CN106290784B - A kind of acid-rock reaction list rock beam board slit simulation apparatus and its working method - Google Patents
A kind of acid-rock reaction list rock beam board slit simulation apparatus and its working method Download PDFInfo
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Abstract
The present invention relates to a kind of acid-rock reaction list rock beam board slit simulation apparatus and its working methods.Acid-rock reaction list rock beam board slit simulation apparatus core is visual flat plate model, and the visual flat plate model includes seam plate corrosion clamper, holder, microscope, rotating device etc..The present invention also provides the working methods of the acid-rock reaction list rock beam board slit simulation apparatus.Compact overall structure of the present invention, with stronger bearing capacity, the fracture acidizing situation of simulation Different Strata inclination angle (0~90 °) may be implemented by rotating device by the present invention, and the growth of dynamic observation earthworm hole, extension situation and earthworm hole race condition may be implemented in the present invention.
Description
Technical field
The present invention relates to a kind of acid-rock reaction list rock beam board slit simulation apparatus and its working methods, belong to oil-gas reservoir volume increase and arrange
The technical field applied.
Background technology
It is acidified as the technical measures for developing low-porosity, low-permeability carbonate oil reservoir now, it can be effective
The pollution and blocking of near wellbore reservoir are released, the connectivity of pit shaft and reservoir is improved, restores or improve oil and gas production.Acidification
In, acid etching result can be divided into face corrosion, earthworm hole and uniform corrosion by corrosion form, two kinds of situations of face corrosion and uniform corrosion disappear
Consumption acid solution is more, and flow conductivity is poor；Earthworm hole is a kind of corrosion channel with high flow conductivity, and consumption acid solution in formation earthworm hole is few, changes
It is good to make effect.The corrosion form formed during Carbonate acidizing depends primarily on H+Mass transfer velocity and surface reaction speed.
Face corrosion is generated when mass transfer velocity is less than surface reaction speed, otherwise generates uniform corrosion, only when mass transfer velocity is close to table
It will produce earthworm hole when the reaction speed of face.And mass transfer velocity and surface reaction speed are respectively by acid solution injection rate and acid strength
Influence.The quantitative test in earthworm hole and the basis that analysis is acidification acid fracturing method minute design, therefore to earthworm hole growth rate
It is calculated with acid solution consumption, earthworm pore morphology and race condition is described, for improving acidizing treatment effect with important
Meaning.
Currently both at home and abroad to the research in earthworm hole based on empirical or semiempirical type, establishes a series of models and come to earthworm hole
Distribution is described, and is mainly realized by a series of dimensionless numbers to the evaluation in earthworm hole, such as Dai Mukele numbers Da, pendant Klatt
Number Pe etc., it is main to the description of earthworm hole growth rate to use for reference processing methods of the Buijse for earthworm leading edge opening fltting speed；And object
Based on rock core displacement test, optimal injection rate then is found by calculating breakthrough volume for mould experiment.This rock core displacement
Experimental method pumps note speed come the various injection rates at the scene of simulating by changing, and analyzes corresponding acidification result.However rock core
Displacement test has some limitations：(1) boundary effect influences strong.Rock core displacement test can only be in a smaller size
Upper simulation acidization, and carbonate rock anisotropism is strong, acidification forms earthworm hole and is easy to break through on side wall, the experiment to acquisition
Data generate error；(2) bearing capacity is poor, poor sealing.Acid can occur for acid solution at pipeline interface after pressure rise
The phenomenon that liquid leakage or even splash, so as to cause the failure of an experiment and is easy to be on the hazard safely；(3) experimentation is in envelope completely
It is completely not visible in the environment closed, experimentation can only be derived by experimental data and cannot directly observed；(4) mould
The method of quasi- formation temperature is made troubles to the intermediate operation of experiment and inspection to entire driving device spacial temperature elevation.
Chinese patent literature CN104407103B discloses a kind of multi-angle acid corrosion fracture test device, including
Connection in series-parallel acid etching injected system and flow conductivity test system, further include diversion chamber's model system, and for loading diversion chamber
Clossing pressure loading system, and control the back pressure control system of diversion chamber's outlet pressure, the gas of diversion chamber is emptied
Vacuum system carries out morphological analysis scanner and data processing system to the core surface after corrosion.The present invention is from small scale
The evaluation of fracture guide after acid etching and acid etching of the angle of simulation seam to carry out simulation seam, spiral is carried out to fracturing fluid, acid solution
Coil pipe shearing simulation and rheology testing.It, can be right by the simulating lab test of acid corrosion fracture evaluating apparatus
The various major influence factors of acid corrosion fracture are simulated, and find out best technological parameter, while can be in the dress
It sets and carries out various raising acid corrosion fracture new process New Measures progress analog studies.
The current country gradually starts with the construction of tablet experimental simulation formation acidizing, and there are two types of board devices used, a kind of
The rock beam as disclosed in above-mentioned Chinese patent literature CN104407103B, rock beam size is smaller, only 64.5cm2, boundary effect
Influence has certain weakening, but is only used for the test of flow conductivity substantially, and the earthworm hole formed on same rock beam can dash forward
It is broken, earthworm hole race condition cannot be explained well, while earthworm hole growing state can not be also viewed directly；It is another
Rock beam size used in flat plate model is larger, reduces the probability that earthworm hole breaks through to lateral edges, solves boundary effect influence, simultaneously
Device has preferable bearing capacity, but there are still following problems：(1) there are still the problem of visual difference, between two rock beams
Gap is smaller, and the video camera by side is difficult effectively to observe testing into Mobile state, and the growth rate in earthworm hole can not be direct
It calculates, and existing competition also can not be analyzed effectively between earthworm hole, main earthworm hole, secondary earthworm hole and the dead respective growth in earthworm hole
Situation can not be by visual record；(2) rock beam processing difficulties, the experiment too big but not ready-made process equipment of rock beam size, lead
It causes experimental group number less, illustrative experiment can only be carried out.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of acid-rock reaction list rock beam board slit simulation apparatus；
The present invention also provides the working methods of above-mentioned apparatus.
The technical scheme is that：
A kind of acid-rock reaction list rock beam board slit simulation apparatus, including injected system, pre-heating system, entrance detecting system, can
Depending on flat plate model, outlet detecting system, condenser, back pressure system, Mead-Bauer recovery system and data processing system；The injection system
System, the pre-heating system, the entrance detecting system, the visual flat plate model, the outlet detecting system, the back pressure system
System, the condenser, the Mead-Bauer recovery system penetrate through successively；
The injected system provides injection power for single rock beam board slit simulation apparatus and adjusts the speed of injection acid solution；
The entrance detecting system is used to acquire the pressure, temperature, flow of the visual flat plate model arrival end fluid；The preheating system
The acid solution of injection is preheating to requirement of experiment temperature by system；The visual flat plate model is used for the acid solution flowing in dynamic observation crack
Situation simultaneously provides a kind of structure for simulating the acid-rock reaction under different parameters；The outlet detecting system is described visual for acquiring
The pressure of flat plate model outlet end fluid, temperature, flow；The condenser, which condenses high temperature wastewater, to cool down；The back pressure system
For controlling the visual flat plate model outlet end back pressure, keep back pressure constant in requirement of experiment numerical value；The devil liquor recovery system
System is used for Recycling of waste liquid；The data processing system be used for arrange calculate the collected visual flat plate model arrival end,
Outlet end experimental data.
According to currently preferred, the visual flat plate model includes seam plate corrosion clamper, holder, microscope, described
Stitch the setting of plate corrosion clamper on the bracket, seam plate corrosion clamper top is equipped with the microscope.For single rock
The extension of observation earthworm hole and race condition in plate experiment.
According to currently preferred, the seam plate corrosion clamper includes babinet, transparency glass plate, T shapes piston, thick line pipe
Interface, the two sides of the babinet are equipped with the thick line interface tube being connected in the babinet, and being equipped with the T shapes in the babinet lives
One end of plug, the T shapes piston is arranged in the babinet, and the babinet top is equipped with the transparency glass plate；
The T shapes piston includes piston main body, rock beam, rubber pallet, fluid chamber, fluid injection pipeline, is set in the T shapes piston
Have a fluid chamber, the fluid chamber top be equipped with the fixed rubber pallet of the T shapes piston, on the rubber pallet
The fixed rock beam, the rock beam are equipped with the transparency glass plate, and the rock beam surface is equipped with scale, for directly reading earthworm
Hole length, the fluid chamber lower part are connected to the fluid injection pipeline.It is the rock beam by being pumped into high-temp liquid to the fluid chamber
Confining pressure is provided and experiment required temperature is provided.
According to currently preferred, rotating device is additionally provided on the holder, the rotating device includes two rotary shafts,
One end of the rotary shaft connects the holder, and the other end is embedded in the babinet by keyway；The rotation of the rotary shaft drives
0-90 ° of rotation of the babinet.
According to currently preferred, the value range of the length of the babinet is respectively 500-800mm, 300-
500mm、300-400mm；The value range of the length of the rock beam is respectively 200-400mm, 100-300mm, 5-15mm.
It is further preferred that the value range of the length of the babinet is respectively 800mm, 400mm, 350mm；It is described
The value range of the length of rock beam is respectively 300mm, 200mm, 10mm.
According to currently preferred, the entrance detecting system is connected to the babinet by extra heavy pipe line, to prevent common tube
Line flexural deformation and cannot be in close contact with rock beam；The extra heavy pipe line connects the extra heavy pipe line interface, and the extra heavy pipe line internal diameter is
5mm, outer diameter 60mm, the visual flat plate model top is equipped with gas blow valve, for adjusting the acid-rock reaction list rock beam
Pressure balance in board slit simulation apparatus.The fluid chamber surface is coated with heat-barrier material.By being pumped into high-temperature liquid to the fluid chamber
Body provides confining pressure for rock beam and provides experiment required temperature.
According to currently preferred, the injected system includes intermediate receptacle, acid-proof pump, and the intermediate receptacle passes through valve
It is connected to the acid-proof pump；
The pre-heating system includes preheating coil pipe, temperature monitor, and the preheating coil pipe includes helical heating pipe and is sleeved on
Muff on the helical heating pipe, the helical heating pipe connect the temperature monitor；Described in the acid-proof pump connection
Preheat coil pipe；
The entrance detecting system includes inlet flow rate meter, inlet pressure transducer, inlet temperature detector, the preheating
Coil pipe is connected to the inlet flow rate meter, and the inlet flow rate meter is connected to the arrival end of the visual flat plate model, institute by valve
State inlet pressure transducer, the inlet temperature detector connects the arrival end of the visual flat plate model；
The outlet detecting system includes outlet stream gauge, outlet pressure sensor, outlet temperature detector, described visual
The outlet end of flat plate model connects the outlet pressure sensor, the outlet temperature detector；
The back pressure system includes back-pressure valve, back pressure container, back pressure meter and backpressure pump, the outlet of the visual flat plate model
End is respectively communicated with the back pressure container, the backpressure pump by the back-pressure valve；
The Mead-Bauer recovery system includes gas-liquid separator, waste liquid tank；It is the back-pressure valve, the gas-liquid separator, described
Outlet stream gauge, the condenser, the waste liquid tank are sequentially communicated, and the gas-liquid separator is connected to the outlet stream by valve
Gauge.
The data processing system includes acquisition control processing software, industrial personal computer, printer, switch board.The acquisition control
Processing software processed is run under Win7 or Win10 environment, is programmed using VB.
The working method of above-mentioned acid-rock reaction list rock beam board slit simulation apparatus, specific steps include：
(1) formation rock, i.e. carbonate rock are chosen, the formation rock is processed into the rock beam, is packed into seam plate corrosion
Clamper connects acid-rock reaction list rock beam board slit simulation apparatus, and opens the data processing system；
(2) gas blow valve is opened, pressure balance in acid-rock reaction list rock beam board slit simulation apparatus is adjusted, gas is closed and puts
Empty valve；
(3) acid solution of configuration quality a concentration of 0~37%, is poured into the intermediate receptacle；The preheating coil pipe is opened, it will
Temperature is adjusted to 20~120 DEG C；The back pressure system is opened, the back pressure of 0~8MPa is set；Open the inlet flow rate meter, institute
State inlet pressure transducer, the inlet temperature detector, the outlet stream gauge, the outlet pressure sensor, it is described go out
Mouth temperature monitor, the condenser, the microscope；
(4) setting injection rate is 0~1.5L/h, opens the acid-proof pump, will the intermediate appearance by the acid-proof pump
Acid solution in device is pumped into the preheating coil pipe successively, is pumped into the visual flat plate model；
(5) institute is acquired by the inlet flow rate meter, the inlet pressure transducer, the inlet temperature detector in real time
The flow of visual flat plate model arrival end fluid, pressure, temperature are stated, the outlet stream gauge, outlet pressure sensing are passed through
Device, the outlet temperature detector acquire the flow of the visual flat plate model outlet end fluid, pressure, temperature in real time, pass through
The microscope acquires the pictorial information of the growth of earthworm hole, earthworm hole and the competition of earthworm hole in real time；
(6) data of step (5) acquisition and pictorial information are transmitted to the data processing system, obtain earthworm hole growth speed
Rate, the real time data of rock beam permeability variation simultaneously analyze earthworm hole race condition.
Beneficial effects of the present invention are：
1, rock beam size of the present invention, scale is smaller, it is easy to disassemble to be tested with repetition.The present invention is enterprising in existing instrument
Row improves, and keeps overall structure more compact, has stronger bearing capacity, can bear lab space internal pressure and reach 7MPa.
2, the present invention, which has filled up existing board device, cannot carry out the blank of single rock beam acid-rock reaction experiment.
3, the fracture acidizing situation of simulation Different Strata inclination angle (0~90 °) may be implemented by rotating device by the present invention.
4, the growth of dynamic observation earthworm hole, extension situation and earthworm hole race condition may be implemented in the present invention.
Description of the drawings
Fig. 1 is the structure diagram of acid-rock reaction list rock beam board slit simulation apparatus of the present invention；
Fig. 2 is the structural schematic diagram one of visual flat plate model of the invention；
Fig. 3 is the structural schematic diagram two of visual flat plate model of the invention；
Fig. 4 is the structural schematic diagram one of present invention seam plate corrosion clamper；
Fig. 5 is the structural schematic diagram two of present invention seam plate corrosion clamper.
Fig. 6 is the structural schematic diagram of inventive piston；
Fig. 7 is the structural schematic diagram of rubber pallet of the present invention；
1, intermediate receptacle, 2, acid-proof pump, 3, preheating coil pipe, 4, inlet flow rate meter, 5, inlet pressure transducer, 6, entrance temperature
Spend detector, 7, visual flat plate model, 8, outlet pressure sensor, 9, outlet temperature detector, 10, outlet stream gauge, 11, return
Pressure valve, 12, back pressure container, 13, back pressure meter, 14, backpressure pump, 15, gas-liquid separator, 16, condenser, 17, waste liquid tank, 18, gas
Body blow valve, 19, data processing system, 20, holder, 21, microscope, 22, babinet, 23, transparency glass plate, 24, T shape pistons,
25, thick line interface tube, 26, piston main body, 27, rock beam, 28, rubber pallet, 29, fluid chamber, 30, fluid injection pipeline, 31, rotation
Axis, 32, keyway, 33, scale.
Specific implementation mode
The present invention is further qualified with embodiment with reference to the accompanying drawings of the specification, but not limited to this.
Embodiment 1
A kind of acid-rock reaction list rock beam board slit simulation apparatus, as shown in Figure 1, including injected system, pre-heating system, entrance inspection
Examining system, visual flat plate model 7, outlet detecting system, condenser 16, back pressure system, Mead-Bauer recovery system and data processing system
System 19；Injected system, pre-heating system, entrance detecting system, visual flat plate model, outlet detecting system 7, back pressure system, condensation
Device 16, Mead-Bauer recovery system penetrate through successively；
Injected system provides injection power for single rock beam board slit simulation apparatus and adjusts the speed of injection acid solution；Entrance detects
System is used to acquire the pressure, temperature, flow of 7 arrival end fluid of the visual flat plate model；Pre-heating system is by the acid solution of injection
It is preheating to requirement of experiment temperature；Visual flat plate model 7 is for the acid solution mobility status in dynamic observation crack and provides a kind of mould
The structure of acid-rock reaction under quasi- different parameters；Outlet detecting system is used to acquire the pressure of 7 outlet end fluid of visual flat plate model
Power, temperature, flow；Condenser 16, which condenses high temperature wastewater, to cool down；Back pressure system is returned for controlling 7 outlet end of visual flat plate model
Pressure keeps back pressure constant in requirement of experiment numerical value；Mead-Bauer recovery system is used for Recycling of waste liquid；Data processing system 19 is for arranging
Calculate arrival end, the outlet end experimental data of collected visual flat plate model 7.Pipe valve system is for connecting and controlling each
System, including injected system, pre-heating system, entrance detecting system, visual flat plate model 7, outlet detecting system, condenser 16,
Back pressure system, Mead-Bauer recovery system and data processing system 19.
Visual flat plate model 7 includes seam plate corrosion clamper, holder 20, microscope 21, and seam plate corrosion clamper setting exists
On holder 20, seam plate corrosion clamper top is equipped with microscope 21.Observation earthworm hole extends and competes feelings in being tested for single rock beam
Condition.
It is as shown in Figure 2,3 to stitch plate corrosion clamper, including babinet 22, transparency glass plate 23, T shapes piston 24, thick line pipe connect
Mouth 25, the two sides of babinet 22 are equipped with the thick line interface tube 25 being connected in babinet 22, T shapes piston 24, T shapes are equipped in babinet 22
One end of piston 24 is arranged in babinet 22, and 22 top of babinet is equipped with transparency glass plate 23；
T shapes piston 24 includes piston main body 26, rock beam 27, rubber pallet 28, fluid chamber 29, fluid injection pipeline 30, T shape pistons
Be equipped with fluid chamber 29 in 26,29 top of fluid chamber be equipped with 24 fixed rubber pallet 28 of T shapes piston, it is fixed on rubber pallet 28
Rock beam 27, rock beam 27 are equipped with transparency glass plate 23, and 27 surface of rock beam is equipped with scale 33, for directly reading earthworm hole length, liquid
29 lower part of body cavity is connected to fluid injection pipeline 30.It is that rock beam 27 provides confining pressure and provides experiment by being pumped into high-temp liquid to fluid chamber 29
Required temperature.
Rotating device is additionally provided on holder 20, rotating device includes two rotary shafts 31, one end connection branch of rotary shaft 31
Frame 20, the other end are embedded in babinet 22 by keyway 32；The rotation of rotary shaft 31 drives babinet 22 to rotate 0-90 °.
The value of the length of babinet 22 is respectively 800mm, 400mm, 350mm；The value of the length of rock beam 27
Respectively 300mm, 200mm, 10mm.
Entrance detecting system is connected to babinet 22 by extra heavy pipe line, cannot be with rock beam 27 to prevent the flexural deformation of common tube line
It is in close contact；Extra heavy pipe line connects extra heavy pipe line interface 25, and extra heavy pipe line internal diameter is 5mm, outer diameter 60mm, 7 top of visual flat plate model
Equipped with gas blow valve 18.For adjusting pressure balance in acid-rock reaction list rock beam board slit simulation apparatus.29 surface of fluid chamber applies
There is heat-barrier material.It is that rock beam 27 provides confining pressure and provides experiment required temperature by being pumped into high-temp liquid to fluid chamber 29.
Injected system includes intermediate receptacle 1, acid-proof pump 2, and intermediate receptacle 1 is connected to acid-proof pump 2 by valve；Acid-proof pump 2
Maximum stream flow is 1L/h, maximum injection pressure 10MPa, and pump head endoporus uses F4 substrates, plunger to use Hastelloy, acid-proof pump 2
Flow-rate adjustment using frequency converter adjust, flow may be implemented in operation room carry out remote control.The volume of intermediate receptacle 1 is 2L,
Using plastics can container.
Pre-heating system includes preheating coil pipe 3, temperature monitor, and preheating coil pipe 3 includes helical heating pipe and is sleeved on spiral and adds
Muff on heat pipe, helical heating pipe connect temperature monitor；The connection preheating coil pipe 3 of acid-proof pump 2；Preheat coil pipe 3 temperature control essence
Degree is ± 0.5 DEG C.
Entrance detecting system includes inlet flow rate meter 4, inlet pressure transducer 5, inlet temperature detector 6, preheats coil pipe 3
It is connected to inlet flow rate meter 4, inlet flow rate meter 4 is connected to the arrival end of visual flat plate model 7 by valve, inlet pressure transducer 5,
Inlet temperature detector 6 connects the arrival end of visual flat plate model 7；
It includes outlet stream gauge 10, outlet pressure sensor 8, outlet temperature detector 9, visual tablet to export detecting system
Outlet end connection outlet pressure sensor 8, the outlet temperature detector 9 of model 7；
Inlet pressure transducer 5 and 8 range of outlet pressure sensor are 10MPa, precision 0.1%FS, subsidiary pressure
Digital display secondary meter.Pressure digital display secondary meter is four and half, and band RS232 interface is, it can be achieved that and computer networking.
Inlet flow rate meter 4 and outlet stream gauge 10 select the full tetrafluoro flowmeter of corrosion resistant acid and alkali-resistance, pipe diameter Φ
5mm, flow 1.5L/h, 0~10MPa of operating pressure rise matter temperature：- 10 °~180 °, accuracy is ± 0.5%, shell material
For stainless steel, power supply：Interior power 3v, dispatch from foreign news agency 5v~24v, output signal are 4~20mA of pulse signal.
Inlet temperature detector 6 and 9 detection range of outlet temperature detector are room temperature~120 DEG C, temperature-controlled precision ± 0.5
DEG C, with RS232 interface, it can be achieved that networking with computer.
Back pressure system includes back-pressure valve 11, back pressure container 12, back pressure meter 13 and backpressure pump 14, and visual flat plate model 7 goes out
Mouth end is respectively communicated with back pressure container 12, backpressure pump 14 by back-pressure valve 11；
Mead-Bauer recovery system includes gas-liquid separator 15, waste liquid tank 17；Back-pressure valve 11, gas-liquid separator 15, rate of discharge
Meter 10, condenser 16, waste liquid tank 17 are sequentially communicated, and gas-liquid separator 15 is connected to outlet stream gauge 10 by valve.Waste liquid tank 17
Volume is 50L, using plastic barrel.Condenser 16 uses coil pipe type helical structure, additional cool circulation water nested structure.
Pipe valve system includes all extra heavy pipe line and valve.Extra heavy pipe line outer diameter is 5mm.Valve maximum pressure-bearing is 7MPa.
Valve uses Hastelloy, can bear the acid and alkali corrosion under operating temperature.
Embodiment 2
The working method of acid-rock reaction list rock beam board slit simulation apparatus, specific steps described in embodiment 1 include：
(1) formation rock, i.e. carbonate rock are chosen, formation rock is processed into rock beam 27, seam plate is packed into and corrodes clamper,
Acid-rock reaction list rock beam board slit simulation apparatus is connected, and opens data processing system 19；
(2) gas blow valve 18 is opened, pressure balance in acid-rock reaction list rock beam board slit simulation apparatus is adjusted, closes gas
Blow valve 18；
(3) acid solution of configuration quality a concentration of 18%, is poured into intermediate receptacle 1；Preheating coil pipe 3 is opened, temperature is adjusted
It is 70 DEG C；Back pressure system is opened, the back pressure of 4Mpa is set；Open inlet flow rate meter 4, inlet pressure transducer 5, inlet temperature inspection
Survey instrument 6, outlet stream gauge 10, outlet pressure sensor 8, outlet temperature detector 9, condenser 16, microscope 21；
(4) setting injection rate be 0.75L/h, open acid-proof pump 2, by acid-proof pump 2 by the acid solution in intermediate receptacle 1 according to
It is secondary to be pumped into preheating coil pipe 3, it is pumped into visual flat plate model 7；
(5) visual tablet mould is acquired by inlet flow rate meter 4, inlet pressure transducer 5, inlet temperature detector 6 in real time
The flow of 7 arrival end fluid of type, pressure, temperature, pass through outlet stream gauge 10, outlet pressure sensor 8, outlet temperature detector
9 acquire 7 outlet end fluid of visual flat plate model in real time flow, pressure, temperature, pass through the acquisition earthworm hole life in real time of microscope 21
The pictorial information of long, earthworm hole and the competition of earthworm hole；
(6) data of step (5) acquisition and pictorial information are transmitted to data processing system 19, obtain earthworm hole growth speed
Rate, the real time data of rock beam permeability variation simultaneously analyze earthworm hole race condition.
Claims (7)
1. a kind of acid-rock reaction list rock beam board slit simulation apparatus, which is characterized in that including injected system, pre-heating system, entrance inspection
Examining system, visual flat plate model, outlet detecting system, condenser, back pressure system, Mead-Bauer recovery system and data processing system；
The injected system, the pre-heating system, the entrance detecting system, the visual flat plate model, the outlet detecting system,
The back pressure system, the condenser, the Mead-Bauer recovery system penetrate through successively；
The injected system provides injection power for single rock beam board slit simulation apparatus and adjusts the speed of injection acid solution；It is described
Entrance detecting system is used to acquire the pressure, temperature, flow of the visual flat plate model arrival end fluid；The pre-heating system will
The acid solution of injection is preheating to requirement of experiment temperature；The visual flat plate model is used for the acid solution mobility status in dynamic observation crack
And provide a kind of structure for simulating the acid-rock reaction under different parameters；The outlet detecting system is for acquiring the visual tablet
The pressure of mold exit end fluid, temperature, flow；The condenser, which condenses high temperature wastewater, to cool down；The back pressure system is used for
The visual flat plate model outlet end back pressure is controlled, keeps back pressure constant in requirement of experiment numerical value；The Mead-Bauer recovery system is used
In Recycling of waste liquid；The data processing system is used to arrange the arrival end for calculating the collected visual flat plate model, outlet
Hold experimental data；
The visual flat plate model includes seam plate corrosion clamper, holder, microscope, and the seam plate corrosion clamper is arranged in institute
It states on holder, seam plate corrosion clamper top is equipped with the microscope；
The seam plate corrosion clamper includes babinet, transparency glass plate, T shapes piston, thick line interface tube, the two sides of the babinet
Equipped with the thick line interface tube being connected in the babinet, the T shapes piston, one end of the T shapes piston are equipped in the babinet
It is arranged in the babinet, the babinet top is equipped with the transparency glass plate；
The T shapes piston includes piston main body, rock beam, rubber pallet, fluid chamber, and fluid injection pipeline, the T shapes piston is interior to be equipped with institute
State fluid chamber, the fluid chamber top be equipped with the fixed rubber pallet of the T shapes piston, it is fixed on the rubber pallet
The rock beam, the rock beam are equipped with the transparency glass plate, and the rock beam surface is equipped with scale, the fluid chamber lower part connection
The fluid injection pipeline.
2. a kind of acid-rock reaction list rock beam board slit simulation apparatus according to claim 1, which is characterized in that on the holder
It is additionally provided with rotating device, the rotating device includes two rotary shafts, and one end of the rotary shaft connects the holder, the other end
It is embedded in the babinet by keyway；The rotation of the rotary shaft drives 0-90 ° of rotation of the babinet.
3. a kind of acid-rock reaction list rock beam board slit simulation apparatus according to claim 2, which is characterized in that the babinet
The value range of length is respectively 500-800mm, 300-500mm, 300-400mm；The length of the rock beam takes
Value range is respectively 200-400mm, 100-300mm, 5-15mm.
4. a kind of acid-rock reaction list rock beam board slit simulation apparatus according to claim 3, which is characterized in that the babinet
The value range of length is respectively 800mm, 400mm, 350mm；The value range of the length of the rock beam is respectively
300mm、200mm、10mm。
5. a kind of acid-rock reaction list rock beam board slit simulation apparatus according to claim 4, which is characterized in that the entrance inspection
Examining system is connected to the babinet by extra heavy pipe line, and the extra heavy pipe line connects the extra heavy pipe line interface, and the extra heavy pipe line internal diameter is
5mm, outer diameter 60mm, the visual flat plate model top are equipped with gas blow valve, and the fluid chamber surface is coated with heat-barrier material.
6. a kind of acid-rock reaction list rock beam board slit simulation apparatus according to claim 5, which is characterized in that the injection system
System includes intermediate receptacle, acid-proof pump, and the intermediate receptacle is connected to the acid-proof pump by valve；
The pre-heating system includes preheating coil pipe, temperature monitor, and the preheating coil pipe includes helical heating pipe and is sleeved on described
Muff on helical heating pipe, the helical heating pipe connect the temperature monitor；The acid-proof pump is connected to the preheating
Coil pipe；
The entrance detecting system includes inlet flow rate meter, inlet pressure transducer, inlet temperature detector, the preheating coil pipe
Be connected to the inlet flow rate meter, the inlet flow rate meter is connected to the arrival end of the visual flat plate model by valve, it is described enter
Mouth pressure sensor, the inlet temperature detector connect the arrival end of the visual flat plate model；
The outlet detecting system includes outlet stream gauge, outlet pressure sensor, outlet temperature detector, the visual tablet
The outlet end of model connects the outlet pressure sensor, the outlet temperature detector；
The back pressure system includes back-pressure valve, back pressure container, back pressure meter and backpressure pump, and the outlet end of the visual flat plate model is logical
It crosses the back-pressure valve and is respectively communicated with the back pressure container, the backpressure pump；
The Mead-Bauer recovery system includes gas-liquid separator, waste liquid tank；The back-pressure valve, the gas-liquid separator, the outlet
Flowmeter, the condenser, the waste liquid tank are sequentially communicated, and the gas-liquid separator is connected to the rate of discharge by valve
Meter.
7. a kind of working method of acid-rock reaction list rock beam board slit simulation apparatus described in claim 6, which is characterized in that specific
Step includes：
(1) formation rock, i.e. carbonate rock are chosen, the formation rock is processed into the rock beam, is packed into seam plate corrosion clamping
Device connects acid-rock reaction list rock beam board slit simulation apparatus, and opens the data processing system；
(2) gas blow valve is opened, pressure balance in acid-rock reaction list rock beam board slit simulation apparatus is adjusted, closes gas emptying
Valve；
(3) acid solution of configuration quality a concentration of 0~37%, is poured into the intermediate receptacle；The preheating coil pipe is opened, by temperature
It is adjusted to 20~120 DEG C；The back pressure system is opened, the back pressure of 0~8MPa is set；Open the inlet flow rate meter, it is described enter
Mouth pressure sensor, the inlet temperature detector, the outlet stream gauge, the outlet pressure sensor, outlet temperature
Spend detector, the condenser, the microscope；
(4) setting injection rate is 0~1.5L/h, opens the acid-proof pump, will be in the intermediate receptacle by the acid-proof pump
Acid solution be pumped into the preheating coil pipe successively, be pumped into the visual flat plate model；
(5) by the inlet flow rate meter, the inlet pressure transducer, the inlet temperature detector in real time acquisition described in can
Depending on the flow of flat plate model arrival end fluid, pressure, temperature, pass through the outlet stream gauge, the outlet pressure sensor, institute
It states outlet temperature detector and acquires the flow of the visual flat plate model outlet end fluid, pressure, temperature in real time, by described aobvious
Micro mirror acquires the pictorial information of the growth of earthworm hole, earthworm hole and the competition of earthworm hole in real time；
(6) by step (5) acquisition data and pictorial information be transmitted to the data processing system, obtain earthworm hole growth rate,
The real time data of rock beam permeability variation simultaneously analyzes earthworm hole race condition.
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| CN110208265A (en) * | 2019-06-20 | 2019-09-06 | 中国石油大学(华东) | Acid-rock reaction list rock beam board slit simulation apparatus and working method |
| CN111024584A (en) * | 2019-12-30 | 2020-04-17 | 中国石油大学(华东) | Acid rock reaction double-rock-plate fracture-cave simulation device and working method thereof |
| CN111272978B (en) * | 2020-02-26 | 2021-04-09 | 西南石油大学 | Evaluation of CO2Device and method for testing influence on flat acid rock reaction rate |
| CN112964603B (en) * | 2021-03-02 | 2022-10-28 | 中国石油大学(华东) | Multi-rock-disk acid liquid radial flow real-time imaging simulation system for fracture-cave carving and working method thereof |
| CN117054284B (en) * | 2023-10-12 | 2023-12-22 | 西南石油大学 | Acid rock reaction rate prediction device and method |
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