CN201902207U - Discharge and mining control simulation experiment device for coalbed gas vertical well - Google Patents
Discharge and mining control simulation experiment device for coalbed gas vertical well Download PDFInfo
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- CN201902207U CN201902207U CN2010206799087U CN201020679908U CN201902207U CN 201902207 U CN201902207 U CN 201902207U CN 2010206799087 U CN2010206799087 U CN 2010206799087U CN 201020679908 U CN201020679908 U CN 201020679908U CN 201902207 U CN201902207 U CN 201902207U
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Abstract
The utility model discloses a discharge and mining control simulation experiment device for a coalbed gas vertical well. The device comprises a pressure system, a sample device system and a collecting system, wherein the sample device system comprises a fixer used for fixing a die and a confining pressure pump connected with the fixer; the collecting system comprises an air bag connected with one side of the fixer and a collector connected with the outlet of the air bag; and the other side of the fixer is connected with the pressure system. By virtue of the device, simulation experiments can be conducted on gaseous phase pressurizing condition, the aqueous phase pressurizing condition, the gaseous and aqueous phase pressurizing condition and the like of different fracture widths, different coal structures and different propping agents under different confining pressure states and on the migration law of propping agents under the condition of different differential pressure, and guidance is provided for laying down discharge and mining working systems of the coalbed gas vertical well under the conditions of different discharge and mining stages, different gas yields, different water yields and different fractures, so that commercial developmental process of coalbed gas is greatly propelled in China.
Description
Technical field
The utility model belongs to coal-bed gas exploitation research equipment technical field, and the vertical well array of particularly a kind of coal bed gas is adopted the control analogue experiment installation.
Background technology
Coal bed gas mainly is to compose with adsorbed state to be stored in the coal seam reservoirs, by draining, reduction reservoir pressure, desorb from coal seam reservoirs, output, its output mechanism and conventional gas difference are very big, through the research of basic theory decades, formed the cbm development theory of " draining-step-down-gas desorption-matrix diffusion-fracture seepage " gradually abroad.China is on the basis of using for reference external cbm exploration exploitation advanced experience, on technical method, pass through to improve, formed favorable block method for optimizing system, waterpower sand fracturing technology gradually, intelligence row adopts the technical system of a series of cbm exploration exploitations such as equipment.Coal in China over year surplus in the of 30, oil, relevant departments such as ground ore deposit and the local government mouthful coal bed gas well surplus in the of 4000 of successively having constructed 42 coal-bearing regions, particularly opening the Luan, iron processes, the Fuxin, Fushun, the big city, Shouyang, the Tunliu, the Hancheng, the Wubao, three hand over, three hand over north, peak-to-peak, Anyang, Jiaozhuo, the Fengcheng, areas such as six Pan Shui have been carried out row and have been adopted test, though the coal bed gas well that has has been obtained the breakthrough of well yield, but a lot of coal bed gas well Mining Test are also unsuccessful, trace it to its cause, except that quality factor influences objectively, major part is because development technique, and particularly row adopts that technology mistake causes.
At present, China does not also have ripe coal bed gas output theory and row to adopt control experience, often because subjective error causes test failure, even " death sentence " has been declared in a trial zone.Adopt control theory research by output process and row, crucial effect is arranged improving the coal bed gas well gas production to coal bed gas in China's low pressure, the hypotonic coal seam reservoirs.China's cbm exploration Development Practice shows: the research work of this respect obviously lags behind the cbm exploration evaluation study, is restricting the process of China's coal bed gas commercialized development.Therefore, coal bed gas output mechanism and the research that row adopts control theory are just seemed very necessary.
The utility model content
The purpose of this utility model provide a kind of can study the coal bed gas well array better and adopt the time variation of pressure to the mobile influence that causes of the moving of coal seam reservoirs particle, proppant; The migration Changing Pattern of proppant particles in the time of understanding the coal bed gas well array better and adopt provides the vertical well array of coal bed gas of theoretical direction to adopt the control analogue experiment installation for coal bed gas row adopts working system.
For achieving the above object, the technical solution of the utility model is: the vertical well array of a kind of coal bed gas is adopted the control analogue experiment installation, comprise pressure system, sampling device system and acquisition system, the sampling device system comprises the fixator that is used for fixing mould, the confined pressure pump that links to each other with fixator, acquisition system comprise the air bag that links to each other with fixator one side, with the collector that the air bag exit is connected mutually, the fixator opposite side links to each other with pressure system.
Described pressure system comprises air pressure part and hydraulic pressure part, air pressure partly comprises gas cylinder, valve, air gauge and the flow meter by the pipeline series connection, and hydraulic pressure partly comprises flow meter and the water tank between the air gauge, high-pressure plunger pump and the water pressure gauge that is serially connected in the air pressure part.
Be provided with pressure meter between described flow meter and the fixator.
Be provided with pressure meter between described confined pressure pump and the fixator.
Described collector middle and lower part is provided with filter screen.
Compared with prior art, the beneficial effects of the utility model are: the sampling device system links to each other with acquisition system with pressure system respectively, the utility model can be to different cracks width under different confined pressure states, different coal body structures, different proppants pressurize in gas phase, the water pressurization is gentle, situations such as water two-phase pressurization and different pressure reduction lower support agent migration rule carry out simulated experiment, different rows adopt the stage for the coal bed gas peupendicular hole, different gas production, different aquifer yields provide guidance with the formulation that row under the condition of different cracks adopts working system, have greatly advanced the process of China's coal bed gas commercialized development.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
The vertical well array of coal bed gas is as shown in Figure 1 adopted the control analogue experiment installation, and it comprises pressure system, sampling device system and acquisition system, and the sampling device system links to each other with acquisition system with pressure system respectively.
Pressure system comprises air pressure part and hydraulic pressure part, air pressure partly comprises gas cylinder 1, valve 10, air gauge 31 and the flow meter 5 by the pipeline series connection, hydraulic pressure partly comprises flow meter 5 and the water tank 12 between the air gauge 31, high-pressure plunger pump 13 and the water pressure gauge 32 that is serially connected in successively in the air pressure part, the major function of high-pressure plunger pump 13 is flows of control fluid, for system provides constant compression force and constant flow.
Pressure system can carry out the pressurization of single gas phase or single water, also can gas, the pressurization of water two-phase.Air pressure mainly is the different gas of packing in gas cylinder 1, for example: nitrogen, carbon dioxide, methane and helium, regulate pressure by valve 10.When gas, the pressurization of water two-phase, can be required according to what test, adjust gaseous pressure and water pressure.
The sampling device system comprises the fixator 2 that is used for fixing mould 11, the confined pressure pump 4 that links to each other with fixator 2, is provided with pressure meter 33 between confined pressure pump 4 and the fixator 2.
Acquisition system comprise air bag 6, with the collector 7 that air bag 6 exits are connected mutually, be provided with filter screen 14 in collector 7 middle and lower parts.Acquisition system mainly is that the support dosage when pressure reduction is reached different value is collected, and when only adopting single gas phase to pressurize, can directly weigh by the proppant that air bag is collected; When using gas, water two-phase or the pressurization of single water, then need to dry to the proppant of collecting.
The sampling device system realizes that with being connected by fixator 2 of pressure system and acquisition system fixator 2 one sides link to each other with the pipeline of pressure system, are provided with pressure meter 34 between flow meter on the pipeline 5 and fixator 2; The opposite side of fixator 2 links to each other with the air bag of acquisition system 6.
Core in the sampling device system is the mould 11 in the fixator 2, and the producing device of mould 11 comprises crack manufacturing device 8 and mould disks 9, and the making step of mould 11 is:
The first step, selection mould disks
Welded circular or tabular cylinder one by one on the mould disks 9, the width of cylinder is that the width according to crack width and proppant in the coal seam welds, and its specification mainly contains 0.3mm, 0.45mm, 0.6mm, 0.75mm, 0.8mm, 0.9mm and 1.2mm etc.
Second step, simulation material configuration
The coal of different coal body structures, its intensity difference, simulation material proportioning are also different.According to research, the coal of different coal body structures is chosen different material weight ratios and is made and mix well, and injects the mould disks of different size then, and take out the back at the appointed time.The proportioning and the setting time of various coal body structure coals see Table 1.
The 3rd step, etc. solidify after, the taking-up of the material made, different-grain diameter in the filling, dissimilar proppant therein, the basic parameter of common proppant sees Table 2.
The 4th step, making different size rubber washer
According to the different size crack in the mould disks 9, make the rubber washer of different size, the hole of rubber washer needs corresponding one by one with the crack of mould disks 9.
The 5th the step, the simulation material of the good proppant of filling is put into fixator.
Can connect data presentation system on the utility model, be connected with computer,, carry out control operation to show the confined pressure Pump data by sensor.
Operating procedure of the present utility model is: 1. select mould: select the required mould 11 of experiment; 2. test specimen is adorned mould: the sample oven dry that will test, the mould disks 9 of packing into of accurately weighing; 3. airtight test: charge into helium to system, the tightness of check system; 4. confined pressure is set:, the confined pressure of mould 11 fixators 2 is set by confined pressure pump 4 according to on-the-spot confined pressure needs; 5. float amount pressurization: after installing mould 11, carry out the pressurization of little discharge capacity, see and whether can give vent to anger,, check whether the hole of fixator 2 two ends rubber washers coincide with the crack hole if can not give vent to anger; 6. applied voltage test and data acquisition: pressurization step by step, in time collect pressure and change to support dosage, weigh, gather the various data in the pressure process, and be data file data record; 7. data are handled: according to the various data of collecting, make pressure reduction under the different confined pressures and support that dosage is gentle, the proppant magnitude relation figure of discharge and output; 8. coupling analysis: the relation of pressure reduction under the different confined pressures of coupling analysis, gas, discharge and the support dosage of output, arrange the row who adopts under stage, different aquifer yield, different gas production, the different reservoir pressure condition for difference and adopt working system foundation is provided.
Claims (5)
1. the vertical well array of coal bed gas is adopted the control analogue experiment installation, it is characterized in that, comprise pressure system, sampling device system and acquisition system, the sampling device system comprises the fixator that is used for fixing mould, the confined pressure pump that links to each other with fixator, acquisition system comprise the air bag that links to each other with fixator one side, with the collector that the air bag exit is connected mutually, the fixator opposite side links to each other with pressure system.
2. the vertical well array of coal bed gas as claimed in claim 1 is adopted the control analogue experiment installation, it is characterized in that, described pressure system comprises air pressure part and hydraulic pressure part, air pressure partly comprises gas cylinder, valve, air gauge and the flow meter by the pipeline series connection, and hydraulic pressure partly comprises flow meter and the water tank between the air gauge, high-pressure plunger pump and the water pressure gauge that is serially connected in the air pressure part.
3. the vertical well array of coal bed gas as claimed in claim 2 is adopted the control analogue experiment installation, it is characterized in that, is provided with pressure meter between described flow meter and the fixator.
4. adopt the control analogue experiment installation as claim 1, the vertical well array of 2 or 3 described coal bed gas, it is characterized in that, be provided with pressure meter between described confined pressure pump and the fixator.
5. the vertical well array of coal bed gas as claimed in claim 4 is adopted the control analogue experiment installation, it is characterized in that, described collector middle and lower part is provided with filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206799087U CN201902207U (en) | 2010-12-27 | 2010-12-27 | Discharge and mining control simulation experiment device for coalbed gas vertical well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206799087U CN201902207U (en) | 2010-12-27 | 2010-12-27 | Discharge and mining control simulation experiment device for coalbed gas vertical well |
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| Publication Number | Publication Date |
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| CN201902207U true CN201902207U (en) | 2011-07-20 |
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| CN2010206799087U Expired - Fee Related CN201902207U (en) | 2010-12-27 | 2010-12-27 | Discharge and mining control simulation experiment device for coalbed gas vertical well |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134993A (en) * | 2011-01-22 | 2011-07-27 | 河南理工大学 | Simulation experiment device for controlling production of coal bed methane vertical well |
| CN102865064A (en) * | 2012-10-19 | 2013-01-09 | 河南理工大学 | Gas and water flow condition and effect simulation device of coal bed gas well discharging and mining process |
| CN103048431A (en) * | 2013-01-22 | 2013-04-17 | 河南理工大学 | Hydrofracture propping agent settlement and permeability testing device |
| CN103114851A (en) * | 2013-03-01 | 2013-05-22 | 河南理工大学 | Gas generating contribution capacity testing device of coal seams with different fracture development levels |
| CN103256047A (en) * | 2013-05-17 | 2013-08-21 | 常州大学 | Method for researching variable mass multiphase flowing regular in horizontal well fracturing completion method |
| CN104085076A (en) * | 2014-06-04 | 2014-10-08 | 华南理工大学 | Gas-supply apparatus and gas-supply method for realizing efficient transferring and storage and precise metering of gas in double-stage gas-storage cylinder |
| CN109736787A (en) * | 2018-11-23 | 2019-05-10 | 中联煤层气有限责任公司 | Coal bed gas straight well mining process hydraulic pressure propagation distance analog detection method |
-
2010
- 2010-12-27 CN CN2010206799087U patent/CN201902207U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134993A (en) * | 2011-01-22 | 2011-07-27 | 河南理工大学 | Simulation experiment device for controlling production of coal bed methane vertical well |
| CN102134993B (en) * | 2011-01-22 | 2014-03-05 | 河南理工大学 | Simulation experiment device for controlling production of coal bed methane vertical well |
| CN102865064A (en) * | 2012-10-19 | 2013-01-09 | 河南理工大学 | Gas and water flow condition and effect simulation device of coal bed gas well discharging and mining process |
| CN102865064B (en) * | 2012-10-19 | 2015-03-25 | 河南理工大学 | Gas and water flow condition and effect simulation device of coal bed gas well discharging and mining process |
| CN103048431A (en) * | 2013-01-22 | 2013-04-17 | 河南理工大学 | Hydrofracture propping agent settlement and permeability testing device |
| CN103114851A (en) * | 2013-03-01 | 2013-05-22 | 河南理工大学 | Gas generating contribution capacity testing device of coal seams with different fracture development levels |
| CN103114851B (en) * | 2013-03-01 | 2016-01-20 | 河南理工大学 | Different cranny development coal seams aerogenesis contribution capacity of water testing arrangement |
| CN103256047A (en) * | 2013-05-17 | 2013-08-21 | 常州大学 | Method for researching variable mass multiphase flowing regular in horizontal well fracturing completion method |
| CN104085076A (en) * | 2014-06-04 | 2014-10-08 | 华南理工大学 | Gas-supply apparatus and gas-supply method for realizing efficient transferring and storage and precise metering of gas in double-stage gas-storage cylinder |
| CN109736787A (en) * | 2018-11-23 | 2019-05-10 | 中联煤层气有限责任公司 | Coal bed gas straight well mining process hydraulic pressure propagation distance analog detection method |
| CN109736787B (en) * | 2018-11-23 | 2022-09-30 | 中联煤层气有限责任公司 | Simulation test method for water pressure propagation distance in drainage and production process of coal bed gas vertical well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20141227 |
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| EXPY | Termination of patent right or utility model |