CN206129247U - Annotate test analogue means that CO2 improves shallow layer gas recovery ratio - Google Patents
Annotate test analogue means that CO2 improves shallow layer gas recovery ratio Download PDFInfo
- Publication number
- CN206129247U CN206129247U CN201621154409.XU CN201621154409U CN206129247U CN 206129247 U CN206129247 U CN 206129247U CN 201621154409 U CN201621154409 U CN 201621154409U CN 206129247 U CN206129247 U CN 206129247U
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- gas
- arm
- house steward
- proof box
- pressure
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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
Abstract
The utility model discloses an annotate test analogue means that CO2 improves shallow layer gas recovery ratio, including network access house steward and play net house steward, analog system is arranged in forming the stratum of containing shallow layer gas in the simulation of test analogue means, experimental gas filling pipe system is used for injection testing gas in the network access house steward is to the proof box, effluent gas processing system includes and goes out the total union coupling of net and dispose the solenoid valve and flow sensor's effluent gas branch pipe. The utility model discloses a simulation forms the stratum of containing shallow layer gas in the proof box, and suitable confined pressure is managed in the sample pyrocondensation in keeping the proof box through the steady voltage air pump, required temperature and the pressure of control test as required in the proof box, simulation experiment is carried out in cooperation with the help of experimental gas filling pipe system, effect and the effect of can effectual simulation pouring into carbon dioxide displacement surface layer's shallow layer gas into, it provides valuable reference to be under construction for the project, it appears to avoid appearing the problem that the construction is unreasonable or utilization of resources effect is low.
Description
Technical field
This utility model is related to technical field of the Mineral Engineering using simulation experiment, and in particular to improve to a kind of injecting CO 2
The test simulator of shallow gas recovery ratio.
Background technology
At present, China's coal bed gas resource enriches, but is controlled by the complicated geological conditions of China, reservoir permeability generally compared with
It is low.Shallow gas refer to buried depth than shallower（Typically within 1500m）, the smaller all kinds of natural gas resources of reserves.Mainly
Including biogas, petroliferous gas, the molten gas of coal bed methane gas and water etc..
Shallow gas have the characteristics that：（1）Bury shallow, complex genesis.The topmost feature of shallow gas is exactly to bury shallow, and one
As be distributed from all kinds of stratum of 20m to 1500m below earth's surface, and it is to be with the 3rd to be relatively concentrated in the 4th.Individually
Area is present in the Permian System of anthracitess one, and older stratum is distributed less because being limited by storage cap rock condition.From the point of view of gas source condition,
Existing biogas, there is coal-formed gas, petroliferous gas, Water Soluble Gas, or even also biodegradation gas and low-mature gas etc. again.From the ground of distribution
From the point of view of layer, the 4th is that based on biogas, the 3rd is that based on petroliferous gas, the Permian System coal-bearing strata of anthracitess one is with coal bed gas
It is main.
（2）Reserves are little, and abundance is low.Although shallow gas type is more, distributed more widely, stock number is larger, due to receiving into Tibetan
The restriction of condition, the reserves of single gas reservoir are all little, and the reduction reserves with gas reservoir buried depth are also reduced therewith.From geological conditions
From the point of view of, bury the stratum in 0～150m and do not possess the condition to form big gas reservoir, some little gas bags are can be only formed, but may be flat
Large area spread on face, from tens of thousands of to million cubic metres, only buried depth exceedes the stratum of 500m in raw storage lid to the reserves of single gas reservoir
Condition could form fairly large gas reservoir when more superior.
（3）Type is more, and distribution is wide.As normal gas pools, the type of METHOD OF SHALLOW GAS RESERVOIRS is also diversified, except tectosphere
Hold one's breath outside Tibetan, also the gas reservoir of the various complicated types such as fault barrier trap gas reservoir, depositional trap gas reservoir, water soluble gas reservoir.With
Unlike normal gas pools, the distribution of METHOD OF SHALLOW GAS RESERVOIRS is not controlled by oil-gas bearing area, only related to gas source condition.Because China has
Numerous Mesozoic ＆ Cenozoic sediment basins, shallow-layer source of the gas is extensive, therefore, the distribution of METHOD OF SHALLOW GAS RESERVOIRS is also very extensive.This is shallow-layer
The exploration and development of gas provides wide prospect.
Therefore, when shallow gas exploitation is carried out, the mode to exploiting is needed to be simulated experiment.At present for Shallow Gas Wells
Made using physical modeling's test specimen of carbon dioxide displacement shallow gas and achieve many achievements, but its manufacture method is also present very
It is more not enough, it is impossible to accurately reflect original gas-bearing formation condition.Accordingly, it would be desirable to design the more rational shallow gas dioxy of such a
Change the analogy method of carbon displacement, in order to analog result closer to practical situation.
Utility model content
The purpose of this utility model is to provide the test simulator that a kind of injecting CO 2 improves shallow gas recovery ratio.
It is, up to above-mentioned purpose, a kind of injecting CO 2 to be provided in one embodiment of the present utility model and improves shallow gas recovery ratio
Test simulator, it is characterised in that include：
It is configured with the network access house steward of electromagnetic valve and goes out to net house steward；
Analog systemss, for the simulation in test simulator the stratum containing shallow gas is formed；Analog systemss include band
There is temperature control system and high voltage bearing proof box and the sample heat-shrink tube in proof box；Pressure peace is configured with proof box
Full valve and the entrance house steward being connected with sample heat-shrink tube two ends respectively and blow-down pipe；It is provided with house steward and enters header valve
Door, is provided with atmospheric valve on blow-down pipe；Network access house steward is accessed by the first arm into house steward, and is configured with the first arm
Electromagnetic valve and pressure transducer；Blow-down pipe accesses out net house steward by being vented arm, and is configured with electromagnetic valve on emptying arm
And pressure transducer；Emptying arm also accesses vacuum pump by a lateral canal, and on the side pipe electromagnetic valve is also configured with；Emptying arm
On be also configured with gas chromatograph；
Temperature sensor and pressure transducer are provided with proof box, on house steward flow transducer is configured with；Simulation
System configuration has voltage stabilizing air pump, and the port of voltage stabilizing air pump connects the confined pressure for maintaining sample heat-shrink tube with proof box；
Test gas injected system, for through network access house steward to injection testing gas in the sample heat-shrink tube of proof box；Examination
Testing gas injected system includes being configured with the CO 2 high pressure gas cylinder of carbon dioxide arm, being configured with the nitrogen high pressure of nitrogen arm
Gas cylinder and the methane gas cylinder for being configured with methane arm；Carbon dioxide arm, nitrogen arm and methane arm are each equipped with gas
Pressure supercharger and electromagnetic valve, and access network access house steward；
Discharge gas processing system, including with the discharge gas for going out to net house steward and be connected and be configured with electromagnetic valve and flow transducer
Pipe, discharge gas branch pipe is sequentially ingressed into absorption unit of dioxide carbon and methane processing meanss.
As one of prioritization scheme of the present utility model, also including management system, management system include it is integrated in the controlling
The central processing unit of the heart, display, input equipment and alarm；Central processing unit is passed with electromagnetic valve, pressure transducer, temperature
Sensor, voltage stabilizing air pump, gas-booster communicate to connect and control its working condition.
As one of prioritization scheme of the present utility model, configure on carbon dioxide arm, nitrogen arm and methane arm
There is air gauge.
Used as one of prioritization scheme of the present utility model, air pressure supercharger accesses carbon dioxide by a three-way valve
Pipe, nitrogen arm and methane arm.
Used as one of prioritization scheme of the present utility model, absorption unit of dioxide carbon includes at least two-stage lye tank, discharge
Gas branch pipe expellant gas sequentially enter two-stage lye tank.
As one of prioritization scheme of the present utility model, go out to net house steward and be connected with discharge gas branch pipe by flange.
In sum, this utility model has advantages below：
This utility model forms the stratum containing shallow gas by the simulation in proof box, and keeps trying by voltage stabilizing air pump
The suitable confined pressure of sample heat-shrink tube in tryoff, temperature and pressure that can as needed needed for Control experiment in proof box, by
The cooperation of test gas injected system being simulated experiment, can effectively simulated injection carbon dioxide flooding it is alternately shallow in top layer
The effect of layer gas and effect, provide valuable reference, it is to avoid unreasonable construction or the utilization of resources occur for project construction
The low problem of effect occurs.
Device of the present utility model is easy to analog result closer to practical situation, is the efficient profit deeper into research coal bed gas
With offer support.
Description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Wherein, 1, network access house steward；2nd, go out to net house steward；3rd, proof box；4th, house steward is entered；5th, blow-down pipe；6th, pop off valve；
7th, house steward's valve；8th, the first arm；9th, pressure transducer；10th, side pipe；11st, vacuum pump；12nd, voltage stabilizing air pump；13rd, carbon dioxide
Gas cylinder；14th, nitrogen gas cylinder；15th, methane gas cylinder；16th, carbon dioxide arm；17th, nitrogen arm；18th, methane
Arm；19th, air pressure supercharger；20th, sample heat-shrink tube；21st, gas chromatograph；22nd, absorption unit of dioxide carbon；23rd, at methane
Reason device；24th, gas branch pipe is discharged.
Specific embodiment
This utility model provides the test simulator that a kind of injecting CO 2 improves shallow gas recovery ratio, including being configured with electricity
The network access house steward 1 of magnet valve and go out to net house steward 2.Network access house steward 1 and go out to net house steward 2 be this device each system be connected with each other it is main
Pipeline, the electromagnetic valve for configuring thereon can be used for closing respective line when needing.
Analog systemss are used for the simulation in test simulator and form the stratum containing shallow gas.Analog systemss include carrying
Temperature control system and high voltage bearing proof box 3 and the sample heat-shrink tube 20 in proof box 3.Pressure is configured with proof box
Relief valve 6 and the entrance house steward 4 being connected with sample heat-shrink tube two ends respectively and blow-down pipe 5, on house steward 4 entrance is provided with
House steward's valve 7.Proof box carries temperature control equipment, can control the temperature of inside, it is possible to bear larger pressure.
Atmospheric valve is installed, atmospheric valve is used to nitrogen air-out is passed through before experiment or in other needs on blow-down pipe
Exclude proof box internal gas or reduce being used during air pressure.The pressure that pop off valve is used in monitoring test case, it is to avoid because
Operational error causes pressure not normal.Gas chromatograph 21 is also configured with emptying arm, can be with monitor in real time sample heat-shrink tube
Expellant gas composition.
Network access house steward is accessed by the first arm 8 into house steward, and electromagnetic valve and pressure biography are configured with the first arm 8
Sensor 9.Blow-down pipe 5 accesses out net house steward 2 by being vented arm, and is configured with electromagnetic valve and pressure sensing on emptying arm
Device.Emptying arm also accesses vacuum pump 11 by a lateral canal 10, and on the side pipe electromagnetic valve is also configured with.
Temperature sensor and pressure transducer are provided with proof box, on house steward flow transducer is configured with；Simulation
System configuration has voltage stabilizing air pump 12, and the port of voltage stabilizing air pump connects the confined pressure for maintaining sample heat-shrink tube 20 with proof box.Voltage stabilizing gas
Pump can be passed through gases at high pressure into proof box so as to be internally formed high pressure, and then cause the environment of proof box inside rammell
Be consistent in ground end.
Test gas injected system is used for through network access house steward to injection testing gas in proof box.Test gas injected system bag
Include the CO 2 high pressure gas cylinder 13 for being configured with carbon dioxide arm 16, the and of nitrogen gas cylinder 14 for being configured with nitrogen arm 17
It is configured with the methane gas cylinder 15 of methane arm 18.Carbon dioxide arm, nitrogen arm and methane arm are each equipped with air pressure
Supercharger 19 and electromagnetic valve, and access network access house steward.Therefore, when needing to be passed through certain test gas, other examinations can be closed
The electromagnetic valve tested on gas service pipe, allows desired gas to be pressurized or be directly entered in proof box in the case of unpressurized.Proof box
Inside it is pre-placed the similar ground of ground end rock texture.
Discharge gas processing system includes and the discharge gas for going out to net house steward and be connected and be configured with electromagnetic valve and flow transducer
Pipe 24, preferably is gone out to net house steward and is connected with discharge gas branch pipe by flange.Discharge gas branch pipe is sequentially ingressed into absorption unit of dioxide carbon
22 and methane processing meanss 23.Discharge gas processing system is mainly for the treatment of the greenhouse gases for giving off, it is to avoid environment is produced
Adverse effect.
This utility model also includes management system, and management system includes being integrated in the central processing unit of control centre, shows
Device, input equipment and alarm.Central processing unit and electromagnetic valve, pressure transducer, temperature sensor, voltage stabilizing air pump, gas
Supercharger communicates to connect and controls its working condition.
In one of optimal enforcement example of the present utility model, air pressure supercharger accesses carbon dioxide by a three-way valve
Arm, nitrogen arm and methane arm.Air gauge is each equipped with carbon dioxide arm, nitrogen arm and methane arm, can be with
At any time it was observed that the pressure in air-pot.
In one of optimal enforcement example of the present utility model, absorption unit of dioxide carbon includes at least two-stage lye tank,
Discharge gas branch pipe expellant gas sequentially enter two-stage lye tank.
The step of carrying out experiment test using this utility model is as follows：
First, air-leakage test：
Air-leakage test purpose is the tightness for ensureing whole system, and then improves the accuracy of experimental data.Specifically
Experimental procedure is as follows：(1) device is connected nitrogen gas cylinder with network access house steward according to coupling together shown in figure l；(2) will
Laboratory sample loads in proof box, then that proof box is closed, it is ensured that confined pressure steady；(3) by electromagnetic valve related in experiment or
Person's other types valve is closed, while opening nitrogen gas cylinder, makes injection pressure reach lMPa；(4) after between one section of injection is drawn, close
Nitrogen gas cylinder is closed, makes whole device system steady
Fixed a period of time, the change of pressure monitor system is observed, if not changing, system air-tightness is illustrated preferably, if pressure
Reduce, illustrate that system air-tightness is poor, needs are further detected；(5) atmospheric valve is opened, opens vacuum pump and release gas
Bleed off.
2nd, dispersion coal bed gas in methane analog sample is injected：
Corresponding valve is closed, methane gas cylinder is opened and is injected a certain amount of methane into the sample heat-shrink tube of proof box
Gas, makes methane gas be stored in rock-soil layer medium in sample heat-shrink tube already filled with sample before injection, then stands
After a period of time, methane gas is in free state, in being distributed in the hole of sample；And detection sample heat-shrink tube and proof box
Pressure value, is maintained in the design pressure of experiment by voltage stabilizing air pump by confined pressure, while adjusting temperature controller so that proof box
Interior temperature also reaches temperature required.Make the pressure in heat-shrink tube by the injection pressure and injection rate of regulation methane gas simultaneously
Reach the pressure needed for experiment and keep constant；When the pressure of proof box no longer changes, injection process terminates.
3rd, carbon dioxide displacement methane simulation process：
After methane gas disperses to form analog systemss in rock-soil layer dielectric sample surface and hole, titanium dioxide is injected
Carbon, by methane, displacement out, then by stable displacement process, realizes the complete displacement methane mistake of carbon dioxide from porous media
Journey.Specific experiment process is as follows：Empty the gas in discharge gas processing system；Open the valve of CO 2 high pressure gas cylinder, note
Enter pressure remained steady；The change of component of output gas is detected with gas chromatograph, the control software for starting management system is automatic
The related datas such as collecting work time, pressure, temperature；When the analysis result of gas chromatograph reaches the numerical value of experimental design,
Close CO 2 high pressure gas cylinder.
4th, gas processing system is discharged
By discharging gas processing system, the displacement amount of carbon dioxide discharge and methane gas is measured, meanwhile, by note
Enter the total amount that piezometer calculates injecting carbon dioxide.CO 2 high pressure gas cylinder is opened makes its injection pressure remained steady, drives
For several hours.After flowing out without methane, CO 2 high pressure gas cylinder is closed.By calculating later stage displacement carbon dioxide
Total injection, and the amount of the carbon dioxide collected and methane；Calculate the usage amount of carbon dioxide in displacement process.
5th, pilot system cleaning
After off-test, vacuum pump is opened and into the valve on house steward, simultaneously close off out net house steward and injected system
On valve, the gas in sample heat-shrink tube is slowly released；Meanwhile, the pressure allowed in proof box that opens the safety-valve slowly is released
Put.Gas circuit connection is finally released, cool taking-up sample.
Although being described in detail to specific embodiment of the present utility model with reference to accompanying drawing, it is right to should not be construed as
The restriction of the protection domain of this patent.In the scope described by claims, those skilled in the art are without creative labor
The dynamic various modifications that can be made and deformation still belong to the protection domain of this patent.
Claims (6)
1. a kind of injecting CO 2 improves the test simulator of shallow gas recovery ratio, it is characterised in that include：
It is configured with the network access house steward of electromagnetic valve and goes out to net house steward；
Analog systemss, for the simulation in test simulator the stratum containing shallow gas is formed；The analog systemss include band
There is temperature control system and high voltage bearing proof box and the sample heat-shrink tube in proof box；Pressure peace is configured with proof box
Full valve and the entrance house steward being connected with sample heat-shrink tube two ends respectively and blow-down pipe；It is provided with the entrance house steward into always
Tube valve, is provided with atmospheric valve on blow-down pipe；The entrance house steward accesses network access house steward by the first arm, and in the first arm
On be configured with electromagnetic valve and pressure transducer；The blow-down pipe accesses out net house steward by being vented arm, and on emptying arm
It is configured with electromagnetic valve and pressure transducer；The emptying arm also accesses vacuum pump by a lateral canal, also configures on the side pipe
There is electromagnetic valve；Gas chromatograph is also configured with the emptying arm；
Temperature sensor and pressure transducer are provided with the proof box, on house steward flow transducer is configured with；It is described
Analog systemss are configured with voltage stabilizing air pump, and the port of voltage stabilizing air pump connects the confined pressure for maintaining sample heat-shrink tube with proof box；
Test gas injected system, for through network access house steward to injection testing gas in the sample heat-shrink tube of proof box；The examination
Testing gas injected system includes being configured with the CO 2 high pressure gas cylinder of carbon dioxide arm, being configured with the nitrogen high pressure of nitrogen arm
Gas cylinder and the methane gas cylinder for being configured with methane arm；The carbon dioxide arm, nitrogen arm and methane arm are configured
There are air pressure supercharger and electromagnetic valve, and access network access house steward；
Discharge gas processing system, including with the discharge gas branch pipe for going out to net house steward and be connected and be configured with electromagnetic valve and flow transducer,
Discharge gas branch pipe is sequentially ingressed into absorption unit of dioxide carbon and methane processing meanss.
2. test simulator as claimed in claim 1, it is characterised in that：Also include management system, the management system bag
Include central processing unit, display, input equipment and the alarm for being integrated in control centre；The central processing unit and electromagnetism
Valve, pressure transducer, temperature sensor, voltage stabilizing air pump, gas-booster communicate to connect and control its working condition.
3. test simulator as claimed in claim 1, it is characterised in that：The carbon dioxide arm, nitrogen arm and first
Air gauge is each equipped with alkane arm.
4. test simulator as claimed in claim 1, it is characterised in that：The air pressure supercharger is connect by a three-way valve
Enter carbon dioxide arm, nitrogen arm and methane arm.
5. test simulator as claimed in claim 1, it is characterised in that：The absorption unit of dioxide carbon includes at least two
Level lye tank, discharge gas branch pipe expellant gas sequentially enter two-stage lye tank.
6. test simulator as claimed in claim 1, it is characterised in that：It is described to go out to net house steward by flange and discharge gas
Pipe connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621154409.XU CN206129247U (en) | 2016-10-31 | 2016-10-31 | Annotate test analogue means that CO2 improves shallow layer gas recovery ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621154409.XU CN206129247U (en) | 2016-10-31 | 2016-10-31 | Annotate test analogue means that CO2 improves shallow layer gas recovery ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206129247U true CN206129247U (en) | 2017-04-26 |
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ID=58574783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621154409.XU Expired - Fee Related CN206129247U (en) | 2016-10-31 | 2016-10-31 | Annotate test analogue means that CO2 improves shallow layer gas recovery ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206129247U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751021A (en) * | 2019-02-26 | 2019-05-14 | 洛阳理工学院 | A kind of simulator and analogy method for strengthening cbm development for gas injection |
| CN110847867A (en) * | 2019-12-12 | 2020-02-28 | 西南石油大学 | Gas injection displacement injection point selection method for tight oil reservoir |
-
2016
- 2016-10-31 CN CN201621154409.XU patent/CN206129247U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751021A (en) * | 2019-02-26 | 2019-05-14 | 洛阳理工学院 | A kind of simulator and analogy method for strengthening cbm development for gas injection |
| CN110847867A (en) * | 2019-12-12 | 2020-02-28 | 西南石油大学 | Gas injection displacement injection point selection method for tight oil reservoir |
| CN110847867B (en) * | 2019-12-12 | 2020-08-25 | 西南石油大学 | Gas injection displacement injection point selection method for tight oil reservoir |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20170426 Termination date: 20171031 |