A kind of gas hydrates chemical flooding photoetching glass model microcosmos experiment deviceTechnical field
The invention discloses a kind of gas hydrates chemical flooding photoetching glass model microcosmos experiment device, it is related to natural gasHydrate development field.
Background technology
Gas hydrates (natural gas hydrate, abbreviation NGH) are natural gases under certain low temperature, high pressureThe non-stoichiometry cage compound formed with water, also referred to as " combustible ice ".1m3Gas hydrates can contain 164m3Methane gasAnd 0.8m3Water." combustible ice " is the product of growing nonparasitically upon another plant of natural gas, and application is roughly the same with natural gas, is a kind of typicalOil substitutes." combustible ice " easily burns, under equal conditions, energy ratio coal caused by " combustible ice " burning, oil, naturalGas will be higher by decades of times, be described as " belonging to the super energy that end is come ".
The flammable ice reserves very abundant in China, according to investigation, the gas hydrates in China are mainly distributed on southMarine site, Area of The East China Sea, Qinghai-Tibet tundra and northeast tundra.
Exploitation of gas hydrates technology is still in the stage of fumbling at present, and exploitation of the countries in the world to gas hydrates is stillThe standard of a sleeve forming is not made, the method for in-house laboratory investigation is still the main body of exploitation of gas hydrates technical research,But currently for the research of gas hydrates, hydrate macroscopic property and physical Quality Research are more focused on, it is fewTo hydrate generation and the dynamic microexamination of decomposable process.
Photoetching glass model is a kind of transparent two dimensional model, and it uses photochemistry lithographic technique, by the casting of natural coreThe true pore system critically photoetching of body section is to being made on flat glass, with reservoir rock pore system in structureTrue standard configuration, similar geometry and fractions distribution.Using simulation model of microscopic, gas hydrates can be intuitively observedThe growth of crystal, decompose, to instructing indoor and field test significant.
CN104407649B announces a kind of temperature control pressue device for gas hydrates crystal growth optical observation, leads toThe placement gas hydrates sample on sample stage is crossed, and carries out in-situ preparation and the decomposition of gas hydrates, experiment parameterHandled by terminal.But after its gas hydrates sample is put into sample stage, it can only be arrived by microscopicSample surfaces change, it is difficult to observe sample interior hydrate growth and decomposable process；And its invention device gas access, cooling agentEntrance only has one, and uniform saturation is difficult in the saturated natural gas into sample and cooling agent, to experimental result precision meetingHave a certain impact.In view of this, the present inventor proposes a kind of gas hydrates chemical flooding photoetching glass model microcosmos experimentDevice, to meet the requirement of current three-dimensional simulation experimental provision, and the defects of overcome prior art, experimental provision of the present invention usesThree-dimensional visualization mode generates to exploitation of gas hydrate, decomposable process carries out microscopic observation, photoetching glass used in the present inventionUsing photochemistry lithographic technique, by being made in the true hole critically photoetching that the natural core body of casting is cut into slices to flat glass, protectThe accuracy of experiment has been demonstrate,proved, has had certain directive function to gas hydrates physical property research.
The content of the invention
The invention discloses a kind of gas hydrates chemical flooding photoetching glass model microcosmos experiment device, device includes supplyingGas system, liquid-supplying system, emulation hole model system, chemical drive system, production system and monitoring system, the present invention use lightMain body of the carved glass as emulation hole model system, supplied by air supply system, liquid-supplying system into emulation hole model systemGas hydrates are formed to natural gas and water, chemical agent is injected by chemical drive system and exploited with simulating chemical flooding, passes through lifeProduction system is implemented to collect to gas hydrate dissociation product, is collected by monitoring system brilliant in gas hydrates experimentationThe growth of body, resolution parameter, photoetching glass used in the present invention use photochemistry lithographic technique, by the true of natural core body of casting sectionThe critically photoetching of real hole ensure that the accuracy of experiment, have to gas hydrates physical property research to being made on flat glassCertain directive function.
Wherein described air supply system is connected with emulation hole model system, the liquid-supplying system and emulation pore model systemSystem is connected, and the chemical drive system is connected with emulation hole model system, the production system and emulation pore model systemSystem is connected, the monitoring system respectively with the air supply system, liquid-supplying system, emulation hole model system, chemical drive system,Production system is connected.
The air supply system is used to provide natural gas for synthesis of natural gas hydrate inside the emulation hole model system；The liquid-supplying system is used to provide water for synthesis of natural gas hydrate inside the emulation hole model system；The chemical flooding systemUnite for injecting chemical agent for the emulation hole model system, to simulate water injection well in actual production；The production systemFor implementing to collect to gas hydrate dissociation product inside emulation hole model system, and analyze natural gas in cataboliteAnd aquatic products amount, to simulate producing well in actual production；The emulation hole model system is used to simulate gas hydratesPressure, temperature, saturation degree, permeability and conventional formation parameter, and main body of the photoetching glass as emulation hole model system；InstituteState monitoring system and be used for air supply system described in real-time collecting, liquid-supplying system, emulation hole model system, chemical drive system, productionSystem operational parameters, data caused by writing task parameter, and experimental implementation is controlled by monitoring system.
Preferably, air supply system of the invention includes natural gas bottle, control valve, supercharging device, gas flowmeter, pressureSensor, temperature sensor, high pressure line, tap valve；Natural gas bottle outlet is connected to supercharging device by high pressure line and enteredMouthful, control valve plays the feed speed effect of regulation natural gas, supercharging device outlet between natural gas bottle and supercharging deviceTap valve inlet is connected to by high pressure line, gas flowmeter, pressure sensor, temperature sensor be located at supercharging device withBetween tapping valve, play a part of monitoring gas flow, pressure, temperature, tap valve export and the emulation pore modelSystem is connected.
Natural gas bottle is conventional chambers experimental facilities in the air supply system, the control valve be with signal transmission andThe traditional regulation valve arrangement of remote control function, the gas flowmeter, pressure sensor, temperature sensor are with signalThe conventional chambers experimental facilities of transfer function, the tap valve is the conventional chambers experimental facilities with diverter function, describedSupercharging device can be constant speed pump group, constant current pump group, constant pressure pump group and other application in the pump group of laboratory experiment.
Preferably, liquid-supplying system of the invention includes water storage device, control valve, supercharging device, fluid flowmeter, pressureSensor, temperature sensor, high pressure line, tap valve；Water storage device outlet is connected to supercharging device by high pressure line and enteredMouthful, control valve plays the feed speed effect of regulation water between water storage device and supercharging device, and supercharging device outlet passes throughHigh pressure line is connected to tap valve inlet, and fluid flowmeter, pressure sensor, temperature sensor are located at supercharging device and tapBetween valve, play a part of monitoring fluid flow, pressure, temperature, tap valve export and the emulation hole model systemIt is connected.
In the liquid-supplying system water storage device include water bottle, intermediate receptacle, beaker and other there is the routine of water storage functionLaboratory experiment equipment, the water storage device internal liquid include stratum water, seawater, simulated formation water and other experimental waters, instituteControl valve is stated as the traditional regulation valve arrangement with signal transmission and remote control function, the fluid flowmeter, pressureSensor, temperature sensor are the conventional chambers experimental facilities with signal transfer functions, and the tap valve is with shuntingThe conventional chambers experimental facilities of function, the supercharging device can be constant speed pump group, constant current pump group, constant pressure pump group and other shouldPump group for laboratory experiment.
Preferably, chemical drive system of the invention includes chemical agent intermediate receptacle, control valve, supercharging device, stirring dressPut, fluid flowmeter, pressure sensor, temperature sensor, high pressure line, seal nipple；Chemical agent intermediate receptacle passes through high pressurePipeline is connected to supercharging device entrance, and control valve plays regulation chemistry between chemical agent intermediate receptacle and supercharging deviceAgent feed speed acts on, and supercharging device outlet is connected to agitating device entrance by high pressure line, and agitating device is used to feedChemical agent therein stirs, and agitating device outlet is connected to seal nipple by high pressure line, and fluid flowmeter, pressure passSensor, temperature sensor play a part of the chemical agent flux of monitoring, pressure, temperature between agitating device and seal nipple,Seal nipple is connected with the emulation hole model system.
It is real to include the conventional chambers with storage, export chemical agent function for chemical agent intermediate receptacle in the chemical drive systemEquipment is tested, the control valve is the traditional regulation valve arrangement with signal transmission and remote control function, and the stirring fillsBe set to the conventional chambers experimental facilities with agitating function, the fluid flowmeter, pressure sensor, temperature sensor be withThe conventional chambers experimental facilities of signal transfer functions, the supercharging device can be constant speed pump group, constant current pump group, constant pressure pump group withAnd other are applied to the pump group of laboratory experiment, the seal nipple is that the conventional chambers experiment with connection and sealing function is setIt is standby.
Preferably, production system of the invention includes seal nipple, control valve, pressure sensor, temperature sensor, heightPressure pipeline, back-pressure valve, gas-liquid separator, water storage device, gas intermediate receptacle；Back pressure valve inlet passes through high-voltage tube with seal nippleLine connects, and control valve, pressure sensor, temperature sensor play monitoring output object between seal nipple and back-pressure valveThe effect of pressure, temperature, back-pressure valve play the effect of simulated formation pressure, and the back pressure valve outlet is connected with gas-liquid separator,Output object is implemented gas-liquid separation by gas-liquid separator, and output water is fed into water storage device, and output gas feeds gas intermediate receptacle；Seal nipple is connected with emulation hole model system, and output object caused by the model system work of emulation hole passes through seal nippleInto production system.
In the production system seal nipple be with connection and sealing function conventional chambers experimental facilities, the regulationValve be with signal transmission and remote control function traditional regulation valve arrangement, the pressure sensor, temperature sensorFor the conventional chambers experimental facilities with signal transfer functions, the back-pressure valve sets for the conventional chambers experiment with back pressure functionStandby, the gas-liquid separator is the conventional chambers experimental facilities with gas-liquid separating function, the water storage device include water bottle, inBetween container, beaker and other there is the conventional chambers experimental facilities of water storage function.
Preferably, emulation hole model system of the invention includes insulating box, reaction vessel, bolt hole, photoetching glass, pressureForce snesor, temperature sensor, temperature tube, pressure-measuring pipe, air supply inlet, air supply pipe, feed flow entrance, feed pipe, connecting tube, tuneSave valve, seal nipple；Reaction vessel is made up of upper cover plate, bottom plate and sealing gasket, and upper cover plate, bottom plate material are safety glass,Sealing gasket material is high pressure resistant rubber, and bolt hole runs through upper cover plate and bottom plate, and the upper cover plate is located at the bottom plate top, by spiral shellThe cuboid groove confined space that keyhole is formed with bolt seal, photoetching glass are positioned in the groove of reaction vessel, and pressure passesSensor is connected to photoetching glass by pressure-measuring pipe, and pressure-measuring pipe is located at reaction vessel interior, and temperature sensor is connected by temperature tubeIn photoetching glass, temperature tube is located at reaction vessel interior, and air supply inlet is connected to photoetching glass by air supply pipe, and air supply pipe is located atReaction vessel interior, feed flow entrance are connected to photoetching glass by feed pipe, and feed pipe is located at reaction vessel interior, seal nipplePhotoetching glass is connected to by connecting tube, connecting tube is located at reaction vessel interior, and control valve is located at reaction vessel and closeOn connecting tube between sealing joint, connecting tube is used to inject fluid and extraction fluid into photoetching glass, and the reaction is heldDevice, bolt hole, photoetching glass, pressure sensor, temperature sensor, temperature tube, pressure-measuring pipe, air supply inlet, air supply pipe, feed flow enterMouth, feed pipe, connecting tube, control valve, seal nipple are respectively positioned in insulating box.
The reaction vessel is fluted body cuboid safety glass, its length, width range 10-20cm, altitude rangeFor 5-10cm, highest simulated storage pressure 15Mpa, the temperature sensor is with temperature-monitoring function and signal transfer functionsConventional chambers experimental facilities, the pressure sensor is real with the conventional chambers of pressure monitoring function and signal transfer functionsTest equipment.
Valve is tapped in the air supply system and passes through high pressure line and air supply inlet phase in the emulation hole model systemConnect, valve is tapped in the liquid-supplying system institute and is connected by high pressure line with feed flow entrance in the emulation hole model systemConnect, seal nipple is connected with seal nipple in the emulation hole model system in the chemical drive system, the production systemSeal nipple is connected with seal nipple in the emulation hole model system in system.
Preferably, monitoring system of the invention includes computer, microscope, transmission cable, and the microscope is used for real-timeObserve the change of photoetching inside glass, the air supply system, liquid-supplying system, emulation hole model system, microscope, chemical flooding systemSystem, production system are connected by transmission cable with computer, to real-time collecting temperature, pressure, output in experimentationLogistics capacity, microscope imaging and other experimental datas, and experimental implementation is controlled by monitoring system.
A kind of gas hydrates chemical flooding photoetching glass model microcosmos experiment device beneficial effect of the embodiment of the present inventionFor：
1) air supply system and liquid-supplying system are separate in the present invention, have multiple air supply inlets and confession on reaction vessel surfaceLiquid entrance, the natural gas and moisture portion for making injection reaction vessel interior are more uniformly distributed, and separate feeding pipe is to imitativeIt is higher that precision is injected when natural gas and water are injected in true pore model system, by controlling air supply system and liquid-supplying system to injectAmount, different gas hydrates saturation degree storages can be simulated.
2) reaction vessel main body safety glass is transparent in present invention emulation hole model system, it is observed that naturallyThe change of different time sections gas hydrates crystal, has to gas hydrates physical property research when gas hydrate is generated and decomposedCertain directive function.
3) application based on monitoring system, temperature, pressure, output logistics in different time section in experiment can effectively be gatheredAmount, microscope imaging and other experimental datas, Mathematical Model Analysis can be carried out in input computer in real time, for by physical simulation experimentAs a result it is combined with Numerical Experiment result.
4) the photoetching glass model that the present invention uses is a kind of transparent two dimensional model, and it uses photochemistry lithographic technique,By being made in the true pore system critically photoetching that the body of casting of natural core is cut into slices to flat glass, there is reservoir in structureThe true standard configuration of blowhole system, similar geometry and fractions distribution, can improve experimental precision and accuracy.
5) use based on chemical drive system, effectively chemical flooding exploitation of gas hydrate in actual well site environment can be enteredRow simulation, different temperatures, injection rate, injection rate situation bet different type chemical agent can be simulated gas hydrates are adoptedThe influence of yield.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodimentAccompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, forFor those skilled in the art, it can also be obtained on the premise of not paying creative work according to these accompanying drawings other attachedFigure.
Fig. 1 is the structural representation of experimental provision.
Fig. 2 is air supply system detailed construction schematic diagram.
Fig. 3 is liquid-supplying system detailed construction schematic diagram.
Fig. 4 is chemical drive system detailed construction schematic diagram.
Fig. 5 is production system detailed construction schematic diagram.
Fig. 6 is emulation hole model system detailed construction schematic diagram.
Fig. 7 is emulation hole model system side view.
Drawing reference numeral：1st, natural gas bottle 2, control valve 3, supercharging device 4, gas flowmeter 5, pressure sensor 6, temperatureSensor 7, high pressure line 8, tap valve 9, water storage device 10, fluid flowmeter 11, methanol intermediate receptacle 12, ethanol centre holdDevice 13, agitating device 14, seal nipple 15, back-pressure valve 16, gas-liquid separator 17, gas intermediate receptacle 18, insulating box 19, reactionContainer 20, bolt hole 21, photoetching glass 22, temperature tube 23, pressure-measuring pipe 24, air supply inlet 25, air supply pipe 26, feed flow entrance 27,Feed pipe 28, connecting tube 29, upper cover plate 30, sealing gasket 31, bottom plate.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, completeSite preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on thisEmbodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not madeExample is applied, belongs to the scope of protection of the invention.
As shown in figure 1, it is a kind of knot of gas hydrates chemical flooding photoetching glass model microcosmos experiment device of the present inventionStructure schematic diagram, including air supply system, liquid-supplying system, emulation hole model system, chemical drive system, production system and monitoring systemSystem；Wherein described air supply system is connected with emulation hole model system, and the liquid-supplying system is with emulating hole model system phaseConnection, the chemical drive system are connected with emulation hole model system, and the production system is with emulating hole model system phaseConnection, the monitoring system respectively with the air supply system, liquid-supplying system, emulation hole model system, chemical drive system, productionSystem is connected.
The air supply system is used to provide natural gas for synthesis of natural gas hydrate inside the emulation hole model system；The liquid-supplying system is used to provide water for synthesis of natural gas hydrate inside the emulation hole model system；The chemical flooding systemUnite for injecting chemical agent for the emulation hole model system, to simulate water injection well in actual production；The production systemFor implementing to collect to gas hydrate dissociation product inside emulation hole model system, and analyze natural gas in cataboliteAnd aquatic products amount, to simulate producing well in actual production；The emulation hole model system is used to simulate gas hydratesPressure, temperature, saturation degree, permeability and conventional formation parameter, and main body of the photoetching glass as emulation hole model system；InstituteState monitoring system and be used for air supply system described in real-time collecting, liquid-supplying system, emulation hole model system, chemical drive system, productionSystem operational parameters, data caused by writing task parameter, and experimental implementation is controlled by monitoring system.
A kind of above-mentioned gas hydrates chemical flooding photoetching glass model microcosmos experiment device is carried out below furtherDescription：
As shown in Fig. 2 in the present embodiment, air supply system includes natural gas bottle 1, control valve 2, supercharging device 3, gas streamGauge 4, pressure sensor 5, temperature sensor 6, high pressure line 7, tap valve 8.
The outlet of natural gas bottle 1 is connected to the entrance of supercharging device 3 by high pressure line 7, and control valve 2 is located at natural gas bottle 1Between supercharging device 3, regulation natural gas feed speed effect is played, the outlet of supercharging device 3 is connected to point by high pressure line 7The entrance of valve 8 is connect, gas flowmeter 4, pressure sensor 5, temperature sensor 6 are located between supercharging device 3 and tap valve 8,Play a part of monitoring gas flow, pressure, temperature, the outlet of tap valve 8 is connected with the emulation hole model system, usedMake to emulation hole model system supply natural gas.
As shown in figure 3, in the present embodiment, liquid-supplying system includes water storage device 9, control valve 2, supercharging device 3, liquid flowGauge 10, pressure sensor 5, temperature sensor 6, high pressure line 7, tap valve 8.
The outlet of water storage device 9 is connected to the entrance of supercharging device 3 by high pressure line 7, and control valve 2 is located at water storage device 9Between supercharging device 3, the feed speed effect of regulation water is played, the outlet of supercharging device 3 is connected to tap valve by high pressure line 78 entrances of door, fluid flowmeter 10, pressure sensor 5, temperature sensor 6 are located between supercharging device 3 and tap valve 8, playedMonitor fluid flow, pressure, temperature effect, tap valve 8 outlet with it is described emulate hole model system is connected, as toEmulate hole model system supply water.
As shown in figure 4, in the present embodiment, chemical drive system includes methanol intermediate receptacle 11, ethanol intermediate receptacle 12, regulationIt is valve 2, supercharging device 3, agitating device 13, fluid flowmeter 10, pressure sensor 5, temperature sensor 6, high pressure line 7, closeSealing joint 14.
Methanol intermediate receptacle 11, ethanol intermediate receptacle 12 are connected to the entrance of supercharging device 3, regulating valve by high pressure line 7Door 2 plays regulation chemical agent feed speed and made between methanol intermediate receptacle 11, ethanol intermediate receptacle 12 and supercharging device 3With the outlet of supercharging device 3 is connected to the entrance of agitating device 13 by high pressure line 7, and agitating device 13 is therein for that will feedMethanol, ethanol and stirred with liquid water, described to be added with liquid water by agitating device end cap, the outlet of agitating device 13 passes through heightPressure pipeline 7 is connected to seal nipple 14, fluid flowmeter 10, pressure sensor 5, temperature sensor 6 be located at agitating device 13 withBetween seal nipple 14, play a part of the chemical agent flux of monitoring, pressure, temperature, seal nipple 14 and the emulation hole mouldType system is connected.
As shown in figure 5, in the present embodiment, production system includes seal nipple 14, control valve 2, pressure sensor 5, temperatureSpend sensor 6, high pressure line 7, back-pressure valve 15, gas-liquid separator 16, water storage device 9, gas intermediate receptacle 17.
The entrance of back-pressure valve 15 is connected with seal nipple 14 by high pressure line 7, control valve 2, pressure sensor 5, temperatureSensor 6 plays a part of monitoring output object pressure, temperature, back-pressure valve 15 rises between seal nipple 14 and back-pressure valve 15Acted on to simulated formation pressure, the back-pressure valve 15 outlet is connected with gas-liquid separator 16, and gas-liquid separator 16 is by output objectImplement gas-liquid separation, and output water is fed into water storage device 9, output gas feeds gas intermediate receptacle 17, and seal nipple 14 is with imitatingTrue pore model system is connected, and output object caused by the model system work of emulation hole enters production by seal nipple 14 and isSystem.
As shown in Figure 6,7, in the present embodiment, emulation hole model system includes insulating box 18, reaction vessel 19, bolt hole20th, photoetching glass 21, pressure sensor 5, temperature sensor 6, temperature tube 22, pressure-measuring pipe 23, air supply inlet 24, air supply pipe 25,Feed flow entrance 26, feed pipe 27, connecting tube 28, control valve 2, seal nipple 14, upper cover plate 29, sealing gasket 30, bottom plate 31.
Reaction vessel 19 is made up of upper cover plate 29, bottom plate 31 and sealing gasket 30, and upper cover plate 29, the material of bottom plate 31 are tempering glassGlass, bolt hole 20 run through upper cover plate 29 and bottom plate 31, and the upper cover plate 29 is located at the top of bottom plate 31, spiral shell is used by bolt hole 20Bolt seals the cuboid groove confined space to be formed, and photoetching glass 21 is positioned in the groove of reaction vessel 19, pressure sensor 5Photoetching glass 21 is connected to by pressure-measuring pipe 23, pressure-measuring pipe 23 is located inside reaction vessel 19, and temperature sensor 6 passes through temperature tube22 are connected to photoetching glass 21, and temperature tube 22 is located inside reaction vessel 19, and air supply inlet 24 is connected to light by air supply pipe 25Carved glass 21, air supply pipe 25 are located inside reaction vessel 19, and feed flow entrance 26 is connected to photoetching glass 21 by feed pipe 27, supplyLiquid pipe 27 is located inside reaction vessel 19, and seal nipple 14 is connected to photoetching glass 21, connecting tube 28 by connecting tube 28Inside reaction vessel 19, control valve 2 is described on the connecting tube 28 between reaction vessel 19 and seal nipple 14Reaction vessel 19, bolt hole 20, photoetching glass 21, pressure sensor 5, temperature sensor 6, temperature tube 22, pressure-measuring pipe 23, supplyEntrance 24, air supply pipe 25, feed flow entrance 26, feed pipe 27, connecting tube 28, control valve 2, seal nipple 14, upper cover plate 29,Sealing gasket 30, bottom plate 31 are respectively positioned in insulating box 18；
Valve 8 is tapped in the air supply system and passes through high pressure line 7 and air supply inlet in the emulation hole model system24 are connected, and valve 8 is tapped in the liquid-supplying system institute and is entered by high pressure line 7 and feed flow in the emulation hole model systemMouth 26 is connected, and seal nipple 14 is connected with seal nipple 14 in the emulation hole model system in the chemical drive systemConnect, seal nipple 14 is connected with seal nipple 14 in the emulation hole model system in the production system.
In the present embodiment, the monitoring system includes computer (in figure not depending on), microscope (not regarded in figure), transmission electricityCable (does not regard) in figure, the air supply system, liquid-supplying system, emulation hole model system, microscope, chemical drive system, production systemSystem be connected by transmission cable with computer, in experimentation real-time collecting temperature, pressure, output logistics capacity, showMicro mirror is imaged and other experimental datas, and controls experimental implementation by monitoring system.
Device of embodiment of the present invention workflow is introduced as follows below based on above-mentioned accompanying drawing, work of the embodiment of the present inventionIt is divided into following steps as flow：
Step 1：Using photochemistry lithographic technique, by the true pore system photoetching that the body of casting of natural core is cut into slices to flatOn surface glass, photoetching glass 21 to be used is made, photoetching glass 21 is put into reaction vessel 19, by bolt hole 20 to upper cover plate29th, sealing gasket 30, bottom plate 31 implement sealing, and pressure sensor 5 is connected into pressure-measuring pipe 23, temperature sensor 6 is connected into surveyWarm pipe 22, the control valve 2 being connected with connecting tube 28 is closed, emulation hole model system is put into insulating box 18.
Step 2：By air supply system, liquid-supplying system to emulation hole model system in feed natural gas and it is aquatic all day longRight gas hydrate, the supercharging device 3 in air supply system, liquid-supplying system provides operating pressure for emulation hole model system, by perseveranceIncubator 18 is adjusted to analog temperature, and control valve in liquid-supplying system 2 is opened, and water is supplied in water storage device 9 and enters supercharging device 3Middle supercharging, by tapping feed flow entrance 26 in the connection emulation hole model system of valve 8, open supercharging device 3 and supply supply waterEnter to emulate in hole model system, monitor feed flow ginseng in real time by fluid flowmeter 10, pressure sensor 5, temperature sensor 6Number, supply water close tap valve 8 to form confined space after reaching scheduled volume；Control valve in air supply system 2 is opened, dayNatural gas enters in supercharging device 3 and is pressurized in right gas cylinder 1, by tap supplied in the connection emulation hole model system of valve 8 intoMouthfuls 24, open supercharging device 3 and feed natural gas in emulation hole model system, by gas flowmeter 4, pressure sensor 5,Monitoring supply parameter, infeed natural gas close tap valve 8 to form confined air to temperature sensor 6 after reaching scheduled volume in real timeBetween；After natural gas and supply water enter emulation hole model system, emulation hole model system constant temperature is placed, it is to be generatedNext step operation is carried out after gas hydrates physical property is stable, gathered in real time by monitoring system temperature in experimentation, pressure,Micro mirror is imaged and other experimental datas.
Step 3：It is depressured and is exploited by production system simulation, by seal nipple in production system 14 and emulation pore modelSeal nipple 14 is connected in system, and back-pressure valve 15 is modulated into simulated storage pressure, control valve 2 is opened, and improves insulating box 18Internal temperature, make gas hydrate dissociation, gas-liquid separation is implemented to output object by gas-liquid separator 16, passes through water storage device9 pairs of recovered waters are collected, and output gas is collected by gas intermediate receptacle 17, passes through pressure sensor 5, TEMPDevice 6 records experiment parameter in real time；By emulating the record hydration in real time of pressure sensor 5 in hole model system, temperature sensor 6Experiment parameter in thing decompression recovery process；Gathered in real time by monitoring system temperature in experimentation, pressure, output logistics capacity,Micro mirror is imaged and other experimental datas.
Step 4：By chemical flooding system simulation chemical flooding, by seal nipple 14 in chemical drive system and emulation hole mouldSeal nipple 14 connects in type system, is added in agitating device 13 and matches somebody with somebody liquid water, unlatching and supercharging device 3 and control valve 2, leads toCross supercharging device 3 and the methanol in methanol intermediate receptacle 11, ethanol intermediate receptacle 12 and ethanol are fed into stirring dress by a certain percentagePut 13, methanol, ethanol, stirred in agitating device 13 with liquid water, the chemical agent to stir is via the note of seal nipple 14Enter photoetching glass 21, injection parameter is monitored by fluid flowmeter 10, pressure sensor 5, temperature sensor 6 in real time, passes through lifeProduction system is collected to output object；Gather temperature in experimentation, pressure, output amount of substance, micro- in real time by monitoring systemMirror is imaged and other experimental datas.
During above-mentioned steps are carried out, the monitoring system passes through pressure sensor 5, temperature sensor 6, gas flowmeter4th, fluid flowmeter 10 and microscope are monitored in real time, and record each stage design parameter of experiment, by connecting regulating valve2 pairs of experimentations of door manipulate.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detailDescribe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, the guarantor being not intended to limit the present inventionScope is protected, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., should be included in thisWithin the protection domain of invention.