CN109060608A - The multiple dimensioned water seal mechanism of qi reason visual experimental apparatus of high temperature and pressure and method - Google Patents
The multiple dimensioned water seal mechanism of qi reason visual experimental apparatus of high temperature and pressure and method Download PDFInfo
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- CN109060608A CN109060608A CN201810745861.0A CN201810745861A CN109060608A CN 109060608 A CN109060608 A CN 109060608A CN 201810745861 A CN201810745861 A CN 201810745861A CN 109060608 A CN109060608 A CN 109060608A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/04—Investigating osmotic effects
Abstract
The present invention relates to a kind of multiple dimensioned water seal mechanism of qi reason visual experimental apparatus of the high temperature and pressure of simulation and research stratum filtration and methods.The experimental provision can simulate the formation mechenism of the water seal gas under stratum high-temperature condition of high voltage.Its technical solution are as follows: the device is made of displacement system, model system, metering system, and the model system includes conventional plane flow model in porous media, microexamination model, microcosmic scan model three parts；Its conventional plane flow model in porous media is connected by four plane flow models in porous media, input pipe is equipped on the left of four plane flow models in porous media, and be connected with displacement pump, right side is equipped with efferent duct, and is connected with back-pressure valve and metering device；Microexamination model and microcosmic scan model left and right sides are equipped with input pipe and efferent duct, and the threaded hole by conventional plane flow model in porous media by avris is connected.The present invention can observe the channelling of different layers interdigit and aqueous vapor migration rule, accurately be analyzed the formation mechenism of stratum water seal gas, and have visual understanding to water enchroachment (invasion) using dyeing water body.
Description
Technical field
The present invention relates to it is a kind of simulation and researching high-temperature condition of high voltage under stratum filtration multi-scale visualization physical model,
The formation mechenism of water seal gas and the experimental provision and experimental method of rule are analyzed simultaneously.
Background technique
For natural gas as a kind of clean energy resource, environmental pollution is smaller, increasingly by global favor, accounts for global energy
The ratio of consumption increases year by year.In China, most of gas reservoirs can be by different degrees of water enchroachment (invasion) in the middle and later periods of exploitation, and water
The recovery ratio that purging hides 40-60% is significantly lower than the recovery ratio of pure gas reservoir 80-95%, and main cause is that water body intrusion makes
A large amount of gas well water loggings are obtained, so that formation gas is retained in gas reservoir in the form of water seal gas and can not be produced, are brought serious
The wasting of resources and economic benefit loss.
It is current common method both domestic and external with physical Model Study underground fluid percolation law, by establishing physics mould
Type come research and analyse stratum water seal gas formation mechenism to instruct gas reservoir production development and draining produce gas be of great significance.
The physical model of currently used research displacement phenomenon includes: the microcosmic artificial physical model of 1. laser ablations.Document
" water drive gas reservoir seepage flow mechanism and analog theory and technique study " carries out water drive gas using the microcosmic artificial physical model of laser ablation
Experiment, photoengraving microphysics model is made by pore structure representated by casting body flake, and analysis obtains to form water seal gas
The main reason for have card it is disconnected formed water seal gas, stream to form water seal gas, stagnant pore forms water seal gas, closing well answers swaging into water seal
Gas, major defect existing for the model are not in view of crossflow phenomenon.2. planar radial microscopic seepage model.Using visual
Change core holding unit and observe water body seepage flow, but does not consider simulated formation high-temperature and high-pressure conditions.3. three-dimensional visualization physics displacement mould
Type.The model can directly observe water body intrusion situation, but fail to consider crossflow.4. considering the visualization physics of crossflow
Simulator.The device is connected the sealing container for simulating different layers position using connecting tube, simulates the interlayer between different layers position
Channelling, which, which has a defect that, is unable to microscopic observation analyzing water body seepage flow.
Summary of the invention
For the deficiency of existing model and technology, the present invention is intended to provide one kind can be simulated in stratum high-temperature condition of high voltage
Under, can simultaneously from multiple dimensioned from water seal gas formation mechenism experimental provision, and using multilayer connection consider layer and layer it
Between interfere with each other, using dyeing water body to water body be distributed and water enchroachment (invasion) intensity have more intuitive understanding.
The technical solution of the experimental provision is as follows:
The multiple dimensioned water seal mechanism of qi reason visualization of heterogeneous sandstone formation water drive gas is real under a kind of simulation high-temperature and high-pressure conditions
Experiment device, the experimental provision are made of displacement system, model system, metering system, and the model system includes conventional flat
Face flow model in porous media, microexamination model and microcosmic scan model three parts.The conventional plane flow model in porous media by four or four to
Eight conventional plane flow models in porous media are formed by connecting side by side, four conventional plane flow models in porous media respectively by the connection of four connecting tubes and
At；2-3 input pipe is equipped on the left of four conventional planes flow model in porous media, input pipe is connected with displacement pump, and right side is equal
Equipped with 2-3 efferent duct, efferent duct is connected with back-pressure valve input end, and back-pressure valve outlet end is connected with metering device；Back-pressure valve
It is connect with air pump, keeps outlet pressures, high-pressure horizontal two-way valve is installed between back-pressure valve and conventional plane flow model in porous media；Institute
It states and is equipped with input pipe on the left of microexamination model, right side is equipped with efferent duct, and input pipe and efferent duct are seeped by conventional plane
Flow model is connected by the threaded hole of avris；Input pipe is equipped on the left of the microcosmic scan model, right side is equipped with efferent duct, input
Pipe passes through conventional plane flow model in porous media with efferent duct and is connected by the threaded hole of avris.Each model is from top to bottom by lid
Plate, sealing rubber pad, bottom plate three parts composition.
In a kind of preferred embodiment of the invention, described its main body of conventional plane flow model in porous media is by stainless steel
It is long 40cm, width 40cm, high 2cm at, bottom plate and the size of the cover plate, with seepage tank among insole board, seepage flow flute length 30cm,
There is rectangular preiection among wide 30cm, high 0.5cm, cover board and contacts baseplate side, to be sufficiently compacted sand sample, and avoid
In sand body and cover board contact surface crossfire, which occurs, for fluid influences to test.The long 30cm of protrusion, width 30cm, high 0.2cm.To guarantee model
Effect of visualization, cover board intermediate rectangular convex portion use organic tempered glass material.The pattern board and cover board are in seepage flow
Uniform cloth hole between slot and edge of model, aperture 0.6cm.
In a kind of preferred embodiment of the invention, the conventional plane flow model in porous media base plate interior is equipped with electric heating
Silk, heating wire are connected with normally closed type temperature detect switch (TDS) and power supply, and experiment accesses power supply when starting, and heating wire starts to heat to model,
When temperature reaches experiment set temperature, temperature detect switch (TDS) disconnects automatically, and model stops heating, temperature control after temperature declines certain value
The automatic closure of switch, model continue to heat, and make model stability in certain high temperature range, constitute temperature control heating system.
In a kind of preferred embodiment of the invention, the conventional plane flow model in porous media output end with back-pressure valve phase
Even, high-pressure horizontal two-way valve, model JKT-GV are equipped on the efferent duct between model and back-pressure valve.Back-pressure valve passes through access gas
The pressure of pump control outlet end, back-pressure valve outlet end accesses metering device, measures the gas production and Liquid output of each model.
In a kind of preferred embodiment of the invention, described conventional plane flow model in porous media bottom plate or so respectively sets 2-3 item company
Road is connected, for installing connecting tube.The long 5cm of the interface channel, width 0.6cm, depth 0.6cm, bottom are arc-shaped.
In a kind of preferred embodiment of the invention, the conventional plane flow model in porous media bottom plate and cover board are in seepage tank four
Angle Position is equipped with threaded hole, to be connected with upper and lower level conventional plane flow model in porous media arranged side by side.It is conventional in the second layer and third layer
It is additionally provided with two threaded holes on plane flow model in porous media cover board, passes through with microexamination model and microcosmic scan model connect respectively
Pipe is connected.The threaded hole aperture 0.97cm, connector used are that stainless steel leads directly to ferrule fitting, model NPT1/8-6.
In a kind of preferred embodiment of the invention, described its main body of microexamination model is made of stainless steel, bottom
Plate and the size of the cover plate are long 10cm, width 10cm, high 1cm, with seepage tank among insole board, seepage flow flute length 5cm, width 5cm,
High 0.5cm, cover board centre have rectangular preiection, to be sufficiently compacted sand sample, the long 5cm of protrusion, width 5cm, high 0.2cm.To guarantee
The effect of visualization of model, cover board intermediate rectangular convex portion use organic tempered glass material.The pattern board and cover board
The uniform cloth hole between seepage tank and edge of model, aperture 0.6cm.
In a kind of preferred embodiment of the invention, it is logical that described microexamination pattern board or so respectively sets a connection
Road, for installing connecting tube.The long 5cm of the interface channel, width 0.6cm, depth 0.6cm, bottom are arc-shaped.
In a kind of preferred embodiment of the invention, the microcosmic scan model is made of carbon fibre material, bottom plate
It is long 10cm, width 10cm, high 1cm with the size of the cover plate, there is seepage tank, seepage flow flute length 5cm, width 5cm, height among insole board
0.5cm, cover board centre have rectangular preiection, to be sufficiently compacted sand sample, the long 5cm of protrusion, width 5cm, high 0.2cm.The model
Bottom plate and the cover board uniform cloth hole between seepage tank and edge of model, aperture 0.6cm.
In a kind of preferred embodiment of the invention, it is logical that described microcosmic scan model bottom plate or so respectively sets a connection
Road, for installing connecting tube.The long 5cm of the interface channel, width 0.6cm, depth 0.6cm, bottom are arc-shaped.
In a kind of preferred embodiment of the invention, the connecting tube is stainless steel tube, outer diameter 0.6cm, internal diameter
0.4cm。
In a kind of preferred embodiment of the invention, the screw diameter is 0.6cm, and the nut is cap nut,
Model M6.
In a kind of preferred embodiment of the invention, the rubber pad thickness 0.2cm is boring by rubber pad as needed
It is passed through with screw rod.Seepage flow slot part is intercepted among rubber pad in the conventional plane flow model in porous media and microexamination model, with
Convenient for visual observation.
In a kind of preferred embodiment of the invention, among the microexamination model and microcosmic scan model connecting tube
It is mounted on high pressure hand-operated stop valve, model ZTF can be by microexamination model and microcosmic scan model when closing shut-off valve
It removes and carries out microscopically observation and CT scan observation respectively, and keep the stabilization of each modal pressure.
In a kind of preferred embodiment of the invention, water body used is dyeing water body, and ingredient is distilled water+methylene
Indigo plant+sodium sulfite, wherein sodium sulfite can make water body keep thermal stability.
The invention has the following advantages:
(1) invention simulates the condition of stratum high-temperature high pressure, and experimentation and result is made to be more nearly truly stratiform
Condition is more accurately analyzed so as to the formation mechenism to stratum water seal gas；
(2) invention has fully considered crossflow phenomenon, and the juxtaposed layer position of distribution is seeped by the way that multiple and different holes are arranged, and sees
Examine the channelling phenomenon and aqueous vapor migration rule between different layers position；
(3) invention has fully considered the multiple dimensioned seepage flow characteristics for being lauched purging, is carried out using conventional plane flow model in porous media
Naked eyes centimetre rank observation carries out millimeter rank under microscope using microexamination model and observes, using microcosmic scan model into
Micron level is observed under row CT scan, so as to from the formation mechenism of different dimensional analysis water seal gas；
(4) invention carries out displacement using dyeing water body, keeps displacement phenomenon more obvious, observation that can be more visual and clear
Water body direction of advance can intuitively analyze different layers position difference displacement position water enchroachment (invasion) intensity size and water seal by dyeing the depth
Gas reserves.
Detailed description of the invention
For clearer explanation experimental provision of the present invention, below only to testing the necessary model equipment schematic diagram
It is explained.
Fig. 1 is the schematic diagram that multiple dimensioned water seal mechanism of qi provided by the invention manages visual experimental apparatus.
Fig. 2 is the floor diagram of conventional plane flow model in porous media provided by the invention.
Fig. 3 is the cover plate schematic diagram of conventional plane flow model in porous media provided by the invention.
Fig. 4 is the floor diagram of microexamination model and microcosmic scan model provided by the invention.
Fig. 5 is the cover plate schematic diagram of microexamination model and microcosmic scan model provided by the invention.
Fig. 6 is the base plate interior schematic diagram of conventional plane flow model in porous media provided by the invention.
In figure: 1. displacements pump, 2. conventional plane flow models in porous media, 3. microexamination models, 4. microcosmic scan models, 5. back pressure
Valve, 6. air pumps, 7. metering devices, 8. connecting tubes, 9-1. high-pressure horizontal two-way valve, 9-2. high pressure hand-operated stop valve, 10. connections
Channel, 11. through-holes, 12. threaded holes, 13. seepage tanks, 14. protrusions, 15. power supplys, 16. normally closed type temperature detect switch (TDS)s, 17. electric heating
Silk.
Specific embodiment
In order to carry out becoming apparent from intuitive interpretation to advantages and objects of the present invention, with reference to the accompanying drawing to the present invention
Specific embodiment be illustrated.
As shown in Figure 1, managing visual experimental apparatus schematic diagram for the multiple dimensioned water seal mechanism of qi of high temperature and pressure provided by the invention
One of.The experimental provision includes displacement pump 1, conventional plane flow model in porous media 2, microexamination model 3, microcosmic scan model 4, returns
Pressure valve 5, air pump 6, metering device 7, connecting tube 8, high-pressure horizontal two-way valve 9-1, high pressure hand-operated stop valve 9-2.The wherein drive
It is high-pressure piston pump, model HP-100 for pump 1.Displacement pump 1 by crossover sub and connecting tube 8 respectively with four conventional planes
Flow model in porous media 2 is connected.The conventional plane flow model in porous media 2 outlet is connected with back-pressure valve 5 respectively, conventional plane flow model in porous media 2 and
Connectivity is controlled by high-pressure horizontal two-way valve 9-1 between back-pressure valve 5, back-pressure valve 5, which passes through, keeps pressure by being connected with air pump 6.It is aobvious
Micro- observing and nursing 3 and microcosmic scan model 4 are mounted on high pressure hand-operated section in the connecting tube 8 with conventional plane flow model in porous media 2
Only valve 9-2.The metering device 7 can measure each layer gas production and water yield.
As shown in Fig. 2, managing visual experimental apparatus schematic diagram for the multiple dimensioned water seal mechanism of qi of high temperature and pressure provided by the invention
Two, to illustrate 2 bottom plate feature of conventional plane flow model in porous media.The experimental provision includes interface channel 10, through-hole 11, screw thread
Hole 12, seepage tank 13.Wherein interface channel 10 is aligned to install connecting tube, nozzle position with seepage flow cell wall.Through-hole 11 to
Screw rod is installed, screw rod is compacted fix by nut.Threaded hole 12 leads directly to ferrule fitting and 8 phase of connecting tube to install stainless steel
Even.Seepage tank 13 is to fill quartz sand sample.
As shown in figure 3, managing visual experimental apparatus schematic diagram for the multiple dimensioned water seal mechanism of qi of high temperature and pressure provided by the invention
Three, to illustrate 2 cover board feature of conventional plane flow model in porous media.The experimental provision includes through-hole 11, threaded hole 12, protrusion
14.Described raised 14 use organic glass material, guarantee that model reaches effect of visualization.
As shown in figure 4, managing visual experimental apparatus schematic diagram for the multiple dimensioned water seal mechanism of qi of high temperature and pressure provided by the invention
Four, to illustrate 4 bottom plate feature of microexamination model 3 and microcosmic scan model.The experimental provision include interface channel 10,
Through-hole 11, seepage tank 13.Wherein 3 bottom plate of microexamination model is made of stainless steel material, and microcosmic 4 bottom plate of scan model is carbon
Fibrous material is made.
As shown in figure 5, managing visual experimental apparatus schematic diagram for the multiple dimensioned water seal mechanism of qi of high temperature and pressure provided by the invention
Five, to illustrate 4 cover board feature of microexamination model 3 and microcosmic scan model.The experimental provision includes through-hole 11, protrusion
14.Wherein 3 side edge thereof of microexamination model is stainless steel material, and protrusion 14 is pmma material；Microcosmic scan model 4 is covered
Plate is that carbon fibre material is made.
As shown in fig. 6, managing visual experimental apparatus schematic diagram for the multiple dimensioned water seal mechanism of qi of high temperature and pressure provided by the invention
Six, to illustrate 2 base plate interior feature of conventional plane flow model in porous media.The experimental provision includes power supply 15, normally closed type temperature control
Switch 16, heating wire 17.Wherein power supply 15 uses and is connected into 220V AC power source or uses dry batteries as the power source.Normally closed type temperature control
16 model BW9700 of switch, operating temperature are 40 DEG C.
Model is further illustrated below by a kind of preferred implementation method of the invention:
(1) model is installed
Suitable length connecting tube is first intercepted, is installed within interface channel 10, due between connecting tube 8 and interface channel 10
There are micro chinks, sufficiently sealed to guarantee, AB glue is uniformly coated between connecting tube 8 and interface channel 10 or seccotine fixation is close
Envelope.The 2mm thickness rubber pad to match with 2 size of conventional plane flow model in porous media is intercepted again, according to corresponding hole position to rubber pad
Drilling, eye diameter are slightly larger than 6mm.To guarantee effect of visualization, by side length corresponding with seepage tank in the middle part of sealing rubber pad
30cm square is clipped.Sealing rubber pad is installed on 2 bottom plate of conventional plane flow model in porous media, and in rubber pad and bottom plate
AB glue is coated between contact surface or seccotine sealing is fixed.Compared to silicagel pad, rubber pad has wearability height, high resiliency, firmly
Small feature is spent, therefore sealing effect is more preferable.With above-mentioned same method, microexamination model 3, microcosmic scan model 4 are installed
Connecting tube and rubber pad, and respectively on each threaded hole 12 install stainless steel lead directly to ferrule fitting, contacted in connector with hole wall
Place is wrapped with unsintered tape or smears a small amount of AB glue to reach sealing effect.
(2) back-up sand
After glue to be sealed is dry, conventional plane flow model in porous media 2, microexamination model 3, microcosmic scan model 4 are carried out respectively
Back-up sand operation.Using 60 mesh, the quartz sand of three kinds of different-grain diameters of 70 mesh and 80 mesh and AB glue as material, different-grain diameter quartz sand is utilized
And AB glue, the sand body of different-grain diameter size, different cementing degree is prepared respectively, according to requirement of experiment and design respectively to three moulds
Type inserts heterogeneous sand body.Filling in gauze with 8 interface of connecting tube in seepage tank 13 prevents sand migration to be lost.Insert sand body
Afterwards, each model cover board is installed, screw rod is installed on each through-hole 11 respectively and is compacted fix with nut, is reached using the protrusion on cover board
The purpose being sufficiently compacted to sand body.
(3) each instrument is connected
After back-up sand work is completed, each model is connected using connecting tube with crossover sub as shown in Figure 1 with instrument, will be driven
1 be connected with conventional plane flow model in porous media 2 for pump, microexamination model 3, microcosmic scan model 4 input pipe and efferent duct on
High pressure hand-operated stop valve 9-2 is installed, is successively connected into back-pressure valve 5 and metering device in 2 each layers of outlet end of conventional plane flow model in porous media
7, high-pressure horizontal two-way valve 9-1 is installed in the connecting tube between back-pressure valve 5 and each layer of conventional plane flow model in porous media 2, finally will
Air pump 6 accesses back-pressure valve 5.
(4) high temperature and pressure carries out the experiment of water drive gas
After the completion of the connection of all experimental provisions, water seal mechanism of qi under high temperature and pressure can be unfolded and manage research experiment.First close
High-pressure horizontal two-way valve 9-1 opens high pressure hand-operated stop valve 9-2, makes conventional plane flow model in porous media 2, microexamination model 3, micro-
It sees 4 three models of scan model and is in same pressure system.Then power supply 15 is accessed, model heating system is made to be in work shape
State starts as model heating.Displacement pump 1 is opened, gas is driven in into model by the way of constant speed displacement, is added for displacement model
Pressure.Air pump 6 is opened, is pressurizeed for back-pressure valve 5, back-pressure valve 5 is made to reach the pressure 10MPa of experiment setting.It is set when model reaches experiment
When determining temperature and pressure, high-pressure horizontal two-way valve 9-1 is opened, dyeing water body is slowly driven in into model, carries out the experiment of water drive gas, meter
Amount device 7 starts to measure the gas production and water yield of each model.When variation is 0 to 7 gas production of metering device for a long time, illustrate mould
Type without gas output, terminates displacement test.High pressure hand-operated stop valve 9-2 is closed, by microexamination model 3 and microcosmic is swept respectively
It retouches model 4 to remove, microexamination model 3 is observed under the microscope, microcosmic scan model 4 is seen under CT scan
It examines.
Show that we can form water drive gas feature and water seal gas rule and have by above-mentioned experiment sufficiently intuitively to recognize
Know.It under simulated formation high-temperature and high-pressure conditions, enables to experimentation and result closer to stratum real conditions, makes to test
As a result authenticity and convincingness are had more.On the basis of considering crossflow, by dyeing water body to conventional plane seepage flow mould
The intrusion at each each position in layer position of type 2 has more direct understanding, displacement water body to sand body water enchroachment (invasion) intensity according to the sand body dyeing depth
For blue dyeing water body, the ingredient of the water body is that distilled water adds methylene blue, then plus sodium sulfite, the water body can be in high temperature and pressure
Lower holding is stablized.Pass through the observation under the microscope to microexamination model 3 and the sight by CT scan to microcosmic scan model 4
It examines, Water Invasion Characteristics can be observed under millimeter and micron level respectively, and then from pore throat characteristic and micropore structure
Level researchs and analyses water seal gas formation mechenism.
The above is only an exemplary illustration to this experimental provision, it is not limited to this, is not departing from this hair
The lower any modifications and variations done of bright principle and design are within the scope of the present invention.
Claims (5)
- It is by displacement system, model system, metering system 1. a kind of multiple dimensioned water seal mechanism of qi of high temperature and pressure manages visual experimental apparatus System composition, it is characterised in that: the model system is by conventional plane flow model in porous media (2), microexamination model (3) and microcosmic scanning Model (4) three parts are constituted, conventional plane flow model in porous media (2) by four or four to eight conventional plane flow models in porous media (2) simultaneously Column are formed by connecting, and four conventional plane flow models in porous media (2) are formed by connecting by four connecting tubes (8) respectively, and four conventional planes seep 2-3 input pipes are provided on the left of flow model (2), input pipe is connected with displacement pump (1), four conventional plane seepage flow moulds 2-3 efferent ducts are provided on the right side of type (2), efferent duct is connected with back-pressure valve (5) input end, back-pressure valve (5) outlet end and Metering device (7) is connected, and back-pressure valve (5) is connect with air pump (6), keeps outlet pressures, back-pressure valve (5) and conventional plane seepage flow High-pressure horizontal two-way valve (9-1) is installed between model (2)；Input pipe, right side are provided on the left of the microexamination model (3) It is provided with efferent duct, input pipe passes through conventional plane flow model in porous media (2) with efferent duct and is connected by the threaded hole (12) of avris It connects；Input pipe is provided on the left of the microcosmic scan model (4), right side is provided with efferent duct, and input pipe and efferent duct are logical The threaded hole (12) that conventional plane flow model in porous media (2) are crossed by avris is connected；Above-mentioned conventional plane flow model in porous media (2), micro- sight It examines model (3) and microcosmic scan model (4) is made of cover board, sealing rubber pad, bottom plate three parts from top to bottom, microexamination Model (3) and microcosmic scan model (4) are connected by connecting tube (8) with conventional plane flow model in porous media (2) respectively, what is be connected High pressure hand-operated stop valve (9-2) is installed in connecting tube (8).
- 2. the multiple dimensioned water seal mechanism of qi of high temperature and pressure manages visual experimental apparatus according to claim 1, it is characterised in that: described Conventional plane flow model in porous media (2) and microexamination model (3) its main body are made of stainless steel material, cover board intermediate rectangular protrusion (14) it is partially made of organic tempered glass material, microcosmic scan model (4) is made of carbon fibre material；The conventional plane The bottom plate and cover board of flow model in porous media (2), microexamination model (3) and microcosmic scan model (4), in seepage tank (13) and model side Uniform through bore (11), aperture 0.6cm are provided between edge；Conventional plane flow model in porous media (2), microexamination model (3) and microcosmic Scan model (4) is equipped with the seepage tank (13) of 0.5cm depth, and cover board is equipped with the protrusion (14) of 0.2cm high.
- 3. the multiple dimensioned water seal mechanism of qi of high temperature and pressure manages visual experimental apparatus according to claim 1, it is characterised in that: described Conventional plane flow model in porous media (2) base plate interior is equipped with heating wire (17), heating wire (17) and normally closed type temperature detect switch (TDS) (16) and Power supply (15) series connection, constitutes temperature control heating system.
- 4. a kind of multiple dimensioned water seal mechanism of qi of high temperature and pressure as described in claim 1 manages visual experimental apparatus, it is characterised in that: press According to this experimental provision, preferably a kind of experimental method, experimental procedure are as follows:1. installing model: first intercepting suitable length connecting tube (8), be installed within interface channel (10), in connecting tube (8) and even It connects between road (10) and is uniformly coated with AB glue or seccotine fixing seal；It intercepts again and conventional plane flow model in porous media (2) size phase Identical 2mm thickness rubber pad drills on rubber pad according to corresponding hole position, and eye diameter is slightly larger than 6mm；By seal rubber Pad middle part side length 30cm square corresponding with seepage tank (13) is clipped, and sealing rubber pad is mounted on conventional plane flow model in porous media (2) on bottom plate, AB glue is coated between rubber pad and base plate contact surface or seccotine sealing is fixed；With above-mentioned same method, The connecting tube (8) and rubber pad of microexamination model (3) and microcosmic scan model (4) are installed, and respectively in each threaded hole (12) Upper installation stainless steel leads directly to ferrule fitting, applies a small amount of AB glue sealing in joint；2. back-up sand: carrying out back-up sand to conventional plane flow model in porous media (2), microexamination model (3) and microcosmic scan model (4) respectively Operation.Gauze is filled in seepage tank (13) and connecting tube (8) interface；By 60 mesh, the stone of 70 mesh and 80 three kinds of different-grain diameters of mesh Sand and AB glue are configured to the sand body of different-grain diameter size, different cementing degree, non-to three model (2,3,4) filling respectively Matter sand body；After inserting sand body, then each model cover board is installed, screw rod is installed on each through-hole (11) respectively, and be compacted admittedly with nut It is fixed；3. connecting each instrument: each model and instrument are attached with connecting tube (8) with crossover sub；By displacement pump (1) and often Plane flow model in porous media (2) are advised to be connected；Pacify on microexamination model (3) and the input pipe and efferent duct of microcosmic scan model (4) It fills high pressure hand-operated stop valve (9-2)；Back-pressure valve (5) and metering are sequentially connected in each layer outlet end of conventional plane flow model in porous media (2) Device (7), installation high-pressure horizontal two is logical in the connecting tube (8) between back-pressure valve (5) and conventional plane flow model in porous media (2) each layer Valve (9-1)；Air pump (6) are finally accessed into back-pressure valve (5)；4. under high-temperature and high-pressure conditions, carrying out the experiment of water drive gas: first closing high-pressure horizontal two-way valve (9-1), open high pressure hand-operated section Only valve (9-2) makes three models (2,3,4) be in same pressure system；Then power supply (15) are accessed, made at model heating system In working condition, heated for model；Displacement pump (1) is opened, gas is driven in into model by the way of constant speed displacement, reaches experiment The pressure 10MPa of setting；When model (2,3,4) reaches the temperature and pressure of experiment setting, high-pressure horizontal two-way valve (9- is opened 1) dyeing water body slowly, is driven in into model, carries out the experiment of water drive gas, metering device (7) measures the gas production of each model and produces water Amount；When variation is 0 to metering device (7) gas production for a long time, terminate displacement test.
- 5. the multiple dimensioned water seal mechanism of qi of high temperature and pressure according to claim 4 manages visualized experiment method, it is characterised in that: drive It is blue dyeing water body for water body, the ingredient of the water body is distilled water+methylene blue+sodium sulfite, which can be in high temperature height Pressure keeps stablizing.
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| CN110220835A (en) * | 2019-07-17 | 2019-09-10 | 中国科学院武汉岩土力学研究所 | Porous Media visualization device and calculation method of parameters under a kind of in-situ stress |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110080751A (en) * | 2019-05-28 | 2019-08-02 | 西安石油大学 | A kind of visualization proppant pore throat seepage flow and block test device and its application method |
| CN110080751B (en) * | 2019-05-28 | 2024-02-02 | 西安石油大学 | Visual proppant pore throat seepage and plugging testing device and application method thereof |
| CN110220835A (en) * | 2019-07-17 | 2019-09-10 | 中国科学院武汉岩土力学研究所 | Porous Media visualization device and calculation method of parameters under a kind of in-situ stress |
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| CN113029898A (en) * | 2021-02-22 | 2021-06-25 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
| CN113029898B (en) * | 2021-02-22 | 2022-04-15 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
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