CN108318633A - A kind of seabed exploit induced disaster experimental simulation research device and experimental method without overlying densification cap rock hydrate - Google Patents
A kind of seabed exploit induced disaster experimental simulation research device and experimental method without overlying densification cap rock hydrate Download PDFInfo
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Abstract
The present invention relates to a kind of seabeds to exploit induced disaster experimental simulation research device and experimental method without overlying densification cap rock hydrate, including air deep water stratum natural environment visual simulation system, gas hydrates note adopt simulation system, temperature control system, control pressurer system, data collecting system and image acquisition system；Reasonable design of the present invention, perfect in shape and function and easy to use are realized to methane concentration changes in deformation of the air deep water ground environment without overlying densification overburden formations entirety, seawater disturbance and air comprehensive Macrovision analog.The related data in simulation process is monitored in real time by relevant temperature, pressure and gas concentration sensor, whole Image Acquisition is carried out to simulation process using camera.The more sufficient deficiency of hydrate recovery process reservoir simulation and environmental simulation, is of great significance to the understanding of the trigger mechanism of the geological environmental disaster thereby resulted in research.
Description
Technical field
The present invention relates to a kind of seabed without overlying densification cap rock hydrate exploitation induced disaster experimental simulation research device with
Experimental method belongs to exploitation of gas hydrates induced disaster technique of experimental simulation field.
Background technology
Gas hydrates are the cage modle crystalline compounds that natural gas and water are formed under the conditions of certain temperature and pressure,
It is distributed widely in continent outer edge and permafrost.It has have a very wide distribution, resource reserve it is big, the features such as energy density is high,
The middle of this century gas hydrates are expected to become a kind of energy fuel the most universal.
However, generally believing that the exploitation of gas hydrates also brings along the influence of series of negative environment, such as aggravate greenhouse
Effect causes the geological disasters such as diastrophism, destroys marine organisms group's kind.The small variation of pressure and temperature is all in nature
It can cause gas hydrate dissociation, and methane gas is discharged to air.Methane gas during developing gas hydrates
Greenhouse effects certainly will be aggravated by leaking into air, and temperature is caused to increase, this will cause the gas hydrates under permafrost
Automatic classifying, greenhouse effects are further exacerbated by；Exploitation causes decomposition of hydrate, discharges gas and leaves water, is i.e. solid-state hydrate
Become liquid water, this may cause sediment physical properties, Geophysical Properties and chemical property of the earth to change, and cause
Diastrophism and seafloor slump；The methane of gas hydrate dissociation in bottom sediment enters water body, occurs with dissolved oxygen
Reaction so that Dissolved Oxygen in Seawater concentration reduces, while global warming can be such that water temperature increases again, further decrease molten
Oxygen concentration is solved, the existence evolution of biotic population in land and ocean is influenced
The simulation system that existing gas hydrates exploitation causes disaster is confined to hydrate distribution and Micromechanics
The research of characteristic, or using basket to the analog development of independent closed hydrate reservoir, and for no overlying densification cap rock
The Changeement of methane concentration is insufficient in the disturbance of seawater and air in stratum, lacks comprehensive macro in atmosphere-ocean-stratum
See simulation system.
Invention content
In view of the deficiencies of the prior art, the present invention provide a kind of simple in structure, installation lay convenient, reliable working performance and
Induced disaster experimental simulation research device is exploited without overlying densification cap rock hydrate in the seabed for capableing of full-scope simulation.
The present invention also provides a kind of experimental methods using above-mentioned experimental simulation research device.
Technical scheme is as follows：
A kind of seabed exploit induced disaster experimental simulation research device, including air-depth without overlying densification cap rock hydrate
Water-stratum natural environment visual simulation system, gas hydrates note adopt simulation system, temperature control system, pressure control
System, data collecting system and image acquisition system；
Wherein, gas hydrates note is adopted in simulation system and air-deep water-stratum natural environment visual simulation system
Portion connects, real for air-deep water-stratum natural environment visual simulation system heated fluid injection and collecting discharge gas
The hot-fluid injection exploitation of existing simulating hydrate reservoir；
Temperature control system is connect with air-deep water-stratum natural environment visual simulation system outer surface, for controlling
With the experimental temperature for adjusting air-deep water-stratum natural environment visual simulation system；
Connect inside control pressurer system and air-deep water-stratum natural environment visual simulation system, for control with
Adjust the experimental pressure of air-deep water-stratum natural environment visual simulation system；
Data collecting system is connect with air-deep water-stratum natural environment visual simulation system, is tested for obtaining
Experimental data in journey, and experimental data is transferred to computer, the analysis that experimental data is carried out by computer calculates；
Image acquisition system is used to capture the experimental image of air-deep water-stratum natural environment visual simulation system, and
Trial image is transferred to computer, the analysis that experimental image is carried out by computer calculates.
Preferably, the air-deep water-stratum natural environment visual simulation system include autoclave shell, on
Circulating water pipeline, under circulation water pipe road, insulating layer, layered thermal insulation plate and simulated object；Upper circulation water pipeline and lower recirculated water
Pipeline is looped around autoclave outer surface of outer cover and carries out isolation setting by layered thermal insulation plate respectively, then by insulating layer packet
It wraps up in, simulated object is placed in autoclave shell.
Preferably, the simulated object includes gas, water, sand and simulating hydrate, in autoclave shell by
Gas blanket, water layer, sandy soils and simulating hydrate layer are sequentially formed under above.This design is advantageous in that simulated object is distinguished
Simulated atmosphere, deep water, rock-soil layer or shoreline recession, hydrate reservoir are capable of providing an environments such as subsea true to nature, ensure experiment
As a result accuracy and reliability.
Preferably, the water includes distilled water or brine；The simulating hydrate is ice, hydrate or hydrate and sand
Mixture, ice by distillation water condensation be made, hydrate is made of distilled water and methane or distilled water with carbon dioxide, sand
For the simulated formation sand with uniform mesh number.
Preferably, it includes heated fluid generator, control valve, fluid flow that the gas hydrates note, which adopts simulation system,
Meter, injection well simulation tubing string, gas collector, gas flowmeter, extraction well simulation tubing string and moisture trap；Injection well is simulated
Tubing string and extraction well simulation tubing string are inserted into autoclave enclosure respectively and bottom end is respectively positioned on simulating hydrate layer, extraction well
The bottom end for simulating tubing string connects moisture trap, and heated fluid generator is simulated tubing string top with injection well by hot fluid pump and connected
It connects, control valve and fluid flowmeter is also connected on injection well simulation tubing string, gas collector connects with extraction well simulation tubing string top
It connects, control valve and gas flow meter is also connected on extraction well simulation tubing string.
Preferably, the temperature control system includes atmospheric temperature control water bath, formation temperature control water bath and temperature
Controller is spent, atmospheric temperature control water bath is connect with upper circulation water pipeline, and formation temperature controls water bath and under circulation water pipe
Road connects, and atmospheric temperature control water bath and formation temperature control water bath connect control with temperature controller respectively.
Preferably, the control pressurer system includes gas-booster, gas flowmeter, control valve and gas pressure inlet,
Gas boosting pipe is inserted into autoclave enclosure and bottom end is located at gas blanket, and gas-booster connects with gas boosting tube top end
It connects, gas flowmeter and control valve are mounted on gas boosting pipe.
Preferably, the data collecting system includes being respectively arranged at autoclave cover top portion and the pressure biography of bottom
Sensor and temperature sensor are set to autoclave cover top portion and are located at the gas concentration measurement instrument of gas blanket, are set to height
Pressure reaction kettle side wall of outer shell is located at the gas concentration measurement instrument of water layer, pressure sensor, temperature sensor, gas concentration measurement instrument
It is connect respectively with computer.
Preferably, the image acquisition system includes pedestal and the camera being mounted on the base, camera and computer
It connects, is provided with visualization window on autoclave shell, visualization window side is provided with graduation mark, and camera face can
Experimental image capture is carried out depending on changing window.
Preferably, the injection well simulation tubing string and extraction well simulation tubing string are enclosed with glass fibre.This is designed good
It is in glass fibre can effectively play the effect of insulation, ensure that gas hydrates note adopts the normal of simulation system
Running.
Preferably, the upper circulation water pipeline, under circulation water pipe road are all made of Heat Conduction Material metallic copper and are made.
A kind of method that induced disaster experimental simulation is exploited in seabed without overlying densification cap rock hydrate, includes the following steps：
Step 1: Preparatory work of experiment：Required according to experimental design, prepare required water, sand, ice or gas hydrates or
The mixture of gas hydrates and sand, debugging computer, camera, pressure sensor and temperature sensor；
Step 2: environment is default：Start cycle atmospheric temperature control water bath and formation temperature controls water bath, Zhi Daoji
The temperature and pressure of calculation machine acquisition meets requirement of experiment, and persistent loop；
Step 3: simulated experiment：Using above-mentioned experimental simulation research device, experimental method is as follows：
(1) by the experiment material ice or mixture of gas hydrates or gas hydrates and sand, sand and water according to
It is secondary to be put into autoclave shell, from top to bottom sequentially formed in autoclave shell gas blanket, water layer, sandy soils and
Simulating hydrate layer；
(2) installation gas hydrates note adopts simulation system, starts gas-booster and pressurizes into autoclave shell,
Temperature, pressure parameter to its stabilization are observed by computer；
(3) by injection well simulate tubing string according to design current velocity into autoclave shell heated fluid injection to simulation water
Close nitride layer；The gas or air-water mixture generated in simulating hydrate layer is discharged through moisture trap by extraction well simulation tubing string,
Gas stream is measured by gas flowmeter simultaneously and goes out speed；
Step 4: picture catching, data processing：It is captured by pressure sensor, temperature sensor, gas concentration measurement instrument
Methane concentration, pressure, temperature variation in gas and water shoot observation sand slump situation and seawater level of disruption by camera,
And it is measured by the graduation mark of visualization window.
The beneficial effects of the present invention are：
1. experimental simulation research device of the present invention is reasonable for structure ingenious, installation is laid simple, and use is easy to operate, input at
This is low.Experimental model visualize and simulation effect it is good, using data monitoring control device can be relatively simple record phenomenon observe
The experimental physics phenomenon of device conduction, convenient for experimental phenomena analyze intuitively, in time, experimental result is true and reliable
Property is strong.
2., can be to seabed without overlying densification cap rock water by the experimental method that experimental simulation research device of the present invention provides
It closes object exploitation induced disaster and carries out effective simulated operation, thus sea bed gas hydrate is safely and efficiently developed with one
Fixed guiding value is of great significance to the understanding of the trigger mechanism of the geological environmental disaster thereby resulted in research, has
Relatively broad popularizing application prospect.
3. experimental simulation research device stable work in work of the present invention, applied widely, the present invention is realized to air-depth
The variation of methane concentration in deformation of the water-ground environment without overlying densification overburden formations entirety, the disturbance of seawater and air
Comprehensive Macrovision analog.By corresponding temperature, pressure and gas concentration sensor to the related data in simulation process into
Row real time monitoring carries out whole Image Acquisition to simulation process using camera, facilitates data analysis.The scope of application of the present invention
Extensively, there is higher research and application value, exploiting induced disaster experimental simulation without overlying densification cap rock hydrate for seabed refers to
Direction is led.
Description of the drawings
Fig. 1 is the composition annexation figure of experimental simulation research device of the present invention；
Fig. 2 is the method flow diagram for carrying out seabed and exploiting induced disaster experimental simulation without overlying densification cap rock hydrate；
Figure label explanation：
1-2-hot fluid of heated fluid generator pumps 3-gas collectors
4-control valve 5-fluid flowmeter, 6-injection wells simulate tubing string
7-extraction wells simulate tubing string 8-pressure sensor, 9-temperature sensor
10-gas concentration measurement instrument 11-gas flowmeter, 12-gas-boosters
13-gas boosting pipe 14-data line, 15-computers
16-layered thermal insulation plate 17-gas, 18-water
19-sand 20-simulating hydrate, 21-moisture traps
22-gas concentration measurement instrument 23-upper circulation water, 24-under circulation water pipe of pipeline roads
25-autoclave shell 26-insulating layer, 27-cameras
28-insulating tube A 29-insulating tube, 30-insulating tubes of B C
31-insulating tube 32-atmospheric temperatures of D control 33-formation temperature of water bath and control water bath
34-temperature controller 35-visualization window, 36-graduation marks
Specific implementation mode
The present invention will be further described by way of example and in conjunction with the accompanying drawings, but not limited to this.
Embodiment 1：
As shown in Figure 1, the present embodiment provides a kind of seabeds mould is tested without overlying densification cap rock hydrate exploitation induced disaster
Quasi- research device, which includes air-deep water-stratum natural environment visual simulation system, natural gas
Hydrate note adopts simulation system, temperature control system, six big portion of control pressurer system, data collecting system and image acquisition system
Point；
Wherein, gas hydrates note is adopted in simulation system and air-deep water-stratum natural environment visual simulation system
Portion connects, real for air-deep water-stratum natural environment visual simulation system heated fluid injection and collecting discharge gas
The hot-fluid injection exploitation of existing simulating hydrate reservoir；
Temperature control system is connect with air-deep water-stratum natural environment visual simulation system outer surface, for controlling
With the experimental temperature for adjusting air-deep water-stratum natural environment visual simulation system；
Connect inside control pressurer system and air-deep water-stratum natural environment visual simulation system, for control with
Adjust the experimental pressure of air-deep water-stratum natural environment visual simulation system；
Data collecting system is connect with air-deep water-stratum natural environment visual simulation system, is tested for obtaining
Experimental data in journey, and experimental data is transferred to computer, the analysis that experimental data is carried out by computer calculates；
Image acquisition system is used to capture the experimental image of air-deep water-stratum natural environment visual simulation system, and
Trial image is transferred to computer, the analysis that experimental image is carried out by computer calculates.
Specifically, air-deep water-stratum natural environment visual simulation system include autoclave shell 25, on
Circulating water pipeline 23, under circulation water pipe road 24, insulating layer 26, layered thermal insulation plate 16 and simulated object；Upper circulation water pipeline 23
It is looped around 25 outer surface of autoclave shell respectively and isolation is carried out by layered thermal insulation plate 16 under circulation water pipe road 24 and sets
It sets, i.e., upper circulation water pipeline 23 is wound in 25 top half of autoclave shell, and it is anti-that under circulation water pipe road 24 is wound in high pressure
25 lower half portion of kettle shell, outermost is answered to be wrapped up again by insulating layer 26, simulated object is loaded in autoclave shell 25.
Experiment simulated object used includes gas 17, water 18, sand 19 and simulating hydrate 20, in autoclave shell
Gas blanket, water layer, sandy soils and simulating hydrate layer are from top to bottom sequentially formed in 25.Simulated object distinguishes simulated atmosphere, depth
Water, rock-soil layer or shoreline recession, hydrate reservoir are capable of providing an environments such as subsea true to nature, ensure the accurate of experimental result
Property and reliability.Water 18 selects distilled water or brine；Simulating hydrate 20 is the mixing of ice or hydrate or hydrate and sand
Object, ice by distillation water condensation be made, hydrate is made of distilled water and methane or distilled water with carbon dioxide, sand for
The simulated formation sand (reservoir sand of simulation Different Strata may be selected to test) of uniform mesh number.
It includes heated fluid generator 1, control valve 4, fluid flowmeter 5, injection well that gas hydrates note, which adopts simulation system,
Simulate tubing string 6, gas collector 3, gas flowmeter 11, extraction well simulation tubing string 7 and moisture trap 21；Injection well simulation pipe
Column 6 is inserted into 25 inside of autoclave shell respectively with extraction well simulation tubing string 7 and bottom end is respectively positioned on simulating hydrate layer, produces
The bottom end that well simulates tubing string 7 connects moisture trap 21, and heated fluid generator 1 simulates tubing string 6 by hot fluid pump 2 with injection well
Top connects, and the hot fluid that heated fluid generator 1 generates is simulated tubing string 6 via injection well by hot fluid pump 2 is driven into mould
Hydrated pseudoboehmite nitride layer, injection well are simulated and are also connected with control valve 4 and fluid flowmeter 5 on tubing string 6, gas collector 3 and extraction well mould
Quasi- 7 top of tubing string connection, extraction well simulate and are also connected with 4 and gas flow meter 11 of control valve on tubing string 7, and moisture trap 21 can be true
Liquid in device will not be taken out of by protecting extraction well simulation tubing string 7.
Temperature control system includes atmospheric temperature control water bath 32, formation temperature control water bath 33 and temperature controller
34, atmospheric temperature controls 32 water outlet of water bath and water inlet distinguishes warm pipe A28 and insulating tube B29 and upper circulation water pipeline
23 inlet and outlet are connected；Formation temperature controls 33 water outlet of water bath and water inlet distinguishes warm pipe C30 and guarantor
Warm pipe D31 is connected with the inlet and outlet under circulation water pipe road 24；Atmospheric temperature controls water bath 32 and formation temperature control
Water bath 33 processed connect control with temperature controller 34 respectively, subsequently controls and adjusts atmospheric temperature control by temperature controller 34
Water bath 32 and formation temperature processed control 33 required temperature of water bath.
Control pressurer system includes gas-booster 12, gas flowmeter 11, control valve 4 and gas pressure inlet 13, gas
Pressure inlet 13 is inserted into 25 inside of autoclave shell and bottom end is located at gas blanket, and gas-booster 12 is pushed up with gas boosting pipe 13
End connection, gas flowmeter 11 and control valve 4 are mounted on gas boosting pipe 13.Later use gas-booster 12 adjusts gas
The pressure value of body layer, makes it meet requirement of experiment.
Data collecting system includes being respectively arranged in the pressure sensor 8 and temperature of 25 top and bottom of autoclave shell
Degree sensor 9 is installed on autoclave cover top portion and is located at the gas concentration measurement instrument 10 of gas blanket, is installed on reaction under high pressure
Kettle side wall of outer shell is located at the gas concentration measurement instrument 22 of water layer, pressure sensor 8, temperature sensor 9, gas concentration measurement instrument
10, it 22 is connect respectively with computer 15 by data line 14.The pressure sensor 8 and temperature sensor 9 at top are used for obtaining gas
The parameter values of body layer, the pressure sensor 8 and temperature sensor 9 of bottom are used for obtaining the parameter values of simulating hydrate layer,
Gas concentration measurement instrument 10,22 is respectively intended to obtain methane concentration in air and water.
Image acquisition system includes pedestal and the camera being mounted on the base 27, and camera 27 passes through data line 14 and meter
Calculation machine 15 connects, and wherein pedestal is the pedestal of adjustable a height and rotation angle, including pedestal and Telescopic rotating bar, camera
27 are mounted on the top of Telescopic rotating bar；Visualization window 35 is offered on autoclave shell 25, visualization window 35 is adopted
It is designed and produced with the anti-delineation plates of high pressure resistant, low temperature PC, 35 side of visualization window is provided with the scale that least unit is millimeter
Line, 27 face visualization window 35 of camera carry out experimental image capture, the experimental image of capture are subsequently transferred to computer
15, image analysis is carried out by computer.
Embodiment 2：
A kind of seabed exploit induced disaster experimental simulation research device, structure such as embodiment without overlying densification cap rock hydrate
Described in 1, the difference is that：Injection well simulates tubing string 6 and extraction well simulation tubing string 7 is enclosed with glass fibre.Glass fibers
Dimension can effectively play the effect of insulation, ensure that gas hydrates note adopts the normal operation of simulation system.
Upper circulation water pipeline 23, under circulation water pipe road 24 are all made of Heat Conduction Material metallic copper and are made, and heat conduction can be improved
Efficiency.
Embodiment 3：
A kind of method that induced disaster experimental simulation is exploited in seabed without overlying densification cap rock hydrate, using embodiment 1 or
Experimental simulation research device described in embodiment 2, this method specifically include following steps：
Step 1: Preparatory work of experiment：It is required according to experimental design, prepares required water 18, sand 19, ice or natural gas hydration
The mixture of object or gas hydrates and sand, debugging computer 15, camera 27, pressure sensor 8 and temperature sensor
9；
Step 2: environment is default：Start cycle atmospheric temperature control water bath 32 and formation temperature controls water bath 33
Water, until the temperature and pressure in air-deep water-stratum natural environment visual simulation system that computer 15 acquires meets reality
Test requirement, and persistent loop；
Step 3: induced disaster simulated experiment is exploited in seabed without overlying densification cap rock hydrate, experimental method is as follows：
(1) by the experiment material ice or mixture of gas hydrates or gas hydrates and sand, sand 19 and water
18 are sequentially placed into autoclave shell 25, from top to bottom sequentially formed in autoclave shell 25 gas blanket, water layer,
Sandy soils and simulating hydrate layer, with this simulating ocean environment；
(2) installation gas hydrates note adopts simulation system, starts gas-booster 12 into autoclave shell 25
Pressurization observes temperature, pressure parameter to its stabilization by computer 15；
(3) hot fluid pump 2 is opened, the hot fluid (hot water or hot steam) in hot fluid transmitter 1 is passed through into injection well mould
Quasi- tubing string 6 according to design current velocity into autoclave shell 25 heated fluid injection to simulating hydrate layer；In simulating hydrate
The gas or air-water mixture that layer generates are discharged through moisture trap 21 by extraction well simulation tubing string 7, while by gas flowmeter
11 measure the gas rate of outflow；
Step 4: picture catching, data processing：Pass through pressure sensor 8, temperature sensor 9, gas concentration measurement instrument
10,22 methane concentration, pressure, temperature variation in gas and water are captured, observation sand slump situation and sea is shot by camera 27
Water level of disruption, and measured by the graduation mark 36 of 35 side of visualization window.By the parameter of these acquisitions and shooting
Image transmitting carries out subsequent experimental data by computer and experimental image is analyzed to computer.
Claims (10)
1. induced disaster experimental simulation research device, including air-deep water-are exploited in a kind of seabed without overlying densification cap rock hydrate
Stratum natural environment visual simulation system, gas hydrates note adopt simulation system, temperature control system, pressure control system
System, data collecting system and image acquisition system；
Wherein, gas hydrates note is adopted connects inside simulation system and air-deep water-stratum natural environment visual simulation system
It connects, for air-deep water-stratum natural environment visual simulation system heated fluid injection and collecting discharge gas, realizes mould
The hot-fluid injection of hydrated pseudoboehmite object reservoir is developed；
Temperature control system is connect with air-deep water-stratum natural environment visual simulation system outer surface, for controlling and adjusting
Save the experimental temperature of air-deep water-stratum natural environment visual simulation system；
It is connect inside control pressurer system and air-deep water-stratum natural environment visual simulation system, for controlling and adjusting
The experimental pressure of air-deep water-stratum natural environment visual simulation system；
Data collecting system is connect with air-deep water-stratum natural environment visual simulation system, for obtaining in experimentation
Experimental data, and experimental data is transferred to computer, the analysis that experimental data is carried out by computer calculates；
Image acquisition system is used to capture the experimental image of air-deep water-stratum natural environment visual simulation system, and will examination
Image transmitting is tested to computer, the analysis that experimental image is carried out by computer calculates.
2. experimental simulation research device as described in claim 1, which is characterized in that the air-deep water-stratum natural environment
Visual simulation system includes autoclave shell, upper circulation water pipeline, under circulation water pipe road, insulating layer, layered thermal insulation plate
And simulated object；Upper circulation water pipeline and under circulation water pipe road are looped around autoclave outer surface of outer cover and respectively by dividing
Layer thermal insulation board carries out isolation setting, then is wrapped up by insulating layer, and simulated object is placed in autoclave shell.
3. experimental simulation research device as claimed in claim 2, which is characterized in that the simulated object includes gas, water, sand
Soil and simulating hydrate from top to bottom sequentially form gas blanket, water layer, sandy soils and simulation hydration in autoclave shell
Nitride layer.
4. experimental simulation research device as claimed in claim 3, which is characterized in that the water includes distilled water or brine；Institute
The mixture that simulating hydrate is ice, hydrate or hydrate and sand is stated, ice is made of distillation water condensation, and hydrate is distillation
Water is made with methane or distilled water with carbon dioxide, and sand is the simulated formation sand with uniform mesh number.
5. experimental simulation research device as claimed in claim 3, which is characterized in that the gas hydrates note adopts simulation system
System includes heated fluid generator, control valve, fluid flowmeter, injection well simulation tubing string, gas collector, gas flowmeter, adopts
Go out well simulation tubing string and moisture trap；Injection well simulates tubing string and extraction well simulation tubing string is inserted into autoclave shell respectively
Internal and bottom end is respectively positioned on simulating hydrate layer, and the bottom end of extraction well simulation tubing string connects moisture trap, heated fluid generator
Tubing string top is simulated with injection well to connect, control valve and fluid flow are also connected on injection well simulation tubing string by hot fluid pump
Meter, gas collector are connect with extraction well simulation tubing string top, and control valve and gas flow are also connected on extraction well simulation tubing string
Meter.
6. experimental simulation research device as claimed in claim 2, which is characterized in that the temperature control system includes big temperature
Degree control water bath, formation temperature control water bath and temperature controller, atmospheric temperature control water bath and upper circulation water pipeline
Connection, formation temperature control water bath are connect under circulation water pipe road, and atmospheric temperature controls water bath and formation temperature controls water
Bath cabinet connect control with temperature controller respectively.
7. experimental simulation research device as claimed in claim 3, which is characterized in that the control pressurer system includes that gas increases
Press, gas flowmeter, control valve and gas pressure inlet, gas boosting pipe is inserted into autoclave enclosure and bottom end is located at
Gas blanket, gas-booster are connect with gas boosting tube top end, and gas flowmeter and control valve are mounted on gas boosting pipe.
8. experimental simulation research device as claimed in claim 3, which is characterized in that the data collecting system includes setting respectively
It is placed in the pressure sensor of autoclave cover top portion and bottom and temperature sensor, is set to autoclave cover top portion
Positioned at gas blanket gas concentration measurement instrument, be set to the gas concentration measurement instrument that autoclave side wall of outer shell is located at water layer,
Pressure sensor, temperature sensor, gas concentration measurement instrument are connect with computer respectively.
9. experimental simulation research device as claimed in claim 8, which is characterized in that the image acquisition system include pedestal and
The camera being mounted on the base, camera are connect with computer, visualization window are provided on autoclave shell, visually
Change window side and be provided with graduation mark, camera face visualization window carries out experimental image capture.
10. a kind of method that induced disaster experimental simulation is exploited in seabed without overlying densification cap rock hydrate, utilizes claim 1-9
Any one of them experimental simulation research device, includes the following steps：
Step 1: Preparatory work of experiment：It is required according to experimental design, prepares required water, sand, ice or gas hydrates or natural
The mixture of gas hydrate and sand, debugging computer, camera, pressure sensor and temperature sensor；
Step 2: environment is default：Start cycle atmospheric temperature control water bath and formation temperature controls water bath, until computer
The temperature and pressure of acquisition meets requirement of experiment, and persistent loop；
Step 3: simulated experiment：Using above-mentioned experimental simulation research device, experimental method is as follows：
(1) the experiment material ice or mixture of gas hydrates or gas hydrates and sand, sand and water are put successively
Enter in autoclave shell, gas blanket, water layer, sandy soils and simulation are from top to bottom sequentially formed in autoclave shell
Hydrate layer；
(2) installation gas hydrates note adopts simulation system, starts gas-booster and pressurizes into autoclave shell, passes through
Computer observes temperature, pressure parameter to its stabilization；
(3) by injection well simulate tubing string according to design current velocity into autoclave shell heated fluid injection to simulating hydrate
Layer；The gas or air-water mixture generated in simulating hydrate layer is discharged through moisture trap by extraction well simulation tubing string, simultaneously
Gas stream is measured by gas flowmeter and goes out speed；
Step 4: picture catching, data processing：Gas is captured by pressure sensor, temperature sensor, gas concentration measurement instrument
And methane concentration, pressure, temperature variation in water, observation sand slump situation and seawater level of disruption are shot by camera, and lead to
The graduation mark for crossing visualization window is measured.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551672A (en) * | 2020-03-26 | 2020-08-18 | 广东工业大学 | Natural gas hydrate exploitation methane leakage simulation system and method |
| CN111929341A (en) * | 2020-08-06 | 2020-11-13 | 中国科学院广州能源研究所 | Formation temperature gradient simulator |
| CN111997595A (en) * | 2020-08-06 | 2020-11-27 | 中国科学院广州能源研究所 | Natural gas hydrate geological layering device and method |
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| CN115541821B (en) * | 2022-09-23 | 2023-04-14 | 清华大学 | Seabed carbon dioxide sequestration, monitoring and early warning integrated simulation device and method |
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