CN107542436A - A kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate - Google Patents
A kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate Download PDFInfo
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- CN107542436A CN107542436A CN201710991665.7A CN201710991665A CN107542436A CN 107542436 A CN107542436 A CN 107542436A CN 201710991665 A CN201710991665 A CN 201710991665A CN 107542436 A CN107542436 A CN 107542436A
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Abstract
The invention discloses a kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate, it is related to gas hydrates development field, is particularly used for simulating a kind of indoor experimental apparatus that parallel water horizontal well mixed phase drives exploitation of gas hydrate.Device includes air supply system, liquid-supplying system, simulation system, injected system, production system and monitoring system, apparatus of the present invention use main body of the back-up sand case as simulation system, pass through air supply system, liquid-supplying system supplies natural gas into simulation system and water forms gas hydrates, carbon dioxide and chemical agent are injected by injected system and drive exploitation to simulate mixed phase, produced gas and water are implemented to collect by production system, complete monitoring is implemented to experimentation by monitoring system, experimental provision of the present invention drives exploitation of gas hydrate to mixed phase using three dimensional constitution and implements simulation, withdrawal mechanism research is driven to gas hydrates mixed phase certain directive function.
Description
Technical field
The invention discloses a kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate, it is related to natural gas
Hydrate development field, it is particularly used for simulating a kind of laboratory experiment dress that parallel water horizontal well mixed phase drives exploitation of gas hydrate
Put.
Background technology
Gas hydrates (natural gas hydrate, abbreviation NGH) are natural gases under certain low temperature, high pressure
The non-stoichiometry cage compound formed with water, also referred to as " combustible ice ".1m3Gas hydrates can contain 164m3Methane gas
And 0.8m3Water." combustible ice " is the product of growing nonparasitically upon another plant of natural gas, and application is roughly the same with natural gas, is a kind of typical
Oil substitutes." combustible ice " easily burns, under equal conditions, energy ratio coal caused by " combustible ice " burning, oil, natural
Gas will be higher by decades of times, be described as " belonging to the super energy that end is come ".
The flammable ice reserves very abundant in China, according to investigation, the gas hydrates in China are mainly distributed on south
Marine site, Area of The East China Sea, Qinghai-Tibet tundra and northeast tundra.
Artificially break the phase balance condition that gas hydrates are stabilized, promote its decomposition, be that current exploitation is natural
The main method of gas hydrate.According to the equilbrium phase diagram of gas hydrates, heating, chemical method, decompression can be generally divided into
The class of method three.
Heating：Steam, hot water, hot salt brine or other hot fluid mediums are mainly pumped into natural gas by the method from ground
Hydrate reservoir, also using the fire flooding used when exploiting heavy oil or drill string heater can be utilized.Hot production technique it is main not
Foot is to cause substantial amounts of heat loss, and efficiency is very low.
Add chemical agent：The chemical agent such as some chemical agents, salt solution, methanol, ethanol, ethylene glycol, glycerine can change
Become the phase balance condition of gas hydrate synthesis, reduce hydrate equilibrium temperature.The shortcomings that adding chemical agent maximum is that expense is too expensive.
Because the pressure of big midocean gas hydrates is higher, thus the method should not be used.
Voltage drop method：Cause the movement of the stable phase equilibrium line of gas hydrates by reducing pressure, so as to reach
Promote the purpose of gas hydrate dissociation.Free gas under exploitation hydrate layer is that the one kind for reducing reservoir pressure has efficacious prescriptions
Method, the purpose of control reservoir pressure can be reached additionally by the extraction rate of regulation natural gas, and then controls hydrate
The effect of decomposition.The characteristics of voltage drop method maximum is continuous agitation that need not be expensive, thus it is likely to become and opened on a large scale from now on
Adopt one of effective ways of gas hydrates.
But exploitation of gas hydrates technology is opened gas hydrates still in stage of fumbling, countries in the world at present
Hair not yet makes the standard of a sleeve forming, and the method for in-house laboratory investigation is still the main body of combustible ice production technique research,
CN101710088A announces a kind of gas hydrates generation and decomposition test method and device, passes through one-dimensional back-up sand resistivity mould
Type pipe implements simulated experiment to gas hydrates.CN103206210B announces a kind of hot fluid pressure break exploitation of gas hydrate
The experimental provision of Tibetan, supervised by the axle frac system of hydrate core three, pressure break injected system, natural gas extraction system and sound emission
Examining system implements gas hydrates simulated experiment.CN101246117B announces a kind of gas hydrates synthesis and macromechanics
Property comprehensive experimental system, by gas hydrates synthesis module, mechanical property experiment module and microscopic measurement module to day
Right gas hydrate carries out simulated experiment.Above-mentioned patent equipment can not simulation water horizontal well exploitation of gas hydrate, and be unable to reach
Visualized experiment.CN105909224A announces a kind of experiment dress of dual horizontal well electrical heating secondary buck exploitation of gas hydrate
Put and method of work, pass through gas injection system, power system, gas hydrates reaction system, data monitoring processing system, gas-liquid
Separate measurement system carries out simulated experiment to gas hydrates.But stored up using power system heated natural gas hydrate merely
Tibetan can not simulate horizontal well displacement operation in actual production.In view of this, the present inventor proposes that a kind of simulation parallel water horizontal well mixes
The device of exploitation of gas hydrate is mutually driven, to meet the requirement of current three-dimensional simulation experimental provision, and overcomes prior art
Defect, and apparatus of the present invention main body is transparent visual material, can drive exploitation of gas hydrate to mixed phase and carry out finer sight
Examine.
The content of the invention
The invention discloses a kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate, device includes supplying
Gas system, liquid-supplying system, simulation system, injected system, production system and monitoring system, apparatus of the present invention are made using back-up sand case
For the main body of simulation system, natural gas is supplied into simulation system by air supply system, liquid-supplying system and water forms gas water
Compounds, carbon dioxide and chemical agent are injected by injected system and drive exploitation to simulate mixed phase, by production system to produced gas and
Water is implemented to collect, and implements complete monitoring to experimentation by monitoring system, experimental provision of the present invention is using three dimensional constitution to mixed
Mutually drive exploitation of gas hydrate and implement simulation, withdrawal mechanism research is driven to gas hydrates mixed phase has certain guidance to make
With.
Wherein described air supply system is connected with simulation system, and the liquid-supplying system is connected with simulation system, the note
Enter system with simulation system to be connected, the production system is connected with simulation system, the monitoring system respectively with the confession
Gas system, liquid-supplying system, simulation system, injected system are connected with production system.
The air supply system is used to provide natural gas for synthesis of natural gas hydrate inside the simulation system；The feed flow
System is used to provide water for synthesis of natural gas hydrate inside the simulation system；The injected system is used for
System injection carbon dioxide and chemical agent, to simulate injection well in actual production；The production system is used to produce the simulation
Caused natural gas and water in system, and the output gas yield, aquatic products amount are analyzed, and the component of the analysis output gas,
To simulate producing well in actual production；The simulation system be used for simulate gas hydrates pressure, temperature, saturation degree,
Permeability and conventional formation parameter, and simulate the parallel water horizontal well hole pattern in gas hydrates；The monitoring system
For air supply system, liquid-supplying system, simulation system, injected system, production system running parameter, writing task described in real-time collecting
Data caused by parameter, and experimental implementation is controlled by monitoring system.
Preferably, air supply system of the invention includes natural gas bottle, control valve, supercharging device, gas flowmeter, pressure
Sensor, temperature sensor, high pressure line, tap valve；Natural gas bottle outlet is connected to supercharging device by high pressure line and entered
Mouthful, control valve plays the feed speed effect of regulation natural gas, supercharging device outlet between natural gas bottle and supercharging device
Tap valve inlet is connected to by high pressure line, gas flowmeter, pressure sensor, temperature sensor be located at supercharging device with
Between tapping valve, play a part of monitoring gas flow, pressure, temperature, tap valve export is connected with the simulation system
Connect.
Natural gas bottle is conventional chambers experimental facilities in the air supply system, the control valve be with signal transmission and
The traditional regulation valve arrangement of remote control function, the gas flowmeter, pressure sensor, temperature sensor are with signal
The conventional chambers experimental facilities of transfer function, the tap valve is the conventional chambers experimental facilities with diverter function, described
Supercharging device can be constant speed pump group, constant current pump group, constant pressure pump group and other application in the pump group of laboratory experiment.
Preferably, liquid-supplying system of the invention includes water storage device, control valve, supercharging device, fluid flowmeter, pressure
Sensor, temperature sensor, high pressure line, tap valve；Water storage device outlet is connected to supercharging device by high pressure line and entered
Mouthful, control valve plays the feed speed effect of regulation water between water storage device and supercharging device, and supercharging device outlet passes through
High pressure line is connected to tap valve inlet, and fluid flowmeter, pressure sensor, temperature sensor are located at supercharging device and tap
Between valve, play a part of monitoring fluid flow, pressure, temperature, tap valve export is connected with the simulation system.
In the liquid-supplying system water storage device include water bottle, intermediate receptacle, beaker and other there is the routine of water storage function
Laboratory experiment equipment, the water storage device internal liquid include stratum water, seawater, simulated formation water and other experimental waters, institute
Control valve is stated as the traditional regulation valve arrangement with signal transmission and remote control function, the fluid flowmeter, pressure
Sensor, temperature sensor are the conventional chambers experimental facilities with signal transfer functions, and the tap valve is with shunting
The conventional chambers experimental facilities of function, the supercharging device can be constant speed pump group, constant current pump group, constant pressure pump group and other should
Pump group for laboratory experiment.
Preferably, injected system of the invention include dioxide bottle, control valve, supercharging device, gas flowmeter,
Fluid flowmeter, pressure sensor, temperature sensor, high pressure line, three-way connection, check-valves, liquid intermediate receptacle, stirring dress
Put, injection well attachment means；Dioxide bottle outlet is connected to supercharging device entrance by high pressure line, and control valve is located at
Between dioxide bottle and supercharging device, the effect of regulation of carbon dioxide feed speed is played, supercharging device outlet passes through high pressure
Pipeline is connected to three-way connection entrance, gas flowmeter, pressure sensor, temperature sensor, check-valves be located at supercharging device with
Between three-way connection, play a part of monitoring gas flow, pressure, temperature, and prevent carbon dioxide from flowing back；Liquid intermediate receptacle
Outlet is connected to supercharging device entrance by high pressure line, and control valve rises between liquid intermediate receptacle and supercharging device
To regulation liquid feed speed effect, liquid intermediate receptacle exit is provided with check-valves, prevents liquid from flowing back, supercharging device outlet
Agitating device entrance is connected by high pressure line, agitating device is used to the liquid agitation that supercharging device is fed chemistry is uniformly made
Agent, agitating device outlet are connected to three-way connection entrance, fluid flowmeter, pressure sensor, TEMP by high pressure line
Device, check-valves play a part of the chemical agent flux of monitoring, pressure, temperature, and prevent between agitating device and three-way connection
Chemical agent flows back；Three-way connection is connected to injection well attachment means, injection well attachment means and the simulation by high pressure line
System is connected.
Dioxide bottle is conventional chambers experimental facilities in the injected system, and the control valve is to be passed with signal
Defeated and remote control function traditional regulation valve arrangement, the gas flowmeter, fluid flowmeter, pressure sensor, temperature
Sensor is the conventional chambers experimental facilities with signal transfer functions, and the supercharging device can be constant speed pump group, constant flow pump
In the pump group of laboratory experiment, the check-valves is the conventional room with individual event circulating function for group, constant pressure pump group and other application
Interior experimental facilities, the agitating device are the conventional chambers experimental facilities with agitating function, and the injection well attachment means are
Conventional chambers experimental facilities with connection simulated injection well head and sealing function.
Preferably, production system of the invention includes producing well attachment means, control valve, pressure sensor, temperature biography
Sensor, high pressure line, back-pressure valve, gas-liquid separator, water storage device, gas intermediate receptacle, gas component in-line analyzer；Back pressure
Valve inlet is connected with producing well attachment means by high pressure line, and control valve, pressure sensor, temperature sensor are positioned at production
Between well attachment means and back-pressure valve, play a part of monitoring output object pressure, temperature, back-pressure valve plays simulated formation pressure work
With, the back pressure valve outlet is connected with gas-liquid separator, and output object is implemented gas-liquid separation by gas-liquid separator, and by output water
Water storage device is fed, output gas feeds gas intermediate receptacle, and gas component in-line analyzer is connected with gas intermediate receptacle, uses
Gas composition analysis is carried out in the output gas for producing the simulation system；Producing well attachment means are connected with simulation system,
Output object caused by simulation system work enters production system by producing well attachment means.
Producing well attachment means are the conventional room with connection simulated production well head and sealing function in the production system
Interior experimental facilities, the control valve be with signal transmission and remote control function traditional regulation valve arrangement, the pressure
Force snesor, temperature sensor are the conventional chambers experimental facilities with signal transfer functions, and the back-pressure valve is with back pressure
The conventional chambers experimental facilities of function, the gas-liquid separator are the conventional chambers experimental facilities with gas-liquid separating function, institute
State water storage device include water bottle, intermediate receptacle, beaker and other there is the conventional chambers experimental facilities of water storage function, the gas
Component in-line analyzer is the conventional chambers experimental facilities with gas composition analysis and signal transfer functions.
Preferably, simulation system of the invention include insulating box, reaction vessel, simulated injection well head, simulated production well head,
Air supply inlet, feed flow entrance, temperature measuring equipment, pressure tester, bolt hole, upper cover plate, simulation wellbore hole, simulation sand body；Reaction vessel
For the high pressure resistant clear sheet of cuboid, the upper cover plate is located at the reaction vessel top, formed by bolt hole with bolt seal
Cuboid confined space, simulated injection well head, simulated production well head, temperature measuring equipment interface, pressure tester interface are respectively positioned on
Lid surface, the air supply inlet, feed flow entrance are located at reaction vessel surface, and simulation sand body is located at reaction vessel interior, simulated
Inside simulation sand body, the temperature measuring equipment and the pressure tester are located inside simulation sand body pit shaft, the reaction vessel,
Simulated injection well head, simulated production well head, air supply inlet, feed flow entrance, temperature measuring equipment, pressure tester, bolt hole, upper cover plate,
Simulation wellbore hole, simulation sand body are respectively positioned in insulating box.
The reaction vessel is the high pressure resistant high strength glass of rectangular shape, and the length range on each of which side is 1-2m, thick
Degree scope is 3-10cm, highest simulated storage pressure 35Mpa, and the reaction vessel and upper cover plate contact surface are provided with sealing ring, use
In increase simulation system sealing, the sealing ring material is high pressure resistant rubber, and the temperature measuring equipment is with temperature monitoring work(
The conventional chambers experimental facilities of energy and signal transfer functions, the pressure tester are to transmit work(with pressure monitoring function and signal
The conventional chambers experimental facilities of energy, the simulation sand body include quartz sand, rock core powder and other conventional simulations storage sand body.
The simulation wellbore hole includes stainless steel tube, sealing original paper and drawing out type filler, will be simulated by sealing original paper
Pit shaft is fixed on upper cover plate surface, and stainless steel tube includes simulation straight well section, dummy level section and analogue perforation, natural to simulate
Gas hydrate storage in horizontal well, the drawing out type filler include rubber bar, nylon rod, and other have it is low temperature resistant,
With deformation function, the filler with some strength.
The specifically used method of simulation wellbore hole is：When simulation sand body is added in reaction vessel, simulation wellbore hole is placed
In sand body, drawing out type filler is positioned over inside stainless steel tube, and natural gas and water are fed into reaction vessel and keeps low
Warm high pressure, after simulation sand body is internally formed gas hydrates and keeps stable, drawing out type filler is taken out, and will sealing
Original paper modulates closure state.
Valve is tapped in the air supply system by high pressure line with air supply inlet to be connected, and is divided in the liquid-supplying system institute
Connect valve by high pressure line with feed flow entrance to be connected, injection well attachment means and simulated injection well head in the injected system
It is connected, producing well attachment means are connected with simulated production well head in the production system.
Preferably, monitoring system of the invention includes computer and transmission cable, the air supply system, liquid-supplying system, mould
Plan system, injected system, production system are connected by transmission cable with computer, to collection is warm in real time in experimentation
The gentle body component of degree, pressure, output logistics capacity and other experimental datas, and experimental implementation is controlled by monitoring system.
A kind of simulation parallel water horizontal well mixed phase of the embodiment of the present invention drives the device beneficial effect of exploitation of gas hydrate
For：
1) air supply system and liquid-supplying system are separate in the present invention, have multiple air supply inlets and confession on reaction vessel surface
Liquid entrance, the natural gas and moisture portion for making injection reaction vessel interior are more uniformly distributed, and separate feeding pipe is to mould
It is higher that precision is injected when natural gas and water are injected in plan system, by controlling air supply system and liquid-supplying system injection rate, can be simulated
Different gas hydrates saturation degree storages.
2) injected system and production system of the present invention are all connected to the simulation wellbore hole entrance on upper cover plate surface, and simulation wellbore hole
It is in parallel water horizontal well formula branch in reaction vessel interior, it is natural can more accurately simulates parallel water horizontal well exploitation in actual production
The design parameter of gas hydrate.
3) reaction vessel main body is transparent in simulation system of the present invention, it is observed that mixed phase drives the hydration that taps natural gas
The change of different time sections simulation sand body during thing, driving exploitation of gas hydrate study mechanism to mixed phase has certain guidance to make
With.
4) application based on monitoring system, can effectively gather in experiment temperature in different time section, pressure, Liquid output with
And generation gas component, Mathematical Model Analysis can be carried out in input computer in real time, for by Physical simulation experiment and Numerical-Mode
Draft experiment result is combined.
5) use based on simulation wellbore hole, mould effectively can be carried out to horizontal well hole pattern, perforating modes in actual production
Intend, experimental precision can be effectively improved.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those skilled in the art, it can also be obtained on the premise of not paying creative work according to these accompanying drawings other attached
Figure.
Fig. 1 is the structural representation of experimental provision.
Fig. 2 is air supply system detailed construction schematic diagram.
Fig. 3 is liquid-supplying system detailed construction schematic diagram.
Fig. 4 is injected system detailed construction schematic diagram.
Fig. 5 is production system detailed construction schematic diagram.
Fig. 6 is simulation system detailed construction schematic diagram.
Fig. 7 is simulation system side view.
Fig. 8 is that upper cover plate arranges schematic diagram.
Fig. 9 is simulation wellbore hole structural representation.
Drawing reference numeral：1st, natural gas bottle 2, control valve 3, supercharging device 4, gas flowmeter 5, pressure sensor 6, temperature
Sensor 7, high pressure line 8, tap valve 9, water storage device 10, fluid flowmeter 11, dioxide bottle 12, check-valves 13,
Three-way connection 14, water intermediate receptacle 15, methanol intermediate receptacle 16, ethanol intermediate receptacle 17, agitating device 18, injection well connection dress
Put 19, back-pressure valve 20, gas-liquid separator 21, gas intermediate receptacle 22, gas component in-line analyzer 23, producing well attachment means
24th, reaction vessel 25, simulated injection well head 26, simulated production well head 27, air supply inlet 28, feed flow entrance 29, temperature measuring equipment 30,
Pressure tester 31, bolt hole 32, upper cover plate 33, simulation wellbore hole 34, simulation sand body 35, insulating box 36, drawing out type filler 37,
Seal original paper 38, simulation straight well section 39, dummy level section 40, analogue perforation 41, stainless steel tube.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
As shown in figure 1, it is a kind of knot simulated parallel water horizontal well mixed phase and drive the device of exploitation of gas hydrate of the present invention
Structure schematic diagram, including air supply system, liquid-supplying system, simulation system, injected system, production system and monitoring system；Wherein institute
State air supply system with simulation system to be connected, the liquid-supplying system is connected with simulation system, and the injected system is with simulation
System is connected, and the production system is connected with simulation system, the monitoring system respectively with the air supply system, feed flow system
System, simulation system, injected system are connected with production system.
The air supply system is used to provide natural gas for synthesis of natural gas hydrate inside the simulation system；The feed flow
System is used to provide water for synthesis of natural gas hydrate inside the simulation system；The injected system is used for
System injection carbon dioxide and chemical agent, to simulate injection well in actual production；The production system is used to produce the simulation
Caused natural gas and water in system, and the output gas yield, aquatic products amount are analyzed, and the component of the analysis output gas,
To simulate producing well in actual production；The simulation system be used for simulate gas hydrates pressure, temperature, saturation degree,
Permeability and conventional parameter, and simulate the parallel water horizontal well hole pattern in gas hydrates；The monitoring system is used for
Air supply system, liquid-supplying system, simulation system, injected system, production system running parameter, writing task parameter described in real-time collecting
Caused data, and experimental implementation is controlled by monitoring system.
The device for driving exploitation of gas hydrate to a kind of above-mentioned simulation parallel water horizontal well mixed phase below is carried out further
Description：
As shown in Fig. 2 in the present embodiment, air supply system includes natural gas bottle 1, control valve 2, supercharging device 3, gas stream
Gauge 4, pressure sensor 5, temperature sensor 6, high pressure line 7, tap valve 8.
The outlet of natural gas bottle 1 is connected to the entrance of supercharging device 3 by high pressure line 7, and control valve 2 is located at natural gas bottle 1
Between supercharging device 3, regulation natural gas feed speed effect is played, the outlet of supercharging device 3 is connected to point by high pressure line 7
The entrance of valve 8 is connect, gas flowmeter 4, pressure sensor 5, temperature sensor 6 are located between supercharging device 3 and tap valve 8,
Play a part of monitoring gas flow, pressure, temperature, the outlet of tap valve 8 is connected with the simulation system, as to simulation
System supplies natural gas.
As shown in figure 3, in the present embodiment, liquid-supplying system includes water storage device 9, control valve 2, supercharging device 3, liquid flow
Gauge 10, pressure sensor 5, temperature sensor 6, high pressure line 7, tap valve 8.
The outlet of water storage device 9 is connected to the entrance of supercharging device 3 by high pressure line 7, and control valve 2 is located at water storage device 9
Between supercharging device 3, the feed speed effect of regulation water is played, the outlet of supercharging device 3 is connected to tap valve by high pressure line 7
8 entrances of door, fluid flowmeter 10, pressure sensor 5, temperature sensor 6 are located between supercharging device 3 and tap valve 8, played
The effect of fluid flow, pressure, temperature is monitored, the outlet of tap valve 8 is connected with the simulation system, as to simulation system
Supply water.
As shown in figure 4, in the present embodiment, injected system include dioxide bottle 11, control valve 2, supercharging device 3,
Gas flowmeter 4, fluid flowmeter 10, pressure sensor 5, temperature sensor 6, high pressure line 7, three-way connection 13, check-valves
12nd, water intermediate receptacle 14, methanol intermediate receptacle 15, ethanol intermediate receptacle 16, agitating device 17, injection well attachment means 18.
The outlet of dioxide bottle 11 is connected to the entrance of supercharging device 3 by high pressure line 7, and control valve 2 is located at dioxy
Change between carbon gas cylinder 11 and supercharging device 3, play the effect of regulation of carbon dioxide feed speed, the outlet of supercharging device 3 passes through high pressure
Pipeline 7 is connected to the entrance of three-way connection 13, and gas flowmeter 4, pressure sensor 5, temperature sensor 6, check-valves 12 are positioned at increasing
Between pressure device 3 and three-way connection 13, play a part of monitoring gas flow, pressure, temperature, and prevent carbon dioxide from flowing back；
Water intermediate receptacle 14, methanol intermediate receptacle 15, the outlet of ethanol intermediate receptacle 16 are connected to supercharging device 3 by high pressure line 7 and entered
Mouthful, control valve 2 is in water between a container 14, methanol intermediate receptacle 15, ethanol intermediate receptacle 16 and supercharging device 3, water
Intermediate receptacle 14, methanol intermediate receptacle 15, the exit of ethanol intermediate receptacle 16 are provided with check-valves 12, prevent liquid from flowing back, supercharging
The outlet of device 3 connects the entrance of agitating device 17 by high pressure line 7, and agitating device 17 is used for the liquid for feeding supercharging device 3
Stir and chemical agent is made, the outlet of agitating device 17 is connected to the entrance of three-way connection 13, fluid flowmeter by high pressure line 7
10th, pressure sensor 5, temperature sensor 6, check-valves 12 play monitoringization between agitating device 17 and three-way connection 13
The effect of agent flux, pressure, temperature is learned, and prevents chemical agent from flowing back；Three-way connection 13 is connected to injection well by high pressure line 7
Attachment means 18, injection well attachment means 18 are connected with the simulation system.
As shown in figure 5, in the present embodiment, production system includes producing well attachment means 23, control valve 2, pressure sensing
Device 5, temperature sensor 6, high pressure line 7, back-pressure valve 19, gas-liquid separator 20, water storage device 9, gas intermediate receptacle 21, gas
Component in-line analyzer 22.
The entrance of back-pressure valve 19 is connected with producing well attachment means 23 by high pressure line 7, control valve 2, pressure sensor
5th, temperature sensor 6 plays monitoring output object pressure, the work of temperature between producing well attachment means 23 and back-pressure valve 19
With back-pressure valve 19 plays the effect of simulated formation pressure, and the outlet of back-pressure valve 19 is connected with gas-liquid separator 20, gas-liquid separation
Output object is implemented gas-liquid separation by device 20, and output water is fed into water storage device 9, and output gas feeds gas intermediate receptacle 21, gas
Body component in-line analyzer 22 is connected with gas intermediate receptacle 21, and the output gas for the simulation system to be produced enters promoting the circulation of qi
Body component analysis, producing well attachment means 23 are connected with simulation system, and output object caused by simulation system work passes through production
Well attachment means 23 enter production system.
As shown in fig. 6, in the present embodiment, simulation system include insulating box 35, reaction vessel 24, simulated injection well head 25,
Simulated production well head 26, air supply inlet 27, feed flow entrance 28, temperature measuring equipment 29, pressure tester 30, bolt hole 31, upper cover plate 32,
Simulation wellbore hole 33, simulation sand body 34.
Reaction vessel 24 is the high pressure resistant clear sheet of cuboid, and upper cover plate 32 is located at the top of reaction vessel 24, by bolt hole
The 31 cuboid confined spaces formed with bolt seal, simulated injection well head 25, simulated production well head 26, temperature measuring equipment 29, survey
Pressure device 30 is respectively positioned on the surface of upper cover plate 32, and the air supply inlet 27, feed flow entrance 28 are located at the surface of reaction vessel 24, simulate sand
Body 34 is located inside reaction vessel 24, and simulation wellbore hole 33 is inside simulation sand body 34, the temperature measuring equipment 29 and the pressure measurement
Device 30 positioned at simulation sand body 34 inside, the reaction vessel 24, simulated injection well head 25, simulated production well head 26, supply into
Mouth 27, feed flow entrance 28, temperature measuring equipment 29, pressure tester 30, bolt hole 31, upper cover plate 32, simulation wellbore hole 33, simulation sand body 34
It is respectively positioned in insulating box 35.
As shown in fig. 7, it is simulation system side view, in the surface air supply inlet 27 of reaction vessel 24, feed flow entrance 28 in mistake
Position alignment branch, as shown in figure 8, arranging schematic diagram, simulated injection well head 25, simulated production well head 26, thermometric dress for upper cover plate
The branch of 29, pressure tester 30 is put in the surface of upper cover plate 32.
As shown in figure 9, be simulation wellbore hole structural representation, simulation wellbore hole 33 include stainless steel tube 41, sealing original paper 37 and
Drawing out type filler 36, simulation wellbore hole 33 is fixed on the surface of upper cover plate 32 by sealing original paper 37, stainless steel tube 41 includes
Straight well section 38, dummy level section 39 and analogue perforation 40 are simulated, to simulate the horizontal well in gas hydrates storage.
In the present embodiment, the monitoring system includes computer (in figure not depending on) and transmission cable (not regarded in figure), institute
Air supply system, liquid-supplying system, simulation system, injected system, production system is stated by transmission cable with computer to be connected, to
Real-time collecting temperature, pressure, the gentle body component of output logistics capacity and other experimental datas in experimentation, and be by monitoring
System control experimental implementation.
Device of embodiment of the present invention workflow is introduced as follows below based on above-mentioned accompanying drawing, work of the embodiment of the present invention
It is divided into following steps as flow：
Step 1：Actual gas hydrates are simulated by simulation system to store, the filling simulation sand in reaction vessel 24
Body 34 paves compacting, two simulation wellbore holes 33 of tripping in during sand body 34 is simulated in filling, simulated injection well head 25, simulation is given birth to
Production well head 26 is connected with upper cover plate 32, sealed, inside temperature measuring equipment 29 and the tripping in of pressure tester 30 simulation sand body 34, by thermometric
Device 29 and pressure tester 30 are connected with upper cover plate 32, sealed, by bolt hole 31 and bolt by reaction vessel 24 and upper cover plate
32, which carry out bolt seal, forms simulated formation space, and simulation system is put into insulating box 35；Simulate the dosage of sand body 34, simulation wellbore hole
33 length and depth of setting and other conventional parameters are adjusted according to actual storage parameter.
Natural gas and water generation gas hydrates, supply are fed into simulation system by air supply system, liquid-supplying system
Supercharging device 3 in system, liquid-supplying system provides operating pressure for simulation system, and insulating box 35 is adjusted to analog temperature, will
Control valve 2 is opened in air supply system, and natural gas enters in supercharging device 3 and is pressurized in natural gas bottle 1, is connected by tapping valve 8
Air supply inlet 27 in grafting simulation system, open supercharging device 3 and feed natural gas in simulation system, pass through gas flowmeter 4, pressure
Monitoring supply parameter, infeed natural gas close tap valve 8 with shape after reaching scheduled volume in real time for force snesor 5, temperature sensor 6
Into confined space；Control valve in liquid-supplying system 2 is opened, supply water, which enters in supercharging device 3, in water storage device 9 is pressurized, and leads to
Cross tap valve 8 and connect feed flow entrance 28 in simulation system, opening supercharging device 3 will supply in water infeed simulation system, pass through
Fluid flowmeter 10, pressure sensor 5, temperature sensor 6 monitor feed flow parameter in real time, and supply water reaches closing point after scheduled volume
Valve 8 is connect to form confined space；After natural gas and supply water enter simulation system, simulation system constant temperature is placed, it is to be generated
Into gas hydrates physical property it is stable after carry out next step operation.
Step 2：Decompression exploitation is implemented by production system, drawing out type filler 36 in simulation wellbore hole 33 is extracted out；Will
Producing well attachment means 23 are connected respectively with simulated injection well head 25, simulated production well head 26 in production system, by back-pressure valve 19
Simulated storage pressure is modulated, control valve 2 is opened, implements simulation decompression exploitation, it is real to output object by gas-liquid separator 20
Gas-liquid separation is applied, recovered water is collected by water storage device 9, output gas is collected by gas intermediate receptacle 21,
Gas composition analysis is implemented to output gas by gas component in-line analyzer 22, passes through pressure sensor 5, temperature sensor 6
The decompression operational parameter of record simulation in real time；Pass through the exploitation of record decompression in real time of temperature measuring equipment in simulation system 29, pressure tester 30
During operational parameter in simulation system.
Step 3：Mixed phase drive is implemented to simulation system by injected system, by simulated injection well head 25 and injected system
Injection well attachment means 18 are connected, the control valve 2 that unlatching is connected with dioxide bottle 11, two in dioxide bottle 11
Carbonoxide, which enters in supercharging device 3, to be pressurized, and simulated injection well is injected carbon dioxide into three-way connection 13 by check-valves 12
Mouth 25, injection parameter is monitored by gas flowmeter 4, pressure sensor 5, temperature sensor 6 in real time, feed carbon dioxide and reach
Control valve 2 is closed after scheduled volume；Unlatching is connected with water intermediate receptacle 14, methanol intermediate receptacle 15, ethanol intermediate receptacle 16
Control valve 2, water, methanol, ethanol are fed into agitating device 17 by supercharging device 3 by predetermined amount, passed through in agitating device 17
Stirring forms chemical agent, and enter three-way connection 13 by check-valves 12 injects simulated injection well head 25 by chemical agent, passes through liquid
Flowmeter 10, pressure sensor 5, temperature sensor 6 monitor injection parameter in real time, feed after chemical agent reaches scheduled volume and close tune
Save valve 2；Repeat the above steps to realize that carbon dioxide, chemical agent alternately inject.
Output object collection is implemented by the production system being connected with simulated production well head 26, back-pressure valve 19 is modulated into simulation storage
Pressure is hidden, control valve 2 is opened, gas-liquid separation is implemented to output object by gas-liquid separator 20, by water storage device 9 to adopting
Water outlet is collected, and output gas is collected by gas intermediate receptacle 21, by gas component in-line analyzer 22 to production
Outlet implements gas composition analysis, passes through pressure sensor 5, temperature sensor 6 the decompression operational parameter of record simulation in real time；Pass through
Temperature measuring equipment 29, pressure tester 30 record in recovery process operational parameter in simulation system in real time in simulation system.
Above-mentioned steps carry out during, the monitoring system by temperature measuring equipment 29, pressure tester 30, pressure sensor 5,
Temperature sensor 6, gas flowmeter 4, fluid flowmeter 10 and gas component in-line analyzer 22 are monitored in real time, and are recorded
Each stage design parameter is tested, experimentation is manipulated by connecting control valve 2.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, the guarantor being not intended to limit the present invention
Scope is protected, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., should be included in this
Within the protection domain of invention.
Claims (7)
- A kind of 1. device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate, it is characterised in that the experimental provision Including air supply system, liquid-supplying system, simulation system, injected system, production system and monitoring system；Wherein described air supply system is connected with simulation system, and the liquid-supplying system is connected with simulation system, the injection system System is connected with simulation system, and the production system is connected with simulation system, and the monitoring system is respectively with the supply System, liquid-supplying system, simulation system, injected system are connected with production system；The air supply system is used to provide natural gas for synthesis of natural gas hydrate inside the simulation system；The liquid-supplying system For providing water for synthesis of natural gas hydrate inside the simulation system；The injected system is used to note for the simulation system Enter carbon dioxide and chemical agent, to simulate injection well in actual production；The production system is used to produce the simulation system In caused natural gas and water, and analyze the output gas yield, aquatic products amount, and the component of the analysis output gas, to Simulate producing well in actual production；The simulation system is used to simulate gas hydrates pressure, temperature, saturation degree, infiltration Rate and conventional formation parameter, and simulate the parallel water horizontal well hole pattern in gas hydrates；The monitoring system is used for Air supply system, liquid-supplying system, simulation system, injected system, production system running parameter, writing task parameter described in real-time collecting Caused data, and experimental implementation is controlled by monitoring system.
- 2. a kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate as claimed in claim 1, its feature It is, the air supply system includes natural gas bottle, control valve, supercharging device, gas flowmeter, pressure sensor, temperature and passed Sensor, high pressure line, tap valve；Natural gas bottle outlet is connected to supercharging device entrance by high pressure line, and control valve is located at natural gas bottle and supercharging device Between, the feed speed effect of regulation natural gas is played, supercharging device outlet is connected to tap valve inlet, gas by high pressure line Flowmeter body, pressure sensor, temperature sensor are located between supercharging device and tap valve, play monitoring gas flow, pressure The effect of power, temperature, tap valve export are connected with the simulation system.
- 3. a kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate as claimed in claim 1, its feature It is, the liquid-supplying system includes water storage device, control valve, supercharging device, fluid flowmeter, pressure sensor, temperature and passed Sensor, high pressure line, tap valve；Water storage device outlet is connected to supercharging device entrance by high pressure line, and control valve is located at water storage device and supercharging device Between, the feed speed effect of regulation water is played, supercharging device outlet is connected to tap valve inlet, liquid flow by high pressure line Gauge, pressure sensor, temperature sensor are located between supercharging device and tap valve, play monitoring fluid flow, pressure, temperature The effect of degree, tap valve export are connected with the simulation system.
- 4. a kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate as claimed in claim 1, its feature It is, the injected system includes dioxide bottle, control valve, supercharging device, gas flowmeter, fluid flowmeter, pressure Force snesor, temperature sensor, high pressure line, three-way connection, check-valves, liquid intermediate receptacle, agitating device, injection well connection Device；Dioxide bottle outlet is connected to supercharging device entrance by high pressure line, control valve be located at dioxide bottle with Between supercharging device, the effect of regulation of carbon dioxide feed speed is played, supercharging device outlet is connected to threeway by high pressure line Fitting inlet, gas flowmeter, pressure sensor, temperature sensor, check-valves rise between supercharging device and three-way connection To the effect of monitoring gas flow, pressure, temperature, and prevent carbon dioxide from flowing back；The outlet of liquid intermediate receptacle passes through high-voltage tube Line is connected to supercharging device entrance, and control valve plays regulation liquid supply between liquid intermediate receptacle and supercharging device Speed is acted on, and liquid intermediate receptacle exit is provided with check-valves, prevents liquid from flowing back, and supercharging device outlet is connected by high pressure line Agitating device entrance is connect, agitating device is used to the liquid agitation that supercharging device is fed chemical agent is uniformly made, and agitating device goes out Mouth is connected to three-way connection entrance by high pressure line, and fluid flowmeter, pressure sensor, temperature sensor, check-valves are located at Between agitating device and three-way connection, play a part of the chemical agent flux of monitoring, pressure, temperature, and prevent chemical agent from flowing back；Three Pass joint is connected to injection well attachment means by high pressure line, and injection well attachment means are connected with the simulation system.
- 5. a kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate as claimed in claim 1, its feature Be, the production system include producing well attachment means, control valve, pressure sensor, temperature sensor, high pressure line, Back-pressure valve, gas-liquid separator, water storage device, gas intermediate receptacle, gas component in-line analyzer；Back pressure valve inlet is connected with producing well attachment means by high pressure line, control valve, pressure sensor, temperature sensor Between producing well attachment means and back-pressure valve, play a part of monitoring output object pressure, temperature, back-pressure valve plays simulation ground Stressor layer acts on, and the back pressure valve outlet is connected with gas-liquid separator, and output object is implemented gas-liquid separation by gas-liquid separator, and Output water is fed into water storage device, output gas feeds gas intermediate receptacle, gas component in-line analyzer and gas intermediate receptacle It is connected, the output gas for the simulation system to be produced carries out gas composition analysis；Producing well attachment means and simulation system System is connected, and output object caused by simulation system work enters production system by producing well attachment means.
- 6. a kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate as claimed in claim 1, its feature It is, the simulation system includes insulating box, reaction vessel, simulated injection well head, simulated production well head, air supply inlet, feed flow Entrance, temperature measuring equipment, pressure tester, bolt hole, upper cover plate, simulation wellbore hole, simulation sand body；Reaction vessel is the high pressure resistant clear sheet of cuboid, and the upper cover plate is located at the reaction vessel top, used by bolt hole The cuboid confined space that bolt seal is formed, simulated injection well head, simulated production well head, temperature measuring equipment interface, pressure tester Interface is respectively positioned on upper cover plate surface, and the air supply inlet, feed flow entrance are located at reaction vessel surface, and simulation sand body holds positioned at reaction Inside device, inside simulation sand body, the temperature measuring equipment and the pressure tester are located in simulated formation sand body simulation wellbore hole Portion, the reaction vessel, simulated injection well head, simulated production well head, air supply inlet, feed flow entrance, temperature measuring equipment, pressure measurement dress Put, bolt hole, upper cover plate, simulation wellbore hole, simulation sand body be respectively positioned in insulating box；Valve is tapped in the air supply system by high pressure line with air supply inlet to be connected, and valve is tapped in the liquid-supplying system institute Door is connected by high pressure line with feed flow entrance, and injection well attachment means are connected with simulated injection well head in the injected system Connect, producing well attachment means are connected with simulated production well head in the production system.
- 7. a kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate as claimed in claim 1, its feature It is, the monitoring system includes computer and transmission cable, the air supply system, liquid-supplying system, simulation system, injection system System, production system are connected by transmission cable with computer, to real-time collecting temperature, pressure, output in experimentation Logistics capacity and gas component and other experimental datas, and experimental implementation is controlled by monitoring system.
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