CN109540762A - A kind of hydrate sediment permeability test device - Google Patents
A kind of hydrate sediment permeability test device Download PDFInfo
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- CN109540762A CN109540762A CN201811340813.XA CN201811340813A CN109540762A CN 109540762 A CN109540762 A CN 109540762A CN 201811340813 A CN201811340813 A CN 201811340813A CN 109540762 A CN109540762 A CN 109540762A
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- 230000035699 permeability Effects 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 239000013049 sediment Substances 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000013480 data collection Methods 0.000 claims abstract description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 44
- 230000005540 biological transmission Effects 0.000 claims description 36
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 230000008878 coupling Effects 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 19
- 238000005859 coupling reaction Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000008676 import Effects 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 40
- 238000013461 design Methods 0.000 abstract description 5
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 31
- 150000004677 hydrates Chemical class 0.000 description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 9
- 238000007789 sealing Methods 0.000 description 5
- 239000001307 helium Substances 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011234 economic evaluation Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- NUXZAAJDCYMILL-UHFFFAOYSA-K trichlorolanthanum;hydrate Chemical compound O.Cl[La](Cl)Cl NUXZAAJDCYMILL-UHFFFAOYSA-K 0.000 description 1
Classifications
-
- 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
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of hydrate sediment permeability test devices, including reaction kettle, the constant pressure gas handling system being connected with reaction kettle, water inlet system, outlet pressure control system, confining pressure loading system, crustal stress loading system, data collection system, pumped vacuum systems and temperature control system；Constant pressure gas handling system, water inlet system, outlet pressure control system, confining pressure loading system, crustal stress loading system, data collection system, pumped vacuum systems and temperature control system are connected with computer.The present invention improves reliability, resistance to pressure, observability and the economy of natural gas hydrate permeability test device, that is, is easier to operate to, the variation in higher design pressure and Observable experimentation.
Description
Technical field
A kind of hydrate deposition the present invention relates to permeability test device, under the conditions of especially a kind of three axis of high pressure low temperature
Object permeability test device.
Background technique
Gas hydrates are the solid chemical compounds that a kind of shape is similar to ice, it be by low-molecular-weight gas (mainly
Hydrocarbon molecules, such as methane, ethane, there are also the micro-molecular gas such as carbon dioxide, hydrogen sulfide) and hydrone cryogenic high pressure item
The compound of the cage structure constituted under part.Based on the gas hydrates mainly formed by methane gas in nature,
It is general to be known as combustible ice again and because its shape is similar to ice.Methane hydrate is mainly stored at seabed deep-water slope ring
Border and land permafrost area.Gas hydrates can release 164~180m in normal conditions3Methane gas and
0.87m3Water.According to conservative estimation, 21 × 10m of content of gas hydrates in nature3, this is almost known on the earth
Twice of fossil energy, it is considered to be the ideal alternative energy source of 21 century fossil energy.
2007,2015 and 2016 China Geological Survey Bureau implement 3 hydrate probe borings in Shenhu sea area in succession,
High saturation diffused hydrate is obtained in hyposmosis clayed silt reservoir, has drawn a circle to approve 10 high-grade ore bodies, hydrate
Thickness degree maximum reaches 80m, and maximum saturation is up to 75%.In May, 2017, China Geological Survey Bureau carry out in South Sea Shenhu sea area
Gas hydrates runin for the first time is adopted, and continuous gas testing is lighted a fire 60 days, adds up to produce 30.9 ten thousand m3 of gas, average daily gas 5151m3, first
Alkane content is up to 99.5%.Meanwhile China National Offshore Oil Corporation (CNOOC) uses " solid state fluidizing production technique " in South Sea Li Gulf sea area
Also achieve the exploitation to the non-diagenesis gas hydrates of deep water shallow-layer.With constantly succeeding for pilot production, natural gas hydration
The commercial-scale operation of object has also been put into the development plan of Main Developed Countries, such as Japan, the U.S..
However, gas hydrates exploitation potential assessment, exploitation Economic Evaluation, exploitation safety evaluation and production practice choosing
The clear understanding all relied on to gas hydrates geologic characteristics such as select, and geologic characteristics mainly include reservoir temperature
Degree, pressure, saturation degree, porosity, permeability etc..Wherein, temperature, pressure etc. can get detailed data in the exploration such as drilling well,
Live permeability determination is complex, and disturbing factor is more, it is difficult to obtain accurately and effectively Permeability Parameters, while about containing
The permeability research of hydrate formation is also less.In addition, before gas hydrates carry out business exploitation, it is necessary to deeply thorough
The geologic characteristics for understanding to bottom gas hydrates include the changing rule of permeability and permeability in recovery process,
Hydrate reservoir damage during exploitation and the influence to seafloor structure can correctly be evaluated, thus to greatest extent
Reduction hydrate blindly exploitation and have serious consequences.
In recent years, there are many research institutions all to have studied the generated in-situ technology of hydrate both at home and abroad, and design and produce
The device of hydrate sediment mechanical property test, wherein having many is all the equipment for measuring hydrate sediment permeability.Water
The core component for closing the permeability device in situ of sediment is reaction kettle, and reaction kettle can realize the conjunction of hydrate in deposit
At, shearing and decompose.Current reaction kettle can realize bottom inflow or top air inlet, and some also achieves bottom and top simultaneously
Air inlet, but top and bottom mostly use pressure hose to connect greatly, overall pressure resistance is not high, and is easy to reveal, and slightly operates not
When that will make experiment, all that has been achieved is spoiled, causes the experimental facilities design pressure reported at present very high, but few high pressures (are greater than
Experimental data report under 10MPa).Pressure hose connection is easy to damage, and equipment need to be repaired often, and fills sample trouble, operation
Need in strict accordance with operation article, sometimes can't one man operation, one man operation it is difficult to ensure that samples vertical install.Small part reaction
Kettle inner end cap uses metal capillary to connect between pedestal, and capillary solves pressure resistance and sealing problem, but due to using
Deposit, it is easy to cause capillary blockage.In addition to this, the equipment reported at present is all closed reaction chamber, can not be observed
The variation of hydrate sediment into experimentation.
Summary of the invention
The purpose of the present invention is to provide a kind of hydrate sediment permeability test devices, and gas hydrates can be improved
Reliability, resistance to pressure, observability and the economy of permeability test device.
To achieve the above object, the technical scheme is that
A kind of hydrate sediment permeability test device, including reaction kettle, the constant pressure gas handling system being connected with reaction kettle,
Water inlet system, outlet pressure control system, confining pressure loading system, crustal stress loading system, data collection system, pumped vacuum systems
And temperature control system；Constant pressure gas handling system, water inlet system, outlet pressure control system, confining pressure loading system, crustal stress load system
System, data collection system, pumped vacuum systems and temperature control system are connected with computer；
The reaction kettle includes outer framework, messenger wire motor, guide rod, shell, pedestal, pulley and messenger wire, and shell is top
The cylinder of face closure, bottom surface be equipped with lower flange, and by lower flange be fixedly connected with base top surface with formed one it is closed instead
Kettle inner cavity is answered, outer framework includes bottom plate, two upright bars being arranged at intervals on bottom plate, the lower cross being connected in the middle part of two upright bars
Bar and the cross tube being connected at the top of two upright bars, outer casing top surface are equipped with upper flange, and guide rod is two, are separately positioned on
The two sides of shell, the lower end of guide rod and the bottom plate of outer framework connect, and upper end is after the upper flange of shell and under outer framework
Cross bar connection, messenger wire motor are mounted on the cross tube of outer framework, and the lower end of messenger wire and the upper flange of shell connect, upper end connection
In the shaft of messenger wire motor, messenger wire motor drives messenger wire folding and unfolding to drive shell to move up and down along guide rod, and pulley is mounted on
The bottom surface of pedestal, pedestal are placed on the bottom plate of outer framework by pulley；
The crustal stress loading system includes screw motor, screw rod, first shaft coupling and power transmission axle, screw motor peace
On the sheer pole of outer framework, the upper end of screw rod is connect with screw motor, and lower end passes through first shaft coupling and power transmission axle
Upper end connection, the lower end of power transmission axle are extend into reaction kettle inner cavity after passing through outer casing top surface；
The top surface of the pedestal is equipped with upward boss, and the lower end surface of the power transmission axle is equipped with downward boss, in institute
It states and is provided with transparent rubber set in reaction kettle inner cavity, the both ends of transparent rubber set are respectively sleeved at the boss and power transmission axle of pedestal
Boss on, constitute the sample cavity for placing sample, be equipped with the inlet and outlet being connected to sample cavity, shell in pedestal and power transmission axle
Side offers transparent window.
Further, the outlet pressure control system includes booster pump, outlet surge tank, third pressure gauge and the 5th
Pressure reducing valve, outlet surge tank are connect with booster pump, the booster pump successively disengaging after third pressure gauge, the 5th pressure reducing valve with pedestal
Mouth connection.
Further, the booster pump includes motor, gear, band tooth swivel nut, afterburner screw, second shaft coupling, piston
And cylinder body, gear are mounted on the output shaft of motor, band tooth swivel nut is meshed with gear, and afterburner screw is spirally connected with tooth swivel nut,
Afterburner screw is connect by second shaft coupling with the piston being set on cylinder body, is additionally provided on cylinder body for detecting piston displacement
Second displacement sensor, the pressure sensor for detecting cylinder pressure, connect with third pressure gauge gas-liquid inlet and outlet, with
Outlet buffers tank connected surge tank interface.
Further, the pumped vacuum systems includes vacuum pump and the second pressure reducing valve, vacuum pump through the second pressure reducing valve with
The inlet and outlet of power transmission axle are connected to.
Further, the constant pressure gas handling system includes gas cylinder, the 6th pressure reducing valve, first pressure gauge, third pressure reducing valve,
Constant pressure pump and import surge tank, import surge tank are connected on constant pressure pump, and constant pressure pump is connected to the 6th pressure reducing valve and first pressure
Between table, gas cylinder is successively connected to after the 6th pressure reducing valve, first pressure gauge, third pressure reducing valve with the inlet and outlet of power transmission axle, also
Including an inlet outlet pressure differential sensor, one end is connected on the pipeline between third pressure reducing valve and power transmission axle inlet and outlet,
The other end is connected on the phase pipeline between the 5th pressure reducing valve and pedestal inlet and outlet.
Further, the confining pressure loading system include confining pressure liquid loading device, the first pressure reducing valve, electric booster pump,
Second pressure gauge and the 4th pressure reducing valve, the side of shell offer inlet and outlet, confining pressure liquid loading device by the first pressure reducing valve with
The inlet and outlet of shell are connected to, and electric booster pump is successively connected to through second pressure gauge, the 4th pressure reducing valve with the inlet and outlet of shell.
Further, the data collection system includes the data acquisition board connecting with computer, is mounted on shell top
Portion and the temperature sensor and confining pressure sensor that extend in the reaction kettle inner cavity, the crustal stress being mounted in first shaft coupling
Sensor, the first displacement sensor being mounted between sheer pole and shell, temperature sensor, confining pressure sensor, crustal stress pass
Sensor and the first displacement sensor are connect with data acquisition board.
Further, the temperature control system is air bath.
Further, metal gasket, metal screen and filter paper are also set up in the sample cavity, sample both ends difference is successively
By being connected after filter paper, metal screen, metal gasket with the boss of the boss of pedestal, power transmission axle.
Compared with the prior art, the invention has the following advantages:
1, it is gone up and down, is avoided that during dress sample to sample containing hydrate sediment by motor control shell and power transmission axle
Disturbance, guarantee with one heart to avoiding rubber sleeve from being broken, while labour can be saved, improve working efficiency.
2, the design pressure range of reaction kettle is 0~30MPa, the design temperature range of system operating temperatures and reaction kettle
It is -30 DEG C~50 DEG C, it can be with the temperature of simulated sea bottom and the gas hydrates in frozen soil region, pressure condition.
3, reaction kettle surrounds sample with transparent window and using transparent rubber set, it can be observed that sample in experimentation
The variation that product occur.
Detailed description of the invention
Fig. 1 is the working principle diagram of permeability test device of the present invention；
Fig. 2 is the structural schematic diagram of permeability test device of the present invention, and reaction kettle is to face in figure；
Fig. 3 is the side view of reaction kettle of the present invention；
Fig. 4 is the structural schematic diagram of booster pump of the present invention；
Description of symbols: 1- computer；2- data acquisition board；3- outer framework；4- messenger wire motor；5- screw motor；6-
Screw rod；7- temperature sensor；8- confining pressure sensor；The first displacement sensor of 9-；10- confining pressure liquid loading device；11- guide rod；
12- shell；13- pedestal；14- flanged joint screw；15- sample；16- pulley；17- sealing ring；18- electric machine support；19- is hung
Line；20- idler wheel；21- first shaft coupling；22- crustal stress sensor；23- vacuum pump；24 booster pumps；25- electric booster pump；26-
Constant pressure pump；27- gas cylinder；28- import surge tank；29- exports surge tank；30- inlet outlet pressure differential sensor；31- power transmission axle；
32- air bath；33- metal gasket；34- metal screen；35- filter paper；36- metal sleeve；37- transparent rubber set；38- is fixed
Folder；39- transparent window；40- motor；41- gear；42- afterburner screw；43- second shaft coupling；44- second displacement sensor；
45- pressure sensor；The 5th pressure gauge of 46-；47- gas-liquid inlet and outlet；48- surge tank interface；The first pressure reducing valve of F1-；F2- second
Pressure reducing valve；F3- third pressure reducing valve；The 4th pressure reducing valve of F4-；The 5th pressure reducing valve of F5-；The 6th pressure reducing valve of F6-；P1- first pressure gauge；
P2- second pressure gauge；P3- third pressure gauge.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
As shown in Figures 1 to 4, a kind of hydrate sediment permeability test device, including reaction kettle, be connected with reaction kettle
Constant pressure gas handling system, water inlet system, outlet pressure control system, confining pressure loading system, crustal stress loading system, data acquisition
System, pumped vacuum systems and temperature control system；Constant pressure gas handling system, water inlet system, outlet pressure control system, confining pressure load system
System, crustal stress loading system, data collection system, pumped vacuum systems and temperature control system are connected with computer 1.
Include outer framework 3, messenger wire motor 4, guide rod 11, shell 12, pedestal 13, slide with Fig. 3, reaction kettle referring to figure 2.
Wheel 16 and messenger wire 19.Shell 12 is top surface closing, the open cylinder in bottom surface, and 12 bottom surface of shell is equipped with lower flange, lower flange and bottom
13 top surfaces of seat are fixedly connected by flanged joint screw 14, sealing ring 17 to form a closed reaction kettle inner cavity.Outer framework 3 wraps
Include bottom plate, two upright bars being arranged at intervals on bottom plate, the sheer pole being connected in the middle part of two upright bars and be connected to two it is vertical
Cross tube at the top of bar.12 top surface of shell is equipped with upper flange, and guide rod 11 is two, is separately positioned on the two sides of shell 12, leads
It is connect to the lower end of bar 11 with the bottom plate of outer framework 3, upper end connects after the upper flange of shell 12 with the sheer pole of outer framework 3
It connects, messenger wire motor 4 is mounted on the cross tube of outer framework 3, and the lower end of messenger wire 19 is connect with the upper flange of shell 12, upper end connection
In the shaft of messenger wire motor 4, in the present embodiment, messenger wire 19 is two, is connected to the both ends of 12 upper flange of shell, and divide
It is not oriented to by the idler wheel 20 being mounted on 3 sheer pole of outer framework.Messenger wire 19 is realized by the matched roll shaft of messenger wire motor 4
Folding and unfolding, thus draw shell 12 along guide rod 11 move up and down, to open or close reaction kettle.Meanwhile pulley 16 is mounted on
The bottom surface of pedestal 13, pedestal 13 is placed on the bottom plate of outer framework 3 by pulley 16, so as to drag along bottom plate, with convenient
Load sample 15.
Crustal stress loading system includes screw motor 5, screw rod 6, first shaft coupling 21 and power transmission axle 31.Screw motor 5
It is mounted on by electric machine support 18 on the sheer pole of outer framework 3, the upper end of screw rod 6 is connect with screw motor 5, and lower end passes through first
Shaft coupling 21 is connect with the upper end of power transmission axle 31, and the lower end of power transmission axle 31 is extend into reaction kettle after passing through 12 top surface of shell
In chamber, setting sealing ring is needed between 12 top surface of power transmission axle 31 and shell, to guarantee the airtightness of reaction kettle inner cavity.Screw motor
5 for driving screw rod 6 to move up and down, and is moved up and down by 21 drive transmission axle 31 of first shaft coupling, thus apply crustal stress,
Its specific movement mechanism is the same as following booster pump 24.
The top surface of pedestal 13 is equipped with upward boss, and the lower end surface of power transmission axle 31 is equipped with downward boss, in reaction kettle
Transparent rubber set 37 is provided in inner cavity, the both ends of transparent rubber set 37 are respectively sleeved at the boss and power transmission axle 31 of pedestal 13
Boss on, and available elastic tape tightens, and constitutes the sample cavity for placing sample 15, be equipped on pedestal 13 and power transmission axle 31 with
The inlet and outlet of sample cavity connection, 12 side of shell offer transparent window 39, can by transparent window 39 and transparent rubber set 37
To observe the variation of the generation of sample 15 in experimentation.Metal gasket 33, metal screen 34 and filter are additionally provided in sample cavity
Paper 35,15 both ends of sample pass after passing sequentially through filter paper 35, metal screen 34, metal gasket 33 respectively with the boss of pedestal 13, power
The boss for passing axis 31 is connected.
Outlet pressure control system includes booster pump 24, exports surge tank 29, third pressure gauge P3 and the 5th pressure reducing valve F5,
Outlet surge tank 29 connect with booster pump 24, booster pump 24 successively after third pressure gauge P3, the 5th pressure reducing valve F5 with pedestal 13
Inlet and outlet connection, to control the outlet pressure of sample cavity.
Referring to figure 4., booster pump 24 includes motor 40, gear 41, band tooth swivel nut 49, afterburner screw 42, second shaft coupling
43, piston 50 and cylinder body 51, gear 41 are mounted on the output shaft of motor 40, and band tooth swivel nut 49 is meshed with gear 41, are reinforced
Screw rod 42 is spirally connected with tooth swivel nut 49, and 42 upper end of afterburner screw passes through second shaft coupling 43 and the piston 50 being set on cylinder body 51
Connection.Band tooth swivel nut 49 is configured to rotate, and cannot move axially along afterburner screw 42,42 lower end sliding sleeve of afterburner screw
It is located on positioning seat, as support, motor 40 is rotated with moving gear 41, and then gear 41 drives band tooth swivel nut 49 to rotate, band tooth
Swivel nut 49 drives afterburner screw 42 to rotate, to realize moving up and down for afterburner screw 42, afterburner screw 42 passes through shaft coupling 43
Band piston 50 moves up and down, and realizes pressurization.The second displacement sensing for detecting the displacement of piston 50 is additionally provided on cylinder body 51
Device 44, the pressure sensor 45 for detecting pressure in cylinder body 51, the gas-liquid connecting with third pressure gauge P3 are imported and exported 47 and are gone out
The surge tank interface 48 that mouth surge tank 29 connects.
Pumped vacuum systems includes vacuum pump 23 and the second pressure reducing valve F2, vacuum pump 23 through the second pressure reducing valve F2 by pipeline with
The inlet and outlet of power transmission axle 31 are connected to, for taking the air in sample cavity away before lanthanum chloride hydrate.
Constant pressure gas handling system includes gas cylinder 27, the 6th pressure reducing valve F6, first pressure gauge P1, third pressure reducing valve F3, constant pressure pump
26 and import surge tank 28.Import surge tank 28 is connected on constant pressure pump 26, and constant pressure pump 26 is connected to the 6th pressure reducing valve F6 and
Between one pressure gauge P1, gas cylinder 27 successively after the 6th pressure reducing valve F6, first pressure gauge P1, third pressure reducing valve F3 with power transmission axle
31 inlet and outlet connection.An inlet outlet pressure differential sensor 30 is equipped between outlet pressure control system and constant pressure gas handling system,
One end is connected on the pipeline between third pressure reducing valve F3 and the inlet and outlet of power transmission axle 31, and the other end is connected to the 5th pressure reducing valve
On phase pipeline between F5 and the inlet and outlet of pedestal 13.
Confining pressure loading system includes confining pressure liquid loading device 10, the first pressure reducing valve F1, electric booster pump 25, second pressure gauge
P2 and the 4th pressure reducing valve F4.The side of shell 12 offers inlet and outlet, confining pressure liquid loading device 10 by the first pressure reducing valve F1 with
The inlet and outlet of shell 12 are connected to, and confining pressure liquid can be injected into pressure chamber.Electric booster pump 25 is successively through second pressure gauge P2, the 4th
Pressure reducing valve F4 is connected to the inlet and outlet of shell 12, for adjusting reaction kettle confining pressure.
Data collection system includes the data acquisition board 2 connecting with computer 1, is mounted on 12 top of shell and extends to anti-
Answer temperature sensor 7 and confining pressure sensor 8 in kettle inner cavity, the crustal stress sensor 22 being mounted in first shaft coupling 21, with
And it is mounted on the first displacement sensor 9 between sheer pole and shell, temperature sensor 7, the displacement of confining pressure sensor 8, first pass
Sensor 9 and crustal stress sensor 22 are connect with data acquisition board 2.
Temperature control system is air bath 32, and entire reaction kettle is placed in one, and realizes the low temperature environment that hydrate generates.
In the present embodiment, the main process of permeability test includes:
(1) assemble and check the air-tightness of equipment: by pumped vacuum systems, constant pressure gas handling system, confining pressure loading system, answer
After force loading system, outlet pressure control system, data collection system and reaction kettle assemble, leaves flange and be not connected with, even
Corresponding drainage tracheae is connected, tightens transparent 37 lower end of rubber case with elastic tape, it is made to be close to the boss of pedestal 13 (wherein,
Transparent rubber case 37 can be hollow tubular or square structure), metal sleeve 36 is put on, fixing clamp 38 is reused and fixes, open
Begin dress sample 15, after waiting samples 15 to install, removes fixing clamp 38 and metal sleeve 36, is closing and sealing off reaction kettle inner cavity, with enclosing
Press loading system that confining pressure is increased to 5MPa, temperature room temperature injects helium into sample cavity by constant pressure gas handling system, uses dish washing liquid
Water is along seam detection air-tightness.Air-tightness well enters in next step.Calibration sample 15 can be used polytetrafluoroethylene (PTFE) or aluminium or lead or
The lesser elastic material of other elasticity modulus, centre perforate and guarantee that the inlet and outlet of power transmission axle pass through calibration sample and pedestal
Inlet and outlet communicate, the elasticity modulus of calibration sample need to be much smaller than stainless steel.
(2) it loads sample: laying down helium and confining pressure liquid, open the flanged joint screw connected between shell 12 and pedestal 13
14, it is raised above shell 12, pedestal 13 is pulled out.Same step (1) equally, by sediment sample 15 is fixed on 31 He of power transmission axle
Between pedestal 13, metal gasket 33, metal screen 34 and filter paper 35 are spread in the bottom and top of sample 15 respectively.It is pricked with elastic tape
Tight transparent rubber case 37, makes it be close to the boss of the boss of pedestal 13 and power transmission axle 31.
(3) hydrate generates: shell 12 being kept vertically being closed and shell 12 and pedestal 13 are passed through flanged joint again
Screw 14 is fixed, injects confining pressure liquid.Confining pressure in reaction kettle is gradually pressurized to required numerical value using confining pressure loading system, passes through perseverance
Pressure gas handling system injects methane gas into sample cavity, injects deionized water into sample cavity by water inlet system, passes through air bath
32 are gradually down to temperature the synthesis temperature of gas hydrates, synthesis of natural gas hydrate.
(4) starting constant pressure pump 26 injects helium, the inlet and outlet of pedestal 13 is connected to outlet pressure control system, and set
Constant inlet and outlet pressure, detection gas flow.
(5) crustal stress and confining pressure are adjusted to laboratory reference value, when out by crustal stress loading system and confining pressure loading system
After atmospheric pressure is stablized, detects flow velocity and record.
(6) after measuring, reducing makes hydrate decomposed under outlet pressure to hydrate phase balance pressure, then
Outlet pressure is risen into certain numerical value, first time decomposition of hydrate terminates.
(7) it is again started up constant pressure pump 26 and injects helium, and set constant inlet and outlet pressure, detection gas flow.
(8) it after outlet pressure velocity-stabilization, detects flow velocity and records.
(9) after measuring, reducing makes hydrate decomposed under outlet pressure to hydrate phase balance pressure, then
Outlet pressure is risen into certain numerical value, second of decomposition of hydrate terminates.
(10) repeating above step 7-9 can be completed in hydrate pressure reduction, and three axis of hydrate sediment, which load, to be seeped
Saturating rate test.
Simply to illustrate that technical concepts and features of the invention, its purpose is allows in the art above-described embodiment
Those of ordinary skill cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent changes or modifications that the essence of content according to the present invention is made, should be covered by the scope of protection of the present invention.
Claims (9)
1. a kind of hydrate sediment permeability test device, it is characterised in that: including reaction kettle, the constant pressure being connected with reaction kettle
Gas handling system, water inlet system, outlet pressure control system, confining pressure loading system, crustal stress loading system, data collection system,
Pumped vacuum systems and temperature control system；Constant pressure gas handling system, water inlet system, outlet pressure control system, confining pressure loading system, answer
Force loading system, data collection system, pumped vacuum systems and temperature control system are connected with computer (1)；
The reaction kettle includes outer framework (3), messenger wire motor (4), guide rod (11), shell (12), pedestal (13), pulley
(16) and messenger wire (19), shell (12) are the closed cylinder in top surface, and bottom surface is equipped with lower flange, and passes through lower flange and pedestal
(13) top surface is fixedly connected to form a closed reaction kettle inner cavity, and outer framework (3) includes bottom plate, is arranged at intervals on bottom plate
Two upright bars, the sheer pole being connected in the middle part of two upright bars and the cross tube being connected at the top of two upright bars, shell (12) top
Face is equipped with upper flange, and guide rod (11) is two, is separately positioned on the two sides of shell (12), the lower end of guide rod (11) and outline border
The bottom plate of frame (3) connects, and upper end is connect after the upper flange of shell (12) with the sheer pole of outer framework (3), messenger wire motor (4)
It is mounted on the cross tube of outer framework (3), the lower end of messenger wire (19) is connect with the upper flange of shell (12), and upper end is connected to messenger wire
In the shaft of motor (4), messenger wire motor (4) drives messenger wire (19) folding and unfolding to drive shell (12) to transport up and down along guide rod (11)
Dynamic, pulley (16) is mounted on the bottom surface of pedestal (13), and pedestal (13) is placed on the bottom plate of outer framework (3) by pulley (16)；
The crustal stress loading system includes screw motor (5), screw rod (6), first shaft coupling (21) and power transmission axle (31),
Screw motor (5) is mounted on the sheer pole of outer framework (3), and the upper end of screw rod (6) is connect with screw motor (5), and lower end passes through
First shaft coupling (21) is connect with the upper end of power transmission axle (31), and the lower end of power transmission axle (31) passes through shell (12) top surface and extendes back
Enter into reaction kettle inner cavity；
The top surface of the pedestal (13) is equipped with upward boss, and the lower end surface of the power transmission axle (31) is equipped with downward boss,
It is provided in the reaction kettle inner cavity transparent rubber set (37), the both ends of transparent rubber set (37) are respectively sleeved at pedestal (13)
Boss and power transmission axle (31) boss on, constitute the sample cavity for placing sample (15), pedestal (13) and power transmission axle (31)
On be equipped with the inlet and outlet being connected to sample cavity, shell (12) side offers transparent window (39).
2. a kind of hydrate sediment permeability test device according to claim 1, it is characterised in that: the outlet
Control pressurer system includes booster pump (24), outlet surge tank (29), third pressure gauge (P3) and the 5th pressure reducing valve (F5), outlet
Surge tank (29) is connect with booster pump (24), booster pump (24) successively after third pressure gauge (P3), the 5th pressure reducing valve (F5) with
The inlet and outlet of pedestal (13) are connected to.
3. a kind of hydrate sediment permeability test device according to claim 2, it is characterised in that: the pressurization
Pump (24) includes motor (40), gear (41), band tooth swivel nut (49), afterburner screw (42), second shaft coupling (43), piston (50)
With cylinder body (51), gear (41) is mounted on the output shaft of motor (40), and band tooth swivel nut (49) is meshed with gear (41), is reinforced
Screw rod (42) is spirally connected with tooth swivel nut (49), and afterburner screw (42) is by second shaft coupling (43) and is set on cylinder body (51)
Piston (50) connection is additionally provided with the second displacement sensor (44) for detecting piston (50) displacement on cylinder body (51), is used for
The pressure sensor (45) for detecting cylinder body (51) pressure, the gas-liquid being connect with third pressure gauge (P3) inlet and outlet (47) and outlet
The surge tank interface (48) of surge tank (29) connection.
4. a kind of hydrate sediment permeability test device according to claim 1, it is characterised in that: the pumping is true
Empty set system includes vacuum pump (23) and the second pressure reducing valve (F2), and vacuum pump (23) is through the second pressure reducing valve (F2) and power transmission axle (31)
Inlet and outlet connection.
5. a kind of hydrate sediment permeability test device according to claim 2, it is characterised in that: the constant pressure
Gas handling system includes gas cylinder (27), the 6th pressure reducing valve (F6), first pressure gauge (P1), third pressure reducing valve (F3), constant pressure pump (26)
With import surge tank (28), import surge tank (28) is connected on constant pressure pump (26), and constant pressure pump (26) is connected to the 6th pressure reducing valve
(F6) between first pressure gauge (P1), gas cylinder (27) is successively depressurized through the 6th pressure reducing valve (F6), first pressure gauge (P1), third
Valve (F3) is connected to the inlet and outlet of power transmission axle (31) afterwards, further includes an inlet outlet pressure differential sensor (30), one end connection
Third pressure reducing valve (F3) and power transmission axle (31) inlet and outlet between pipeline on, the other end be connected to the 5th pressure reducing valve (F5) with
On phase pipeline between pedestal (13) inlet and outlet.
6. a kind of hydrate sediment permeability test device according to claim 1, it is characterised in that: the confining pressure
Loading system include confining pressure liquid loading device (10), the first pressure reducing valve (F1), electric booster pump (25), second pressure gauge (P2) and
4th pressure reducing valve (F4), the side of shell (12) offer inlet and outlet, and confining pressure liquid loading device (10) passes through the first pressure reducing valve
(F1) it is connected to the inlet and outlet of shell (12), electric booster pump (25) is successively through second pressure gauge (P2), the 4th pressure reducing valve (F4)
It is connected to the inlet and outlet of shell (12).
7. a kind of hydrate sediment permeability test device according to claim 1, it is characterised in that: the data
Acquisition system includes the data acquisition board (2) connecting with computer (1), is mounted at the top of shell (12) and extends to the reaction
Temperature sensor (7) and confining pressure sensor (8) in kettle inner cavity, the crustal stress sensor being mounted on first shaft coupling (21)
(22) and the first displacement sensor (9) for being mounted between sheer pole and shell, temperature sensor (7), confining pressure sensor
(8), the first displacement sensor (9) and crustal stress sensor (22) are connect with data acquisition board (2).
8. a kind of hydrate sediment permeability test device according to claim 1, it is characterised in that: the temperature
Control system is air bath (32).
9. a kind of hydrate sediment permeability test device according to claim 1, it is characterised in that: the sample
Metal gasket (33), metal screen (34) and filter paper (35) are also set up in chamber, sample (15) both ends pass sequentially through filter paper respectively
(35), metal screen (34), metal gasket (33) are connected with the boss of the boss of pedestal (13), power transmission axle (31) afterwards.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340813.XA CN109540762B (en) | 2018-11-12 | 2018-11-12 | Hydrate deposit permeability testing device |
| PCT/CN2018/122477 WO2020098071A1 (en) | 2018-11-12 | 2018-12-20 | Permeability test device for hydrate sediments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340813.XA CN109540762B (en) | 2018-11-12 | 2018-11-12 | Hydrate deposit permeability testing device |
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| Publication Number | Publication Date |
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| CN109540762A true CN109540762A (en) | 2019-03-29 |
| CN109540762B CN109540762B (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811340813.XA Active CN109540762B (en) | 2018-11-12 | 2018-11-12 | Hydrate deposit permeability testing device |
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| Country | Link |
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| CN (1) | CN109540762B (en) |
| WO (1) | WO2020098071A1 (en) |
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| CN109827829A (en) * | 2019-04-09 | 2019-05-31 | 大连理工大学 | A kind of preparation of cycle type hydrate sediment sample and dynamic characteristic test apparatus |
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| CN111829933A (en) * | 2020-07-21 | 2020-10-27 | 中国矿业大学 | Fracture network shear seepage test device and test method thereof |
| CN112730188A (en) * | 2020-11-27 | 2021-04-30 | 江苏珂地石油仪器有限公司 | Gaseous darcy experiment measuring device of hydrate deposit permeability |
| CN118010594A (en) * | 2024-04-09 | 2024-05-10 | 山东省地质矿产勘查开发局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | Device and method for testing mechanical properties of geothermal exploration sampling rock core |
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| CN111982782B (en) * | 2020-08-24 | 2022-08-23 | 中国海洋石油集团有限公司 | System for measuring in-situ permeability pressure gradient and mechanical property of hydrate deposit |
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| CN118010594A (en) * | 2024-04-09 | 2024-05-10 | 山东省地质矿产勘查开发局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | Device and method for testing mechanical properties of geothermal exploration sampling rock core |
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| CN109540762B (en) | 2020-05-19 |
| WO2020098071A1 (en) | 2020-05-22 |
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