CN104132881B - Reservoir permeating medium heterogeneous fluid pressure break-gas-liquid separated experimental system of seepage flow - Google Patents
Reservoir permeating medium heterogeneous fluid pressure break-gas-liquid separated experimental system of seepage flow Download PDFInfo
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Abstract
The invention discloses a kind of reservoir permeating medium heterogeneous fluid gas-liquid separated experimental system of pressure break seepage flow, including frame；Hoisting mechanism it is provided with in frame；Hoisting mechanism is connected with pressure chamber；Frame be fixedly arranged in the middle of oil cylinder；Pressure chamber includes the bottom being placed on mobile dolly；On bottom, bolt connects the seat of honour；The upper end at the seat of honour is fixed with guide cover；The center of guide cover is combined with depression bar；The first water hole and the first pore it is arranged with vertically in parallel in depression bar；The lower end threaded engagement in the first water hole has seaming chuck；The center of bottom is fixed with wedge；Column it is fixed with on wedge；The upper end of column is fixed with push-down head；Through portalling it is provided with on wedge, column and push-down head；Apopore it is provided with on bottom；Frame is fixed on heating fuel tank；It is provided with oil temperature sensor in heating fuel tank, adds heat pipe and circulating pump；Portal and be connected with aqueous vapor separating and measuring system.The experiment method that the present invention can be carried out is more, and experimental precision is higher.
Description
Technical field
The present invention relates to a kind of experimental system, particularly relate to a kind of for studying unconventional gas pressure break-extraction
The experimental system of synergy mechanism.
Background technology.
Continuous progressive along with economic fast development and human society, current large-scale production also utilizes in a large number
Conventional energy resource supply can not meet the market demand day by day, under the Energy situation of this sternness, unconventional natural
Gas shows huge resource potential, and China's unconventional gas resource is the abundantest, development prospect
Wide, Unconventional forage will necessarily become the important sources of future source of energy supply.Unconventional forage reservoir
Permeability is the physical parameter of fluid neuron network complexity in reflection reservoir, its with reservoir fracture development characteristics,
Geological structure, crustal stress states, fluid pressure, ground temperature, the contraction of permeating medium substrate, reservoir bury
Deeply, permeating medium structure and earth electric field etc. closely related, and the storage that the size of reservoir permeability is to natural gas
Distribution in mining, fluid pressure plays an important role.Therefore, to Unconventional forage reservoir and gas
Reservoir carries out the experimentation of mechanics deformation characteristic and seepage characteristic under mining conditions and is necessary.
In general, Unconventional forage includes compact sandstone gas, coal bed gas, shale gas and natural gas hydration
Thing etc..China's Unconventional forage reserves are the abundantest, and potentiality to be exploited is huge, but complex geologic conditions,
Burying deep, cost of winning is high.During exploitation Unconventional forage, fracturing is one and improves effect
Rate, the key technology of reduction cost.At present, Chinese scholars has begun to the destruction of the fracturing to reservoir
Mechanism, fracture propagation geometric shape and fracture extension rule have carried out some researchs.But, owing to lacking relatively
For the scientific research of system, relevant fracturing mechanism is deficient, fails to affect the relevant main of fracturing effect
Parameter quantifies, so the application that this technology is in Unconventional forage reservoir anatonosis field is subject to development
A certain degree of restriction.
Existing experimental provision is primarily present following deficiency: 1) the permeability influence factor considered is relatively
Single, it is impossible to account for the multiple physical field coupling experiment in stress field, seepage field, temperature field etc.；2) as needed
Measure permeability, need removal of core to carry out on other experimental facilities, and now rock core produces because of pressure break
Crack can re-close, it is impossible to quantitatively accurately record the change of permeability before and after rock core pressure break in situ；3) institute
The Seepage Experiment carried out is mostly single aqueous phase or gas phase Seepage Experiment, it is impossible to measure water gas respectively flows automatically
Amount；4) vacuum within test specimen can not be recorded, the most accurate for the experiment that there is gas absorption；
5) installation process is carried the most by hand, it has not been convenient to and process is not sufficiently stable, and has a certain impact test specimen.
Therefore, set up the unconventional gas pressure break-Seepage Experiment test system of a kind of science, explore fracturing
The fracture damage of the lower reservoir permeating medium of effect and anatonosis mechanism, application and popularization to fracturing have important
Meaning.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is to provide a kind of energy essence
Really measure test specimen pressure break-seepage flow experiment system of permeability variation before and after pressure break under the conditions of multi-scenarios method.
For achieving the above object, the invention provides a kind of reservoir permeating medium heterogeneous fluid pressure break-seepage flow gas-liquid
Separate type experimental system, including frame；The bottom of described frame is provided with closed slide；Described closed slide
On be provided with mobile dolly；It is provided with hoisting mechanism in described frame；Described hoisting mechanism is connected with pressure chamber；
Described frame be fixedly arranged in the middle of oil cylinder；It is fixed with displacement transducer on the piston of described oil cylinder；Described piston
External part be fixed with pressure transducer；
Described pressure chamber includes the bottom being placed on described mobile dolly；On on described bottom, bolt connection has
Seat；The upper end at the described seat of honour is fixed with guide cover；
The center of described guide cover is combined with depression bar；Be arranged with in parallel vertically in described depression bar the first water hole and
First pore；Described first water hole is positioned at the center of described depression bar；
The lower end threaded engagement in described first water hole has seaming chuck；Being provided centrally with described of described seaming chuck
Second water hole of the first water hole connection；It is provided with what several connected with described first pore on described seaming chuck
Second pore；
The lower end threaded engagement in described second water hole has fracturing head；
The center of described bottom is fixed with wedge；It is fixed with column on described wedge；The upper end of described column is solid
Surely there is push-down head；Described push-down head is provided with some 3rd pores towards test specimen side；
Through portalling it is provided with on described wedge, column and push-down head；Described 3rd pore portals with described
Connection；It is provided with apopore on described bottom；The described end portalled connects water out adapter of giving vent to anger；
Described frame is fixed on heating fuel tank；It is provided with oil temperature sensor in described heating fuel tank, adds heat pipe
And circulating pump.
It is also preferred that the left described hoisting mechanism includes lifting speed reduction motor；The power of described lifting speed reduction motor passes through
Transmission band is transferred to the symmetrically arranged belt wheel of described frame top；Described belt wheel is fixed on drive lead screw；Institute
State fixing to the extension of the lower section of described frame the top with the described seat of honour of drive lead screw；
Location bar it is fixed with on described bottom；The location answered with described location pole pair it is provided with on described guide cover
Hole；
Described portalling is connected with aqueous vapor separating and measuring system；Described aqueous vapor separating and measuring system include with described go out
The three-way valve that gas water out adapter connects；Described three-way valve has been simultaneously connected with the first stop valve and the second stop valve；
Described second stop valve is connected with gas-liquid separator；Described gas-liquid separator is connected with cross valve simultaneously；Described
Cross valve has been simultaneously connected with the 3rd stop valve；Described 3rd stop valve is connected with effusion meter；Described effusion meter is same
Time be connected with data collecting instrument.
For ease of pressure chamber evacuation, simplify pipeline structure, described cross valve be also associated with the 4th stop valve and
5th stop valve；Described 4th stop valve is connected with vacuum pump；Described 5th stop valve is connected with vacuometer；
Described vacuometer is connected with described data collecting instrument.
For further accurate experiment, described in give vent to anger water out adapter and have with being connected on the connecting line of described three-way valve
Pressure transducer；Described pressure transducer is connected with described data collecting instrument.
The invention has the beneficial effects as follows:
(1) different reservoir permeating medium can be accounted for many physics in stress field, seepage field, temperature field etc.
Field coupling experiment, real including triaxial compressions Seepage Experiment, hydraulic fracturing experiments and heterogeneous fluid fluid structurecoupling
Test.
(2) owing to devising permeability test system before and after fracturing, therefore reservoir permeating medium can be existed
Carry out the permeability before and after fracturing under external stress effect to carry out the most accurately measuring.
(3) owing to devising aqueous vapor separating and measuring system, water, the most accurately the measuring into of throughput are therefore made
For possible.
(4) owing to devising vacuum system, what this system can be more convenient carries out evacuation process to test specimen,
And the vacuum within test specimen is carried out visualization processing, has made experiment condition more accurate.
(5) fluid pressure monitoring sensor can have been separately designed in test specimen front and back end, so that experiment condition
More accurate.
(6) can be by arranging the guide cover of different inner diameters, thus the size changing depression bar is different to adapt to
Sample dimensions.
(7) by design hoisting mechanism and mobile dolly, so that installation process is essentially without manual handling,
More intelligent.
In a word, the experiment method that the present invention can be carried out is more, and experimental precision is higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the structural representation of pressure chamber in Fig. 1.
Fig. 3 is the partial enlargement structural representation in Fig. 2 at I.
Fig. 4 is the partial enlargement structural representation in Fig. 2 at II.
Fig. 5 is embodiment of the invention middle outlet pipeline structure schematic diagram.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings:
As shown in Figures 1 to 5, a kind of reservoir permeating medium heterogeneous fluid pressure break-gas-liquid separated experiment of seepage flow
System, including frame 1, the bottom of frame 1 is provided with closed slide 2, and closed slide 2 is provided with shifting
Dynamic dolly 3.
Frame 1 be fixedly arranged in the middle of oil cylinder 6, the piston 6a of oil cylinder 6 is fixed with displacement transducer 7, live
The external part of plug 6a is fixed with pressure transducer 8.
The bottom of frame 1 is provided with pressure chamber 100, and pressure chamber 100 includes the end being placed on mobile dolly 3
Lid 10, on bottom 10, bolt connects has the seat of honour 11, the upper end at the seat of honour 11 to be fixed with guide cover 12.Bottom
It is fixed with location bar 13 on 10, guide cover 12 is provided with the location hole 12a corresponding with positioning bar 13.
The center of guide cover 12 is combined with depression bar 14, is arranged with the first water hole 14a in depression bar 14 vertically in parallel
It is positioned at the center of depression bar 14 with the first pore 14b, the first water hole 14a.
The lower end threaded engagement of the first water hole 14a has seaming chuck 15, being provided centrally with and first of seaming chuck 15
Second water hole 15a of water hole 14a connection, seaming chuck 15 is provided with several and connects with the first pore 14b
The second pore 15b.
The lower end threaded engagement of the second water hole 15a has fracturing head 16.
The center of bottom 10 is fixed with wedge 17, and wedge 17 is fixed with column 18, the upper end of column 18
Being fixed with push-down head 19, push-down head 19 is provided with some 3rd pore 19a towards test specimen side.
Be provided with on wedge 17, column 18 and push-down head 19 and through portal 20, the 3rd pore 19 with go out
Hole 20 connects, and bottom 10 is provided with apopore 9.Portal 20 end connect and give vent to anger water out adapter 29.
Frame 1 is fixed on heating fuel tank 21, is provided with oil temperature sensor 22, heating in heating fuel tank 21
Pipe 23 and circulating pump 24.
Being provided with hoisting mechanism in frame 1, hoisting mechanism includes lifting speed reduction motor 25, lifting speed reduction motor
The power of 25 is transferred to the symmetrically arranged belt wheel of frame top 1 27 by transmission band 26.Belt wheel 27 is fixed on
On drive lead screw 28, fixing to the extension of the lower section of frame 1 top with the seat of honour 11 of drive lead screw 28.
Positive stop 4 can be set on drive lead screw, and travel switch 5 is set near screw mandrel, in order to automatically
Control.
Portal and 20 be connected with aqueous vapor separating and measuring system.Aqueous vapor separating and measuring system includes and gives vent to anger water out adapter
29 three-way valve 30 connected, three-way valve 30 has been simultaneously connected with the first stop valve 31 and the second stop valve 32.
Giving vent to anger water out adapter 29 has pressure transducer 42 with being connected on the connecting line of three-way valve 30, and pressure passes
Sensor 42 is connected with data collecting instrument 37.
Second stop valve 32 is connected with gas-liquid separator 33, and gas-liquid separator 33 even with cross valve 34 simultaneously
Connect.
Cross valve 34 has been simultaneously connected with the 3rd stop valve the 35, the 4th stop valve 38 and the 5th stop valve 39, the
Three stop valves 35 are connected with effusion meter 36, and effusion meter 36 is connected with data collecting instrument 37 simultaneously.4th section
Only valve 38 is connected with vacuum pump 40, and the 5th stop valve 39 is connected with vacuometer 41, vacuometer 41 and data
Acquisition Instrument 37 connects.
For guarantee test precision, gas liquid leakage need to be likely to occur at system and use Sealing Technology.
Above-mentioned experimental system is connected with gas cylinder, pump pressure servo supercharger and switch board, coal petrography can be carried out
Heat flow piercement pressure break-Seepage Experiment, specifically comprises the following steps that
(1) test material preparation.The infiltration of the tight sand obtained from scene, shale, raw coal or other reservoirs is situated between
Sillar or the coal cinder plastic sheeting good seal of matter are placed in the wooden case that size is suitable, then carry out with corning machine
Drill through coal core, finally utilize grinding machine that the coal core of taking-up is polished into protolith sample or the raw coal sample of Φ 50 × 100mm,
And it is placed in drying in oven.Utilizing bench drill test specimen end face after the drying to hole, aperture is
Φ 10mm, hole depth is not less than 30mm.In fracturing special nozzle epimere smear high intensity adhesive (as
AB glue) after put it in test specimen hole and suitably extrusion makes its contact surface smooth, then place and wait to do.
(2) test specimen is installed.First with 704 silicone rubber, test specimen side is smeared the glue-line of one layer of 1mm, to be spread
After glue-line parches completely, by fracturing special nozzle precession fracturing head 16, and test specimen is placed in seaming chuck
Between 15 and push-down head 19；Make each of test specimen and pressure head each in the face of neat, the outside seal of test specimen is first enclosed within examination
In the middle part of part, with hair dryer heat-shrink tube uniformly blown and tightly make that itself and test specimen are closely knit to be contacted；With two ferrules respectively
Tightly wale heat-shrink tube and seaming chuck and depression bar, the intersection of push-down head.Finally chain type radial displacement is passed
Sensor is installed on the medium position of test specimen, connects data transmission wiring, will be mobile little after test specimen installation
Car playbacks.
(3) installation.By good with bottom 10 para-position for the seat of honour 11 of triaxial cell, use under operation cashier's office in a shop
Drop switch activated motor 25, the pressure chamber seat of honour 11 is fallen, 8 on fixation pressure room in counterbore are installed
M10 screw, more fixing tighten 20, bottom M30 screw, should first tighten two screws in symmetric position,
Make lower cover steady contact pressure room, then tighten other screw；Connect gas and water corresponding import and export joint.
(4) temperature, evacuation are controlled.Use operation rising switch cashier's office in a shop to be mentioned by pressure chamber 100, move
Go out mobile dolly, use operation decline switch cashier's office in a shop to fall in heating fuel tank 21 by pressure chamber, set experiment
Temperature required.On vacuometer 41 table, the required vacuum (such as 300Pa) of experiment is set behind pressure chamber location,
Opening intake valve 43 and the water intaking valve 44 of pressure chamber upper end, the vacuum permutator starting switch board starts to start
Vacuum pump 40, opens the 4th stop valve 38 and the 5th stop valve 39 carries out evacuation, when experimental system is extracted into
Close after desired value and open the 4th stop valve the 38, the 5th stop valve 39, intake valve 43 and water intaking valve 44, so
Rear stopping vacuum pump.
(5) inflation adsorption equilibrium.According to stress of primary rock situation, control high-precision servo hydraulic pressure by computer
Pumping plant, operating cyloinder 6 action applies axial compression to test specimen, is passed through pressure oil simultaneously and executes to test specimen in pressure chamber
Add confined pressure, close out the first stop valve 31 and the second stop valve 32, open intake valve 44, regulate high pressure first
Alkane steel cylinder is given vent to anger valve, keeps gas pressure certain, inflates in test specimen, and inflationtime is generally 24h.
(6) original permeability is measured.According to experimental program (i.e. former according to residing for different rocks formulated
The parameters such as temperature, gas pressure, hydraulic pressure or flow, axial compression and the confined pressure of beginning environment set experiment) apply phase
After the axial compression answered and confined pressure, open the second stop valve 32 and the 3rd stop valve 35, and close the first stop valve
31, the data of reading flow gauge 36, measure test specimen original permeability.
(7) test specimen fracturing.Close intake valve the 44, first stop valve 31 and the second stop valve 32, beat
Drive water valve 43 into, apply corresponding hydraulic pressure by servo supercharger or flow carries out frac treatment to test specimen.
(8) permeability after pressure break is measured.Close water intaking valve 43, open intake valve 44 and be passed through relevant pressure
Gas, opens the second stop valve 32 and the 3rd stop valve 35, and closes the first stop valve 31, reads flow
Meter 36 data and gas-liquid separator 33 collected by fluid flow, thus can accurately measure gas flow and
Fluid flow, in order to the post-fracturing permeability of Accurate Determining test specimen.
(9) according to the experimental program formulated, regulation experiment condition.(6) are repeated according to experimental program
(8) step.
(10) next round experiment is carried out.After experiment is finished, dismantle test specimen, and repeat under above step carries out
One takes turns experiment.
According to test needs, test specimen can be made Φ 100 × 200mm, now, only need to change corresponding internal diameter
Guide cover 12.
The important technological parameters of above-mentioned experimental system is as follows:
1. maximum axial force: 1000kN
2. dynamometry precision: indicating value ± 1%
3. dynamometry stepping: fluid drive
4. force value control accuracy: indicating value ± 0.5% (precision of voltage regulation)
5. piston maximum displacement: 60mm
6. axial displacement accuracy: indicating value ± 1%
7. axial control mode: power controls, displacement
8. confined pressure span of control: 0～60MPa (AC servo pressurized cylinder mode)
9. confined pressure control accuracy: indicating value ± 1%
10. gas flow (outlet): 0～5L/min
11. test specimen temperature ranges: 0～100 DEG C, temperature fluctuation: ± 1 DEG C
12. gas pressure measurement precision: indicating value ± 1% (using 0.1 stage pressure sensor)
13. suctions: 6x10-2Pa
14. gas circuit maximum seal pressure: 20MPa
15. axial force experiment control modes: load, displacement closed loop control, can be carried out without impact conversion.
16. experimental waveforms: static, step loads, program control loading
17. noises :≤72dB
18. general powers: 6kW
19. main frame overall dimensions (long x width x is high): 1350x960x2874mm
20. Hydraulic Station overall dimensions (long x width x is high): 650x600x750mm
21. gross weight of equipment amount: 1300kg
In above-mentioned experiment, fracturing and permeability test are continuously finished on the same device, and therefore test is oozed
Thoroughly during rate, the crack that rock core produces because of pressure break will not re-close, and can be to the when carrying out permeability test
One pore 14b is passed through gas, thus the second pore 15b is to test specimen " face inflation ", it is thus possible to the most accurate
Record the change of permeability before and after in situ rock core pressure break；And can simultaneously accurately in experiments of measuring discharge and
Throughput, thus improve experimental precision.
On the other hand, pumped vacuum systems interests cleverly export pipeline, therefore can be more convenient to test specimen
Carry out evacuation process, and the vacuum within test specimen has been carried out visualization processing, make experiment condition more
Add accurately.
Meanwhile, can be in the pressure during methane steel cylinder exit arranges circulating pressure monitoring sensor, with export pipeline
Force transducer 42 with the use of, experiment condition can be made more accurate.
The preferred embodiment of the present invention described in detail above.Should be appreciated that the ordinary skill of this area
Personnel just can make many modifications and variations according to the design of the present invention without creative work.Therefore, all
Technical staff passes through logical analysis the most on the basis of existing technology, pushes away in the art
Reason or the limited available technical scheme of experiment, all should be at the protection model being defined in the patent claims
In enclosing.
Claims (3)
1. reservoir permeating medium heterogeneous fluid pressure break-gas-liquid separated experimental system of seepage flow, including frame (1)；The bottom of described frame (1) is provided with closed slide (2)；Mobile dolly (3) it is provided with on described closed slide (2)；Hoisting mechanism (200) it is provided with in described frame (1)；Described hoisting mechanism (200) is connected with pressure chamber (100)；Described frame (1) be fixedly arranged in the middle of oil cylinder (6)；It is fixed with displacement transducer (7) on the piston (6a) of described oil cylinder (6)；The external part of described piston (6a) is fixed with pressure transducer (8)；It is characterized in that:
Described pressure chamber (100) includes the bottom (10) being placed on described mobile dolly (3)；The upper bolt of described bottom (10) connects the seat of honour (11)；The upper end at the described seat of honour (11) is fixed with guide cover (12)；
The center of described guide cover (12) is combined with depression bar (14)；The first water hole (14a) and the first pore (14b) it is arranged with vertically in parallel in described depression bar (14)；Described first water hole (14a) is positioned at the center of described depression bar (14)；
The lower end threaded engagement of described first water hole (14a) has seaming chuck (15)；Second water hole (15a) being provided centrally with connecting with described first water hole (14a) of described seaming chuck (15)；Several the second pores (15b) connected with described first pore (14b) it are provided with on described seaming chuck (15)；
The lower end threaded engagement of described second water hole (15a) has protrusion described seaming chuck (15) lower surface and length to be noticeably greater than the fracturing head (16) of sectional dimension, and fracturing head (16) is formed the water outlet pore connected with described second water hole (15a)；
The center of described bottom (10) is fixed with wedge (17)；Column (18) it is fixed with on described wedge (17)；The upper end of described column (18) is fixed with push-down head (19)；Described push-down head (19) is provided with some 3rd pores (19a) towards test specimen side；
Through portal (20) it are provided with on described wedge (17), column (18) and push-down head (19)；Described 3rd pore (19a) portal with described (20) connect；Apopore (9) it is provided with on described bottom (10)；The end of described portal (20) connects water out adapter (29) of giving vent to anger；
Described frame (1) is fixed on heating fuel tank (21)；It is provided with oil temperature sensor (22) in described heating fuel tank (21), adds heat pipe (23) and circulating pump (24)；
Described hoisting mechanism (200) includes lifting speed reduction motor (25)；The power of described lifting speed reduction motor (25) is transferred to the symmetrically arranged belt wheel in described frame (1) top (27) by transmission band (26)；Described belt wheel (27) is fixed on drive lead screw (28)；Described drive lead screw (28) is fixed to the extension of the lower section of described frame (1) the top with the described seat of honour (11)；
Location bar (13) it is fixed with on described bottom (10)；The location hole (12a) corresponding with described location bar (13) it is provided with on described guide cover (12)；
Described portal (20) are connected with aqueous vapor separating and measuring system；Described aqueous vapor separating and measuring system includes the three-way valve (30) being connected with described water out adapter of giving vent to anger (29)；Described three-way valve (30) has been simultaneously connected with the first stop valve (31) and the second stop valve (32)；Described second stop valve (32) is connected with gas-liquid separator (33)；Described gas-liquid separator (33) is connected with cross valve (34) simultaneously；Described cross valve (34) has been simultaneously connected with the 3rd stop valve (35)；Described 3rd stop valve (35) is connected with effusion meter (36)；Described effusion meter (36) is connected with data collecting instrument (37) simultaneously.
2. reservoir permeating medium heterogeneous fluid pressure break-gas-liquid separated experimental system of seepage flow as claimed in claim 1, is characterized in that: described cross valve (34) is also associated with the 4th stop valve (38) and the 5th stop valve (39)；Described 4th stop valve (38) is connected with vacuum pump (40)；Described 5th stop valve (39) is connected with vacuometer (41)；Described vacuometer (41) is connected with described data collecting instrument (37).
3. reservoir permeating medium heterogeneous fluid pressure break-gas-liquid separated experimental system of seepage flow as claimed in claim 2, is characterized in that: described in give vent to anger water out adapter (29) and have pressure transducer (42) with being connected on the connecting line of described three-way valve (30)；Described pressure transducer (42) is connected with described data collecting instrument (37).
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| CN104596856B (en) * | 2015-01-16 | 2017-01-25 | 重庆大学 | Uniaxial tension compression system |
| CN111912760A (en) * | 2020-07-16 | 2020-11-10 | 中国水利水电科学研究院 | Test device and test method for simulating contact surface seepage coupling characteristics |
| CN112268844B (en) * | 2020-10-14 | 2023-04-07 | 浙大城市学院 | Seepage erosion control system and test method under GDS triaxial apparatus drainage condition |
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| FR2758628B1 (en) * | 1997-01-22 | 1999-02-12 | Inst Francais Du Petrole | METHOD AND DEVICE FOR IMPROVING THE DURATION OF USE OF A MEMBRANE INTERPOSED IN A FLUID CIRCULATION |
| CN101634621B (en) * | 2009-08-12 | 2011-05-25 | 重庆大学 | Fluid-solid-heat coupling triaxial servo percolation device for gas-contained coal |
| CN201780251U (en) * | 2010-07-26 | 2011-03-30 | 长江大学 | Dynamic contamination assessing experimental instrument for coal seam core under high-temperature and high-pressure conditions |
| CN202230009U (en) * | 2011-10-12 | 2012-05-23 | 上海大学 | Device for testing material permeable rate |
| CN102411044B (en) * | 2011-12-05 | 2014-04-30 | 中国石油大学(华东) | Diagenesis simulation experimental apparatus |
| CN102735548B (en) * | 2012-07-05 | 2014-07-02 | 重庆大学 | Multifunctional true triaxial flow solid coupling test system |
| CN102901803B (en) * | 2012-10-24 | 2014-10-08 | 河南理工大学 | Water-gas different adsorption-desorption-seepage experimental method for loaded coal containing methane |
| CN103234891B (en) * | 2013-04-22 | 2015-01-07 | 辽宁工程技术大学 | Low-permeability coal high-pressure gas cycle pulse fracturing anti-reflection experimental method |
| CN203191270U (en) * | 2013-04-25 | 2013-09-11 | 重庆地质矿产研究院 | Experimental device for pulse hydraulic fracturing reforms transform shale reservoir |
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