CN109142418A - A kind of nuclear magnetic resonance experiment system and method under deep mining high-temperature and high-pressure conditions - Google Patents
A kind of nuclear magnetic resonance experiment system and method under deep mining high-temperature and high-pressure conditions Download PDFInfo
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- CN109142418A CN109142418A CN201811153052.7A CN201811153052A CN109142418A CN 109142418 A CN109142418 A CN 109142418A CN 201811153052 A CN201811153052 A CN 201811153052A CN 109142418 A CN109142418 A CN 109142418A
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- pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
- G01N24/081—Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
Abstract
A kind of nuclear magnetic resonance experiment system and method under deep mining high-temperature and high-pressure conditions, the composition of the invention patent include gas bottle, helium tank, vacuum pump, booster pump, with reference to tank, magnet, coal sample clamper, high-temperature high-pressure apparatus, control and data collection system, pressure gauge and valve and additional centrifuge etc..It is characterized in that: the gas bottle is connected by pressure reducing valve one with valve one and pressure gauge one, the helium tank is connected by pressure reducing valve two with valve two and pressure gauge two, the reference tank is connected by booster pump, delicate flow meter and valve five, valve six with coal sample clamper, described coal sample clamper one end is connected with high-temperature high-pressure apparatus, the oil storage cabin is connected by fluorocarbon oil pipeline valve with coil both ends, and the coil is connected by data line with control with data collection system.The invention patent is mainly used for the low-field nuclear magnetic resonance experimental study under deep mining coal body high-temperature and high-pressure conditions.
Description
Technical field
The invention patent relates to the nuclear magnetic resonance experiment system and methods under a kind of deep mining high-temperature and high-pressure conditions.
Background technique
In recent years, with the fast development of Examined effect and instrument and equipment, low-field nuclear magnetic resonance technology is exclusive by its
Favor of the technical advantage by numerous researchers, becomes the new technology in Study on Coal body opening crack.But with coal mine tunnelling footage
Increase, fire damp pressure and mine temperature all constantly increase, and traditional Nuclear Magnetic Resonance can not true accurate mould
Quasi- underground high temperature and high pressure environment, therefore seem extremely urgent to the improvement of existing experimental provision.The device can be with real simulation depth
Portion exploits the gas pressure and temperature of coal body, provides certain reference frame to study the hole fracture water flow of deep mining coal body.
Summary of the invention
The purpose of the invention patent be to provide a kind of nuclear magnetic resonance experiment system under deep mining high-temperature and high-pressure conditions and
Method.
Above-mentioned purpose is realized by following technical scheme:
1. the nuclear magnetic resonance experiment system and method under a kind of deep mining high-temperature and high-pressure conditions, the device mainly by gas bottle,
Helium tank, vacuum pump, booster pump, with reference to tank, magnet, high-temperature high-pressure apparatus, control and data collection system, pressure gauge and valve
And the components such as independent centrifuge composition.It is characterized in that: the gas bottle passes through pressure reducing valve one and valve one and pressure gauge
One is connected, and the helium tank is connected by pressure reducing valve two with valve two and pressure gauge two, the gas bottle with refer to tank it
Between be connected with booster pump and delicate flow meter and be connected with coal sample clamper by valve five, described coal sample clamper one end is same
When be connected with high-temperature high-pressure apparatus, the oil storage cabin is connected by fluorocarbon oil pipeline valve seven with coil both ends, the coil
It is connected by data line with control with data collection system.
2. according to the nuclear magnetic resonance experiment system and method under a kind of deep mining high-temperature and high-pressure conditions, feature
It is: pressure reducing valve one, valve one, the vacuum pump is installed on the pipeline between the gas bottle and the pressure gauge one
Pipeline on be connected with vacuum pumping valve, the control and data collection system include host, surely control unit, radio frequency unit, ladder
Spend unit.
3. according to the nuclear magnetic resonance experiment system and method under a kind of deep mining high-temperature and high-pressure conditions, feature
Be: the pressure gauge is used to detect the pressure of gas cylinder aerating, and the pressure reducing valve is used for the outlet pressure of regulating gas, described
Booster pump for increasing methane gas pressure, the defect of deep methane gas pressure, institute can not be done by making up previous experimental provision
The magnet stated provides stable magnetic field for experimentation, has fluorocarbon oil in the oil storage cabin, is clamped by pressing member to coal sample
Fluorocarbon oil is injected in device and applies confining pressure, and the application of temperature is to be heated by high-temperature high-pressure apparatus to fluorocarbon oil, is then given by clamper
Coal sample heating, temperature and pressure needed for the high-temperature high-pressure apparatus can accurately reflect experimental provision, the control
System is used to measure the T of coal sample with data collection system2The parameters such as spectrogram, entire pipeline and each valve of testing is using wear-resistant pipe
Line and high pressure sealing joint, the device junction are equipped with high pressure resistant combination mat and sealant tape.
The invention patent the utility model has the advantages that
1. the booster pump that the invention patent introduces can make gas pressure reach the gas pressure of deep mining coal body local environment
Power, delicate flow meter can monitor gas adsorption amount in real time, and the centrifuge can realize different centrifugations to full water coal sample
Power test.
2. the experiment flow of the invention patent: 1) coal sample produces processing: first by the coal cinder tapped be made Φ 50mm ×
The column coal sample of 100mm specification, and weigh to the coal sample made, original quality m1 is recorded, then coal sample is put into vacuum and is satisfied
With full water 12h is vacuumized in device, place into and impregnate 12h in distilled water, until coal sample quality is not further added by, obtain full water coal sample
Quality m2；2) air-tightness of check device: opening valve two, valve three, valve five, and helium is allowed to enter gas circuit and recording manometer
Two reading, it is after pressure stabilisation to be then shut off valve two, valve three, valve five, and observation pressure is not becoming within 8 hours
Change, illustrates that air-tightness is good；3) it vacuumizes: opening vacuum valve, valve five, valve six, reference tank and entire pipeline are vacuumized
About 30min；4) instrument calibration: opening computer and related software, selects corresponding sequence and required coil, opens RF switch,
Required coil is connected, oil sample is put into coil, sets the relevant parameter of instrument, according to instrumentation step to instrument
It is calibrated；5) it sets graticule: porosity standard specimen being sequentially placed into the center of coil, and measures corresponding signal strength, uses core
Magnetic resonance analysis software formulates a porosity graticule；6) it tests coal sample: coal sample to be measured is put into coal sample clamper and coil
Centre opens instrument software, selects CPMG sequence, and gas pressure and confining pressure needed for setting experiment select established hole
Porosity graticule tests the T of coal sample2Spectrogram, porosity, permeability, pore-size distribution etc..7) after the completion of one group of data, change watt
This pressure and confining pressure carry out the experiment of other groups.8) coal sample water of satisfying is subjected to centrifugation test, repeats 6-7 step and carries out different centrifugations
The hole crack characteristic test of coal sample under power.
3. the invention patent is by the nuclear magnetic resonance experiment system and method under deep mining high-temperature and high-pressure conditions,
The hole crack characteristic rule of deep fractures coal body can be accurately grasped in certain degree, be also deep mining release in future coal body
Experimental study infrastest data and reference value are provided.This experimental rig will be high to later more complicated deep mining
Infrastest parametric measurement under warm condition of high voltage provides safeguard.
Detailed description of the invention:
Attached drawing 1,2 is the structural schematic diagram of the invention patent.
1 gas bottle, 2 pressure reducing valves one, 3 valves one, 6 valves two, 28 valves three, 29 valves four, 13 valves six, 15 valves
Five, 19 valves seven, 4 pressure gauges one, 5 pressure gauges two, 7 pressure reducing valves two, 8 helium tanks, 9 vacuum valves, 10 vacuum pumps, 11 booster pumps,
12 delicate flow meters, 14 are with reference to tank, 16 magnets, 17 coal sample clampers, 18 coils, 20 oil storage cabins, 21 high-temperature high-pressure apparatus, 22 ladders
Spend unit, 23 radio frequency units, 24 steady control units, 25 hosts, 26 controls and data collection system, 27 exhaust outlets, 30 centrifuges.
Specific embodiment:
Embodiment 1:
1. nuclear magnetic resonance experiment system and method under a kind of deep mining high-temperature and high-pressure conditions, the device is mainly by gas bottle, helium
Gas cylinder, vacuum pump, booster pump, with reference to tank, magnet, high-temperature high-pressure apparatus, control and data collection system, pressure gauge and valve with
And the components such as independent centrifuge composition.It is characterized in that: the gas bottle passes through pressure reducing valve one and valve one and pressure gauge one
It is connected, the helium tank is connected by pressure reducing valve two with valve two and pressure gauge two, and the reference tank passes through booster pump, essence
Close flowmeter and valve five, valve six are connected with coal sample clamper, and described coal sample clamper one end is set with high temperature and pressure simultaneously
Standby to be connected, the oil storage cabin is connected by fluorocarbon oil pipeline valve with coil both ends, and the coil passes through data line and control
It is connected with data collection system.
Embodiment 2:
According to nuclear magnetic resonance experiment system and method, feature under a kind of deep mining high-temperature and high-pressure conditions described in embodiment 1
It is: pressure reducing valve one, valve one, the vacuum pump is installed on the pipeline between the gas bottle and the pressure gauge one
Pipeline on be connected with vacuum pumping valve, the control and data collection system include host, surely control unit, radio frequency unit, ladder
Spend unit.
Embodiment 3:
According to nuclear magnetic resonance experiment system and method, feature under a kind of deep mining high-temperature and high-pressure conditions described in embodiment 1
Be: the pressure gauge is used to detect the pressure of gas cylinder gas injection, and the pressure reducing valve is used for the outlet pressure of regulating gas, described
Booster pump for increasing methane gas pressure, the defect of deep methane gas pressure, institute can not be done by making up previous experimental provision
The magnet stated provides stable magnetic field for experimentation, has fluorocarbon oil in the oil storage cabin, is clamped by pressing member to coal sample
Fluorocarbon oil is injected in device and applies confining pressure, and the application of temperature is to be heated by high-temperature high-pressure apparatus to fluorocarbon oil, is then given by clamper
Coal sample heating, temperature and confining pressure needed for the high-temperature high-pressure apparatus can accurately reflect experimental provision, the control
System is used to measure the T of coal sample with data collection system2The parameters such as spectrogram, entire pipeline and each valve of testing is using wear-resistant pipe
Line and high pressure sealing joint, the device junction are equipped with high pressure resistant combination mat and sealant tape.
Claims (3)
1. the nuclear magnetic resonance experiment system and method under a kind of deep mining high-temperature and high-pressure conditions, the device is mainly by gas bottle
(1), helium tank (8), vacuum pump (10), booster pump (11), with reference to tank (14), magnet (16), high-temperature high-pressure apparatus (21), control
It is formed with the components such as data collection system (26), pressure gauge and valve and independent centrifuge (30), it is characterized in that: described
Gas bottle (1) is connected by pressure reducing valve one (2) with valve one (3) and pressure gauge one (4), and the helium tank (8) passes through decompression
Valve two (7) is connected with valve two (6) and pressure gauge two (5), and the reference tank (14) passes through booster pump (11) and delicate flow
Meter (12) is simultaneously connected by valve five (15) valve six (13) with coal sample clamper (17), and described coal sample clamper one end is simultaneously
It is connected with high-temperature high-pressure apparatus, the oil storage cabin (20) is connected by fluorocarbon oil pipeline valve seven (19) with coil (18) both ends,
The coil is connected by data line with control with data collection system.
2. the nuclear magnetic resonance experiment system and method under a kind of deep mining high-temperature and high-pressure conditions according to claim 1,
It is characterized in that: being equipped with pressure reducing valve one (2), valve on pipeline between the gas bottle (1) and the pressure gauge one (4)
One (3) are connected with vacuum valve (9) on the pipeline of the vacuum pump (10), and the control and data collection system (26) are wrapped
It includes host (25), surely control unit (24), radio frequency unit (23), Gradient Unit (22).
3. the nuclear magnetic resonance experiment system and method under a kind of deep mining high-temperature and high-pressure conditions according to claim 1,
It is characterized in that: the pressure gauge is used to detect the pressure of gas cylinder aerating, the pressure reducing valve is used for the outlet pressure of regulating gas
Power, for the booster pump (11) for increasing gas pressure, the defect of deep gas pressure can not be done by making up previous experimental provision,
The magnet (16) provides stable magnetic field for experimentation, has fluorocarbon oil in the oil storage cabin (20), passes through pressing member
Apply confining pressure to fluorocarbon oil is injected in coal sample clamper, the application of temperature is to heat by high-temperature high-pressure apparatus (21) to fluorocarbon oil, so
Afterwards by clamper give coal sample heating, temperature needed for the high-temperature high-pressure apparatus can accurately reflect experimental provision and
Confining pressure, the control and data collection system (26) are for measuring the T of coal sample2The parameters such as spectrogram, it is entire test pipeline and
Each valve uses wear-resistant pipeline and high pressure sealing joint, and the device junction is equipped with high pressure resistant combination mat and sealant
Band.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811153052.7A CN109142418A (en) | 2018-09-30 | 2018-09-30 | A kind of nuclear magnetic resonance experiment system and method under deep mining high-temperature and high-pressure conditions |
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| CN201811153052.7A CN109142418A (en) | 2018-09-30 | 2018-09-30 | A kind of nuclear magnetic resonance experiment system and method under deep mining high-temperature and high-pressure conditions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213345A (en) * | 2020-09-18 | 2021-01-12 | 中国石油大学(华东) | Nuclear magnetic resonance system and method for simulating high-temperature and high-pressure conditions |
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| CN112213345A (en) * | 2020-09-18 | 2021-01-12 | 中国石油大学(华东) | Nuclear magnetic resonance system and method for simulating high-temperature and high-pressure conditions |
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