CN208313766U - The permeability test device of porous media containing methane hydrate under a kind of stress condition - Google Patents
The permeability test device of porous media containing methane hydrate under a kind of stress condition Download PDFInfo
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- CN208313766U CN208313766U CN201820028456.2U CN201820028456U CN208313766U CN 208313766 U CN208313766 U CN 208313766U CN 201820028456 U CN201820028456 U CN 201820028456U CN 208313766 U CN208313766 U CN 208313766U
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- pressure
- methane
- autoclave
- pipeline
- methane hydrate
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Abstract
The utility model discloses the permeability of porous media containing methane hydrate test devices under a kind of stress condition, including pressure of methane feedway, loading device, autoclave, temperature control device, vacuum evacuation device, test device to form.Porous media (aqueous sandy soils) is filled into autoclave and seals by the utility model, is pressed into methane gas using pressure piping under cryogenic conditions.After methane hydrate generation, liquid (- 1 DEG C of alcohol liquid) then will be loaded using force (forcing) pump and will be pressed into the rubber bush of autoclave pressure, while maintaining low temperature environment for methane hydrate, simulates the crustal stress condition of methane hydrate.It is pressed again by methane gas, carries out permeability test experiments, while measuring the saturation degree of methane hydrate.The utility model can measure the permeability of methane hydrate under different stress conditions, different saturation, contact closely with Practical Project, easy to operate.
Description
Technical field
The utility model belongs to porous media containing methane hydrate under experiment test device more particularly to stress condition and permeates
Rate test device.
Background technique
The energy is the power of national development, economic growth, and current China's economy is still in high speed build phase, to the energy
Dependence it is still very big, especially petroleum, coal consumption amount are huge, and resource scarcity at the same time, problem of environmental pollution are increasingly prominent
Out.Therefore, develop and use other unconventional clean energy resourcies become there is an urgent need to.China's methane hydrate reserves are huge, mainly deposit
It is submarine sedimentary strata and land frozen soil layer, there is wide exploration prospect, research methane hydrate seepage characteristic pacifies hydrate
Complete effectively exploitation is of great significance.
Many scholars study the seepage characteristic of methane hydrate in porous media, and achieve certain grind
Study carefully achievement.But it although these experimental provisions can make certain research to methane hydrate porous media, does not account for
The variation of sedimentary confining pressure and axis pressure in recovery process has certain gap with practical engineering application.
Utility model content
The purpose of the utility model is to provide it is a kind of it is easy to operate, consider the porous containing methane hydrate of stress condition
Medium permeability test device.Suitable temperature, air pressure environment can be provided by the device, simulates the generation of methane hydrate
Process, at the same by axis pressure and confining pressure variation, further probe into methane hydrate saturation degree and infiltrative changing rule.
For above-mentioned purpose, the technical solution of the utility model is: porous Jie containing methane hydrate under a kind of stress condition
Matter permeability test device, including pressure of methane feedway, loading device, autoclave, temperature control device, vacuum means
It sets, test device composition.
The pressure of methane feedway, mainly by high pressure methane tank, pressure reducing valve, admission pressure pipeline, outlet pressure pipe
The compositions such as road, autoclave pressure, gas exhaust piping, related valve switch；Wherein the admission pressure pipeline and outlet pressure pipeline with
High pressure methane tank is connected, and the gas exhaust piping, autoclave pressure are arranged in outlet pressure pipeline.
The loading device include axial pressure pump, enclose to force (forcing) pump, load liquid (- 1 DEG C of alcohol liquid), related valve and
Load pipeline；Wherein the axial pressure is pumped and is enclosed to force (forcing) pump and is connected by one section of pipeline with autoclave, the other end
It is connected with load liquid container.
The autoclave includes preceding crimp, rear crimp and steel cylinder shell；The wherein preceding crimp
It is placed on front side of cylindrical shell, the rear crimp is placed on rear side of cylindrical shell, and the steel cylinder shell level is put
It sets, rubber tube is arranged in shell.
The temperature control device uses constant temperature refrigeration case, and autoclave is placed in constant temperature refrigeration case.
The vacuum evacuation device includes vacuum pump and associated pipe valve, and intermediate pump passes through pipeline and air inlet pressure solenoid
Road is connected.
The test device includes that pressure gauge, axis pressure table, confining pressure table, flowmeter and vacuum meter, test device are placed on phase
In the pipeline answered.
Possessed beneficial effect is the utility model compared with prior art: the utility model is (aqueous by porous media
Sandy soils) be filled into autoclave pressure and seal, methane gas is pressed into using pressure piping under cryogenic conditions.To methane hydrate
After generation, liquid (- 1 DEG C of alcohol liquid) then will be loaded using force (forcing) pump and will be pressed into the rubber bush of autoclave pressure, will be hydrated for methane
While object maintains low temperature environment, the crustal stress condition of methane hydrate is simulated.It is pressed again by methane gas, carries out permeability survey
Examination experiment, while the saturation degree of methane hydrate is measured, the infiltration of methane hydrate can be measured again by changing axis pressure confining pressure condition
Rate.
In conclusion the utility model can measure the permeability of methane hydrate under different crustal stress, different saturation,
With engineering reality more closely, can be the exploitation of methane hydrate using theories integration is provided, the utility model is easy to operate, makes
With convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
It is as follows that representative technical characteristic is respectively numbered in figure.
1- high pressure methane tank；2- pressure reducing valve；3- total valve；The first outlet valve of 4-；5- autoclave pressure；The second air outlet valve of 6-
Door；7- first pressure gauge；8- flowmeter；Crimp before 9-；10- porous media；11- steel cylinder shell；12- rubber tube；13-
Crimp afterwards；14- air intake valve；15- vacuum valve；16- vacuum pump；17- second pressure gauge；18- axis presses table；19- axial pressure
Pump；20- confining pressure table；21- is enclosed to force (forcing) pump；22- pressurizing valve；23- loads liquid (- 1 DEG C of alcohol liquid)；24- air inlet pipeline；25-
Outlet pipe；26- constant temperature refrigeration case；27- vacuum meter；28- gas exhaust piping；29- drain tap.
Specific embodiment
The embodiments of the present invention are further illustrated in conjunction with attached drawing.As shown in Figure 1, a kind of porous Jie containing methane hydrate
Matter permeability test device specifically includes that pressure of methane feedway, loading device, autoclave, temperature control device, vacuumizes
Device, test device, the electrical equipment being related in the present apparatus are all powered by the prior art, are repeated no more its and specific are tied
Structure and specific power supply mode.
The pressure of methane feedway, mainly by high pressure methane tank 1, pressure reducing valve 2, admission pressure pipeline 24, air pressure out
Solenoid road 25, autoclave pressure 5, air intake valve 14, the first outlet valve 4, the second outlet valve 6, gas exhaust piping 28, drain tap
29 compositions；Wherein the admission pressure pipeline 24 is connected with one end of outlet pressure pipeline 25 with high pressure methane tank 1, air inlet pressure
24 other end of solenoid road is connected by screw thread with rear crimp 13, and is finally imported methane gas in autoclave, outlet
25 other end of pressure piping is connected with preceding crimp 9, and the autoclave pressure 5, gas exhaust piping 28, drain tap 29 are arranged in outlet
In pressure piping 25.
The loading device include axial pressure pump 19, enclose to force (forcing) pump 21, load 23(-1 DEG C of alcohol liquid of liquid), pressurization
Valve 22 and related load pipeline；Wherein the axial pressure, which pumps 19 and encloses to one end of force (forcing) pump 21, passes through pipeline screw thread and height
Reaction kettle is pressed to be connected, the other end is connected with load liquid container.
The autoclave includes preceding crimp 13, rear crimp 9 and steel cylinder shell 11；The wherein preceding pressure
9 fittings are placed on 11 front side of cylindrical shell, and are inserted into 11 cavity of cylindrical shell, and the rear crimp 13 is placed on outside cylinder
11 rear side of shell, same to be inserted into 11 cavity of cylindrical shell, the steel cylinder shell 11 is horizontal positioned, and rubber is arranged in shell
Packing element 12.
The temperature control device uses constant temperature refrigeration case 26, and autoclave is placed in constant temperature refrigeration case 26, constant temperature refrigeration
The setting temperature of case 26 is -1 DEG C.
The vacuum evacuation device includes vacuum pump 16, vacuum valve 15 and associated pipe, intermediate pump 16 by pipeline with
Admission pressure pipeline 24 is connected.
The test device includes first pressure gauge 7, second pressure gauge 17, axis pressure table 18, confining pressure table 20,8 and of flowmeter
Vacuum meter 27, test device are placed in corresponding pipeline.
It is as follows using above-mentioned one kind permeability test device specific experiment process of porous media containing methane hydrate.
Step 1 prepares porous media, and sand (or glass sand) is stirred evenly with deionized water, compacting filling high pressure
In the cavity of reaction kettle cylindrical shell 11, hydrate deposit is formed.
Preceding crimp 13, rear crimp 9 are packed into cylindrical shell 11 by step 2, and by air inlet pipeline 24, outlet pipe 25
It is connected respectively with rear crimp 9, preceding crimp 13, connects the power switch of vacuum pump 16, and open 15 pairs of vacuum valve experiments
Pipeline vacuumizes, and when gauge 15 shows vacuum degree close to 0, closes vacuum pump 16 and vacuum valve 15.
Step 3 opens high pressure methane tank 1, pressure reducing valve 2, total valve 3, air intake valve 14, the second outlet valve 6, by first
Alkane gas injects in autoclave and autoclave pressure 5, when 17 registration of second pressure gauge to test setting pressure (generally higher than 3MP)
After stand for 24 hours.
Step 4 closes air intake valve 14, opens constant temperature refrigeration case 26 for reaction environment temperature and is down to -1 DEG C, and observes the
One pressure gauge 7, after pressure has larger reduction and stablizes constant in autoclave, hydrate has been synthesized at this time, according to anti-
Front and back pressure change is answered, the initial saturation degree of hydrate generated is calculated using The Ideal-Gas Equation.
Step 5 opens air intake valve 14, adjusts the pressure that admission pressure is greater than in autoclave and carries out permeability examination
It tests, according to first pressure gauge 7, second pressure gauge 17,8 registration of flowmeter calculates the permeability of methane hydrate.
Step 6 opens pressurizing valve 22, connects axial pressure pump 19, encloses power supply and the starting to force (forcing) pump 21, will load
Liquid 23 is pressed into rubber tube 12, changes the stress condition of methane hydrate according to confining pressure table 20, axis pressure 18 registration of table, further according to first
Pressure gauge 7, second pressure gauge 17,8 registration of flowmeter calculate the permeability of methane hydrate at this time.
Step 7 closes air intake valve 14, opens drain tap 29 and carries out decompression decomposition to hydrate in autoclave,
Pass through the variable quantity of the changing value calculated hydration object saturation degree of first pressure gauge 7.
Step 8 repeats Step 5: six, seven can be obtained hydrate deposit under different saturation difference stress condition
Permeability.
Step 9 after experiment, opens drain tap 29 and empties gas in pipeline, will enclose and add to force (forcing) pump 21, axial direction
Press pump 19 resets and powers off switch, closes all pipe valves in experimental provision, extracts preceding crimp 9 and rear crimp out
13, and sand in autoclave is cleaned out.
The above is only the preferred embodiment of the utility model, not does limit in any form to the utility model
System, any person skilled in the art are not departing within the scope of technical solutions of the utility model, when using the disclosure above
Technology contents make change or modify the equivalent embodiment of equivalent variations, but it is all without departing from technical solutions of the utility model
Content is still within the scope of the technical solutions of the present invention.
Claims (1)
1. the permeability of porous media containing methane hydrate test device under a kind of stress condition, it is characterised in that: include: methane pressure
Power feedway, loading device, autoclave, temperature control device, vacuum evacuation device and test device；
The pressure of methane feedway, including high pressure methane tank, pressure reducing valve, admission pressure pipeline, outlet pressure pipeline road, pressure
Power kettle, air intake valve, the first outlet valve, the second outlet valve, gas exhaust piping and drain tap；The wherein admission pressure
Pipeline is connected with one end of outlet pressure pipeline with high pressure methane tank, and the admission pressure pipeline other end passes through screw thread and rear crimp
It is connected, and finally imports methane gas in autoclave, the outlet pressure pipeline other end is connected with preceding crimp, described
Autoclave pressure, gas exhaust piping, drain tap are arranged in outlet pressure pipeline；
The loading device includes axial pressure pump, encloses to force (forcing) pump, load liquid and pressurizing valve；Wherein axial pressure pump
It is connected by pipeline screw thread with autoclave with enclosing to one end of force (forcing) pump, the other end is connected with load liquid container；
The autoclave includes preceding crimp, rear crimp and steel cylinder shell；Wherein the preceding crimp is placed
It on front side of cylindrical shell, and is inserted into cylindrical shell cavity, the rear crimp is placed on rear side of cylindrical shell, and is inserted into circle
In column cavity pocket of outer cover, the steel cylinder shell is horizontal positioned, and rubber tube is arranged in shell；
The temperature control device uses constant temperature refrigeration case, and autoclave is placed in constant temperature refrigeration case, the setting of constant temperature refrigeration case
Temperature is -1 DEG C；
The vacuum evacuation device includes vacuum pump and vacuum valve, and intermediate pump is connected by pipeline with admission pressure pipeline；
The test device includes first pressure gauge, second pressure gauge, axis pressure table, confining pressure table, flowmeter and vacuum meter, test dress
Placement location is in corresponding pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820028456.2U CN208313766U (en) | 2018-01-09 | 2018-01-09 | The permeability test device of porous media containing methane hydrate under a kind of stress condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820028456.2U CN208313766U (en) | 2018-01-09 | 2018-01-09 | The permeability test device of porous media containing methane hydrate under a kind of stress condition |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045080A (en) * | 2019-03-15 | 2019-07-23 | 广州海洋地质调查局 | Hydrate reservoir stress sensitivity experimental method under a kind of difference hydrate concentration state |
| CN110231266A (en) * | 2019-03-15 | 2019-09-13 | 广州海洋地质调查局 | Gas And Water Relative Permeability measuring method under different stress difference hydrate saturation states |
| WO2021082224A1 (en) * | 2019-10-28 | 2021-05-06 | 中国科学院广州能源研究所 | Natural gas hydrate mineral fracturing experiment device |
-
2018
- 2018-01-09 CN CN201820028456.2U patent/CN208313766U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045080A (en) * | 2019-03-15 | 2019-07-23 | 广州海洋地质调查局 | Hydrate reservoir stress sensitivity experimental method under a kind of difference hydrate concentration state |
| CN110231266A (en) * | 2019-03-15 | 2019-09-13 | 广州海洋地质调查局 | Gas And Water Relative Permeability measuring method under different stress difference hydrate saturation states |
| WO2021082224A1 (en) * | 2019-10-28 | 2021-05-06 | 中国科学院广州能源研究所 | Natural gas hydrate mineral fracturing experiment device |
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