CN102134993B - Simulation experiment device for controlling production of coal bed methane vertical well - Google Patents
Simulation experiment device for controlling production of coal bed methane vertical well Download PDFInfo
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- CN102134993B CN102134993B CN201110024295.2A CN201110024295A CN102134993B CN 102134993 B CN102134993 B CN 102134993B CN 201110024295 A CN201110024295 A CN 201110024295A CN 102134993 B CN102134993 B CN 102134993B
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Abstract
The invention relates to a simulation experiment device for controlling the production of coal bed methane vertical well. The simulation experiment device comprises a fixer for fixing a simulation coal body, wherein two ends of the fixer are respectively provided with an opening, the middle of the fixer is provided with a cavity which is communicated with the two openings at the two ends, the cavity is used for fixedly arranging the simulation coal body, one end of the fixer is connected with a pressure air source and/or a pressure water source which is communicated with the cavity of the fixer by a first pressure gage, and the other end of the fixer is provided with a propping agent collecting device which is communicated with the cavity of the fixer. By arranging the simulation coal body in the cavity of the fixer, and by performing the simulation experiment to the migration regularity of the propping agent with different fracture degrees, different coal body structures and different types under the conditions of gas phase pressurization, water phase pressurization, gas/water phase pressurization and the like, the device can obtain the migration condition of the propping agent, the coal powder and the like of the coal bed methane vertical well under different production stages, different gas production rates, different water production rates and different fracture conditions, and can offer the guidance to formulate the production working system in the practical production process.
Description
Technical field
The present invention relates to a kind of simulation experiment device for controlling production of coal bed methane vertical well of simulating production of coal bed methane vertical well situation.
Background technology
Coal bed gas is to take adsorbed state to exist in coal seam reservoirs as main tax, its output mechanism and conventional gas difference are very large, the external research through basic theory decades, the cbm development that has formed gradually " draining-step-down-gas desorption-matrix diffusion-fracture seepage " is theoretical.China, on foreign CBM exploration and development advanced experience basis, by improving, has formed gradually favorable block method for optimizing system, waterpower Sand Fracturing Technology, the technical system of a series of CBM exploration and developments such as intelligent mining equipment on technical method.Coal in China over more than 30 years, oil, the relevant departments such as ground ore deposit and local government more than the 4000 mouthfuls of coal bed gas wells of successively having constructed 42 coal-bearing regions, particularly opening Luan, iron processes, Fuxin, Fushun, big city, Shouyang, Tunliu, Hancheng, Wubao, three hand over, three hand over north, peak-to-peak, Anyang, Jiaozhuo, Fengcheng, mining experiment has also been carried out in the areas such as six Pan Shui, although some wells have been obtained the breakthrough of well yield, but a lot of coal bed gas well extracting experiments are also unsuccessful, trace it to its cause, except quality factor affects objectively, major part is due to development technique, particularly mining technology mistake causes.China does not also have ripe coal bed gas product theory and mining to control experience at present, often, because subjective error causes the failure of an experiment, even " death sentence " has been sentenced in a test block.Therefore, the research of coal bed gas product mechanism and mining control theory is just seemed to very necessary.
Coal bed gas is by draining, reduces reservoir pressure, thus desorb from coal seam reservoirs, output.By output process and the mining control theory of coal bed gas in China's low pressure, hypotonic coal seam reservoirs are studied, to improving coal bed gas well production capacity, there is very important effect.China's CBM exploration and development practice shows: the research work of this respect obviously lags behind cbm exploration evaluation study, is restricting the process of China's coal bed gas commercialized development.
Summary of the invention
The object of the present invention is to provide a kind of simulation experiment device for controlling production of coal bed methane vertical well, to solve China now, output process and the mining control theory of coal bed gas in low pressure, hypotonic coal seam reservoirs are studied to the problem that lags behind cbm exploration evaluation study.
For achieving the above object, the present invention adopts following technical scheme: a kind of simulation experiment device for controlling production of coal bed methane vertical well, this analogue experiment installation comprises the fixator of fixed-analog coal body, the two ends of fixator have opening, centre has the cavity with the open communication at two ends, this cavity is used for being fixedly installed simulation coal body, one end of fixator by the first pressure meter be connected be communicated with the cavity of fixator have pressurized air source and/or a pressure water source, the other end of fixator is provided with the proppant gathering-device being communicated with the cavity of fixator.
The perisporium of described fixator is provided with the confined pressure interface being communicated with the cavity of fixator, and confined pressure interface is communicated with confined pressure source of the gas by the second pressure meter.
Described have the exit of pressurized air source to be provided with gas flowmeter, and the exit in pressure water source is provided with fluid flowmeter.
Between the described outlet that has a pressurized air source and gas flowmeter, be provided with flow control valve.
The described pressurized air source that has is the gas cylinder that is filled with gas, and described pressure water source comprises topping-up pump and water tank.
In described gas cylinder, filling the gas of establishing is high pressure nitrogen or helium or methane gas or carbon dioxide gas.
Described proppant gathering-device comprises collection air bag, collecting one end of air bag and the cavity of fixator is communicated with, the other end of collecting air bag is connected with the import of a collecting box, on the wall of collecting box, has fluid issuing, is provided with the filter screen of interception proppant on fluid issuing.
In use, the cavity of fixator of the present invention is for fixed-analog coal body, simulation coal body is the produced a kind of simulation material in simulate formation coal seam, the inside of simulation coal body has the duct, crack that is extended to the other end by one end, manufacture in crack when duct, crack is the actual exploitation of simulation in coal seam, in duct, crack, fill out and be provided with granular proppant, the character of proppant and to fill out the degree of compacting of establishing in duct, crack are all the settings of proppant in simulating reality coal seam, the proppant that reality is used generally has quartz sand, haydite, glass marble or walnut shell etc.When experiment, pressure water source and/or have the crack hole link of cavity that pressurized air source passes through fixator and simulation coal body, open pressure water source and/or have pressurized air source, in duct, crack, be injected with setting-out and/or the body of calming the anger, and regulate pressure water and/or have the pressure of the body of calming the anger, by proppant by pouring in duct, crack in proppant gathering-device, by to thering is different Fracture Widths, different Coal Pore Structures, different proppants pressurize in gas phase, water pressurization is gentle, thereby in the situations such as water two-phase pressurization, proppant migration rule is carried out to simulated experiment and show that coal bed gas peupendicular hole is in the different mining stage, different gas production, different aquifer yields, proppant under the condition of different cracks, the transport conditions of coal dust etc., for the formulation of mining working system in actual production process provides guidance.
When experiment, between the perisporium of simulation coal body of the present invention and the cavity wall of fixator, there is confined pressure gap, the confined pressure interface arranging on the perisporium of fixator is communicated with confined pressure gap, confined pressure interface is communicated with confined pressure source of the gas by the second pressure meter, by regulating the pressure of confined pressure source of the gas, can simulated experiment more be geared to actual circumstances for simulation coal body provides the confined pressure gearing to actual circumstances, make experimental data have more directive significance.
Proppant gathering-device comprises collection air bag, collecting one end of air bag and the cavity of fixator is communicated with, the other end of collecting air bag is connected with the import of a collecting box, on the wall of collecting box, there is fluid issuing, on fluid issuing, be provided with the filter screen of interception proppant, by filter screen, gas and/or water can be discharged, proppant is stayed, to measure the output of proppant.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention.
The specific embodiment
A kind of embodiment of simulation experiment device for controlling production of coal bed methane vertical well, in Fig. 1, this analogue experiment installation comprises fixator 2, the two ends of fixator 2 have two openings, the centre of fixator 2 has the cavity with the open communication at two ends, in the cavity of fixator 2, be equiped with simulation coal body 11, simulation coal body 11 is identical with natural coal body or extremely close with quality, the intensity of natural coal body.Simulation coal body 11 filters powder and water combination by alumina cement and portland cement and electricity and solidifies and form, according to the difference of the kind of simulated coal body, alumina cement and portland cement and electricity filter the ratio of powder and water and can elect as: 1:2:25:11 or 1:2:40:16.4 or 1:2:60:24.The centre of simulation coal body 11 has the duct, crack that is extended to the other end by one end, in duct, crack, fill out and be provided with granular proppant, the proppant is here the structure of the graininess sandstone with having in the crack of coal body in the natural colliery material identical or close with character, this proppant has several as follows: quartz sand, haydite, glass marble and walnut shell, wherein the particle diameter of quartz sand is generally elected 16 ~ 80 orders as, the particle diameter of haydite is generally elected 12 ~ 100 orders as, the particle diameter of glass marble is generally elected 12 ~ 100 orders as, the particle diameter of walnut shell is generally elected 16 ~ 80 orders as, the kind of proppant and the selection of particle diameter are to choose according to the character of the proppant of filling in the crack of the type of coal body and real coal body.One end of fixator 2 is connected with that first outlet of pressure meter 3, the first pressure meters 3 and the cavity of fixator 2 are communicated with and the cavity that passes through fixator is connected with the duct, crack of simulation coal body 11.The import of the first pressure meter 3 is divided into two-way, and the gas flowmeter 5 of leading up to is connected with gas cylinder 1 with flow control valve 10, is provided with the 4th pressure meter 9 between gas flowmeter 5 and flow control valve 10.The fluid flowmeter 8 of separately leading up to is communicated with the outlet of topping-up pump 13, is provided with the 3rd pressure meter 16 between fluid flowmeter 8 and topping-up pump 13.The import of topping-up pump 13 is communicated with water tank 12.The other end of fixator 2 is connected with a port of air bag 6, and this port of air bag 6 is communicated with the cavity of fixator 2 and the cavity that passes through fixator is connected with the duct, crack of simulation coal body 11.The other end of air bag 6 is connected with the import of collecting box 7, and collecting box 7 also has fluid issuing, is provided with filter screen 14 on fluid issuing, and filter screen 14, for liquids and gases are emitted, stops proppant, realizes the object of collecting proppant.
As the improvement of above technical scheme, the perisporium of fixator 2 is provided with confined pressure interface, and the inner chamber of confined pressure interface anchor 2 is communicated with.Confined pressure interface is connected with confined pressure pump 4 by the second pressure meter 15.In the time of in use, the two ends of fixator 2 are provided with capping, the two ends of simulation coal body 11 coordinate with the capping that fixator two ends arrange respectively, between the simulation outer peripheral face of coal body 11 and the inner peripheral surface of fixator, there is confined pressure gap, between two end faces of fixed-analog coal body 11 and capping, be provided with sealing mat, two sealing mats are by confined pressure clearance seal.On sealing mat and capping, be provided with the through hole with crack channel connection.Gas cylinder 1 is with topping-up pump 13 by sealing mat and the through hole on capping and the crack channel connection of fixator one end, and air bag 6 is by through hole and crack hole link on fixator other end sealing mat and capping.Confined pressure pump by confined pressure interface to confined pressure gap in pass into gases at high pressure, form confined pressure.
In gas cylinder 1, filling the gas of establishing is high pressure nitrogen or helium or methane gas or carbon dioxide gas.
Confined pressure source of the gas confined pressure pump in the present embodiment can be also gas cylinder.
Embodiment when the present embodiment is experiment is therefore provided with simulation coal body in the cavity of fixator.
In real recovery process, coal bed fracturing need to be gone out to crack, then in crack, fill out proppant, and then carry out the exploitation of coal bed gas, in recovery process, proppant can not be gone out, therefore need simulation mining process, the movement law of research proppant.Utilize experimental system for simulating in the present embodiment can well simulate the migration rule of proppant, can show that the migration of proppant is relevant with which factor, for reality exploitation provides theoretical foundation.
Claims (7)
1. a simulation experiment device for controlling production of coal bed methane vertical well, this analogue experiment installation comprises the fixator of fixed-analog coal body, it is characterized in that: the two ends of fixator have opening, centre has the cavity with the open communication at two ends, this cavity is used for being fixedly installed simulation coal body, the inside of simulation coal body has the duct, crack that is extended to the other end by one end, duct, crack is communicated with the cavity of fixator, in duct, crack, fill out and be provided with granular proppant, one end of fixator by the first pressure meter be connected be communicated with the cavity of fixator have pressurized air source and/or a pressure water source, the other end of fixator is provided with the proppant gathering-device being communicated with the cavity of fixator.
2. simulation experiment device for controlling production of coal bed methane vertical well according to claim 1, is characterized in that: the perisporium of described fixator is provided with the confined pressure interface being communicated with the cavity of fixator, and confined pressure interface is communicated with confined pressure source of the gas by the second pressure meter.
3. simulation experiment device for controlling production of coal bed methane vertical well according to claim 1 and 2, is characterized in that: described in have the exit of pressurized air source to be provided with gas flowmeter, the exit in pressure water source is provided with fluid flowmeter.
4. simulation experiment device for controlling production of coal bed methane vertical well according to claim 3, is characterized in that: described in have between the outlet of pressurized air source and gas flowmeter and be provided with flow control valve.
5. simulation experiment device for controlling production of coal bed methane vertical well according to claim 4, is characterized in that: the described pressurized air source that has is the gas cylinder that is filled with gas, and described pressure water source comprises topping-up pump and water tank.
6. simulation experiment device for controlling production of coal bed methane vertical well according to claim 5, is characterized in that: in described gas cylinder, filling the gas of establishing is high pressure nitrogen or helium or methane gas or carbon dioxide gas.
7. simulation experiment device for controlling production of coal bed methane vertical well according to claim 1, it is characterized in that: described proppant gathering-device comprises collection air bag, collecting one end of air bag and the cavity of fixator is communicated with, the other end of collecting air bag is connected with the import of a collecting box, on the wall of collecting box, there is fluid issuing, on fluid issuing, be provided with the filter screen of interception proppant.
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Families Citing this family (11)
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| CN102635390B (en) * | 2012-04-23 | 2013-12-18 | 河南理工大学 | Method, device and simulation experiment system for simulating gas pressure propagation during process of drainage production of coal-bed gas well |
| CN102830630B (en) * | 2012-09-29 | 2016-01-20 | 河南理工大学 | Coal seam gas branch well mining control simulation device |
| CN103089240B (en) * | 2012-12-06 | 2015-07-29 | 中国石油大学(北京) | Coal dust migration rule visual experimental apparatus and method thereof in crack |
| CN103015975B (en) * | 2012-12-31 | 2015-06-24 | 河南理工大学 | Gas production rate testing simulation device of coal-bed gas vertical well |
| CN103256045B (en) * | 2013-02-21 | 2016-03-16 | 西南石油大学 | The generation of coalbed methane reservoir coal dust, migration, sedimentation, blocking dynamic evaluation instrument |
| 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 |
| CN103643920B (en) * | 2013-12-04 | 2016-04-06 | 北京源海威科技有限公司 | The method of Unconventional forage exploitation visual Simulation device and simulation mining thereof |
| CN105735966B (en) * | 2016-04-07 | 2018-08-17 | 中国地质大学（武汉） | Coal bed gas well pit shaft internal drainage gas production coal dust transported simulation device and analogy method |
| CN108316916B (en) * | 2018-01-15 | 2021-03-26 | 河南理工大学 | Discharge and production pressure drop control simulation test method under different coal reservoir conditions |
| CN109611089B (en) * | 2019-01-08 | 2023-08-18 | 中国石油集团川庆钻探工程有限公司 | Method for testing damage of coal dust precipitation to support cracks after coal bed gas well pressure |
| CN110186812A (en) * | 2019-05-09 | 2019-08-30 | 西南石油大学 | The dynamic characteristic test macro and test method of pulverized coal group under a kind of reservoir conditions |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5058425A (en) * | 1991-01-03 | 1991-10-22 | Texaco Inc. | Earthen core analyzing means and method for determining the methane storage capacity of the core |
| CN201037402Y (en) * | 2007-03-06 | 2008-03-19 | 中国矿业大学 | Goaf decompression coal bed gas extracting simulation experiment device |
| CN201574751U (en) * | 2009-09-28 | 2010-09-08 | 中国地质大学（武汉） | Testing device for simulating drilling and grouting in coal seam and evaluating stability of hole wall |
| CN101845949A (en) * | 2010-04-28 | 2010-09-29 | 中国科学院力学研究所 | Indoor simulation device for testing injection/pressure fall of coal bed methane |
| CN201902207U (en) * | 2010-12-27 | 2011-07-20 | 河南理工大学 | Discharge and mining control simulation experiment device for coalbed gas vertical well |
-
2011
- 2011-01-22 CN CN201110024295.2A patent/CN102134993B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5058425A (en) * | 1991-01-03 | 1991-10-22 | Texaco Inc. | Earthen core analyzing means and method for determining the methane storage capacity of the core |
| CN201037402Y (en) * | 2007-03-06 | 2008-03-19 | 中国矿业大学 | Goaf decompression coal bed gas extracting simulation experiment device |
| CN201574751U (en) * | 2009-09-28 | 2010-09-08 | 中国地质大学（武汉） | Testing device for simulating drilling and grouting in coal seam and evaluating stability of hole wall |
| CN101845949A (en) * | 2010-04-28 | 2010-09-29 | 中国科学院力学研究所 | Indoor simulation device for testing injection/pressure fall of coal bed methane |
| CN201902207U (en) * | 2010-12-27 | 2011-07-20 | 河南理工大学 | Discharge and mining control simulation experiment device for coalbed gas vertical well |
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Inventor after: Ni Xiaoming Inventor after: Wang Yanbin Inventor after: Shen Yi Inventor after: Lin Haixiao Inventor after: Song Jinxing Inventor after: Su Xianbo Inventor after: Zhu Mingyang Inventor after: Jia Bing Inventor before: Ni Xiaoming Inventor before: Wang Yanbin Inventor before: Shen Yi Inventor before: Su Xianbo Inventor before: Zhu Mingyang Inventor before: Jia Bing |
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Free format text: CORRECT: INVENTOR; FROM: NI XIAOMING WANG YANBIN SHEN YI SU XIANBO ZHU MINGYANG JIA BING TO: NI XIAOMING WANG YANBIN SHEN YI LIN HAIXIAO SONG JINXING SU XIANBO ZHU MINGYANG JIA BING |
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