CN107120112A - A kind of multiple seam coal bed gas is closed and adopts experimental provision - Google Patents
A kind of multiple seam coal bed gas is closed and adopts experimental provision Download PDFInfo
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- CN107120112A CN107120112A CN201710317364.6A CN201710317364A CN107120112A CN 107120112 A CN107120112 A CN 107120112A CN 201710317364 A CN201710317364 A CN 201710317364A CN 107120112 A CN107120112 A CN 107120112A
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- packing element
- test specimen
- seal assembly
- element seal
- coal bed
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Abstract
Closed the invention provides a kind of multiple seam coal bed gas and adopt experimental provision, including：Connected between test specimen packing element seal assembly (10), axle pressure loading system (20), confined pressure loading system (30), hole baric systerm (40) and mining system (50), two adjacent test specimen packing element seal assemblies (10).Experimental provision is adopted in multiple seam coal bed gas conjunction can truly simulate migration process of the gas in multiple seam during the conjunction of multiple seam coal bed gas is adopted, so as to monitor under the conditions of different coal petrography physical property, different inlet pressures, different outlet pressures, gas is in interior and interlayer the mobility status of multiple seam layer.
Description
Technical field
The present invention relates to coal-bed gas exploitation field of experiment equipment, particularly a kind of multiple seam coal bed gas, which is closed, adopts experiment dress
Put.
Background technology
China's coal gas industry has been enter into the stage of commercially producing, but is confined to Qinshui basin and Ordos Basin,
The Southwestern China Permian epoch and Xinjiang late Jurassic epoch are in time expanded to, the coal bed gas that be able to will be enriched with these areas of effective exploitation
Resource.The eastern regions of the Yunnan Province-the west of Guizhou Province area is one of south China coal resources the abundantest area, and a large amount of early-stage Studies show:Pass through
Coal exploration has obtained main verified containing coal to oblique coal resources and has been up to 1918.7 × 10 with prognostic reserves8T, coal rank is gas
Coal, anthracite, the air content in coal seam are high, and Coal bed gas project is up to 49117.9 × 108m3, in the interval coal seam of 200-1500m buried depths
Gas stock number is up to 29278.5 × 108m3, coal seam buried depth is moderate (being commonly 300-1500m), and common coal seam number is 27 layers~
42 layers.
Multiple seam bed gas reservoir, such as Chinese Eastern Yunnan Province And Guizhou Province, china are regional, Canadian Horseshoe Canyon (horseshoes
Paddy) and the U.S. the coal bed gas block such as Powder River (Fenhe River) basin, a bite coal bed gas well is often through tens coals
Layer (20 layers -40 layers), and single coal seam thickness is often than relatively thin (generally less than 2 meters), therefore for economical and effective
Thickness in monolayer is developed than relatively thin multiple seam bed gas reservoir in ground, generally requires progress multiple seam conjunction and adopts.But at present for many coals
The migration and simulation of fluid be often or using the thinking of single coal seam exploitation in layer, can so ignore mutually dry between multiple seam
Disturb, and cause the gas happening law understanding to multiple seam bed gas reservoir unintelligible, it is impossible to effectively instruct the height of multiple seam coal bed gas well
Effect exploitation.Therefore we are devised for being studied in multiple seam layer with the experimental provision of interflow in multiple seam interlayer and layer
The migration rule of fluid.
The experimental provision for being presently used for conventional multilayer oil-gas reservoir analog study is mainly using the parallel connection of multiple cylinder rock cores
Mode is simulated, and this physical analogy mode can only qualitatively analyze contribution situation of multiple oil-gas Layers to total yield, and
It is unable to the fluid migration situation between the multiple oil-gas Layers of accurate characterization.For there is a class to be to use in commingling production analogue means
Multiple reservoir cores of integral type mode in parallel, this analogue experiment installation mode more in parallel than simple multiple cylinder rock cores
Will more can accurate simulation multizone reservoir seepage flow situation, but still there are some defects in current design, such as supply face
Gas can not be evenly supplied problem, individual layer confined pressure axle pressure can not independent control problem etc..
The content of the invention
The problem of in order to solve fluid migration situation that existing experimental provision is unable between the multiple oil-gas Layers of accurate characterization,
Closed the invention provides a kind of multiple seam coal bed gas and adopt experimental provision, the multiple seam coal bed gas close adopt experimental provision being capable of true mould
Intend migration process of the gas in multiple seam during the conjunction of multiple seam coal bed gas is adopted, so as to monitor in different coal petrography physical property, no
Under the conditions of same inlet pressure, different outlet pressures, mobility status of the gas in multiple seam layer with interlayer.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of multiple seam coal bed gas is closed and adopts experimental provision, including：
Test specimen packing element seal assembly, for installing laboratory sample, multiple test specimen packing element seal assemblies are stacked, adjacent
Connected between two test specimen packing element seal assemblies；
Axle presses loading system, and the laboratory sample given in each test specimen packing element seal assembly that can be independent provides axle pressure, axle
The direction of pressure is identical with the stacked direction of test specimen packing element seal assembly；
Confined pressure loading system, the laboratory sample given in each test specimen packing element seal assembly that can be independent provides confined pressure；
Hole baric systerm, can be to gas injection in the laboratory sample in test specimen packing element seal assembly；
Mining system, can export the gas in the laboratory sample in test specimen packing element seal assembly.
The beneficial effects of the invention are as follows：
1st, it can more accurately simulate the conjunction of multiple seam bed gas reservoir and adopt flowing of the process fluid in individual layer between multiple seam
Process；
2nd, injection gas can be made to be uniformly injected into along entrance face；
3rd, three coal seams can control corresponding confined pressure and axle pressure respectively；
4th, the poromeric material used between two coal seams enables crossflow equably to carry out, and more meets practically
The situation of layer.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.
Fig. 1 is that multiple seam coal bed gas of the present invention closes the structural representation for adopting experimental provision major part.
Fig. 2 is the enlarged diagram of Fig. 1 middle and upper parts.
Fig. 3 is the schematic diagram after confined pressure chamber is moved up in Fig. 2.
Fig. 4 is the enlarged diagram at middle part in Fig. 1.
Fig. 5 is that multiple seam coal bed gas of the present invention closes the principle assumption diagram for adopting experimental provision major part.
Fig. 6 is the sectional view along A-A directions in Fig. 5.
Fig. 7 is that multiple seam coal bed gas of the present invention closes the general structure schematic diagram for adopting experimental provision.
10th, test specimen packing element seal assembly；11st, laboratory sample；12nd, packing element；13rd, gas permeable formation；14th, sealing gasket；15th, axle
To gas port；
20th, axle pressure loading system；21st, base；22nd, upper axial pressure head；23rd, upper load cylinder；24th, connecting plate；25th, it is oriented to
Post；26th, spheric seat；27th, middle load cylinder；28th, lower axial pressure head；29th, lower load cylinder；210th, axial pressure head；
211st, upper through hole；212nd, lower bending through hole；
30th, confined pressure loading system；31st, confined pressure chamber；32nd, confined pressure tracking pump；33rd, surge tank；34th, air compressor；35th, take out
Vacuum subassembly；
40th, hole baric systerm；41st, the first filling line；42nd, the second filling line；43rd, the 3rd filling line；44th, adjust
Pressure valve；45th, air accumulator；46th, gas boosting pump；47th, air compressor；48th, source of the gas；
50th, mining system；51st, the first air collecting pipe；52nd, the second air collecting pipe；53rd, the 3rd air collecting pipe；54th, counterbalance valve；55th, count
Measure component；56th, balance.
60th, framework；61st, reaction frame；62nd, crossbeam；63rd, workbench.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of multiple seam coal bed gas is closed and adopts experimental provision, including：
Test specimen packing element seal assembly 10, for installing laboratory sample 11, multiple test specimen packing element seal assemblies 10 are stacked,
Connected between two adjacent test specimen packing element seal assemblies 10；
Axle presses loading system 20, and the laboratory sample 11 given in each test specimen packing element seal assembly 10 that can be independent provides axle
Pressure, the direction of axle pressure suffered by each laboratory sample 11 is identical with the stacked direction of test specimen packing element seal assembly 10；
Confined pressure loading system 30, the offer of laboratory sample 11 given in each test specimen packing element seal assembly 10 that can be independent is enclosed
Pressure；
Hole baric systerm 40, can be to gas injection, the gas of injection in the laboratory sample 11 in test specimen packing element seal assembly 10
Body can be coal bed gas；
Mining system 50, can export the gas in the laboratory sample 11 in test specimen packing element seal assembly 10, such as Fig. 1 is extremely
Shown in Fig. 7.
Multiple seam coal bed gas conjunction adopts experimental provision and contains multiple test specimen packing element seal assemblies 10 to simulate multiple coal seams, many
Individual test specimen packing element seal assembly 10 can be stacked in the horizontal direction, vertical direction is stacked or incline direction stacking is set
Put.The laboratory sample 11 installed in two adjacent test specimen packing element seal assemblies 10 can be connected, so the multiple seam coal bed gas
Conjunction adopt experimental provision can more accurately simulate multiple seam bed gas reservoir close adopt stream of the process fluid in individual layer between multiple seam
Dynamic process.
In the present embodiment, test specimen packing element seal assembly 10 contains the packing element 12 being arranged successively from outside to inside, gas infiltration
Layer 13, gas permeable formation 13 is to form the sample cavity for installing laboratory sample 11 in tubular structure, gas permeable formation 13, adjacent
Two test specimen packing element seal assemblies 10 the sample cavity between connect, the center line of packing element 12 is along test specimen packing element seal assembly 10
Stacked direction set, the two ends of packing element 12 are equipped with sealing gasket 14, and packing element 12 is tightly connected with sealing gasket 14, gas permeable formation
13 two ends are connected with sealing gasket 14 respectively, and being provided with sealing gasket 14 can be by axial air guide derived from gas in laboratory sample 11
Hole 15, the center line of axial gas port 15 deviates the center line of sealing gasket 14, and the center of laboratory sample 11 is provided with central through hole, should
Central through hole is not connected with axial gas port 15, and being provided with the side wall of packing element 12 is used for the injection of the gas injection into gas permeable formation 13
Hole, gas permeable formation 13 is that the material with preferable gas penetrating power is made, and gas permeable formation 13 can be for polypropylene fibre
The cylinder that blanket is rolled into, as shown in figure 5, experimental gas, which can sequentially pass through packing element 12, gas permeable formation 13, enters laboratory sample 11
Interior, laboratory sample 11 can be rock core or coal sample.Connected between the sample cavity of two adjacent test specimen packing element seal assemblies 10,
Mobility status of the gas with interlayer in multiple seam layer can be simulated.
In the present embodiment, experimental provision is adopted in multiple seam coal bed gas conjunction can include what is be cascading from the top down
Multiple test specimen packing element seal assemblies 10, as shown in figure 1, being provided with the bottom of tabular between two adjacent test specimen packing element seal assemblies 10
Seat 21, confined pressure loading system 30 contains the confined pressure chamber 31 being sheathed on outside each test specimen packing element seal assembly 10, confined pressure chamber 31 and examination
The sealing space of ring-type, the quantity of confined pressure chamber 31 and the number of test specimen packing element seal assembly 10 are formed between part packing element seal assembly 10
Amount is identical, and confined pressure chamber 31 is corresponded with test specimen packing element seal assembly 10, and confined pressure chamber 31 is used to seal to each test specimen packing element
Laboratory sample 11 in component 10 provides confined pressure.
It is preferred that the multiple seam coal bed gas, which is closed, adopts three test specimen packing elements that experimental provision includes being cascading from the top down
The upper surface sealing of seal assembly 10 and confined pressure chamber 31, the lower end of the test specimen packing element seal assembly 10 on top and the base 21 on top
It is fixedly connected, the upper end interior sealing of the confined pressure chamber 31 on top is plugged with axial pressure head 22, and axle pressure loading system 20 adds containing upper
The top of the confined pressure chamber 31 on load oil cylinder 23, the upper superposed test specimen packing element seal assembly 10 of load cylinder 23 and top, it is upper to add
The test specimen packing element seal assembly 10 that oil cylinder 23 can promote axial pressure head 22 to be pressed down against top is carried, upper load cylinder 23 is only
Laboratory sample 11 in the test specimen packing element seal assembly 10 on top provides confined pressure.
In the present embodiment, upper load cylinder 23 passes sequentially through connecting plate 24 and lead 25 and is connected with the base 21 on top
It is fixed, connected between upper axial pressure head 22 and the test specimen packing element seal assembly 10 on top by spheric seat 26, the knot of spheric seat 26
Structure is as shown in Fig. 2 part of the spheric seat 26 containing two spherical male-females.Contain upper through hole 211 in the base 21 on top,
Center line of through hole 211 deviates the center line coincidence of the packing element 12 of the test specimen packing element seal assembly 10 on top, exploitation system on this
System 50 includes the first air collecting pipe 51, and the first air collecting pipe 51 can sequentially pass through the experiment in the test specimen packing element seal assembly 10 on top
The central through hole of sample 11 and the sealing gasket 14 of the middle and upper part of test specimen packing element seal assembly 10 on top, such first air collecting pipe
51 can export the gas in the laboratory sample 11 in the test specimen packing element seal assembly 10 on top, as shown in Figure 5.The examination on top
Laboratory sample 11 in the test specimen packing element seal assembly 10 of laboratory sample 11 and middle part in part packing element seal assembly 10 can be according to
The axial gas port 15 of the sealing gasket 14 of the secondary middle and lower part of test specimen packing element seal assembly 10 by top, upper through hole 211 and in
The axial gas port 15 of the sealing gasket 14 of the internal upper part of test specimen packing element seal assembly 10 in portion is connected.But the test specimen packing element sealing on top
The center of the central through hole of laboratory sample 11 in component 10 and the laboratory sample 11 in the test specimen packing element seal assembly 10 at middle part
Through hole is not connected.
In the present embodiment, the lower surface sealing of the base 21 on the upper end of the test specimen packing element seal assembly 10 at middle part and top
It is fixedly connected, the upper surface of the lower end of the test specimen packing element seal assembly 10 at middle part and the base 21 of bottom is sealedly and fixedly connected, axle
Press loading system 20 to contain middle load cylinder 27, the base 21 of the middle superposed base 21 of load cylinder 27 and bottom it
Between, and middle load cylinder 27, outside the confined pressure chamber 31 at middle part, middle load cylinder 27 can be three to four, and centre adds
The two ends for carrying oil cylinder 27 are connected with the base 21 on top and the base 21 of bottom respectively, and middle load cylinder 27 can shorten top
Base 21 and bottom the distance between base 21, so as to be the laboratory sample 11 in the test specimen packing element seal assembly 10 at middle part
Confined pressure is provided.
In the present embodiment, the lower end of the test specimen packing element seal assembly 10 at middle part passes through spheric seat 26 and the base 21 of bottom
Connection, mining system 50 includes the second air collecting pipe 52, and the second air collecting pipe 52 can sequentially pass through the test specimen packing element sealing group at middle part
In the sealing gasket 14 of the middle and upper part of test specimen packing element seal assembly 10 and the base 21 on top of laboratory sample 11, middle part in part 10
Horizontal connecting hole, such second air collecting pipe 52 can be by the gas in the laboratory sample 11 in the test specimen packing element seal assembly 10 at middle part
Body is exported, as shown in Figure 5.
In the present embodiment, the lower surface sealing of the base 21 of the upper end of the test specimen packing element seal assembly 10 of bottom and bottom
It is fixedly connected, the lower end interior sealing of the confined pressure chamber 31 of bottom is plugged with lower axial pressure head 28, and axle pressure loading system 20 adds containing lower
Oil cylinder 29 is carried, lower load cylinder 29 is located at the lower section of the test specimen packing element seal assembly 10 of bottom and the confined pressure chamber 31 of bottom, lower to add
The test specimen packing element seal assembly 10 of the upward bottom of lower axial pressure head 28 can be promoted by carrying oil cylinder 29, so as to be the test specimen of bottom
Laboratory sample 11 in packing element seal assembly 10 provides confined pressure.
In the present embodiment, lower load cylinder 29 passes sequentially through connecting plate 24 and lead 25 and is connected with the base 21 of bottom
It is fixed, connected between lower axial pressure head 28 and the test specimen packing element seal assembly 10 of bottom by spheric seat 26, the test specimen glue at middle part
Laboratory sample 11 in cylinder seal assembly 10 can lead to successively with the laboratory sample 11 in the test specimen packing element seal assembly 10 of bottom
Under in axial gas port 15, the base 21 of bottom in the sealing gasket 14 of the middle and lower part of test specimen packing element seal assembly 10 in the middle part of crossing
Bending through hole 212 is connected with the axial gas port 15 in the sealing gasket 14 of the middle and upper part of test specimen packing element seal assembly 10 of bottom, but
The central through hole and the test specimen packing element seal assembly 10 of bottom of the laboratory sample 11 in test specimen packing element seal assembly 10 in the middle part of being
In the central through hole of laboratory sample 11 do not connect.Mining system 50 includes the 3rd air collecting pipe 53, and the 3rd air collecting pipe 53 can be according to
The central through hole of laboratory sample 11 in the secondary test specimen packing element seal assembly 10 through bottom and the test specimen packing element of bottom are close
The sealing gasket 14 of the middle and lower part of sealing assembly 10, such 3rd air collecting pipe 53 can be by the reality in the test specimen packing element seal assembly 10 of bottom
The gas export tested in sample 11, as shown in Figure 5.
In the present embodiment, hole baric systerm 40 includes the first filling line 41, the second filling line 42 and the 3rd note
Enter pipeline 43, the first filling line 41 can pass sequentially through the passage in axial pressure head 22 and the test specimen packing element sealing group on top
The hand-hole in packing element 12 in part 10 is connected with the gas permeable formation 13 in the test specimen packing element seal assembly 10 on top, the second note
Enter in the horizontal connecting hole in the left side of base 21 and the test specimen packing element seal assembly 10 at middle part that pipeline 42 can pass sequentially through top
Packing element 12 in hand-hole connected with the gas permeable formation 13 in the test specimen packing element seal assembly 10 at middle part；3rd filling line
43 can pass sequentially through the packing element in the horizontal connecting hole in the left side of base 21 and the test specimen packing element seal assembly 10 of bottom of bottom
Hand-hole in 12 is connected with the gas permeable formation 13 in the test specimen packing element seal assembly 10 of bottom.First filling line 41,
It is parallel relationship between two filling lines 42 and the 3rd filling line 43, the first air collecting pipe 51, the second air collecting pipe 52 and the 3rd are adopted
Also it is parallel relationship between tracheae 53.
In the present embodiment, confined pressure loading system 30 also include confined pressure tracking pump 32, surge tank 33, air compressor 34,
Vacuumizing assembly 35.Hole baric systerm 40 also include pressure regulator valve 44, air accumulator 45, gas boosting pump 46, air compressor 47,
Source of the gas 48.50th, mining system also includes counterbalance valve 54 and gauge assembly 55.Experimental provision is adopted in multiple seam coal bed gas conjunction also to be included
DATA REASONING and acquisition system for measuring and gathering experiment parameter, DATA REASONING and acquisition system being capable of measurement experiment samples
Pressure, injection flow, quantum of output in 11 etc., as shown in Figure 7.
The multiple seam coal bed gas, which is closed, adopts experimental provision also including multiple seam coal bed gas conjunction can be supported to adopt experimental provision
Framework 60, the framework 60 contains reaction frame 61, crossbeam 62 and workbench 63, and reaction frame 61 and crossbeam 62 are overall by high strength steel
Forging molding, the small piston rod that confined pressure chamber 31 can be arranged by four post upper ends is lifted by crane to confined pressure chamber 31, is saved and was tested
Manpower and materials in journey, improve experiment effect.
The course of work that experimental provision is adopted in multiple seam coal bed gas conjunction is, first in each test specimen packing element seal assembly 10
Installation laboratory sample 11 constitutes multiple seam coal bed gas conjunction as shown in Figure 1 and adopts experimental provision.Secondly, the axle pressure work of loading system 20
Make, the laboratory sample 11 into each test specimen packing element seal assembly 10 provides axle pressure, and confined pressure loading system 30 works, to each examination
Laboratory sample 11 in part packing element seal assembly 10 provides confined pressure, and hole baric systerm 40 works, by gas permeable formation 13 to
Gas injection in laboratory sample 11 in test specimen packing element seal assembly 10.Then, mining system 50 works, the first air collecting pipe 51, second
The air collecting pipe 53 of air collecting pipe 52 and the 3rd respectively exports the gas in corresponding laboratory sample 11, and DATA REASONING and acquisition system are surveyed
Measure and gather the pressure condition aerogenesis situation in each laboratory sample 11.
It is described above, it is only the specific embodiment of the present invention, it is impossible to which the scope implemented is invented with its restriction, so it is equivalent
The displacement of component, or the equivalent variations made according to scope of patent protection of the present invention and modification, should all still fall within what this patent was covered
Category.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical scheme, technical scheme with
It can be used between technical scheme with independent assortment.
Claims (10)
1. a kind of multiple seam coal bed gas is closed and adopts experimental provision, it is characterised in that experimental provision is adopted in multiple seam coal bed gas conjunction to be included：
Test specimen packing element seal assembly (10), for installing laboratory sample (11), multiple test specimen packing element seal assembly (10) stackings are set
Put, connected between two adjacent test specimen packing element seal assemblies (10)；
Axle pressure loading system (20), the laboratory sample (11) given in each test specimen packing element seal assembly (10) that can be independent is provided
Axle pressure, the direction of axle pressure is identical with the stacked direction of test specimen packing element seal assembly (10)；
Confined pressure loading system (30), the laboratory sample (11) given in each test specimen packing element seal assembly (10) that can be independent is provided
Confined pressure；
Hole baric systerm (40), laboratory sample (11) interior gas injection that can be into test specimen packing element seal assembly (10)；
Mining system (50), can export the gas in the laboratory sample (11) in test specimen packing element seal assembly (10).
2. multiple seam coal bed gas according to claim 1 is closed and adopts experimental provision, it is characterised in that test specimen packing element seal assembly
(10) containing the packing element (12) and gas permeable formation (13) being arranged successively from outside to inside, gas permeable formation (13) is tubular structure,
The sample cavity for installing laboratory sample (11), two adjacent test specimen packing element seal assemblies are formed in gas permeable formation (13)
(10) connected between the sample cavity, the stacked direction of the center line of packing element (12) along test specimen packing element seal assembly (10) is set,
The two ends of packing element (12) are equipped with sealing gasket (14), and packing element (12) is tightly connected with sealing gasket (14), are provided with sealing gasket (14)
It can be used to ooze to gas by being provided with axial gas port (15), the side wall of packing element (12) derived from laboratory sample (11) interior gas
The hand-hole of permeable layers (13) interior gas injection.
3. multiple seam coal bed gas according to claim 2 is closed and adopts experimental provision, it is characterised in that the multiple seam coal bed gas is closed
Adopt multiple test specimen packing element seal assemblies (10) that experimental provision includes being cascading from the top down, two adjacent test specimen glue
The base (21) of tabular is provided between cylinder seal assembly (10), confined pressure loading system (30) is close containing each test specimen packing element is sheathed on
The confined pressure chamber (31) of sealing assembly (10) outside, the sealing that ring-type is formed between confined pressure chamber (31) and test specimen packing element seal assembly (10) is empty
Between.
4. multiple seam coal bed gas according to claim 3 is closed and adopts experimental provision, it is characterised in that the multiple seam coal bed gas is closed
Adopt three test specimen packing element seal assemblies (10) and confined pressure chamber (31) that experimental provision includes being cascading from the top down, top
The lower end of test specimen packing element seal assembly (10) and the upper surface of base (21) on top be sealedly and fixedly connected, the confined pressure chamber on top
(31) upper end interior sealing is plugged with axial pressure head (22), and axle pressure loading system (20) contains upper load cylinder (23), upper to add
The top of oil cylinder (23) superposed test specimen packing element seal assembly (10) is carried, upper load cylinder (23), which can promote, axially to be pressed
Head (22) is pressed down against the test specimen packing element seal assembly (10) on top.
5. multiple seam coal bed gas according to claim 4 is closed and adopts experimental provision, it is characterised in that upper load cylinder (23) according to
It is secondary to be connected by connecting plate (24) and lead (25) and the base (21) on top, upper axial pressure head (22) and the examination on top
Connected between part packing element seal assembly (10) by spheric seat (26), upper through hole (211) is contained in the base (21) on top, should
The center line of upper through hole (211) deviates the center line of the packing element (12) of the test specimen packing element seal assembly (10) on top, exploitation system
System (50) includes the first air collecting pipe (51), and the first air collecting pipe (51) can sequentially pass through the test specimen packing element seal assembly (10) on top
In laboratory sample (11) and sealing gasket (14), the first air collecting pipe (51) can be by the test specimen packing element seal assembly (10) on top
Laboratory sample (11) in gas export.
6. multiple seam coal bed gas according to claim 3 is closed and adopts experimental provision, it is characterised in that the multiple seam coal bed gas is closed
Three test specimen packing element seal assemblies (10) that experimental provision includes being cascading from the top down are adopted, the test specimen packing element at middle part is close
The lower surface of the upper end of sealing assembly (10) and the base (21) on top is tightly connected, the test specimen packing element seal assembly (10) at middle part
The upper surface of the base (21) of lower end and bottom is tightly connected, and axle pressure loading system (20) contains middle load cylinder (27), in
Between between load cylinder (27) superposed base (21) and the base (21) of bottom, and during middle load cylinder (27) is located at
Outside, the two ends of middle load cylinder (27) connect the confined pressure chamber (31) in portion with the base (21) on top and the base (21) of bottom respectively
Connect, middle load cylinder (27) can shorten the distance between the base (21) on top and the base (21) of bottom.
7. multiple seam coal bed gas according to claim 6 is closed and adopts experimental provision, it is characterised in that the test specimen packing element at middle part is close
The lower end of sealing assembly (10) is connected by spheric seat (26) with the base (21) of bottom, and mining system (50) includes the second air collecting pipe
(52), the second air collecting pipe (52) can sequentially pass through the laboratory sample (11) and close in the test specimen packing element seal assembly (10) at middle part
Packing (14), the second air collecting pipe (52) can be by the gas in the laboratory sample (11) in the test specimen packing element seal assembly (10) at middle part
Body is exported.
8. multiple seam coal bed gas according to claim 3 is closed and adopts experimental provision, it is characterised in that the multiple seam coal bed gas is closed
Three test specimen packing element seal assemblies (10) that experimental provision includes being cascading from the top down are adopted, the test specimen packing element of bottom is close
The lower surface of the upper end of sealing assembly (10) and the base (21) of bottom is sealedly and fixedly connected, in the lower end of the confined pressure chamber (31) of bottom
Sealing is plugged with lower axial pressure head (28), and axle pressure loading system (20) contains lower load cylinder (29), lower load cylinder (29) position
In the lower section of the test specimen packing element seal assembly (10) of bottom, lower load cylinder (29) can promote lower axial pressure head (28) to squeeze upwards
The test specimen packing element seal assembly (10) of depression.
9. multiple seam coal bed gas according to claim 8 is closed and adopts experimental provision, it is characterised in that lower load cylinder (29) according to
It is secondary to be connected by connecting plate (24) and lead (25) and the base (21) of bottom, lower axial pressure head (28) and the examination of bottom
Connected between part packing element seal assembly (10) by spheric seat (26), mining system (50) includes the 3rd air collecting pipe (53), the 3rd
Air collecting pipe (53) can sequentially pass through laboratory sample (11) and sealing gasket (14) in the test specimen packing element seal assembly (10) of bottom,
3rd air collecting pipe (53) can export the gas in the laboratory sample (11) in the test specimen packing element seal assembly (10) of bottom.
10. multiple seam coal bed gas according to claim 1 is closed and adopts experimental provision, it is characterised in that the multiple seam coal bed gas
Experimental provision is adopted in conjunction also to be included：
DATA REASONING and acquisition system, for measuring and gathering experiment parameter；
Framework, can support the multiple seam coal bed gas to close and adopt experimental provision.
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| CN201710317364.6A CN107120112B (en) | 2017-05-05 | 2017-05-05 | Multi-coal-bed gas combined mining experimental device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709266A (en) * | 2018-12-03 | 2019-05-03 | 中国石油集团川庆钻探工程有限公司 | A kind of straight well stratified reservoir flowing simulated experiment device and method |
| CN110672490A (en) * | 2019-10-14 | 2020-01-10 | 辽宁工程技术大学 | Coal bed gas multilayer commingled production experimental device and method for simulating bottom hole pressure |
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| CN116298175A (en) * | 2022-12-23 | 2023-06-23 | 重庆大学 | Gas outburst simulation test system capable of monitoring stress, temperature and gas pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709266A (en) * | 2018-12-03 | 2019-05-03 | 中国石油集团川庆钻探工程有限公司 | A kind of straight well stratified reservoir flowing simulated experiment device and method |
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| CN110672490B (en) * | 2019-10-14 | 2022-03-25 | 辽宁工程技术大学 | Coal bed gas multilayer commingled production experimental device and method for simulating bottom hole pressure |
| CN114428044A (en) * | 2020-09-22 | 2022-05-03 | 中国石油化工股份有限公司 | System and method for measuring interbedded channeling characteristics of fracture type interface |
| CN113187448A (en) * | 2021-06-17 | 2021-07-30 | 中国石油化工股份有限公司 | Multi-coal-bed gas combined mining equipment |
| CN116298175A (en) * | 2022-12-23 | 2023-06-23 | 重庆大学 | Gas outburst simulation test system capable of monitoring stress, temperature and gas pressure |
| CN116298175B (en) * | 2022-12-23 | 2023-10-13 | 重庆大学 | Gas outburst simulation test system capable of monitoring stress, temperature and gas pressure |
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