CN207245690U - Inject substitution gas exploiting coal bed methane experimental rig - Google Patents
Inject substitution gas exploiting coal bed methane experimental rig Download PDFInfo
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- CN207245690U CN207245690U CN201721317882.XU CN201721317882U CN207245690U CN 207245690 U CN207245690 U CN 207245690U CN 201721317882 U CN201721317882 U CN 201721317882U CN 207245690 U CN207245690 U CN 207245690U
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- cylinder barrel
- pit shaft
- closed cylinder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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Abstract
The utility model discloses one kind to inject substitution gas exploiting coal bed methane experimental rig, including closed cylinder barrel（1）, the closed cylinder barrel（1）Interior filling coal dust is as coal seam（2）, the closed cylinder barrel（1）Side wall is equipped with confined pressure pressue device（6）And electric boiling plate（8）, its top be equipped with cover pressure pressue device（7）, the coal seam（2）Central part is embedded with simulation output pit shaft（3）、N2Inject pit shaft（4）And CO2Inject pit shaft（5）, the simulation output pit shaft（3）It is pierced by closed cylinder barrel（1）After connect gas-guide tube（9）, the gas-guide tube（9）Upper installation flow measurement device（10）, the N2Inject pit shaft（4）It is pierced by closed cylinder barrel（1）After connect nitrogen source（11）, the CO2Inject pit shaft（5）It is pierced by closed cylinder barrel（1）After connect carbon source（12）.Simulated by experimental rig in coal bed gas well carbon dioxide and nitrogen displacement procedure, two methods are under different Temperature-pressure Conditions to the displacement effect of methane gas.
Description
Technical field
The utility model belongs to coal bed gas energy extraction field, is specially a kind of injection substitution gas exploiting coal bed methane experiment
Device.
Background technology
At present, coal-bed gas exploitation is mainly the mode of production with water pumping gas production, and principle is the stratum by reducing stratum
Pressure makes methane gas gradually be desorbed from coal seam, and this mode is more effective to the preferable stratum of physical property having, still
Some stratum reservoir pressures are difficult to be down to below the saturation pressure of methane by commonsense method, therefore, seek other effective sides
Method is to solve the necessary means of problems, after this experimental provision is using nitrogen and carbon dioxide injection stratum, with methane
The principle of displacement effect occurs for gas, devises experimental provision and carrys out gas generation process under simulated injection state, is to this new side
A kind of trial of method aerogenesis.
The content of the invention
The utility model aim is to provide a kind of injection substitution gas exploiting coal bed methane experimental rig, complete carbon dioxide,
The simulation test device of coal bed gas well effect of increasing production is studied under nitrogen concentration different in injection process.
The utility model adopts the following technical scheme that realization：
One kind injection substitution gas exploiting coal bed methane experimental rig, including closed cylinder barrel, the interior filling coal of the closed cylinder barrel
Powder is as coal seam, and the closed cylinder barrel side wall is equipped with confined pressure pressue device and electric boiling plate, its top are equipped with and cover pressure pressue device,
The coal seam central part is embedded with simulation output pit shaft, N2Inject pit shaft and CO2Pit shaft is injected, the simulation output pit shaft is pierced by
Gas-guide tube is connected after closed cylinder barrel, flow measurement device, the N are installed on the gas-guide tube2Injection pit shaft is pierced by closed cylinder barrel
After connect nitrogen source, the CO2Injection pit shaft connects carbon source after being pierced by closed cylinder barrel.
In coal seam is simulated, arrange three mouthfuls of simulation wellbore holes, flatly as outlet well, be in addition used separately as carbon dioxide for two mouthfuls
Injection well and nitrogen injection well.At a constant injection pressure, nitrogen is first injected, injection pressure is consistent with strata pressure,
Change confined pressure, cover pressure, opens electric boiling plate, observes the methane output change of outlet well.Inject carbon dioxide, injection pressure with
Strata pressure is consistent, and change confined pressure, cover pressure, opens electric boiling plate, observes the methane output change of outlet well.Note at the same time
Enter carbon dioxide and nitrogen, injection pressure is consistent with strata pressure, and change confined pressure, cover pressure, opens electric boiling plate, observes
The methane output change of gas well.
The beneficial effects of the utility model are to simulate coal bed gas well carbon dioxide and nitrogen displacement method by experimental rig
During, two methods are under different Temperature-pressure Conditions to the displacement effect of methane gas.
Brief description of the drawings
Fig. 1 shows the structure diagram of the utility model.
In figure, the closed cylinder barrels of 1-, 2- coal seams, 3- simulation output pit shafts, 4-N2 injection pit shafts, 5-CO2 injection pit shafts, 6- encloses
Pressue device is pressed, 7- covers pressure pressue device, 8- electric boiling plates, 9- gas-guide tubes, 10- flow measurement devices, 11- nitrogen sources, 12- carbon
Source.
Embodiment
Specific embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
One kind injection substitution gas exploiting coal bed methane experimental rig, as shown in Figure 1, including closed cylinder barrel 1, the closed cylinder
Filling coal dust is as coal seam 2 in cylinder 1, and closed 1 side wall of cylinder barrel is equipped with confined pressure pressue device 6 and electric boiling plate 8, its top are set
Have and cover pressure pressue device 7,2 central part of coal seam is embedded with simulation output pit shaft 3, N2Inject pit shaft 4 and CO2Pit shaft 5 is injected,
The simulation output pit shaft 3 connects gas-guide tube 9 after being pierced by closed cylinder barrel 1, and flow measurement device 10 is installed on the gas-guide tube 9,
The N2Injection pit shaft 4 connects nitrogen source 11, the CO after being pierced by closed cylinder barrel 12Injection pit shaft 5 connects carbon after being pierced by closed cylinder barrel 1
Source 12.
When it is implemented, according to realistic simulation situation, the diameter of closed cylinder barrel is at several meters even more than ten meters（1-15m is left
It is right）.In coal seam 2 is simulated, three mouthfuls of simulation wellbore holes are arranged, flatly as outlet well（Simulate output pit shaft 3）, other two mouthfuls of difference
As carbon dioxide injection well（CO2Inject pit shaft 5）With nitrogen injection well（N2Inject pit shaft 4）.At a constant injection pressure,
Air pump injection nitrogen is first passed through, injection pressure is consistent with strata pressure, by confined pressure pressue device 6 and covers pressure pressue device
7 change confined pressures, cover pressure, opens electric boiling plate 8, the methane output for simulating output pit shaft 3 is observed by flow measurement device 10
Change.Carbon dioxide is injected by air pump again, injection pressure is consistent with strata pressure, by confined pressure pressue device 6 and covers
Pressure pressue device 7 changes confined pressure, covers pressure, opens electric boiling plate 8, simulation output pit shaft 3 is observed by flow measurement device 10
Methane output changes.Carbon dioxide and nitrogen are injected at the same time, and injection pressure is consistent with strata pressure, pressurizes by confined pressure
Device 6 and cover pressure pressue device 7 and change confined pressure, cover pressure, open electric boiling plate 8, pass through the observation simulation of flow measurement device 10 and produce
Go out the methane output change of pit shaft 3.By simulating in coal bed gas well carbon dioxide and nitrogen displacement procedure, two methods
To the displacement effect of methane gas under different Temperature-pressure Conditions.
It should be pointed out that for the those skilled in the art of the art, before the utility model principle is not departed from
Put, some improvement and application can also be made, these are improved and application is also considered as the scope of protection of the utility model.
Claims (1)
1. one kind injection substitution gas exploiting coal bed methane experimental rig, including closed cylinder barrel（1）, the closed cylinder barrel（1）It is built-in
Coal dust is filled out as coal seam（2）, it is characterised in that：The closed cylinder barrel（1）Side wall is equipped with confined pressure pressue device（6）And electric boiling plate
（8）, its top be equipped with cover pressure pressue device（7）, the coal seam（2）Central part is embedded with simulation output pit shaft（3）、N2Injection well
Cylinder（4）And CO2Inject pit shaft（5）, the simulation output pit shaft（3）It is pierced by closed cylinder barrel（1）After connect gas-guide tube（9）, it is described
Gas-guide tube（9）Upper installation flow measurement device（10）, the N2Inject pit shaft（4）It is pierced by closed cylinder barrel（1）After connect nitrogen source
（11）, the CO2Inject pit shaft（5）It is pierced by closed cylinder barrel（1）After connect carbon source（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721317882.XU CN207245690U (en) | 2017-10-13 | 2017-10-13 | Inject substitution gas exploiting coal bed methane experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721317882.XU CN207245690U (en) | 2017-10-13 | 2017-10-13 | Inject substitution gas exploiting coal bed methane experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207245690U true CN207245690U (en) | 2018-04-17 |
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ID=61891271
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| CN201721317882.XU Active CN207245690U (en) | 2017-10-13 | 2017-10-13 | Inject substitution gas exploiting coal bed methane experimental rig |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296353A (en) * | 2018-09-13 | 2019-02-01 | 中国海洋石油集团有限公司 | A kind of various dimensions experimental provision and its application method for coal bed gas extraction research |
| CN110608022A (en) * | 2019-08-28 | 2019-12-24 | 中联煤层气有限责任公司 | Carbon dioxide landfill method for increasing yield of coal bed gas reservoir |
| CN117665305A (en) * | 2024-02-01 | 2024-03-08 | 山西华新气体能源研究院有限公司 | Automatic desorption device for gas content |
-
2017
- 2017-10-13 CN CN201721317882.XU patent/CN207245690U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296353A (en) * | 2018-09-13 | 2019-02-01 | 中国海洋石油集团有限公司 | A kind of various dimensions experimental provision and its application method for coal bed gas extraction research |
| CN110608022A (en) * | 2019-08-28 | 2019-12-24 | 中联煤层气有限责任公司 | Carbon dioxide landfill method for increasing yield of coal bed gas reservoir |
| CN117665305A (en) * | 2024-02-01 | 2024-03-08 | 山西华新气体能源研究院有限公司 | Automatic desorption device for gas content |
| CN117665305B (en) * | 2024-02-01 | 2024-05-10 | 山西华新气体能源研究院有限公司 | Automatic desorption device for gas content |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220120 Address after: 030024 No. 29 Heping South Road, Wanbailin District, Taiyuan City, Shanxi Province Patentee after: Shanxi gas planning, design and Research Institute Co.,Ltd. Address before: 030032 floor 6, east block, No. 108 Changfeng street, Xiaodian District, Taiyuan City, Shanxi Province Patentee before: SHANXI SHALE GAS Co.,Ltd. |