended to deepen the reason of the general background technology to the present invention
Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form
Technology.
Invention content
The present invention proposes a kind of device and method of gas transfer between test sheets cleft and matrix, can establish one
The device of gas transfer between kind test sheets cleft and matrix utilizes the device to realize fluid flowing rule in different micro-nano-scales
The research of rule obtains influence of the different micro-nano-scale slits to shale gas exploitation and well stimulation.
According to an aspect of the invention, it is proposed that between a kind of test sheets cleft and matrix gas transfer device, including：
One end of more micro-pipes, the micro-pipe is connected with high temperature and high pressure gas piston container, and the other end is connected with pressure pipe；
The other end of the high temperature and high pressure gas piston container is connected to high-pressure plunger pump, the high-pressure plunger pump and air inlet
Mouth is connected；
The other end of the pressure pipe is connected to chromatograph.
Preferably, described device further includes；
First control valve, first control valve are set to the high temperature and high pressure gas piston container and described more
Between micro-pipe；
Second control valve, third control valve door, second control valve, third control valve door are set to the pressure resistance
The both ends of pipe.
Preferably, described device further includes the control valve being set between the pressure pipe and the chromatograph.
Preferably, the chromatograph is identical as the quantity of the micro-pipe.
Preferably, the more microtube lengths are identical, and internal diameter is different.
Preferably, the micro-pipe is glass-micropipe.
Preferably, the pressure pipe is metal pressure pipe.
According to another aspect of the invention, it is proposed that between a kind of test sheets cleft and matrix gas transfer method, packet
Include following steps：
The physical model in shale matrix and crack is established by more micro-pipes and pressure pipe；
Shale gas is mixed with gas tracer in filling to the high temperature and high pressure gas piston container vacuumized；
The more micro-pipes are connect with the high temperature and high pressure gas piston container respectively, the pressure pipe connects with chromatograph
It connects；
Constant pressure is injected separately into the shale gas and gas tracer mixed gas into the more micro-pipes, passes through the color
Gas stream artificial situation in the different more micro-pipes of spectrometer real-time testing obtains fluid of the shale gas in different pore throat sizes and passes
Matter rule.
Preferably, the high temperature and high pressure gas piston container is constant to experiment pressure by gas pressure using high-pressure plunger pump
Power, the test pressure is less than the micro-pipe and the highest of the pressure pipe carries pressure.
Preferably, in high temperature experimental situation, the physical model and the high temperature and high pressure gas piston container are placed
In baking oven, it is heated to steady temperature, the steady temperature is less than the micro-pipe and the highest of pressure pipe carrying temperature
Degree.
The advantages of the device of the invention and method, is：It can realize the rule that fluid flows in different micro-nano-scales,
It can aid in the exploitation of shale gas and the raising of shale gas recovery ratio by the flowing law tested out.
Apparatus and method of the present invention has other characteristics and advantages, these characteristics and advantages attached from what is be incorporated herein
It will be apparent in figure and subsequent specific embodiment, or will be in the attached drawing and subsequent specific implementation being incorporated herein
It is stated in detail in example, these the drawings and specific embodiments are used together to explain the specific principle of the present invention.
Description of the drawings
Exemplary embodiment of the present is described in more detail in conjunction with the accompanying drawings, of the invention is above-mentioned and other
Purpose, feature and advantage will be apparent, wherein in exemplary embodiments of the present invention, identical reference label is usual
Represent same parts.
Fig. 1 shows the device of gas transfer between test sheets cleft according to an embodiment of the invention and matrix
Schematic diagram.
Fig. 2 shows according to another embodiment of the invention test sheets cleft and matrix between gas transfer device
Schematic diagram.
Fig. 3 shows the flow chart of the method for gas transfer between a kind of test sheets cleft according to the present invention and matrix.
Reference sign：
1, micro-pipe；2, pressure pipe；3, the first high temperature and high pressure gas piston container；
4, the first high-pressure plunger pump；5, chromatograph；6, the first control valve；
7, the second control valve；8, third control valve door；9, multiple control valves；
10, the second high temperature and high pressure gas piston container；11, the second high-pressure plunger pump；
12, the 4th control valve.
Specific implementation mode
The present invention is more fully described below with reference to accompanying drawings.Although showing the preferred embodiment of the present invention in attached drawing,
However, it is to be appreciated that may be realized in various forms the present invention without should be limited by embodiments set forth here.On the contrary, providing
These embodiments are of the invention more thorough and complete in order to make, and can will fully convey the scope of the invention to ability
The technical staff in domain.
The present invention proposes a kind of device of gas transfer between test sheets cleft and matrix, including：More micro-pipes, micro-pipe
One end is connected with high temperature and high pressure gas piston container, and the other end is connected with pressure pipe；High temperature and high pressure gas piston container it is another
End is connected to high-pressure plunger pump, and high-pressure plunger pump is connected with air inlet；The other end of pressure pipe is connected to chromatograph.
Wherein, more microtube lengths are identical, and internal diameter is different, and the micro-pipe of different inner diameters simulates the hole of different micro-nano-scales
Seam, since the size of micro-pipe is tested respectively it is known that different micro-nano-scale slits therefore may be implemented.
Test is simulated using the pressure pipe of larger interior diameter, and internal diameter stitches length according to the slit width of fracturing fracture and selects, more
Micro-pipe and pressure pipe form the physical model of matrix and crack.
When it should be understood that when influence of the pore throat size to flowing, the micro-pipe combination of equal length different inner diameters may be used；
When it should be understood that when influence of the distance to flowing, the identical interior micro-pipe combination through different length may be used；Simulate different exploitations
Mode can be realized by changing flow direction.
Preferably, micro-pipe and pressure pipe pressure-bearing are not less than 10MPa, and heatproof is not less than 100 DEG C.
Preferably, chromatograph is identical as the quantity of micro-pipe.
Preferably, device further includes；
First control valve, the first control valve are set between high temperature and high pressure gas piston container and more micro-pipes；
Second control valve, third control valve door, the second control valve, third control valve door are set to the two of pressure pipe
End.
Preferably, device further includes the control valve being set between pressure pipe and chromatograph, and chromatograph with
The quantity of control valve is identical.
Wherein, valve has the function of cut-off, adjusting, water conservancy diversion, prevents adverse current, voltage stabilizing, shunting or overflow pressure relief.
Preferably, micro-pipe is glass-micropipe.Micro-pipe is not limited only to glass-micropipe, and can also be other can realize
The micro-pipe of identical inside/outside diameter size and bearing capacity.
Preferably, pressure pipe is metal pressure pipe.Pressure pipe is not only metal pressure pipe, can also be other energy
Enough realize the pressure pipe of identical inside/outside diameter size and bearing capacity.
The device of the invention can simulate fluid in different micro-nano-scales and flow, and disclose its flowing law.
The method that another aspect of the present invention proposes gas transfer between a kind of test sheets cleft and matrix, including following step
Suddenly：The physical model in shale matrix and crack is established by more micro-pipes and pressure pipe；Shale gas is mixed with gas tracer
In filling to the high temperature and high pressure gas piston container vacuumized；More micro-pipes are connected with high temperature and high pressure gas piston container respectively
It connects, pressure pipe is connect with chromatograph；Constant pressure is injected separately into shale gas and gas tracer mixed gas into more micro-pipes, passes through
Gas stream artificial situation in the different more micro-pipes of chromatograph real-time testing, obtains fluid mass-transfer of the shale gas in different pore throat sizes
Rule.
Wherein, for the identification of gas flowing law, mainly judged by gas tracer and chromatograph test, shale
Certain density gas tracer is added in gas, gas real-time minimum is tested by chromatograph, judges the flowing of shale gas.
Preferably, it is 1-10 × 10 that gas tracer, which selects sulfur hexafluoride, preferred concentration,-3mg/L。
Preferably, high temperature and high pressure gas piston container is constant to experiment pressure by gas pressure using high-pressure plunger pump
Power, the test pressure are less than the highest in micro-pipe and pressure pipe and carry pressure.
Preferably, in high temperature experimental situation, physical model and high temperature and high pressure gas piston container are positioned over
In baking oven, it is heated to steady temperature, wherein steady temperature is to carry temperature less than micro-pipe and the highest of pressure pipe.
The flowing law that shale gas can be tested out by above-mentioned apparatus and experimental method, contribute to shale gas exploitation and
Improve the recovery ratio of shale gas.
Embodiment 1
Fig. 1 shows the device of gas transfer between test sheets cleft according to an embodiment of the invention and matrix
Schematic diagram.
Select length identical in embodiment 1,5 different micro-pipes 1 of internal diameter, micro-pipe 1 is glass-micropipe, with 2 groups of pressure pipe
Build vertical physical model jointly, wherein pressure pipe 2 is stainless steel pressure pipe.
The internal diameter of 5 micro-pipes 1 be respectively 500nm, 1 μm, 2 μm, 5 μm, 10 μm, length is 5cm, the internal diameter of pressure pipe 2
For 3mm, length 20cm.Gas tracer selects sulfur hexafluoride, by methane and a concentration of 5 × 10-3The sulfur hexafluoride of mg/L is mixed
Filling is closed in the first high temperature and high pressure gas piston container 3 vacuumized, the first high temperature and high pressure gas piston container 3 is using the
One high-pressure plunger pump 4 is constant to experimental pressure 8MPa by gas pressure, and 5 micro-pipes 1 and the first high temperature and high pressure gas piston are held
Device 3 connects, and pressure pipe 2 is connected with chromatograph 5, the multiple control valves 6 of each junction setting, the quantity of multiple control valves 6 and
1 quantity of micro-pipe is identical, and the first control valve 6, pressure pipe is arranged between the first high temperature and high pressure gas piston container 3 and 5 micro-pipes 1
The second control valve 7 and third control valve door 8 is respectively set in 2 both sides, and above-mentioned each component forms experimental provision.
Methane and sulfur hexafluoride gas mixture are injected into 5 micro-pipes 1 using 8MPa pressure, surveyed in real time using chromatograph 5
The case where different micro-pipes 1 flow into gas in pressure pipe 2 is tried, and then judges flowing law of the gas in different pore throat sizes.
Embodiment 2
Fig. 2 shows according to another embodiment of the invention test sheets cleft and matrix between gas transfer device
Schematic diagram.
The present embodiment mainly studies injection CO2Improve influence of the pore throat size to flowing in shale gas throughput process.Selection
5 micro-pipes 1 of equal length different inner diameters, micro-pipe 1 are glass-micropipe, are combined with pressure pipe 2 and establish physical model, wherein is resistance to
Pressure pipe 2 is stainless steel pressure pipe.
5 glass-micropipe internal diameters be respectively 500nm, 1 μm, 2 μm, 5 μm, 10 μm, length is 5cm, stainless steel pressure pipe
Internal diameter is 3mm, length 20cm.Gas tracer selects sulfur hexafluoride, by methane and a concentration of 5 × 10-3Mg/L's is lithium
In sulphur mixing filling to the first high temperature and high pressure gas piston container 3 vacuumized, will, the CO for being 99.995% by purity2It fills
For note in the second high temperature and high pressure gas piston container 10 vacuumized, two high temperature and high pressure gas piston containers are respectively adopted the
One high-pressure plunger pump 4 and the second high-pressure plunger pump 11 are constant to 8MPa, 9MPa, the first control valve 6 and second by gas pressure
Control valve 7 is set to 2 both sides of pressure pipe, and third control valve door 8 is set to the first high temperature and high pressure gas piston container 3 and pressure resistance
Between pipe 2, the 4th control valve 12 is set between the second high temperature and high pressure gas piston container 10 and pressure pipe 2, the first high temperature
High pressure gas piston container 3 is controlled by the first high-pressure plunger pump 4, and the second high temperature and high pressure gas piston container 10 is high by second
Hydraulic plunger pump 11 controls.Remaining multiple control valve 9 is set between micro-pipe 1 and chromatograph 5, wherein multiple control valves 9,
Micro-pipe 1 is identical with 5 quantity of chromatograph, and multiple control valves 9 are closed, and are vacuumized, then to 4 air inlet of the first high-pressure plunger pump
Methane and sulfur hexafluoride mixture are injected, pressure stability injects CO to 8MPa into pressure pipe 2 in model2, initial pressure is
9MPa, using flowing out CO in 5 real-time testing difference micro-pipe 1 of chromatograph2The case where, and then judge CO2In different pore throat sizes
Flowing law.
Fig. 3 shows the flow chart of the method for gas transfer between a kind of test sheets cleft according to the present invention and matrix.
As shown in figure 3, between a kind of test sheets cleft and matrix gas transfer method, include the following steps：
Step 1, the physical model in shale matrix and crack is established by more micro-pipes and pressure pipe；
Step 2, shale gas is mixed with gas tracer in filling to the high temperature and high pressure gas piston container vacuumized；
Step 3, more micro-pipes are connect with high temperature and high pressure gas piston container respectively, pressure pipe is connect with chromatograph；
Step 4, constant pressure is injected separately into shale gas and gas tracer mixed gas into more micro-pipes, passes through chromatograph reality
When test gas stream artificial situation in different more micro-pipes, obtain fluid mass-transfer rule of the shale gas in different pore throat sizes.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes will be apparent from for the those of ordinary skill in art field.The selection of term used herein, purport
In the principle, practical application or improvement to the technology in market for best explaining each embodiment, or make the art
Other those of ordinary skill can understand each embodiment disclosed herein.
Claims (10)
1. the device of gas transfer between a kind of test sheets cleft and matrix, including：
One end of more micro-pipes, the micro-pipe is connected with high temperature and high pressure gas piston container, and the other end is connected with pressure pipe；
The other end of the high temperature and high pressure gas piston container is connected to high-pressure plunger pump, the high-pressure plunger pump and air inlet phase
Even；
The other end of the pressure pipe is connected to chromatograph.
2. the device of gas transfer between test sheets cleft according to claim 1 and matrix, wherein described device is also wrapped
It includes；
First control valve, first control valve are set to the high temperature and high pressure gas piston container and the more micro-pipes
Between；
Second control valve, third control valve door, second control valve, third control valve door are set to the pressure pipe
Both ends.
3. the device of gas transfer between test sheets cleft according to claim 2 and matrix, wherein described device is also wrapped
It includes, the control valve being set between the pressure pipe and the chromatograph.
4. the device of gas transfer between test sheets cleft according to claim 1 and matrix, wherein the chromatograph with
The quantity of the micro-pipe is identical.
5. the device of gas transfer between test sheets cleft according to claim 1 and matrix, wherein the more micro-pipes
Length is identical, and internal diameter is different.
6. the device of gas transfer between test sheets cleft according to claim 1 and matrix, wherein the micro-pipe is glass
Glass micro-pipe.
7. the device of gas transfer between test sheets cleft according to claim 1 and matrix, wherein the pressure pipe is
Metal pressure pipe.
8. a kind of method of gas transfer between test sheets cleft and matrix, utilizes the test sheets lithofraction described in claim 1-7
The device of gas transfer, includes the following steps between seam and matrix：
The physical model in shale matrix and crack is established by more micro-pipes and pressure pipe；
Shale gas is mixed with gas tracer in filling to the high temperature and high pressure gas piston container vacuumized；
The more micro-pipes are connect with the high temperature and high pressure gas piston container respectively, the pressure pipe is connect with chromatograph；
Constant pressure is injected separately into the shale gas and gas tracer mixed gas into the more micro-pipes, passes through the chromatograph
Gas stream artificial situation in the different more micro-pipes of real-time testing obtains fluid mass-transfer rule of the shale gas in different pore throat sizes
Rule.
9. the method for gas transfer between test sheets cleft according to claim 8 and matrix, wherein the high temperature and pressure
Gas piston container is constant to experimental pressure by gas pressure using high-pressure plunger pump, the experimental pressure be less than the micro-pipe and
The highest of the pressure pipe carries pressure.
10. the method for gas transfer between test sheets cleft according to claim 8 and matrix, wherein tested in high temperature
When environment, the physical model and the high temperature and high pressure gas piston container are positioned in baking oven, constant temperature is heated to
Degree, the steady temperature carry temperature less than the micro-pipe and the highest of the pressure pipe.
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| CN201710192730.XA CN108663186B (en) | 2017-03-28 | 2017-03-28 | Device and method for testing gas mass transfer between shale fracture and matrix |
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| CN201710192730.XA CN108663186B (en) | 2017-03-28 | 2017-03-28 | Device and method for testing gas mass transfer between shale fracture and matrix |
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