CN107575222A - A kind of device for simulating parallel water horizontal well chemical flooding exploitation of gas hydrate - Google Patents
A kind of device for simulating parallel water horizontal well chemical flooding exploitation of gas hydrate Download PDFInfo
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- CN107575222A CN107575222A CN201710992236.1A CN201710992236A CN107575222A CN 107575222 A CN107575222 A CN 107575222A CN 201710992236 A CN201710992236 A CN 201710992236A CN 107575222 A CN107575222 A CN 107575222A
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Abstract
The invention discloses a kind of device for simulating parallel water horizontal well chemical flooding exploitation of gas hydrate, it is related to gas hydrates development field, is particularly used for simulating a kind of indoor experimental apparatus of parallel water horizontal well chemical flooding exploitation of gas hydrate.Device includes air supply system, liquid-supplying system, simulation system, flood pattern, 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, driven water-replacing and chemical agent are injected by flood pattern to exploit to simulate chemical flooding, 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 is implemented to simulate using three dimensional constitution to chemical flooding exploitation of gas hydrate, there is certain directive function to the research of gas hydrates chemical flooding withdrawal mechanism.
Description
Technical field
The invention discloses a kind of device for simulating parallel water horizontal well chemical flooding 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 of parallel water horizontal well chemical flooding 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 flood pattern, 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 a kind of simulation parallel water horizontal well
The device for driving exploitation of gas hydrate is learned, 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 carry out finer sight to chemical flooding exploitation of gas hydrate
Examine.
The content of the invention
The invention discloses a kind of device for simulating parallel water horizontal well chemical flooding exploitation of gas hydrate, device includes supplying
Gas system, liquid-supplying system, simulation system, flood pattern, 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
Compound, driven water-replacing and chemical agent are injected by flood pattern and exploited with simulating chemical flooding, by production system to produced gas and water
Implement to collect, complete monitoring is implemented to experimentation by monitoring system, experimental provision of the present invention is using three dimensional constitution to chemistry
Drive exploitation of gas hydrate and implement simulation, have certain directive function to the research of gas hydrates chemical flooding withdrawal mechanism.
Wherein described air supply system is connected with simulation system, and the liquid-supplying system is connected with simulation system, the note
Water system is connected with simulation system, and the production system is connected with simulation system, the monitoring system respectively with the confession
Gas system, liquid-supplying system, simulation system, flood pattern 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 flood pattern is used for
System injection driven water-replacing and chemical agent, to simulate water injection well in actual production；The production system is used to produce the simulation system
Caused natural gas and water in system, and the output gas yield, aquatic products amount are analyzed, to simulate producing well in actual production；Institute
State simulation system to be used to 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 is used for air supply system described in real-time collecting, supplied
Liquid system, simulation system, flood pattern, production system running parameter, data caused by writing task parameter, and pass through monitoring
System controls experimental implementation.
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, flood pattern of the invention includes water storage device, control valve, supercharging device, fluid flowmeter, pressure
Sensor, temperature sensor, high pressure line, three-way connection, check-valves, liquid intermediate receptacle, agitating device, water injection well connection dress
Put；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 driven water-replacing is played, supercharging device outlet is connected to three-way connection entrance, liquid by high pressure line
Flowmeter body, pressure sensor, temperature sensor, check-valves play monitoring displacement between supercharging device and three-way connection
The effect of water-carrying capacity, pressure, temperature, and prevent driven water-replacing from flowing back；The outlet of liquid intermediate receptacle is connected to increasing by high pressure line
It is pressed posting port, control valve plays the feed speed effect of regulation liquid, liquid between liquid intermediate receptacle and supercharging device
Body intermediate receptacle exit is provided with check-valves, prevents liquid from flowing back, and supercharging device outlet connects agitating device by high pressure line
Entrance, agitating device are used to the liquid agitation that supercharging device is fed chemical agent is uniformly made, and agitating device outlet passes through high pressure
Pipeline is connected to three-way connection entrance, fluid flowmeter, pressure sensor, temperature sensor, check-valves be located at agitating device with
Between three-way connection, play a part of the chemical agent flux of monitoring, pressure, temperature, and prevent chemical agent from flowing back；Three-way connection passes through
High pressure line is connected to water injection well attachment means, and water injection well attachment means are connected with the simulation system.
In the flood pattern water storage device include water bottle, intermediate receptacle, beaker and other there is the routine of water storage function
Laboratory experiment equipment, the control valve is the traditional regulation valve arrangement with signal transmission and remote control function, described
Fluid flowmeter, pressure sensor, temperature sensor are the conventional chambers experimental facilities with signal transfer functions, the supercharging
Device can be that constant speed pump group, constant current pump group, constant pressure pump group and other application are in the pump group of laboratory experiment, the check-valves
Conventional chambers experimental facilities with individual event circulating function, the agitating device set for the conventional chambers experiment with agitating function
Standby, the water injection well attachment means are the conventional chambers experimental facilities with connection simulation water injection well 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；Back pressure valve inlet is connected with producing well
Device is connected by high pressure line, and control valve, pressure sensor, temperature sensor are located at producing well attachment means and back-pressure valve
Between, play a part of monitoring output object pressure, temperature, back-pressure valve plays the effect of simulated formation pressure, the back pressure valve outlet
It is connected with gas-liquid separator, 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；Producing well attachment means are connected with simulation system, and output object caused by simulation system work leads to
Cross producing well attachment means and enter production system.
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.
Preferably, simulation system of the invention include insulating box, reaction vessel, simulation water injection well, 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, simulation water injection well, 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,
Simulate water injection well, 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, water injection well attachment means and simulation water injection well in the flood pattern
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, flood pattern, production system are connected by transmission cable with computer, to collection is warm in real time in experimentation
Degree, pressure, output logistics capacity and other experimental datas, and experimental implementation is controlled by monitoring system.
A kind of device beneficial effect of simulation parallel water horizontal well chemical flooding exploitation of gas hydrate of the embodiment of the present invention
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) flood pattern 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, the hydration it is observed that chemical flooding taps natural gas in simulation system of the present invention
The change of different time sections simulation sand body, has certain guidance to make to chemical flooding exploitation of gas hydrate study mechanism during thing
With.
4) application based on monitoring system, can effectively gather in experiment temperature in different time section, pressure, Liquid output and
Other experimental datas, Mathematical Model Analysis can be carried out in input computer in real time, for by Physical simulation experiment and numerical simulation
Experimental 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 flood pattern 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, check-valves 12, three-way connection 13, methanol
Intermediate receptacle 14, ethanol intermediate receptacle 15, agitating device 16, water injection well attachment means 17, producing well attachment means 18, back-pressure valve
19th, gas-liquid separator 20, gas intermediate receptacle 21, insulating box 22, reaction vessel 23, simulation water injection well 24, simulated production well
Mouth 25, air supply inlet 26, feed flow entrance 27, temperature measuring equipment 28, pressure tester 29, bolt hole 30, upper cover plate 31, simulation wellbore hole
32nd, sand body 33, drawing out type filler 34, sealing original paper 35, simulation straight well section 36, dummy level section 37, analogue perforation are simulated
38th, 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 for the device for simulating parallel water horizontal well chemical flooding exploitation of gas hydrate of the present invention
Structure schematic diagram, including air supply system, liquid-supplying system, simulation system, flood pattern, 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 flood pattern 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, flood pattern 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 flood pattern is used for
System injection driven water-replacing and chemical agent, to simulate water injection well in actual production；The production system is used to produce the simulation system
Caused natural gas and water in system, and the output gas yield, aquatic products amount are analyzed, to simulate producing well in actual production；Institute
State simulation system to be used to 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 is used for air supply system described in real-time collecting, supplied
Liquid system, simulation system, flood pattern, production system running parameter, data caused by writing task parameter, and pass through monitoring
System controls experimental implementation.
A kind of device of above-mentioned simulation parallel water horizontal well chemical flooding exploitation of gas hydrate is carried out further below
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, flood pattern 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, three-way connection 12, check-valves 11, methanol intermediate receptacle 13,
Ethanol intermediate receptacle 14, agitating device 15, water injection well attachment means 16.
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 driven water-replacing is played, the outlet of supercharging device 3 is connected to three by high pressure line 7
The entrance of pass joint 12, fluid flowmeter 10, pressure sensor 5, temperature sensor 6, check-valves 11 are located at supercharging device 3 and threeway
Between joint 12, play a part of monitoring displacement water-carrying capacity, pressure, temperature, and prevent driven water-replacing from flowing back；Methanol intermediate receptacle
13rd, the outlet of ethanol intermediate receptacle 14 is connected to the entrance of supercharging device 3 by high pressure line 7, and control valve 2 is located among methanol and held
Between device 13, ethanol intermediate receptacle 14 and supercharging device 3, methanol intermediate receptacle 13, the exit of ethanol intermediate receptacle 14 are provided with only
Valve 11 is returned, prevents liquid from flowing back, the outlet of supercharging device 3 connects the entrance of agitating device 15 by high pressure line 7, and agitating device 15 is used
Chemical agent is uniformly made in the liquid agitation for feeding supercharging device 3, the outlet of agitating device 15 is connected to three by high pressure line 7
The entrance of pass joint 12, fluid flowmeter 10, pressure sensor 5, temperature sensor 6, check-valves 11 are located at agitating device 15 and three
Between pass joint 12, play a part of the chemical agent flux of monitoring, pressure, temperature, and prevent chemical agent from flowing back；Three-way connection 12 is logical
Cross high pressure line 7 and be connected to water injection well attachment means 16, water injection well attachment means 16 are connected with the simulation system.
As shown in figure 5, in the present embodiment, production system includes producing well attachment means 17, control valve 2, pressure sensing
Device 5, temperature sensor 6, high pressure line 7, back-pressure valve 18, gas-liquid separator 19, water storage device 9, gas intermediate receptacle 20.
The entrance of back-pressure valve 18 is connected with producing well attachment means 17 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 17 and back-pressure valve 18
With back-pressure valve 18 plays the effect of simulated formation pressure, and the outlet of back-pressure valve 18 is connected with gas-liquid separator 19, gas-liquid separation
Output object is implemented gas-liquid separation by device 19, and output water is fed into water storage device 9, and output gas feeds gas intermediate receptacle 20, raw
Production well attachment means 17 are connected with simulation system, and output object caused by simulation system work is entered by producing well attachment means 17
Enter production system.
As shown in fig. 6, in the present embodiment, simulation system include insulating box 21, reaction vessel 22, simulation water injection well 23,
Simulated production well head 24, air supply inlet 25, feed flow entrance 26, temperature measuring equipment 27, pressure tester 28, bolt hole 29, upper cover plate 30,
Simulation wellbore hole 31, simulation sand body 32.
Reaction vessel 22 is the high pressure resistant clear sheet of cuboid, and upper cover plate 30 is located at the top of reaction vessel 22, by bolt hole
The 29 cuboid confined spaces formed with bolt seal, simulation water injection well 23, simulated production well head 24, temperature measuring equipment 27, survey
Pressure device 28 is respectively positioned on the surface of upper cover plate 30, and the air supply inlet 25, feed flow entrance 26 are located at the surface of reaction vessel 22, simulate sand
Body 32 is located inside reaction vessel 22, and simulation wellbore hole 31 is inside simulation sand body 32, the temperature measuring equipment 27 and the pressure measurement
Device 28 positioned at simulation sand body 32 inside, the reaction vessel 22, simulation water injection well 23, simulated production well head 24, supply into
Mouth 25, feed flow entrance 26, temperature measuring equipment 27, pressure tester 28, bolt hole 29, upper cover plate 30, simulation wellbore hole 31, simulation sand body 32
It is respectively positioned in insulating box 21.
As shown in fig. 7, it is simulation system side view, in the surface air supply inlet 25 of reaction vessel 22, feed flow entrance 26 in mistake
Position alignment branch, as shown in figure 8, arranging schematic diagram, simulation water injection well 23, simulated production well head 24, thermometric dress for upper cover plate
The branch of 27, pressure tester 28 is put in the surface of upper cover plate 30.
As shown in figure 9, be simulation wellbore hole structural representation, simulation wellbore hole 31 include stainless steel tube 38, sealing original paper 34 and
Drawing out type filler 33, simulation wellbore hole 31 is fixed on the surface of upper cover plate 30 by sealing original paper 34, stainless steel tube 38 includes
Straight well section 35, dummy level section 36 and analogue perforation 37 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, flood pattern, production system is stated by transmission cable with computer to be connected, to
Real-time collecting temperature, pressure, output logistics capacity and other experimental datas in experimentation, and controlled and tested by monitoring system
Operation.
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 22
Body 32 paves compacting, two simulation wellbore holes 31 of tripping in during sand body 32 is simulated in filling, simulation water injection well 23, simulation is given birth to
Production well head 24 is connected with upper cover plate 30, sealed, inside temperature measuring equipment 27 and the tripping in of pressure tester 28 simulation sand body 32, by thermometric
Device 27 and pressure tester 28 are connected with upper cover plate 30, sealed, by bolt hole 29 and bolt by reaction vessel 22 and upper cover plate
30, which carry out bolt seal, forms simulated formation space, and simulation system is put into insulating box 21；Simulate the dosage of sand body 32, simulation wellbore hole
31 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 21 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 25 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 26 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 33 in simulation wellbore hole 31 is extracted out；Will
Producing well attachment means 17 are connected respectively with simulation water injection well 23, simulated production well head 24 in production system, by back-pressure valve 18
Simulated storage pressure is modulated, control valve 2 is opened, implements simulation decompression exploitation, it is real to output object by gas-liquid separator 19
Gas-liquid separation is applied, recovered water is collected by water storage device 9, output gas is collected by gas intermediate receptacle 20,
Pass through pressure sensor 5, temperature sensor 6 the decompression operational parameter of record simulation in real time；By temperature measuring equipment in simulation system 27,
Operational parameter in simulation system in the recovery process of record decompression in real time of pressure tester 28.
Step 3：Chemical flooding is implemented to simulation system by flood pattern, by simulation water injection well 23 and flood pattern
Water injection well attachment means 16 are connected, and open the control valve 2 being connected with water storage device 9, and driven water-replacing enters increasing in water storage device 9
It is pressurized in pressure device 3, enter three-way connection 12 by check-valves 11 injects simulation water injection well 23 by driven water-replacing, passes through liquid flow
Gauge 10, pressure sensor 5, temperature sensor 6 monitor injection parameter in real time, feed after driven water-replacing reaches scheduled volume and close regulation
Valve 2；Added in agitating device 15 and prepare water, open the regulating valve being connected with methanol intermediate receptacle 13, ethanol intermediate receptacle 14
Door 2, feeds agitating device 15, being agitated to form in agitating device 15 by predetermined amount by methanol, ethanol by supercharging device 3
Agent is learned, enter three-way connection 12 by check-valves 11 injects simulation water injection well 23 by chemical agent, passes through fluid flowmeter 10, pressure
Force snesor 5, temperature sensor 6 monitor injection parameter in real time, feed after chemical agent reaches scheduled volume and close control valve 2；Weight
Above-mentioned steps are answered to realize that driven water-replacing, chemical agent alternately inject.
Output object collection is implemented by the production system being connected with simulated production well head 24, back-pressure valve 18 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 19, by water storage device 9 to adopting
Water outlet is collected, and output gas is collected by gas intermediate receptacle 20, real by pressure sensor 5, temperature sensor 6
Shi Jilu simulation decompression operational parameters；Recorded in real time in recovery process by temperature measuring equipment in simulation system 27, pressure tester 28
Operational parameter in simulation system.
Above-mentioned steps carry out during, the monitoring system by temperature measuring equipment 27, pressure tester 28, pressure sensor 5,
Temperature sensor 6, gas flowmeter 4, fluid flowmeter 10 are monitored in real time, and record each stage design parameter of experiment,
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 for simulating parallel water horizontal well chemical flooding exploitation of gas hydrate, it is characterised in that the experimental provision Including air supply system, liquid-supplying system, simulation system, flood pattern, 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 water filling 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, flood pattern 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 flood pattern is used to note for the simulation system Enter driven water-replacing and chemical agent, to simulate water injection well in actual production；The production system is used to produce in the simulation system Caused natural gas and water, and the output gas yield, aquatic products amount are analyzed, to simulate producing well in actual production；The mould Plan system is used to simulate gas hydrates pressure, temperature, saturation degree, permeability and conventional formation parameter, and simulates in day Parallel water horizontal well hole pattern during right gas hydrate is hidden；The monitoring system is used for air supply system, feed flow system described in real-time collecting System, simulation system, flood pattern, production system running parameter, data caused by writing task parameter, and pass through monitoring system Control experimental implementation.
- 2. a kind of device for simulating parallel water horizontal well chemical flooding 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 for simulating parallel water horizontal well chemical flooding 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 for simulating parallel water horizontal well chemical flooding exploitation of gas hydrate as claimed in claim 1, its feature It is, the flood pattern includes water storage device, control valve, supercharging device, fluid flowmeter, pressure sensor, temperature and passed Sensor, high pressure line, three-way connection, check-valves, liquid intermediate receptacle, agitating device, water injection well attachment means；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 driven water-replacing is played, supercharging device outlet is connected to three-way connection entrance, liquid by high pressure line Flowmeter body, pressure sensor, temperature sensor, check-valves play monitoring displacement between supercharging device and three-way connection The effect of water-carrying capacity, pressure, temperature, and prevent driven water-replacing from flowing back；The outlet of liquid intermediate receptacle is connected to increasing by high pressure line It is pressed posting port, control valve plays the feed speed effect of regulation liquid, liquid between liquid intermediate receptacle and supercharging device Body intermediate receptacle exit is provided with check-valves, prevents liquid from flowing back, and supercharging device outlet connects agitating device by high pressure line Entrance, agitating device are used to the liquid agitation that supercharging device is fed chemical agent is uniformly made, and agitating device outlet passes through high pressure Pipeline is connected to three-way connection entrance, fluid flowmeter, pressure sensor, temperature sensor, check-valves be located at agitating device with Between three-way connection, play a part of the chemical agent flux of monitoring, pressure, temperature, and prevent chemical agent from flowing back；Three-way connection passes through High pressure line is connected to water injection well attachment means, and water injection well attachment means are connected with the simulation system.
- 5. a kind of device for simulating parallel water horizontal well chemical flooding 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；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；Producing well attachment means are connected with simulation system, mould Output object caused by the work of plan system enters production system by producing well attachment means.
- 6. a kind of device for simulating parallel water horizontal well chemical flooding exploitation of gas hydrate as claimed in claim 1, its feature It is, the simulation system includes insulating box, reaction vessel, simulation water injection well, 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, simulation water injection well, 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, simulation water injection well, 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 water injection well attachment means are connected with simulation water injection well in the flood pattern Connect, producing well attachment means are connected with simulated production well head in the production system.
- 7. a kind of device for simulating parallel water horizontal well chemical flooding 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, water filling system System, production system are connected by transmission cable with computer, to real-time collecting temperature, pressure, output in experimentation Logistics capacity and other experimental datas, and experimental implementation is controlled by monitoring system.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991269A (en) * | 2019-04-04 | 2019-07-09 | 成都理工大学 | Simulate the hot production efficiency experimental provision of beam body exploitation geothermal energy resources and operating method |
| CN111456689A (en) * | 2020-04-29 | 2020-07-28 | 江苏拓创科研仪器有限公司 | Hydrate development simulation system and hydrate displacement simulation system |
| CN114352272A (en) * | 2020-09-28 | 2022-04-15 | 中国石油天然气股份有限公司 | Three-dimensional experimental system for yield-increasing transformation and exploitation of three-way loading simulation hydrate reservoir |
| CN115405263A (en) * | 2021-05-28 | 2022-11-29 | 中国石油化工股份有限公司 | Multi-branch natural gas hydrate reservoir depressurization exploitation experimental device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550816A (en) * | 2009-05-20 | 2009-10-07 | 中国科学院广州能源研究所 | Three-dimensional exploitation simulated experiment apparatus for natural gas hydrate |
| CN102587877A (en) * | 2012-03-08 | 2012-07-18 | 中国海洋石油总公司 | Multi-element thermal fluid displacement process |
| CN103206210A (en) * | 2013-04-15 | 2013-07-17 | 中国石油大学(华东) | Experimental apparatus for exploiting natural gas hydrate reservoir by means of thermal fluid fracturing |
| CN104453794A (en) * | 2014-11-20 | 2015-03-25 | 中国科学院广州能源研究所 | Simulation experiment system for whole process of natural gas hydrate exploitation and simulation method |
| CN106593370A (en) * | 2017-01-17 | 2017-04-26 | 中国石油大学(华东) | Natural gas hydrate depressurization exploration simulation experiment device and work method |
-
2017
- 2017-10-23 CN CN201710992236.1A patent/CN107575222A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550816A (en) * | 2009-05-20 | 2009-10-07 | 中国科学院广州能源研究所 | Three-dimensional exploitation simulated experiment apparatus for natural gas hydrate |
| CN102587877A (en) * | 2012-03-08 | 2012-07-18 | 中国海洋石油总公司 | Multi-element thermal fluid displacement process |
| CN103206210A (en) * | 2013-04-15 | 2013-07-17 | 中国石油大学(华东) | Experimental apparatus for exploiting natural gas hydrate reservoir by means of thermal fluid fracturing |
| CN104453794A (en) * | 2014-11-20 | 2015-03-25 | 中国科学院广州能源研究所 | Simulation experiment system for whole process of natural gas hydrate exploitation and simulation method |
| CN106593370A (en) * | 2017-01-17 | 2017-04-26 | 中国石油大学(华东) | Natural gas hydrate depressurization exploration simulation experiment device and work method |
Non-Patent Citations (1)
| Title |
|---|
| 吴传芝等: "天然气水合物开采技术研究进展", 《地质科技情报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991269A (en) * | 2019-04-04 | 2019-07-09 | 成都理工大学 | Simulate the hot production efficiency experimental provision of beam body exploitation geothermal energy resources and operating method |
| CN111456689A (en) * | 2020-04-29 | 2020-07-28 | 江苏拓创科研仪器有限公司 | Hydrate development simulation system and hydrate displacement simulation system |
| CN114352272A (en) * | 2020-09-28 | 2022-04-15 | 中国石油天然气股份有限公司 | Three-dimensional experimental system for yield-increasing transformation and exploitation of three-way loading simulation hydrate reservoir |
| CN114352272B (en) * | 2020-09-28 | 2023-07-25 | 中国石油天然气股份有限公司 | Three-dimensional experimental system for three-dimensional loading simulation of hydrate reservoir yield increase transformation and exploitation |
| CN115405263A (en) * | 2021-05-28 | 2022-11-29 | 中国石油化工股份有限公司 | Multi-branch natural gas hydrate reservoir depressurization exploitation experimental device and method |
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