CN213540354U - Shaft simulation device for coal-bed gas well production process - Google Patents
Shaft simulation device for coal-bed gas well production process Download PDFInfo
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- CN213540354U CN213540354U CN202022609975.8U CN202022609975U CN213540354U CN 213540354 U CN213540354 U CN 213540354U CN 202022609975 U CN202022609975 U CN 202022609975U CN 213540354 U CN213540354 U CN 213540354U
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- 238000004088 simulation Methods 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003245 coal Substances 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000005012 migration Effects 0.000 abstract description 11
- 238000013508 migration Methods 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of simulation devices, in particular to a shaft simulation device for the production process of a coal-bed gas well, which comprises a simulation box body with a simulation coal bed, a shaft vertically arranged at the middle position of the simulation box body, a pump body, a first separator, a water outlet meter, a valve, a second separator, a gas outlet meter and a data acquisition and processor; one end of the pump body is connected with the upper end part of the shaft, and the other end of the pump body is sequentially connected with the first separator and the water outlet meter; one end of the valve is connected with the upper end part of the shaft, the other end of the valve is sequentially connected with the second separator and the gas outlet meter, and the water outlet meter and the gas outlet meter are both electrically connected with the data acquisition and processor; the utility model discloses based on buggy migration law, adopt simulation box and pit shaft combined action, the influence that the discharge capacity of on-the-spot simulation water velocity, the concentration of buggy, pump were migrated and carried to the buggy, and then the reason that degree of depth research and understanding buggy migrated, simple structure, convenient operation.
Description
Technical Field
The utility model relates to an analogue means technical field, concretely relates to pit shaft analogue means is used to coal bed gas well production process.
Background
The coal bed gas is used as clean and environment-friendly energy, is an important strategic supplement of conventional natural gas, and has important strategic significance for releasing emission reduction pressure, optimizing energy structure and realizing economic transformation in China. The main acquisition mode is ground drilling and exploitation, and underground water in the coal bed and surrounding rocks thereof is pumped and drained by using an artificial borehole, so that the pressure of a coal reservoir is reduced, methane gas adsorbed in the coal bed is desorbed and released, and the methane gas is transported to a wellhead to be collected through an oil lantern ring in an air transportation mode. Because the coal reservoir is sensitive to stress, the change of the coal reservoir needs to be known and mastered at any time in the collection process so as to adjust the drainage and production strength in time and maximize the exploitation of the coal bed gas. The most direct effect of coal reservoir changes is the flow characteristics and flow pattern of the fluids in the wellbore of the coal-bed gas well. The flow condition in the shaft is accurately determined, and the method has important significance for formulating a reasonable drainage and extraction system, avoiding blind extraction and realizing the maximization of the productivity.
In the prior art, the shaft can cause the migration of coal bed powder in the process of pumping water, so that the phenomena of pump blockage and pipeline blockage are caused, and in order to research the reason of the phenomenon, the shaft simulation device for the coal bed gas well production process needs to be designed to solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
To above problem, the utility model provides a pit shaft analogue means is used to coal seam gas well production process through the exploitation process of simulation coal bed gas for the reason of research and understanding buggy migration, simple structure, convenient operation.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a shaft simulation device for the production process of a coal-bed gas well comprises a simulation box body with a simulation coal bed, a shaft vertically arranged in the middle of the simulation box body, a pump body, a first separator, a water outlet meter, a valve, a second separator, a gas outlet meter and a data acquisition and processor; one end of the pump body is connected with the upper end part of the shaft, and the other end of the pump body is sequentially connected with the first separator and the water outlet meter; one end of the valve is connected with the upper end part of the shaft, the other end of the valve is sequentially connected with the second separator and the gas outlet meter, and the water outlet meter and the gas outlet meter are both electrically connected with the data acquisition and processor;
the pit shaft comprises an outer barrel, an inner barrel and a well head, wherein the inner barrel is arranged in the outer barrel, the well head is connected with the outer barrel through a flange plate, and the top end of the well head is connected with a pull rod.
Preferably, a first pressure sensor is arranged between the shaft and the valve, a second pressure sensor is arranged at the upper end part of the simulation box body, and the first pressure sensor and the second pressure sensor are both electrically connected with the data acquisition and processor; one side of the lower end part of the simulation box body is connected with a gas injection pipe, and the other side of the lower end part of the simulation box body is connected with a water injection pipe.
Preferably, the lower end of the outer barrel is provided with a plurality of perforation holes which are uniformly distributed on the outer surface of the outer barrel at intervals.
Preferably, the bottom of the inner cylinder is provided with a first one-way head, the bottom of the first one-way head is provided with an outer cap of the inner cylinder, a piston is arranged above the first one-way head, a second one-way head is connected above the piston, and the pull rod extends into the inner cylinder and is connected with the second one-way head.
Preferably, a pressure cap is arranged between the pull rod and the wellhead, and a first gasket and a second gasket are arranged between the pressure cap and the pull rod.
Preferably, the bottom of the outer cylinder is provided with an outer cylinder cap.
The utility model discloses beneficial effect:
the utility model discloses based on buggy migration law, adopt simulation box and pit shaft combined action, the influence that the discharge capacity of on-the-spot simulation water velocity, the concentration of buggy, pump were migrated and carried to the buggy, and then the reason of degree of depth research and understanding buggy migration avoids easily causing the phenomenon of card pump and jam pipeline in the actual coal bed gas well production process, simple structure, convenient operation.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic diagram of a shaft according to the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is an enlarged schematic view of a portion B in fig. 3.
In the figure: 1-simulation box body, 2-shaft, 3-pump body, 4-first separator, 5-water outlet meter, 6-valve, 7-second separator, 8-gas outlet meter, 9-data acquisition and processor, 10-outer cylinder, 11-inner cylinder, 12-wellhead, 13-flange, 14-pull rod, 15-first pressure sensor, 16-second pressure sensor, 17-gas injection pipe, 18-water injection pipe, 19-perforation hole, 20-first one-way head, 21-inner cylinder outer cap, 22-piston, 23-second one-way head, 24-press cap, 25-first gasket, 26-second gasket and 27-outer cylinder outer cap.
Detailed Description
The technical solution of the present invention will be described below with reference to the accompanying drawings and examples.
Referring to fig. 1-4, a shaft simulator for a coal-bed gas well production process comprises a simulation box body 1 with a simulation coal bed, a shaft 2 vertically arranged in the middle of the simulation box body 1, a pump body 3, a first separator 4, a water outlet meter 5, a valve 6, a second separator 7, an air outlet meter 8 and a data acquisition and processor 9; one end of the pump body 3 is connected with the upper end part of the shaft 2, and the other end of the pump body 3 is sequentially connected with a first separator 4 and a water outlet meter 5; one end of the valve 6 is connected with the upper end part of the shaft 2, the other end of the valve 6 is sequentially connected with a second separator 7 and an air outlet meter 8, and the water outlet meter 5 and the air outlet meter 8 are both electrically connected with a data acquisition and processor 9;
the shaft 2 comprises an outer cylinder 10, an inner cylinder 11 arranged inside the outer cylinder 10 and a well head 12, the well head 12 is connected with the outer cylinder 10 through a flange 13, and the top end of the well head 12 is connected with a pull rod 14.
A first pressure sensor 15 is arranged between the shaft 2 and the valve 6, a second pressure sensor 16 is arranged at the upper end of the simulation box body 1, and the first pressure sensor 15 and the second pressure sensor 16 are both electrically connected with the data acquisition and processor 9; one side of the lower end part of the simulation box body 1 is connected with a gas injection pipe 17, and the other side of the lower end part of the simulation box body 1 is connected with a water injection pipe 18.
Wherein, the lower end of the outer cylinder 10 is provided with a plurality of perforation holes 19, and the plurality of perforation holes 19 are uniformly distributed on the outer surface of the outer cylinder 10 at intervals.
In the embodiment, the simulation box body 1 and the shaft 2 act together, the pump body 3, the first separator 4, the water outlet meter 5, the valve 6, the second separator 7, the air outlet meter 8, the data acquisition and processor 9 and the like simulate the water flow rate on site, the concentration of pulverized coal and the influence of the pump displacement on the migration and carrying of the pulverized coal, the data acquisition and processor 9 acquires the corresponding data information of the water outlet meter 5 and the air outlet meter 8, and further, the workers carry out deep research on the data information, finally know the reason of the migration of the pulverized coal and make corresponding rectification measures, thereby avoiding the phenomena of pump blockage and pipeline blockage easily caused in the actual production process of the coal-bed gas well.
Specifically, referring to fig. 3 to 4, a first one-way head 20 is disposed at the bottom of the inner cylinder 11, an outer cylinder cap 21 is disposed at the bottom of the first one-way head 20, a piston 22 is disposed above the first one-way head 20, a second one-way head 23 is connected above the piston 22, and the pull rod 14 extends into the inner cylinder 11 and is connected with the second one-way head 23.
Wherein, a pressure cap 24 is arranged between the pull rod 14 and the wellhead 12, and a first gasket 25 and a second gasket 26 are arranged between the pressure cap 24 and the pull rod 14.
Wherein, the bottom of the outer cylinder 10 is provided with an outer cylinder cap 27.
In this embodiment, a steel wire rope can be connected with the pull rod 14, and the steel wire rope and the pull rod 14 are driven to move up and down under the action of a motor, a clutch and the like, so that the piston 22 is driven to do reciprocating motion of ascending and descending in the inner cylinder 11, and water pumping is performed; wherein, the first gasket 25 is a metal gasket, the second gasket 26 is a polytetrafluoroethylene gasket, and the tightness between the pull rod 14 and the wellhead 12 and between the pull rod and the pressure cap 24 is ensured through the double-layer gaskets arranged in sequence from top to bottom.
When the utility model is used, firstly, a certain amount of gas and water are respectively injected into the simulation box body 1 through the gas injection pipe 17 and the water injection pipe 18 and enter the cavity at the lower end part of the outer cylinder 10 through the plurality of perforation holes 19, at the moment, the steel wire rope and the pull rod 14 are driven to move up and down under the action of the motor, the clutch and the like, so that the piston 22 is driven to do reciprocating motion of rising and falling in the inner cylinder 11, and the action of pumping water is implemented; meanwhile, the data acquisition and processor 9 acquires corresponding data information of the water outlet meter 5, the gas outlet meter 8, the first pressure sensor 15, the second pressure sensor 16 and the like, and further, the data information is deeply researched by workers, so that the reason of coal dust migration is finally known, corresponding rectification measures are made, and the phenomena that a pump is blocked and a pipeline is blocked in the actual production process of the coal-bed gas well are avoided.
In addition, it should be noted that the motor, the clutch, the wire rope, the data acquisition and processing unit, etc. involved in the present embodiment are not substantially different from the prior art, and therefore the structure and the operation principle thereof are not described in detail herein.
In conclusion, the shaft simulation device for the coal-bed gas well production process is based on the coal powder migration rule, the simulation box body and the shaft are adopted to act together, the influences of the water flow rate, the concentration of coal powder and the discharge capacity of the pump on the migration and carrying of the coal powder are simulated on site, the reasons of the migration of the coal powder are further deeply researched and known, the phenomenon that the pump is blocked and a pipeline is blocked in the actual coal-bed gas well production process is avoided, the structure is simple, and the operation is convenient.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (6)
1. The utility model provides a pit shaft analogue means is used to coal bed gas well production process, includes simulation box (1) that has the simulation coal seam, vertically locates pit shaft (2) of simulation box (1) intermediate position, its characterized in that: the device also comprises a pump body (3), a first separator (4), a water outlet meter (5), a valve (6), a second separator (7), an air outlet meter (8) and a data acquisition and processor (9); one end of the pump body (3) is connected with the upper end part of the shaft (2), and the other end of the pump body (3) is sequentially connected with a first separator (4) and a water outlet meter (5); one end of the valve (6) is connected with the upper end part of the shaft (2), the other end of the valve (6) is sequentially connected with a second separator (7) and an air outlet meter (8), and the water outlet meter (5) and the air outlet meter (8) are both electrically connected with a data acquisition and processor (9);
shaft (2) include urceolus (10), locate inside inner tube (11) of urceolus (10) and well head (12), well head (12) are connected with urceolus (10) through ring flange (13), the top of well head (12) is connected with pull rod (14).
2. The wellbore simulation device for the production process of the coal-bed gas well as the: a first pressure sensor (15) is arranged between the shaft (2) and the valve (6), a second pressure sensor (16) is arranged at the upper end of the simulation box body (1), and the first pressure sensor (15) and the second pressure sensor (16) are both electrically connected with the data acquisition and processor (9); one side of the lower end part of the simulation box body (1) is connected with a gas injection pipe (17), and the other side of the lower end part of the simulation box body (1) is connected with a water injection pipe (18).
3. The wellbore simulation device for the production process of the coal-bed gas well as the: the lower end of the outer barrel (10) is provided with a plurality of perforation holes (19), and the perforation holes (19) are uniformly distributed on the outer surface of the outer barrel (10) at intervals.
4. The wellbore simulation device for the production process of the coal-bed gas well as the: the bottom of inner tube (11) is equipped with first one-way head (20), the bottom of first one-way head (20) is equipped with outer cap of inner tube (21), the top of first one-way head (20) is equipped with piston (22), second one-way head (23) are connected to the top of piston (22), pull rod (14) extend to inner tube (11) inside and be connected with second one-way head (23).
5. The wellbore simulation device for the production process of the coal-bed gas well as the: a pressure cap (24) is arranged between the pull rod (14) and the wellhead (12), and a first gasket (25) and a second gasket (26) are arranged between the pressure cap (24) and the pull rod (14).
6. The wellbore simulation device for the production process of the coal-bed gas well as the: an outer barrel cap (27) is arranged at the bottom of the outer barrel (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022609975.8U CN213540354U (en) | 2020-11-12 | 2020-11-12 | Shaft simulation device for coal-bed gas well production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022609975.8U CN213540354U (en) | 2020-11-12 | 2020-11-12 | Shaft simulation device for coal-bed gas well production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213540354U true CN213540354U (en) | 2021-06-25 |
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ID=76481559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022609975.8U Expired - Fee Related CN213540354U (en) | 2020-11-12 | 2020-11-12 | Shaft simulation device for coal-bed gas well production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213540354U (en) |
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2020
- 2020-11-12 CN CN202022609975.8U patent/CN213540354U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210625 |