CN108318666A - The more PROCESS COUPLING experimental rigs of rock, gas of Unconventional gas - Google Patents

The more PROCESS COUPLING experimental rigs of rock, gas of Unconventional gas Download PDF

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Publication number
CN108318666A
CN108318666A CN201810405516.2A CN201810405516A CN108318666A CN 108318666 A CN108318666 A CN 108318666A CN 201810405516 A CN201810405516 A CN 201810405516A CN 108318666 A CN108318666 A CN 108318666A
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China
Prior art keywords
gas
clamping
pressure
valve
differential pressure
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CN201810405516.2A
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Chinese (zh)
Inventor
邰刘龙
费小莉
王刚涛
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Jiangsu Tuo Chuan Scientific Research Apparatus Co Ltd
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Jiangsu Tuo Chuan Scientific Research Apparatus Co Ltd
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Priority to CN201810405516.2A priority Critical patent/CN108318666A/en
Publication of CN108318666A publication Critical patent/CN108318666A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24Earth materials

Abstract

This application provides the rocks of Unconventional gas, the more PROCESS COUPLING experimental rigs of gas, it is characterized in that, the experimental rig includes the first clamping device, second clamping device, differential pressure pick-up, first clamping device, the both ends pipeline of second clamping device is equipped with the first solenoid valve, the both ends pipeline of the differential pressure pick-up is equipped with hand-operated valve, the differential pressure pick-up 3 is simultaneously connected to second solenoid valve, design and develop the purpose of the present apparatus, this system can carry out true triaxial experiment to danks, find out the relationship of coalbed methane reservoir permeability in the process of development and effective stress part, the development scheme of coal bed gas can be reasonably determined.

Description

The more PROCESS COUPLING experimental rigs of rock, gas of Unconventional gas
Technical field
The present invention relates to technical field of electric appliances, and in particular to the more PROCESS COUPLINGs experiments of a kind of rock of Unconventional gas, gas Device.
Background technology
Existing technology does not have such device, such device energy simulated formation temperature, pressure, formation fluid in illusion Enriching Coalbed Methane is at Tibetan, Adsorption and desorption process under ambient condition.The absorption of coal sample is realized using advanced computer software technology Dynamic is tested;Utilize external heating
Device makes coal sample that oxidative heat generation reaction occur.The real conditions for simulating surface layer carry out the scientific experiment of depth, find out conjunction Reason exploitation oil, mining preferred plan, interests are proceeded into maximizations, therefore needs are provided a device that solve The technical issues of stating.
Invention content
The present invention overcomes the shortcomings of that background technology provides, and designs and develops the purpose of the present apparatus, and this system can be to danks Carry out true triaxial experiment, the shale permeable sandstone multi- scenarios method under research stress loading, temperature load, multicomponent gas diffusion The lower reservoir conductibility of more PROCESS COUPLING effects is improved in process, the experiment support that science is provided for extremely complicated deep resource exploitation Energy model penetration rate model, self-heating model and Heat transmission model, gas diffusion model, reservoir matrix contracting model are unconventional Natural gas extraction provides important experimental study means.Find out the permeability and effective stress of coalbed methane reservoir in the process of development The relationship of part can reasonably determine the development scheme of coal bed gas.
The present invention provides following technical proposals:The more PROCESS COUPLING experimental rigs of rock, gas of Unconventional gas, feature It is, the experimental rig includes the first clamping device 1, the second clamping device 2, differential pressure pick-up 3, first clamping device 1, the both ends pipeline of the second clamping device 2 is equipped with the first solenoid valve 4, and the both ends pipeline of the differential pressure pick-up 3 is equipped with hand Dynamic valve, the differential pressure pick-up 3 are simultaneously connected to second solenoid valve 5, and first clamping device 1, the second clamping device 2 pass through medium It is applied to the pressure of 8~30Mpa of clamping sample, second clamping device 2 heats clamping sample temperature, institute by temp-controlling element It states 2 side of the second clamping device and is equipped with strain transducer 6, second clamping device 2 is equipped with the thermometer being connected to its inner cavity 7, first clamping device 1, the second clamping device 2, differential pressure pick-up 3 both ends be equipped with pressure test mechanism 8.
First clamping device 1, the second clamping device 2 are applied to the pressure of 8~30Mpa of clamping sample by medium, The medium is gas-liquid mixture.
The outlet of first clamping device 1, the second clamping device 2, differential pressure pick-up 3 is equipped with gas-liquid separation recycling machine Structure.
Beneficial effects of the present invention:One, in due course measure under complex stress condition core along principal direction of stress without constraint Deformation.Under false condition of triaxial stress, axial plunger cannot limit the axial deformation of core;Under true triaxial stress condition, six A plunger cannot equally limit deformation of the core along six principal direction of stress.Design maximum axial stress is 50MPa, maximum loop It is 40MPa to stress.Two, obtaining the core adsorption/desorption gas under complex stress condition leads to sample entirety and local deformation Amount.Core is determined along the overall deformation of principal direction of stress according to plunger displacement amount, and local deformation is by being pasted onto answering for surface Become piece to measure.It is mutually converted by part expansion and bulk expansion to control coal permeability evolution rule.Three, it measures in due course complicated Core adsorption/desorption gas flow or gas vent flow and the in due course of gas component concentrations change with time under stress state. Four, complex stress condition can be carried out, under the conditions of true triaxial.Gas gas drive replaces, hydraulic fracturing etc. coal body stream under different fluids Gu coupling experiment measures.Five, oxygen can be simulated by three axle clamp holders of vacation and participate in lower coal body evolution temperature-rise period, obtained in due course Oxidizing temperature, gas flow, the parameters such as multicomponent gas concentration, while in coal body loading chamber and the safety of pipeline have peace Full safeguard.Six, ensure mold exit gas flow measurement precision, solve back pressure control accuracy difference and output flow state not Stable problem, anti-blocking performance is strong, improves control accuracy and service life.Design structure is not easy to block, and switch DP is small, rings Should be rapid, it is quick on the draw.Seven, ensure that sealing of the foil gauge conducting wire in three axle clamp holders, replacement easy to disassemble, foil gauge are glued Patch, sealing, installation, communication and the processing of strain deformation amount data are necessary.Eight, in order to ensure the authenticity of experiment, true triaxial Ensure that center of effort is constant when experiment, test specimen stress causes each to remain on test specimen center line to the center of deformation.Nine, it is System realizes Automatic Control and perfect data-handling capacity, acquires the data such as pressure, temperature, flow in real time, automatically processes pressure Power, temperature, percolation curve and laboratory report is provided automatically.Major experimental Row control can be realized by remote software, can be cut The demand for closing experiment, meets relevant requirement of experiment, there is perfect alarm and safety protection function.
Description of the drawings
Fig. 1 is the system construction drawing of the present invention, is also system flow chart.
Specific implementation mode
Below in conjunction with specific embodiment, the invention will be further described.
In Fig. 1:First clamping device 1, the second clamping device 2, differential pressure pick-up 3, the first solenoid valve 4, second solenoid valve 5, strain transducer 6, thermometer 7, pressure test mechanism 8, wherein V3~9, V10~12, V15~20, V21~31 indicate each The code name of valve.
The more PROCESS COUPLING experimental rigs of rock, gas of Unconventional gas, the experimental rig include the first clamping device 1, Second clamping device 2, differential pressure pick-up 3, first clamping device 1, the second clamping device 2 both ends pipeline be equipped with first The both ends pipeline of solenoid valve 4, the differential pressure pick-up 3 is equipped with hand-operated valve, and the differential pressure pick-up 3 is simultaneously connected to second solenoid valve 5, first clamping device 1, the second clamping device 2 are applied to the pressure of clamping sample 8~30Mpa by medium, and described the Two clamping devices 2 heat clamping sample temperature by temp-controlling element, and 2 side of the second clamping device is equipped with strain transducer 6, Second clamping device 2 is equipped with the thermometer 7 that is connected to its inner cavity, first clamping device 1, the second clamping device 2, poor The both ends of pressure sensor 3 are equipped with pressure test mechanism 8.First clamping device 1, the second clamping device 2 are cylinder type clamping machine Structure, the patent that our company of structure and Patent No. 201720110057.6 applies is consistent, first clamping device 1, the Two clamping devices 2 are applied to the pressure of 8~30Mpa of clamping sample by medium, and the medium is gas-liquid mixture.
The outlet of first clamping device 1, the second clamping device 2, differential pressure pick-up 3 is equipped with gas-liquid separation recycling machine Structure.
Model system includes mainly true triaxial clamper and false three axle clamp holders.The suitable core ruler of true triaxial clamper It is very little:Rectangular-shape core high 30mm, wide 30mm, long 70mm;The suitable core size of false three axle clamp holders:Cylindric core A diameter of 50mm, length 100mm;Design maximum axial pressure is 50MPa, and maximum circumferential pressure is 40MPa, and maximum is oozed Flowing pressure 35MPa.True triaxial clamper and false three axle clamp holders are designed with pressure break sealed bolster, and when pressure break is installed to rock core end Face, reaches sealing under the action of axis pressure, and when pressure break needs to carry out simulation well processing to rock core, simulates well diameter, the ginsengs such as depth It is several to require to determine according to the experiment.True triaxial clamper is connected and installed with displacement with false three axle clamp holder axial direction core chamber portion outboards Sensor can pass through displacement sensor coal sample axial displacement variable quantity after loading axis pressure.In false three axle clamp holder rock cores four The circumferentially and axially direction in week is equipped with 2 to 4 foil gauges, and 2 are respectively installed on the front and back of true triaxial clamper, top and bottom A foil gauge, data line are drawn by displacement sensor offside, and the variation strained in coal sample, which is converted to resistance variations, passes through survey Test instrument shows and is communicated with computer software.
The compositions such as container:Intermediate receptacle selects ZR-3 types, volume 1000ml.Pressure resistance:50MPa, temperature:≤ 200 DEG C, Material:316L materials, displacement is non-corrosive and Korrosionsmedium for storing, and works as a buffer.
Constant speed and constant pressure pumps and ring presses confining pressure all to be watched from motion tracking pump using number position monitor
Take control circuit, make solution under any pressure condition can precision flow, and make flow at high speed
Steadily, flow-control scope:Flow:0.001~59/min;Flow accuracy 0.001ml/min,
0~70MPa of pressure;Constant speed and constant pressure pump selects TC-100D types twin cylinder pump and ring that confining pressure is pressed to be pumped from motion tracking and selects TC- 100D type simplex pumps.TC-100D types pump has the function of single double pump selection, constant voltage mode, constant current mode, tracing mode etc..PLC Control system real-time display pressure, flow, flow changing curve, have the function of Superpressure stop, can be with electricity by RS232 interfaces Brain connects, and passes through the control of software realization computer, operation.
Operating procedure:One, experiment before using rock core compacting tool set make moulded coal 30 × 30 × 70mm and φ 50 × The rock core of 100mm.Two, power supply, air source and pipeline on instrument are connected, upper all valves of blinding off a line.Three, pneumatics is opened The power switch of machine, insulating box, computer and pump.Four, air compressor machine valve is opened, compressed air enters in storage tank, and storage tank is full of gas Pressure shows 0.7MPa after body.Five, air source nitrogen, methane, helium that experiment needs are ready to, gas pressurization system switch board Lower-left side-inlet 1 connects nitrogen, and air inlet 2 connects methane, and the left back side-inlet 3 of electric control cabinet connects helium.Six, gas is surveyed Permeability laboratory operating procedures:1, computer software is opened, click lower left corner equipment is online, clicks online.2, it is blocked in experiment parameter The type of interior selection clamper, the diameter/length of side and length of rock sample.3, the core holding unit of gas permeability is advised below centre Lattice, lower right corner new files title.4, constant temperature chamber door is opened, corresponding clamper is chosen and puts into rock sample in clamper, connection Good pipeline.Constant temperature chamber door is closed, the setting experiment required temperature on insulating box, opening oven heat, wind turbine, illumination are pressed Button.Insulating box is not used such as, and 50 clampers of φ have a set of dedicated flexible heater set, flexible heater set is sleeved on outside clamper Face, aviation plug tapping behind insulating box open end cap, and lead connects power supply from centre through following.In insulating box Lower gripper heat button is pressed on panel.Heating temperature of the flexible heater set to clamper is controlled by clamper temperature control on panel Degree.There are 2 temperature measuring points on clamper, temperature probe is inserted into clamper temperature-measuring port, is shown by instrument above insulating box Clamper internal temperature.5, nitrogen and methane are pressurized respectively:It is pressurized nitrogen:Cylinder valve is first opened, then opens control Case panel valve V3, steel cylinder pressure cylinder pressure gauge on gas pressurization system panel are shown.Open valve V5 compressed airs Valve pumps gas boosting and provides power, and gas boosting pump starts to carry out compression supercharging to nitrogen.Opening valve V6 makes supercharging gas The pressure that body enters in storage tank inner storage tank is read on N2 pressure of storage tank tables below the control cabinet, when gas boosting is to experimental pressure Pressure reducing valve 3 on adjusting control case panel reads the pressure after decompression by N2 decompressed pressure tables.It is pressurized methane gas:First beat Cylinder valve is opened, then opens steel cylinder import high pressure valve V4 on pressure charging system panel, steel cylinder pressure is on gas pressurization system panel Cylinder pressure gauge is shown.Driving imported valve V5 is opened, gas boosting is pumped, power is provided, gas boosting pump starts methane Air pressure contracting supercharging.High pressure gas outlet valve V8 on panel is opened, gas enters in methane gas storage tank.Methane gas boost pressure It is shown by panel upper outlet pressure.Pressure reducing valve on pressure charging system panel is adjusted when gas boosting is to experimental pressure, is passed through It adjusts pressure gauge and reads the pressure after decompression.6, true triaxial clamper is vacuumized:By computer software open pneumatic operated valve V12, V15, V17, V30 open valve V31 manually, and vacuum-pump power supply is opened on electrical control panel and is vacuumized to pipeline, Vacuum degree is read by vacuum meter below control cabinet.Pneumatic operated valve V30 and control are closed when vacuum degree reaches experiment necessary requirement Cabinet vacuum-pump power supply processed.False three axle clamp holders vacuumize:Pneumatic operated valve V12, V15, V19, V30 are opened by computer software, manually Valve V31 is opened, vacuum-pump power supply is opened on electrical control panel, pipeline is vacuumized, vacuum degree passes through control cabinet Vacuum meter is read below.Pneumatic operated valve V30 and switch board vacuum-pump power supply are closed when vacuum degree reaches experiment necessary requirement.7、 The topped up with water in backpressure pump cup opens valve V25, and backpressure pump is inverted and is absorbed water, and is rotated forward after being filled water when the water of discharge does not have Bubble indicates that the air in pump is cleared.Valve V25 is closed, valve V26 is opened, by pumping the back pressure on desk lower panel Table tests required back pressure value to set.8, it is tested, square rock core is packed into clamper, single cylinder constant speed with true triaxial clamper Constant pressure pump pressurizes to tri- directions clamper X, Y, Z, according to requirement of experiment ring press pump to clamper looper pressure.9, root Temperature requirement sets heating temperature on insulating box according to the experiment, opens insulating box general supply, then open heating, wind turbine, illumination are pressed Button heats insulating box, selects gas, if opening valve V10 with methane gas, if with nitrogen opening valve V9, it is soft Valve V12, V15, V17, V18 are opened in control on part, and inlet and outlet pressure has the pressure sensor of different ranges, according to experiment institute The pressure used opens the pneumatic operated valve of corresponding range, and the numerical value measured with the pressure sensor of corresponding range is more acurrate.Back-pressure valve Outlet has condenser, condenser that need to be connected to the gas-liquid mixture of water circulating cooling experiment institute displacement, and gas-liquid mixture passes through gas Liquid/gas separator is discharged, and liquid is directly collected gas-liquid separator lower end, and liquid is directly collected gas-liquid separator lower end, finally may be used Valve export it can put a measuring container below gas-liquid separator to open valve V29 and measure the body that displacement goes out liquid Product.Gas selects flowmeter to measure volume and turns on solenoid valve V28 if needing to do gas-chromatography, is measured if drained with gas Gas volume opens solenoid valve V27.Differential pressure pick-up both ends valve in insulating box is opened if you need to measure inlet and outlet differential pressure, it is poor to open Pressure sensor bypasses solenoid valve, and the differential pressure value that clamper is imported and exported in experimentation will be shown in system.Displacement passes when experiment Sensor meeting data measured, can directly read, software generates table according to different time, pressure, temperature and displacement on computers Lattice, the time for reading data can be with sets itself.10, in experimentation, if selecting methane gas experiment, when methane gas is sent out Raw leakage, methane alarm will send out alarm, and insulating box general supply can be powered off immediately, stop heating to prevent causing danger.11、 It is tested with three axle clamp holders of vacation, the rock core of φ 50 × 100mm diameters is packed into clamper, open constant speed and constant pressure pumping source, Set in operation interface good berth pattern according to requirement of experiment with 1 single cylinder constant speed and constant pressure pump to retainer shaft to adding Pressure, according to requirement of experiment ring press pump to clamper looper pressure.12, the setting heating temperature on insulating box is required according to experimental temperature Degree opens insulating box general supply, then open heating, wind turbine, lighting button heat insulating box, this clamper is equipped with single Only flexible heater set, as without using that can be sleeved on flexible heater set in the case of insulating box outside clamper, flexibility is added The power supply aviation of hot jacket was inserted tapping behind insulating box and was connected through following.Clamper temperature is set on insulating box panel Degree, opens clamper heat button, and 2 temperature probes are housed on clamper can monitor the pressure inside clamper at any time. Gas is selected, if opening valve V10 with methane gas, if opening valve V9 with nitrogen, is controlled on software and opens valve V12, V15, V19, V20, inlet and outlet pressure have the pressure sensor of different ranges, are opened according to pressure used in experiment corresponding The pneumatic operated valve of range, the numerical value measured with the pressure sensor of corresponding range are more acurrate.Back pressure valve outlet has condenser, condenser It need to be connected to the gas-liquid mixture of water circulating cooling experiment institute displacement, gas-liquid mixture is discharged by gas-liquid separator, and liquid is straight Collection is received in gas-liquid separator lower end, liquid is directly collected gas-liquid separator lower end, and can finally open valve V29 can be Valve export puts a measuring container to measure the volume that displacement goes out liquid below gas-liquid separator.Gas selects flowmeter to measure Volume turns on solenoid valve V28 if needing to do gas-chromatography, and solenoid valve is opened if being drained with gas and measuring gas volume V27.Differential pressure pick-up both ends valve in insulating box is opened if you need to measure inlet and outlet differential pressure, differential pressure pick-up is opened and bypasses electromagnetism Valve will show the differential pressure value that clamper is imported and exported in experimentation in system.Displacement sensor meeting data measured when experiment, It can be directly read on computer, software generates table according to different time, pressure, temperature and displacement, reads the time of data It can be with sets itself.13, in experimentation, if selecting methane gas experiment, when methane gas leaks, methane alarm Alarm will be sent out, insulating box general supply can be powered off immediately, stop heating to prevent causing danger.14, it is closed after testing permanent Heating, wind turbine, mains lighting supply, turn off general supply on incubator.Close gas cylinder valve and booster pump air source.Open valve V11 Gas in air accumulator is vented, if the methane gas of emptying needs to be connected to outside window with hose, is opened on software Pneumatic operated valve V16 is vented pipeline.Constant speed and constant pressure pump is closed, clamper ring pressure blow valve and axial compressive force emptying are opened Valve.Take out rock core in clamper.Backpressure pump V25 valves are opened, back pressure of unstowing pressure.Experiment pipeline is purged with air compressor machine, All valves and switch board power supply are closed, in case next time, experiment used.7, liquid surveys permeability laboratory operating procedures:1 holds piston Device upper end fills the liquid of displacement needed for experiment.2 in backpressure pump cup topped up with water, open valve V25, backpressure pump is inverted Water suction rotates forward after being filled water when the water of discharge does not have bubble to indicate that the air in pump is cleared.Valve V25 is closed, valve is opened Door V26 passes through the back pressure value for pumping the back pressure meter on desk lower panel to set needed for experiment.3 do reality with true triaxial clamper It tests, square rock core is packed into clamper, post foil gauge on rock core if you need to test deformation needs, extraction wire is connected, Constant speed and constant pressure pumping source is opened, good berth mode constant current, constant pressure are set in operation interface according to 3 single cylinder perseverances of requirement of experiment Fast constant pressure pump pressurizes to tri- directions clamper X, Y, Z, according to requirement of experiment ring press pump to clamper looper pressure.4、 It is required to set heating temperature on insulating box according to experimental temperature, opens insulating box general supply, then open heating, wind turbine, illumination Button heats insulating box, opens twin-tub constant speed and constant pressure pumping source, and operating mode constant current, constant pressure, root are set on interface The liquid of required displacement opens pneumatic operated valve V21, V22 or V23 according to the experiment, V24 can also open simultaneously V21, V22, V23, V24 displacements.It opens control on software and opens valve V17, V18, inlet and outlet pressure has the pressure sensor of different ranges, according to Pressure used in experiment opens the pneumatic operated valve of corresponding range, and the numerical value measured with the pressure sensor of corresponding range is more acurrate. Back pressure valve outlet has condenser, condenser that need to be connected to the gas-liquid mixture of water circulating cooling experiment institute displacement, gas-liquid mixture It is discharged by gas-liquid separator, liquid is directly collected gas-liquid separator lower end, and can finally open valve V29 can be in gas Valve export puts a measuring container to measure the volume that displacement goes out liquid below liquid/gas separator.Gas selects flowmeter to measure body Product turns on solenoid valve V28 if needing to do gas-chromatography, and solenoid valve is opened if being drained with gas and measuring gas volume V27.Differential pressure pick-up both ends valve in insulating box is opened if you need to measure inlet and outlet differential pressure, differential pressure pick-up is opened and bypasses electromagnetism Valve will show the differential pressure value that clamper is imported and exported in experimentation in system.Displacement sensor meeting data measured when experiment, It can be directly read on computer, software generates table according to different time, pressure, temperature and displacement, reads the time of data It can be with sets itself.4 are tested with false three axle clamp holders, and the rock core of φ 50 × 100mm diameters is packed into clamper, if you need to Test deformation needs post foil gauge on rock core, and extraction wire is connected, constant speed and constant pressure pumping source is opened, in operation interface On set good berth mode constant current, constant pressure according to requirement of experiment with 1 single cylinder constant speed and constant pressure pump to retainer shaft to adding Pressure, according to requirement of experiment ring press pump to clamper looper pressure.5 require the setting heating temperature on insulating box according to experimental temperature Degree opens insulating box general supply, then open heating, wind turbine, lighting button heat insulating box, this clamper is equipped with single Only flexible heater set, as without using that can be sleeved on flexible heater set in the case of insulating box outside clamper, flexibility is added The power supply aviation of hot jacket was inserted tapping behind insulating box and was connected through following.Clamper temperature is set on insulating box panel Degree, opens clamper heat button, and 2 temperature probes are housed on clamper can monitor the pressure inside clamper at any time.Root The liquid of required displacement opens pneumatic operated valve V21, V22 or V23 according to the experiment, V24 can also open simultaneously V21, V22, V23, V24 drive It replaces.Valve V19, V20 are opened in control on software, and inlet and outlet pressure has the pressure sensor of different ranges, are used according to experiment Pressure open the pneumatic operated valve of corresponding range, the numerical value measured with the pressure sensor of corresponding range is more acurrate.Back pressure valve outlet There are condenser, condenser that need to be connected to the gas-liquid mixture of water circulating cooling experiment institute displacement, gas-liquid mixture passes through gas-liquid point It is discharged from device, liquid is directly collected gas-liquid separator lower end, and liquid is directly collected gas-liquid separator lower end, can finally beat Valve opening door 29 can put a measuring container to measure the volume that displacement goes out liquid by valve export below gas-liquid separator.Gas It selects flowmeter to measure volume and turns on solenoid valve V28 if needing to do gas-chromatography, gas body is measured if drained with gas Product opens solenoid valve V27.Differential pressure pick-up both ends valve in insulating box is opened if you need to measure inlet and outlet differential pressure, opens differential pressure sensing Device bypasses solenoid valve, and the differential pressure value that clamper is imported and exported in experimentation will be shown in system.Displacement sensor meeting when experiment Data measured can be directly read on computers, and software generates table according to different time, pressure, temperature and displacement, be read The time of data can be with sets itself.Heating, wind turbine, mains lighting supply on insulating box are closed after experiment, turn off general supply. Pneumatic operated valve V16 is opened on software to be vented pipeline.Closing axle presses constant speed and constant pressure pump, opens clamper ring and presses blow valve And axial compressive force blow valve.Rock core in clamper is taken out, goes out the displacing fluid in piston container using the pump displacement of twin-tub constant speed and constant pressure, Close twin-tub constant speed and constant pressure pumping source.Backpressure pump V25 valves are opened, back pressure of unstowing pressure.Experiment tube is purged with air compressor machine Road, cleaning piston container close all valves and switch board power supply, in case next time, experiment used.

Claims (3)

1. the more PROCESS COUPLING experimental rigs of the rock of Unconventional gas, gas, which is characterized in that the experimental rig includes the first folder Hold mechanism(1), the second clamping device(2), differential pressure pick-up(3), first clamping device(1), the second clamping device(2)'s Both ends pipeline is equipped with the first solenoid valve(4), the differential pressure pick-up(3)Both ends pipeline be equipped with hand-operated valve, the differential pressure Sensor(3)And it is connected to second solenoid valve(5), first clamping device(1), the second clamping device(2)Applied by medium In the pressure of clamping 8~30Mpa of sample, second clamping device(2)Clamping sample temperature is heated by temp-controlling element, it is described Second clamping device(2)Side is equipped with strain transducer(6), second clamping device(2)Equipped with the temperature being connected to its inner cavity Degree meter(7), first clamping device(1), the second clamping device(2), differential pressure pick-up(3)Both ends be equipped with pressure test Mechanism(8).
2. the more PROCESS COUPLING experimental rigs of the rock of Unconventional gas according to claim 1, gas, which is characterized in that institute State the first clamping device(1), the second clamping device(2)It is applied to the pressure of 8~30Mpa of clamping sample by medium, is given an account of Matter is gas-liquid mixture.
3. the more PROCESS COUPLING experimental rigs of the rock of Unconventional gas according to claim 1, gas, which is characterized in that institute State the first clamping device(1), the second clamping device(2), differential pressure pick-up(3)Outlet be equipped with gas-liquid separation recovering mechanism.
CN201810405516.2A 2018-04-29 2018-04-29 The more PROCESS COUPLING experimental rigs of rock, gas of Unconventional gas Pending CN108318666A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109681156A (en) * 2018-12-19 2019-04-26 大连理工大学 A kind of multiphase multi-fluid injected system of single pump control
CN109917105A (en) * 2019-03-14 2019-06-21 西南石油大学 A kind of non-equilibrium continuous failure test method of condensate gas for considering pressure decay rate and influencing
CN111720110A (en) * 2020-06-30 2020-09-29 重庆科技学院 Pressure automatic tracking control gas well production simulation yield control device and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109681156A (en) * 2018-12-19 2019-04-26 大连理工大学 A kind of multiphase multi-fluid injected system of single pump control
CN109681156B (en) * 2018-12-19 2021-01-05 大连理工大学 Multiphase multi-fluid injection system controlled by single pump
CN109917105A (en) * 2019-03-14 2019-06-21 西南石油大学 A kind of non-equilibrium continuous failure test method of condensate gas for considering pressure decay rate and influencing
CN111720110A (en) * 2020-06-30 2020-09-29 重庆科技学院 Pressure automatic tracking control gas well production simulation yield control device and method

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