CN107701181A - A kind of experimental provision of gas hydrates fractured horizontal well simulation - Google Patents
A kind of experimental provision of gas hydrates fractured horizontal well simulation Download PDFInfo
- Publication number
- CN107701181A CN107701181A CN201710992239.5A CN201710992239A CN107701181A CN 107701181 A CN107701181 A CN 107701181A CN 201710992239 A CN201710992239 A CN 201710992239A CN 107701181 A CN107701181 A CN 107701181A
- Authority
- CN
- China
- Prior art keywords
- simulation
- gas
- pressure
- liquid
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/002—Survey of boreholes or wells by visual inspection
Abstract
The invention discloses a kind of experimental provision of gas hydrates fractured horizontal well simulation, it is related to gas hydrates development field.Device includes air supply system, liquid-supplying system, simulation system, production system, frac system and monitoring system, the present invention uses main body of the back-up sand case as simulation system, to simulate gas hydrates and horizontal well hole pattern, pass through air supply system, liquid-supplying system supplies natural gas into simulation system and water forms gas hydrates, decompression exploitation is implemented to simulated storage by production system, fracturing work is implemented to simulation gas hydrates storage by frac system, complete monitoring is implemented to experimentation by monitoring system, experimental provision of the present invention implements simulation pressure break to exploitation of gas hydrate using three-dimensional visualization mode, and fracturing fracture parameter is implemented to gather by x-ray imaging, the present invention has certain directive function to the research of gas hydrates fracturing mechanism.
Description
Technical field
The invention discloses a kind of experimental provision of gas hydrates fractured horizontal well simulation, it is related to gas hydrates
Development field, it is particularly used for simulating a kind of indoor experimental apparatus of gas hydrates fracturing work.
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.
Exploitation of gas hydrates technology is still in the stage of fumbling at present, and exploitation of the countries in the world to gas hydrates is still
The standard of a sleeve forming is not made, and the method for in-house laboratory investigation is still the main body of combustible ice production technique research, conventional
The method of detection gas hydrates has optical means, acoustic method and electrical method etc..For example, gas hydrates are in pure water
In generation and decomposition can be judged that reduce temperature under a certain pressure, hydrate is largely given birth to according to the change of light passband
Reduce into time passband, then slowly heat up suddenly, decomposition of hydrate time passband is flown up again.But in order to simulate ocean
Gas hydrates, the mixtures such as water, sand, natural gas need to be used, because its is opaque, the effect of light passband detection method is failed to understand
It is aobvious.Other monitoring methods, such as ultrasonic monitoring method, Time Domain Reflectometry (TDR) technology and imaging (CT) technology, can also intuitively,
Accurately, the generation and decomposition of quantitative observation and calculating gas hydrates.
CN103206210B announces the experimental provision that a kind of hot fluid pressure break exploitation of gas hydrate is hidden, and passes through hydrate
The axle frac system of core three, pressure break flood pattern, natural gas extraction system and acoustic emission monitoring system implement gas hydrates
Simulated experiment.But its fracturing fluid injection line inlet is connected to the pressure plare on triaxial apparatus top, it is difficult to simulates well in actual production
The method of cylinder pressure break, acoustic emission monitoring system is used when can be had a certain impact to experimental result precision, and observe fracturing effect,
The precision of experimental result can also be had a certain impact.In view of this, the present inventor proposes a kind of gas hydrates horizontal well
The experimental provision of fracture simulation, to meet the requirement of current three-dimensional simulation experimental provision, gas hydrates and water can be simulated
Horizontal well hole pattern, experimental provision of the present invention implement simulation pressure break to exploitation of gas hydrate using three-dimensional visualization mode,
And fracturing fracture parameter is implemented to gather by x-ray imaging, the present invention has certain to the research of gas hydrates fracturing mechanism
Directive function.
The content of the invention
The invention discloses a kind of experimental provision of gas hydrates fractured horizontal well simulation, device includes supply and is
System, liquid-supplying system, simulation system, production system, frac system and monitoring system, the present invention are as simulation using back-up sand case
The main body of system, to simulate gas hydrates and horizontal well hole pattern, it is to simulation by air supply system, liquid-supplying system
Natural gas is supplied in system and water forms gas hydrates, decompression exploitation is implemented to simulated storage by production system, passes through pressure
Split system and fracturing work implemented to simulation gas hydrates storage, complete monitoring is implemented to experimentation by monitoring system,
Experimental provision of the present invention using three-dimensional visualization mode to exploitation of gas hydrate implement simulation pressure break, and by X ray into
As implementing to gather to fracturing fracture parameter, the present invention has certain directive function to the research of gas hydrates fracturing mechanism.
Wherein described air supply system is connected with simulation system, and the liquid-supplying system is connected with simulation system, the life
Production system is connected with simulation system, and the frac system is connected with simulation system, the monitoring system respectively with the confession
Gas system, liquid-supplying system, simulation system, production system, frac system are connected.
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 production system is opened for simulating voltage drop method
Adopt, produce caused natural gas and water in the simulation system, and analyze the gas production, aquatic products amount；The pressure break system
Unite for implementing fracturing work to simulation system；The simulation system is used to simulate gas hydrates pressure, temperature, saturation
Degree, permeability and conventional formation parameter, and horizontal well hole pattern in gas hydrates is simulated, and pass through x-ray imaging
Fracturing fracture parameter is implemented to gather；The monitoring system is used for air supply system described in real-time collecting, liquid-supplying system, simulation system
System, production system, frac system running parameter, data caused by writing task parameter, and controlled and tested by monitoring system
Operation.
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, frac system of the invention includes water storage device, agitating device, control valve, supercharging device, liquid flow
Gauge, pressure sensor, temperature sensor, high pressure line, check-valves, simulation wellhead connection device；Water storage device outlet passes through
High pressure line is connected to agitating device entrance, for will feed agitating device with liquid water inside water storage device, and in agitating device
Middle mixing forms fracturing fluid with liquid water and additive, and agitating device outlet connects supercharging device entrance, regulation by high pressure line
For valve between agitating device and supercharging device, supercharging device outlet is connected to simulation well head connection dress by high pressure line
To put, fluid flowmeter, pressure sensor, temperature sensor, check-valves are located between supercharging device and simulation wellhead connection device,
Play a part of monitoring pressure break flow quantity, pressure, temperature, and prevent fracturing fluid from flowing back, simulation wellhead connection device and the mould
Plan system is connected.
In the frac 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 the experimental water for being applied to configuration fracturing fluid, the agitating device
For the conventional chambers experimental facilities with agitating function, the control valve is normal with signal transmission and remote control function
Control valve equipment is advised, the supercharging device can be constant speed pump group, constant current pump group, constant pressure pump group and other application in interior
The pump group of experiment, the fluid flowmeter, pressure sensor, temperature sensor are real for the conventional chambers with signal transfer functions
Equipment is tested, the check-valves is the conventional chambers experimental facilities with individual event circulating function, and the simulation wellhead connection device is
Conventional chambers experimental facilities with connection simulation well head and sealing function.
Preferably, production system of the invention includes simulation wellhead connection device, 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 and simulation well head
Attachment means are connected by high pressure line, control valve, pressure sensor, temperature sensor positioned at simulation wellhead connection device with
Between back-pressure valve, play a part of monitoring output object pressure, temperature, back-pressure valve plays the effect of simulated formation pressure, 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 dress
Put, output gas feeds gas intermediate receptacle；Simulation wellhead connection device is connected with simulation system, caused by simulation system work
Output object enters production system by simulating wellhead connection device.
It is the conventional chambers with connection simulation well head and sealing function that wellhead connection device is simulated in the production system
Experimental facilities, the control valve be with signal transmission and remote control function traditional regulation valve arrangement, the pressure
Sensor, temperature sensor are the conventional chambers experimental facilities with signal transfer functions, and the back-pressure valve is with back pressure work(
The conventional chambers experimental facilities of energy, the gas-liquid separator is the conventional chambers experimental facilities with gas-liquid separating function, described
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 enters including insulating box, reaction vessel, simulation well head, air supply inlet, feed flow
Mouth, pressure sensor, temperature sensor, bolt hole, upper cover plate, simulation wellbore hole, simulation sand body, X-ray emitter, X ray inspection
Go out device；Reaction vessel is cuboid safety glass, and the upper cover plate is located at the reaction vessel top, close by bolt hole bolt
The cuboid confined space formed is sealed, simulation well head, pressure sensor, temperature sensor are respectively positioned on upper cover plate surface, the confession
Gas entrance, feed flow entrance are located at reaction vessel surface, and simulation sand body is located at reaction vessel interior, and simulation wellbore hole is positioned at simulation sand body
Inside, the X-ray emitter, X ray detector are located at reaction vessel both sides, the reaction vessel, simulation well head, supply into
Mouth, feed flow entrance, pressure sensor, temperature sensor, bolt hole, upper cover plate, simulation wellbore hole, simulation sand body, X ray occur
Device, X ray detector are respectively positioned in insulating box.
The reaction vessel is fluted body cuboid safety glass, its height, width range 20-50cm, length range
Set for 0.5-1m, thickness range 3-10cm, highest simulated storage pressure 35Mpa, the reaction vessel with upper cover plate contact surface
There is sealing ring, for increasing simulation system sealing, the sealing ring material is high pressure resistant rubber, and the temperature sensor is tool
There are temperature-monitoring function and the conventional chambers experimental facilities of signal transfer functions, the pressure sensor is with pressure monitoring work(
The conventional chambers experimental facilities of energy and signal transfer functions, the simulation sand body include quartz sand, rock core powder and other routines
Simulated 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 simulating 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 is protected
Cryogenic high pressure is held, after simulation sand body is internally formed gas hydrates and keeps stable, drawing out type filler is taken out, and will
Seal original paper modulation 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, wellhead connection device is simulated in the frac system with simulating well head phase
Connect, wellhead connection device is simulated in the production system and is connected with simulation well head.
The X-ray emitter, X ray detector are connected with monitoring system Computer, send and receive X ray letter
Number, it is different from transmitance using absorption of the different densities material to X ray, can be with after being handled by computer data
The three-dimensional image of simulation system internal simulation sand body is obtained, can gas hydrates be stored with length, the width of fracturing fracture
Degree, direction and other fracturing parameters are intuitively observed.
Preferably, monitoring system of the invention includes computer and transmission cable, the air supply system, liquid-supplying system, mould
Plan system, production system are connected by transmission cable with computer, in experimentation real-time collecting temperature, pressure,
Output logistics capacity, x-ray imaging and other experimental datas, and experimental implementation is controlled by monitoring system.
A kind of experimental provision of gas hydrates fractured horizontal well simulation of the embodiment of the present invention has the beneficial effect that：
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) reaction vessel main body safety glass is transparent in simulation system of the present invention, it is observed that gas hydrates
The change of different time sections simulation sand body, has certain directive function to gas hydrates physical property research when generation and decomposition.
3) application based on monitoring system, temperature, pressure and other realities in different time section can effectively be gathered in experiment
Data are tested, Mathematical Model Analysis can be carried out in input computer in real time, for by Physical simulation experiment and Numerical Experiment knot
Fruit is combined.
4) use based on simulation wellbore hole, pit shaft and perforated interval in gas hydrates storage, perforated interval can effectively be simulated
Position can be adjusted according to experiment parameter, and the use of simulation wellbore hole can improve simulation fracturing experiments precision.
5), can be effectively to simulating gas water based on frac system and X-ray emitter, the application of X ray detector
Compound storage implements fracturing work, and passes through the length of X-ray emitter, X ray detector to fracturing fracture, direction implementation three
Tie up synchronously visualization display.
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 frac 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
6th, temperature sensor 7, high pressure line 8, tap valve 9, water storage device 10, fluid flowmeter 11, agitating device 12, only
Return valve 13, simulation wellhead connection device 14, back-pressure valve 15, gas-liquid separator 16, gas intermediate receptacle 17, insulating box
18th, reaction vessel 19, bolt hole 20, upper cover plate 21, air supply inlet 22, feed flow entrance 23, simulation wellbore hole 24, simulation sand
Body 25, simulation well head 26, X-ray emitter 27, X ray detector 28, drawing out type filler 29, sealing original paper
30th, stainless steel tube 31, analogue perforation 32, simulation straight well section 33, dummy level section.
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 structural representation of the experimental provision of gas hydrates fractured horizontal well simulation of the present invention
Figure, including air supply system, liquid-supplying system, simulation system, production system, frac system and monitoring system；Wherein described supply
System is connected with simulation system, and the liquid-supplying system is connected with simulation system, and the production system is connected with simulation system
Connect, the frac system is connected with simulation system, the monitoring system respectively with the air supply system, liquid-supplying system, simulation
System, production system, frac system are connected.
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 production system is opened for simulating voltage drop method
Adopt, produce caused natural gas and water in the simulation system, and analyze the gas production, aquatic products amount；The pressure break system
Unite for implementing fracturing work to simulation system；The simulation system is used to simulate gas hydrates pressure, temperature, saturation
Degree, permeability and conventional formation parameter, and horizontal well hole pattern in gas hydrates is simulated, and pass through x-ray imaging
Fracturing fracture parameter is implemented to gather；The monitoring system is used for air supply system described in real-time collecting, liquid-supplying system, simulation system
System, production system, frac system running parameter, data caused by writing task parameter, and controlled and tested by monitoring system
Operation.
The experimental provision simulated below to a kind of above-mentioned gas hydrates fractured horizontal well is further described：
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, frac system includes water storage device 9, agitating device 11, control valve 2, supercharging
Device 3, fluid flowmeter 10, pressure sensor 5, temperature sensor 6, high pressure line 7, check-valves 12, simulation well head connection dress
Put 13.
The outlet of water storage device 9 is connected to the entrance of agitating device 11 by high pressure line 7, for the inside of water storage device 9 to be matched somebody with somebody
Liquid water feeds agitating device 11, and mixing forms fracturing fluid with liquid water and additive in agitating device 11, and agitating device 11 goes out
Mouth connects the entrance of supercharging device 3 by high pressure line 7, and control valve 2 is between agitating device 11 and supercharging device 3, supercharging
The outlet of device 3 is connected to simulation wellhead connection device 13, fluid flowmeter 10, pressure sensor 5, temperature by high pressure line 7
Sensor 6, check-valves 12 are located between supercharging device 3 and simulation wellhead connection device 13, play monitoring pressure break flow quantity, pressure
The effect of power, temperature, and prevent fracturing fluid from flowing back, simulation wellhead connection device 13 is connected with the simulation system.
As shown in figure 5, in the present embodiment, production system includes simulation wellhead connection device 13, control valve 2, pressure and passed
Sensor 5, temperature sensor 6, high pressure line 7, back-pressure valve 14, gas-liquid separator 15, water storage device 9, gas intermediate receptacle 16.
The entrance of back-pressure valve 14 is connected with simulation wellhead connection device 13 by high pressure line 7, control valve 2, pressure sensing
Device 5, temperature sensor 6 play monitoring output object pressure, temperature between simulation wellhead connection device 13 and back-pressure valve 14
Effect, back-pressure valve 14 play the effect of simulated formation pressure, and the outlet of back-pressure valve 14 is connected with gas-liquid separator 15, gas-liquid point
Output object to be implemented into gas-liquid separation from device 15, and output water is fed into water storage device 9, output gas feeds gas intermediate receptacle 16,
Simulation wellhead connection device 13 is connected with simulation system, and output object caused by simulation system work is by simulating well head connection dress
Put 13 and enter production system.
As shown in Fig. 6,7,8, in the present embodiment, simulation system include insulating box 17, reaction vessel 18, simulation well head 25,
Air supply inlet 21, feed flow entrance 22, pressure sensor 5, temperature sensor 6, bolt hole 19, upper cover plate 20, simulation wellbore hole 23, mould
Intend sand body 24, X-ray emitter 26, X ray detector 27.
Reaction vessel 18 is cuboid safety glass, and upper cover plate 20 is located at the top of reaction vessel 18, and spiral shell is used by bolt hole 19
Bolt seals the cuboid confined space to be formed, and simulation well head 25, pressure sensor 5, temperature sensor 6 are respectively positioned on the table of upper cover plate 20
Face, the air supply inlet 21, feed flow entrance 22 are located at the surface of reaction vessel 18, and simulation sand body 24 is located inside reaction vessel 18,
For simulation wellbore hole 23 inside simulation sand body 24, the X-ray emitter 26, X ray detector 27 are located at 18 liang of reaction vessel
Side, reaction vessel 18, simulation well head 25, air supply inlet 21, feed flow entrance 22, pressure sensor 5, temperature sensor 6, bolt hole
19th, upper cover plate 20, simulation wellbore hole 23, simulation sand body 24, X-ray emitter 26, X ray detector 27 are respectively positioned on insulating box 17
It is interior.
As shown in fig. 7, it is simulation system side view, in the surface air supply inlet 21 of reaction vessel 18, feed flow entrance 22 in mistake
Position alignment branch, X-ray emitter 26, X ray detector 27 are located at the both sides of reaction vessel 18, as shown in figure 8, being upper cover plate cloth
Schematic diagram is put, simulation well head 25, pressure sensor 5, temperature sensor 6 are arranged in the surface of upper cover plate 20, X-ray emitter 26, X
Ray detector 27 is located at the both sides of reaction vessel 18.
As shown in figure 9, be simulation wellbore hole structural representation, simulation wellbore hole 23 include stainless steel tube 30, sealing original paper 29 and
Drawing out type filler 28, simulation wellbore hole 23 is fixed on the surface of upper cover plate 20 by sealing original paper 29, stainless steel tube 30 includes
Straight well section 32, dummy level section 33 and analogue perforation 31 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, frac system, production system is stated by transmission cable with computer to be connected, to
Real-time collecting temperature, pressure, output logistics capacity, x-ray imaging 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 18
Body 24 paves compacting, the tripping in simulation wellbore hole 23 during sand body 24 is simulated in filling, simulation well head 25 is connected with upper cover plate 20,
Sealing, by pressure sensor 5, temperature sensor 6 be connected, seal with the surface of upper cover plate 20, by bolt hole 19 and bolt general instead
Answer container 18 to carry out bolt seal with upper cover plate 20 and form simulated formation space, simulation system is put into insulating box 17；Simulate sand
The dosage of body 24, the length of simulation wellbore hole 23 and depth of setting and other conventional parameters are adjusted according to actual storage parameter.
Gas hydrates, supply are generated as feeding natural gas and water in 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 17 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 21 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 22 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 28 in simulation wellbore hole 23 is extracted out；Will
Wellhead connection device 13 is simulated in production system to be connected with simulation well head 25, and back-pressure valve 14 is modulated into simulated storage pressure, will be adjusted
Section valve 2 is opened, and implements simulation decompression exploitation, is implemented gas-liquid separation to output object by gas-liquid separator 15, is filled by water storage
Put 9 pairs of recovered waters to be collected, output gas is collected by gas intermediate receptacle 16, passed by pressure sensor 5, temperature
The decompression operational parameter of record simulation in real time of sensor 6；By pressure sensor in simulation system 5, temperature sensor 6, record drops in real time
Press off during adopting operational parameter in simulation system.
Step 3：Fracturing work is implemented to simulation system by frac system, simulation well head 25 is closed, removes production system
System, simulation well head 25 is connected with simulating wellhead connection device 13 in frac system, and the inside of water storage device 9 is fed with liquid water
Agitating device 11, and mixing forms fracturing fluid with liquid water and additive in agitating device 11, opens control valve 2, will stir
Fracturing fluid feeds supercharging device 3 in device 11, and via supercharging device 3, high pressure line 7, check-valves 12, simulation well head connection dress
Put 13 and fracturing fluid is injected into simulation well head 25, fracturing work is implemented to simulation system, passes through fluid flowmeter 10, pressure sensor
5th, temperature sensor 6 monitors injection parameter in real time, feeds after fracturing fluid reaches scheduled volume and closes supercharging device 3, control valve 2；
Fracturing fracture delta data is monitored by X-ray emitter 26, X ray detector 27 in real time during fracturing work, and passes through monitoring
System stores.
During above-mentioned steps are carried out, the monitoring system passes through pressure sensor 5, temperature sensor 6, gas flowmeter
4th, fluid flowmeter 10 is monitored in real time, and records each stage design parameter of experiment, by connecting control valve 2 to experiment
Process is manipulated.
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)
1. a kind of experimental provision of gas hydrates fractured horizontal well simulation, it is characterised in that the experimental provision includes supplying
Gas system, liquid-supplying system, simulation system, production system, frac 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 production system
System is connected with simulation system, and the frac system is connected with simulation system, and the monitoring system is respectively with the supply
System, liquid-supplying system, simulation system, production system, frac system are connected；
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 production system is used to simulate voltage drop method exploitation,
Caused natural gas and water in the simulation system are produced, and analyzes the gas production, aquatic products amount；The frac system is used
In to simulation system implementation fracturing work；The simulation system be used for simulate gas hydrates pressure, temperature, saturation degree,
Permeability and conventional formation parameter, and horizontal well hole pattern in gas hydrates is simulated, and by x-ray imaging to pressure
Split fracture parameters and implement collection；The monitoring system is used for air supply system, liquid-supplying system, simulation system, life described in real-time collecting
Production system, frac system running parameter, data caused by writing task parameter, and experimental implementation is controlled by monitoring system.
A kind of 2. experimental provision of gas hydrates fractured horizontal well simulation as claimed in claim 1, it is characterised in that institute
Stating air supply system includes natural gas bottle, control valve, supercharging device, gas flowmeter, pressure sensor, temperature sensor, height
Pressure pipeline, 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.
A kind of 3. experimental provision of gas hydrates fractured horizontal well simulation as claimed in claim 1, it is characterised in that institute
Stating liquid-supplying system includes water storage device, control valve, supercharging device, fluid flowmeter, pressure sensor, temperature sensor, height
Pressure pipeline, 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.
A kind of 4. experimental provision of gas hydrates fractured horizontal well simulation as claimed in claim 1, it is characterised in that institute
Stating frac system includes water storage device, agitating device, control valve, supercharging device, fluid flowmeter, pressure sensor, temperature
Sensor, high pressure line, check-valves, simulation wellhead connection device；
Water storage device outlet is connected to agitating device entrance by high pressure line, is stirred for will be fed inside water storage device with liquid water
Device is mixed, and mixing forms fracturing fluid with liquid water and additive in agitating device, agitating device outlet is connected by high pressure line
Supercharging device entrance is connect, between agitating device and supercharging device, supercharging device outlet is connected control valve by high pressure line
Simulation wellhead connection device is connected to, fluid flowmeter, pressure sensor, temperature sensor, check-valves are located at supercharging device and mould
Between intending wellhead connection device, play a part of monitoring pressure break flow quantity, pressure, temperature, and prevent fracturing fluid from flowing back, simulate well
Mouth attachment means are connected with the simulation system.
A kind of 5. experimental provision of gas hydrates fractured horizontal well simulation as claimed in claim 1, it is characterised in that institute
Stating production system includes simulation wellhead connection device, 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 simulation wellhead connection device by high pressure line, control valve, pressure sensor, TEMP
Device plays a part of monitoring output object pressure, temperature, back-pressure valve plays mould between simulation wellhead connection device and back-pressure valve
Pseudo-reservoir pressure is acted on, and the back pressure valve outlet is connected with gas-liquid separator, and output object is implemented gas-liquid point by gas-liquid separator
From, and output water is fed into water storage device, output gas feeds gas intermediate receptacle；Simulate wellhead connection device and simulation system phase
Connection, output object caused by simulation system work enter production system by simulating wellhead connection device.
A kind of 6. experimental provision of gas hydrates fractured horizontal well simulation as claimed in claim 1, it is characterised in that institute
Stating simulation system includes insulating box, reaction vessel, simulation well head, air supply inlet, feed flow entrance, pressure sensor, TEMP
Device, bolt hole, upper cover plate, simulation wellbore hole, simulation sand body, X-ray emitter, X ray detector；
Reaction vessel is cuboid safety glass, and the upper cover plate is located at the reaction vessel top, close by bolt hole bolt
The cuboid confined space formed is sealed, simulation well head, pressure sensor, temperature sensor are respectively positioned on upper cover plate surface, the confession
Gas entrance, feed flow entrance are located at reaction vessel surface, and simulation sand body is located at reaction vessel interior, and simulation wellbore hole is positioned at simulation sand body
Inside, gas hydrates and horizontal well hole pattern, the X are simulated by simulating sand body and simulation wellbore hole arrangement
Ray generator, X ray detector are located at reaction vessel both sides, and the reaction vessel, simulation well head, air supply inlet, feed flow enter
Mouth, pressure sensor, temperature sensor, bolt hole, upper cover plate, simulation wellbore hole, simulation sand body, X-ray emitter, X ray inspection
Go out device to 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 wellhead connection device is simulated in the frac system and is connected with simulation well head
Connect, wellhead connection device is simulated in the production system and is connected with simulation well head.
A kind of 7. experimental provision of gas hydrates fractured horizontal well simulation as claimed in claim 1, it is characterised in that institute
Stating monitoring system includes computer and transmission cable, the air supply system, liquid-supplying system, simulation system, frac system, production system
System be connected by transmission cable with computer, in experimentation real-time collecting temperature, pressure, output logistics capacity, X penetrate
Line imaging and other experimental datas, and experimental implementation is controlled by monitoring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710992239.5A CN107701181A (en) | 2017-10-23 | 2017-10-23 | A kind of experimental provision of gas hydrates fractured horizontal well simulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710992239.5A CN107701181A (en) | 2017-10-23 | 2017-10-23 | A kind of experimental provision of gas hydrates fractured horizontal well simulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107701181A true CN107701181A (en) | 2018-02-16 |
Family
ID=61182143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710992239.5A Withdrawn CN107701181A (en) | 2017-10-23 | 2017-10-23 | A kind of experimental provision of gas hydrates fractured horizontal well simulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107701181A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826612A (en) * | 2019-01-31 | 2019-05-31 | 中国石油大学(华东) | Gas hydrates reservoir radially horizontal well drilling simulator and method |
| CN109900726A (en) * | 2019-04-02 | 2019-06-18 | 中国科学院地质与地球物理研究所 | A kind of large scale gas hydrates reservoir fracturing physical analogy and seam net observation method |
| CN111535795A (en) * | 2020-03-23 | 2020-08-14 | 深圳市百勤石油技术有限公司 | Simulation detection system for underwater natural gas hydrate wellhead device |
| 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 |
| CN116167302A (en) * | 2023-04-18 | 2023-05-26 | 中国石油大学(华东) | Description method of artificial complex cracks in natural gas hydrate yield increase simulation |
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 CN201710992239.5A patent/CN107701181A/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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826612A (en) * | 2019-01-31 | 2019-05-31 | 中国石油大学(华东) | Gas hydrates reservoir radially horizontal well drilling simulator and method |
| CN109826612B (en) * | 2019-01-31 | 2021-04-30 | 中国石油大学(华东) | Natural gas hydrate reservoir radial horizontal well drilling and production simulation device and method |
| CN109900726A (en) * | 2019-04-02 | 2019-06-18 | 中国科学院地质与地球物理研究所 | A kind of large scale gas hydrates reservoir fracturing physical analogy and seam net observation method |
| CN111535795A (en) * | 2020-03-23 | 2020-08-14 | 深圳市百勤石油技术有限公司 | Simulation detection system for underwater natural gas hydrate wellhead device |
| 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 |
| CN116167302A (en) * | 2023-04-18 | 2023-05-26 | 中国石油大学(华东) | Description method of artificial complex cracks in natural gas hydrate yield increase simulation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107701181A (en) | A kind of experimental provision of gas hydrates fractured horizontal well simulation | |
| CN107514247A (en) | A kind of device for simulating gas hydrates row's formula horizontal well seawater injection exploitation | |
| CN107503715A (en) | A kind of device for simulating parallel water horizontal well seawater injection exploitation of gas hydrate | |
| CN107045054B (en) | The experimental provision and method of the relationship of husky behavior and the deformation of porous media radial direction are produced in a kind of researching natural gas hydrate recovery process | |
| CN107764868A (en) | A kind of experimental provision for being used to measure gas hydrates physical property | |
| CN105403672B (en) | Simulate the experimental provision and method of exploitation of gas hydrates process stratum deformation | |
| CN109681198B (en) | Multi-mode exploitation simulation device and method for different types of natural gas hydrate reservoirs | |
| CN105301200B (en) | Testing apparatus for characteristics of sand production during mining of natural gas hydrate | |
| CN105259003B (en) | A kind of experimental provision and method for synthesizing ocean gas hydrate sample | |
| CN107514249A (en) | A kind of gas hydrates chemical flooding photoetching glass model microcosmos experiment device | |
| CN104453794B (en) | Simulation experiment system for whole process of natural gas hydrate exploitation and simulation method | |
| CN105277660B (en) | The device and method in decomposition of hydrate region under the different drilling method of monitoring | |
| CN105203716B (en) | Ocean gas hydrate solid state fluidizing extracting experiment analog | |
| CN111443182A (en) | Supergravity hydrate research experiment system and method | |
| CN110630228B (en) | Evaluation of CO 2 /N 2 Device and method for sand production and sand prevention of shaft during hydrate exploitation by displacement method | |
| CN102169112B (en) | Device and method for research of low-dosage inhibitor of natural gas hydrate | |
| CN107575222A (en) | A kind of device for simulating parallel water horizontal well chemical flooding exploitation of gas hydrate | |
| CN107701182A (en) | A kind of device for simulating row's formula horizontal well chemical flooding exploitation of gas hydrate | |
| CN107542436A (en) | A kind of device simulated parallel water horizontal well mixed phase and drive exploitation of gas hydrate | |
| CN107676065A (en) | A kind of device for simulating row's formula horizontal well seawater injection exploitation of gas hydrate | |
| CN105571647A (en) | Natural gas hydrate exploitation multi-physical field evolution simulation test device and method | |
| CN205426212U (en) | Many physics of gas hydrate exploitation field evolution simulating measurement setup | |
| CN107516462A (en) | A kind of gas hydrates photoetching glass model microcosmos experiment device | |
| CN111551672B (en) | Natural gas hydrate exploitation methane leakage simulation system and method | |
| CN111577212A (en) | Large-scale natural gas hydrate formation decomposition geological environment simulation system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180216 |