CN107816342A - Crack inner support agent migration rule visual experimental apparatus and method - Google Patents
Crack inner support agent migration rule visual experimental apparatus and method Download PDFInfo
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- CN107816342A CN107816342A CN201610823150.1A CN201610823150A CN107816342A CN 107816342 A CN107816342 A CN 107816342A CN 201610823150 A CN201610823150 A CN 201610823150A CN 107816342 A CN107816342 A CN 107816342A
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- 238000013508 migration Methods 0.000 title claims abstract description 26
- 230000005012 migration Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000000007 visual effect Effects 0.000 title claims abstract description 13
- 239000012530 fluid Substances 0.000 claims abstract description 60
- 238000004088 simulation Methods 0.000 claims abstract description 59
- 239000011435 rock Substances 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 230000000877 morphologic effect Effects 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims description 20
- 229920005989 resin Polymers 0.000 claims description 20
- 238000002474 experimental method Methods 0.000 claims description 17
- 238000010146 3D printing Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000001802 infusion Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920005479 Lucite® Polymers 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Abstract
The invention discloses a kind of crack inner support agent migration visual experimental apparatus and method.The device includes pit shaft analogue unit, results of fracture simulation unit and stratum analogue unit, and the results of fracture simulation unit includes two pieces of opposed transparent panels, is provided with crack between two pieces of transparent panels, the real rock beam crack to be measured of the morphological Simulation in the crack；The pit shaft analogue unit is connected to one end of the results of fracture simulation unit, is provided with the fracturing fluid inlet passage connected with the crack, proppant is carried in the fracturing fluid；The stratum analogue unit is connected to the other end of results of fracture simulation unit, is provided with the fracturing fluid outlet passage connected with the crack.The real rock beam crack to be measured of fracture pattern simulation in experimental provision of the present invention, it is contemplated that the influence that proppant is migrated in true fracture faces form fracture.
Description
Technical field
The present invention relates to oil-gas mining technical field, and in particular to a kind of crack inner support agent migration visual experimental apparatus
And method.
Background technology
With the sustainable growth of domestic and international Demand of Oil ＆ Gas and the continuous decline of conventional gas and oil yield, including shale gas, coal seam
The unconventionaloil pools such as gas show huge resource potential, and the exploitation of unconventional petroleum resources generally requires to carry out hydraulic fracturing
Deng well stimulation.Hydraulic fracturing technology principle is that the injection rate of fracturing fluid exceedes the infiltration rate of reservoir, causes bottom pressure
More than the fracture pressure of reservoir rock, reservoir opens and produces crack, is then poured into the load fluid with proppant, avoid due to
The effect fracturing fracture of crustal stress closes again.Stitched because sedimentation of the proppant in crack and migration rule influence proppant
Interior laying situation, so as to influence the support flow conductivity of man-made fracture, directly determine the final effect of fracturing reform.Cause
This, research proppant is settled in true crack and migration rule is significant.
Oil and gas industry standard SY/T6302-2009《The short-term flow conductivity evaluation of fracturing propping agents filling bed is recommended
Method》In disclose a kind of method for testing proppant pack flow conductivity, wherein proppant using the method that uniformly lays,
Dynamic settling of the proppant in true crack and the laying form after migration can not be simulated.
There is a kind of dynamic for being used for proppant flow conductivity test under simulation stratum condition to lay device, dress in the prior art
The mixing liquid that can simulate crosslinked fracturing fluid and proppant is put to move along pit shaft into what stratum gradually heated during infusion
State process, and enter diversion chamber by certain speed infusion, realize dynamic sanding.The device can not simulate proppant in different seams
The dynamic settling and migration process in true crack under wide.
It is presently disclosed to be used to simulate proppant and settle in crack to fail simulation very with the experimental provision of migration rule
Real crack.
The content of the invention
In order to solve above-mentioned technical problem, the present invention provide a kind of crack inner support agent migration visual experimental apparatus and
Method, the more real fracturing process simulated in oil-gas field development, the fortune of observable and record proppant in true crack
Move rule.
Specifically, including following technical scheme：
A kind of crack inner support agent migration visual experimental apparatus, including pit shaft analogue unit, results of fracture simulation unit and ground
Layer analogue unit,
The results of fracture simulation unit includes two pieces of opposed transparent panels, is provided with crack between two pieces of transparent panels, institute
State the morphological Simulation in crack really rock beam crack to be measured；
The pit shaft analogue unit is connected to one end of the results of fracture simulation unit, is provided with the pressure connected with the crack
Liquid inlet passage is split, proppant is carried in the fracturing fluid；The stratum analogue unit is connected to results of fracture simulation unit
The other end, it is provided with the fracturing fluid outlet passage connected with the crack.
Selectively, the results of fracture simulation unit is made by the following manner：
With 3 D laser scanning rock beam crack to be measured, three-dimensional modeling is carried out using obtained scan data, 3D printing goes out to split
Face mould tool is stitched, pours to obtain two pieces of transparent panels in middle sandwiched crack.
Selectively, support frame and pad are additionally provided between two pieces of transparent panels, by bolt by described two pieces
Transparent panel, support frame and pad are fixed, and the pad by changing different-thickness adjusts the width in the crack.
Selectively, the support frame and pad are hollow frame structure, and the support frame is in the crack
One end of analogue unit and the other end are provided with opening.
Selectively, the fracturing fluid inlet passage is arranged on the upside of the pit shaft analogue unit, the shaft drum form
The extraction raffinate outlet passage connected with the crack is provided with the downside of quasi-simple member.
Selectively, the fracturing fluid inlet passage is connected with screw pump and flow container, for by the screw pump and
Flow container carries the fracturing fluid of proppant toward being pumped into the crack.
Selectively, the results of fracture simulation unit is provided with pressure sensor, the pressure sensor be arranged on it is described
The connectivity part of crack and the fracturing fluid inlet passage and with the crack and the connectivity part of the fracturing fluid outlet passage
Corresponding position, to record pressure condition.
Selectively, in addition to video camera, imaged for being directed at the results of fracture simulation unit.
A kind of crack inner support agent migration visualized experiment method, including：
The rock beam for treating simulated formation is chosen, rock beam fracture faces are scanned using three-dimensional laser scanner, obtains rock
The three-dimensional data in plank split face；
Rock beam fracture surface three-dimensional data is modeled using computer, rock beam fracture surface is printed by 3D printing technique
Mould and box is poured, two blocks of transparent resins seam plates are poured out with transparent resin；
Assembling includes the experimental provision of pit shaft analogue unit, results of fracture simulation unit and stratum analogue unit；
The fracturing fluid for carrying proppant is pumped into the pit shaft analogue unit, so that the fracturing fluid for carrying proppant passes through institute
After stating results of fracture simulation unit, flowed out from the fracturing fluid outlet of the stratum analogue unit；
Record laying and migration of the proppant in crack in real time by high-speed camera, and pass through pressure sensor
Record the pressure of results of fracture simulation unit arrival end and the port of export.
Selectively, the experiment of the fracturing fluid is pumped into discharge capacity and determined according to site operation discharge capacity, and formula is as follows：
In formula：QeDischarge capacity, m are pumped into for experiment3/min；QfFor site operation discharge capacity, m3/min；hfIt is high for site operation crack
Degree, m；heFor the fracture height of results of fracture simulation unit, m；wfFor site operation fracture width, mm；weFor splitting for results of fracture simulation unit
Slit width degree, mm.
The beneficial effect of technical scheme provided in an embodiment of the present invention is：
1st, in the experiment of conventional simulation seam endoparticle migration settlement law, the smooth crack flat board that uses, this
The real rock beam crack to be measured of fracture pattern simulation of invention, it is contemplated that proppant is migrated in true fracture faces form fracture
Influence；
2nd, in the experiment of conventional simulation seam inner support agent settlement law, the crack flat board for experiment is from beginning to end all
Do not change, transparent panel of the invention can be remake according to different fracture faces to be measured, more targeted to tool
Body stratum carries out the research of true fracture support agent migration rule；
3rd, invention emulates in oilfield exploitation procedure, take sand fracturing fluid to be pumped into difference with a fixed displacement, certain sand ratio
Dynamic process in slit width crack, visual experimental apparatus fracture width can be adjusted, and stitch plate low manufacture cost, simulated experiment is more
Comprehensively.
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 of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation according to a kind of crack inner support agent of one embodiment of the invention migration visual experimental apparatus
Figure；
Fig. 2 is Fig. 1 line A-A schematic cross-sectional view；
Fig. 3 is Fig. 1 line B-B schematic cross-sectional view；
Fig. 4 is the rectangular slits plate support frame structure schematic diagram in Fig. 1 experimental provision；
Fig. 5 is Fig. 4 line C-C schematic cross-sectional view.
1- pit shaft analogue units；2- pit shaft analogue unit inner cylinders；3- caulking gums；4- results of fracture simulation units；The transparent seams of 5-
Plate fastening bolt；6- pressure sensors；7- stratum analogue unit；8- fracturing fluid access roades；9- extraction raffinate outlet passages；10-
Fracturing fluid exit passageway；11- valves；12- flange fastening bolts；13- pit shaft analogue unit top cover flanges；14- shaft drum forms are quasi-simple
First top cover；15- pit shaft analogue unit bottoms；16 pit shaft analogue unit bottom flanges；17- stratum analogue unit top cover flange；18-
Stratum analogue unit top cover；19- pit shaft analogue unit support columns；20- experimental provision bases；21- stratum analogue unit bottom；
22- stratum analogue unit bottom flange；23- stratum analogue unit support column.
Embodiment
To make technical scheme and advantage clearer, embodiment of the present invention is made below in conjunction with accompanying drawing into
One step it is described in detail.
One embodiment of the invention provides a kind of crack inner support agent migration rule visual experimental apparatus, such as Fig. 1-3 institutes
Show, including pit shaft analogue unit 1, results of fracture simulation unit 4 and stratum analogue unit 7.
Results of fracture simulation unit 4 includes two pieces of opposed transparent panels, and transparent panel is specially transparent resin seam in the present embodiment
Plate 401 and 402, can also be the transparent panel of other materials certainly.It is provided with and splits between two blocks of transparent resin seam plates 401 and 402
Seam, the real rock beam crack to be measured of the morphological Simulation in crack.Results of fracture simulation unit 401 is for example made by the following manner：With three-dimensional
Laser scanning rock beam crack to be measured, three-dimensional modeling is carried out using obtained scan data, 3D printing goes out fracture surface mould, poured
Plate 401 and 402 is stitched to two pieces of transparent resins for being sandwiched between crack, also can be by other means certainly the invention is not restricted to this
It is made.
Pit shaft analogue unit 1 is connected to one end (left side in Fig. 1) of results of fracture simulation unit 4, is provided with and is connected with crack
Fracturing fluid inlet passage 8, carry proppant in fracturing fluid；Stratum analogue unit 7 is connected to the another of results of fracture simulation unit 4
One end (right side in Fig. 1), it is provided with the fracturing fluid outlet passage 10 connected with crack.
As shown in figure 1, except stitching plate 401 and 402 including two transparent resins poured, results of fracture simulation unit 4 also includes
The support frame 403 and pad 404 being folded between transparent resin seam plate 401 and 402, plate is stitched by bolt 5 by transparent resin
401 and 402, support frame 403 and pad 404 be fixed, can just be adjusted by changing the thickness of pad 404 of different-thickness
The aperture of strobilization seam.
Support frame 403 is, for example, that lucite is made.One end of support frame 403 is fixed on pit shaft analogue unit 1
Right-hand member, the other end are fixed on the left end of stratum analogue unit 7, so that results of fracture simulation unit 4 is connected to the He of pit shaft analogue unit 1
Between stratum analogue unit 7.Such as support frame 403 is fixed on by the right-hand member of pit shaft analogue unit 1 and stratum by trip bolt
The left end of analogue unit 7.
Support frame 403 and pad 404 are for example hollow frame structure, such as referring to Fig. 4, are split with avoiding interference with
Seam, while can be formed to enclose around crack again and set structure, prevent fracturing fluid from abnormally flowing out.As shown in figure 5, carriage
Frame 403 may be provided with opening in one end of results of fracture simulation unit 4 and the other end, consequently facilitating crack is injected with fracturing fluid respectively
Mouth passage 8 connects with fracturing fluid outlet passage 10.
In Fig. 1, transparent resin seam plate 401 and 402 is slab construction, and centre is rectangle joint form.Referring to Fig. 3, support
The outline and hollow space of framework 403 and pad 404 are rectangle.The left and right sides of transparent resin seam plate can be respectively arranged with
Two pressure sensors 6, it is arranged on the crack and connects with fracturing fluid inlet passage connectivity part and with fracturing fluid outlet passage
Position corresponding to logical place, to record pressure condition.Transparent resin seam plate 401 and 402, rectangle intermediate washer 404 and rectangular slits plate
Sealing ring can be provided between framework 404, avoids fracturing fluid from abnormally flowing out.
Results of fracture simulation unit 4 can specifically make in the following way：It is three-dimensional sharp by being carried out to true rock beam fracture faces
Optical scanning, three-dimensional modeling is carried out using the data after scanning, and prints fracture surface mould with 3D printer and pour box material object,
One layer of vaseline is applied on fracture surface mould, recycles transparent resin to be poured, then divides transparent resin seam plate and mould, it is all
Intellectual circle avoids transparent resin seam plate from can not being taken out together with mould adhesion.Then transparent resin is stitched by plate, support by bolt
Framework and pad are fixed.
Pit shaft analogue unit 1 can be provided with a pit shaft analogue unit inner cylinder 2, and pit shaft analogue unit inner cylinder 2 passes through setting
Caulking gum 3 seals, and inner cylinder 2 and the right side of caulking gum 3 are used for interconnected fracture provided with rectangular aperture, inner cylinder 2 can rotate with
Control pit shaft interconnected fracture does not connect with crack, and specific is, for example, to rotate the rotation being connected above inner cylinder with inner cylinder by spanner
Button, and then adjust the rotation of inner cylinder.
The left side of pit shaft analogue unit 1 top is provided with fracturing fluid inlet passage 8, and the left side of pit shaft analogue unit 1 lower section is set
It is equipped with extraction raffinate outlet passage 9.Fracturing fluid inlet passage 8 is additionally provided with valve 11 to control whether the beginning of injection and knot
Beam.Extraction raffinate outlet passage 9 is closed in experimentation, and experiment finishes opening and is used to discharge extraction raffinate.Fracturing fluid inlet passage 8
Screw pump and flow container (not shown) are connected with, by screw pump and flow container toward being pumped into the pressure break for carrying proppant in crack
Liquid.The right side of stratum analogue unit 7 is provided with fracturing fluid outlet.
Pit shaft analogue unit 1 is that outer barrel is arranged inner tube structure, and stratum analogue unit 7 is hollow cylindrical configuration.Pit shaft is simulated
The bottom 15 of unit 1 and the bottom 21 of stratum analogue unit 7 are connected to experimental provision support column 19 and 23, the He of support column 19
23 are each attached on the base 20 of experimental provision.Experimental provision also includes video camera (not shown), video camera alignment crack
Analogue unit 4, to record experimental image, studied for playing back.As shown in figure 1, pit shaft analogue unit 1 also includes top cover flange 13
With top cover 14, stratum analogue unit 7 also includes top cover flange 17 and top cover 18, all fastened by flange fastening bolt 12.
The real rock beam crack to be measured of fracture pattern simulation of the present embodiment, it is contemplated that true fracture faces form fracture
The influence of middle proppant migration；The transparent resin seam plate of the present invention can be made again according to different fracture faces to be measured
Make, the more targeted research that true fracture support agent migration rule is carried out to specific stratum；Fracture width can be adjusted, seam
Plate low manufacture cost.
Another embodiment of the present invention additionally provides a kind of crack inner support agent migration visualized experiment method, and it includes following
Step：
(1) rock beam for treating simulated formation is chosen, rock beam fracture faces are scanned using three-dimensional laser scanner, is obtained
The three-dimensional data of rock beam fracture surface；
(2) rock beam fracture surface three-dimensional data is modeled using computer, printing rock beam by 3D printing technique splits
Seam face mould has and poured box, and two blocks of transparent resins seam plates are poured out with transparent resin；
(3) assembling includes the experimental provision of pit shaft analogue unit, results of fracture simulation unit and stratum analogue unit；Wherein may be used also
Different fracture apertures is simulated using the intermediate washer of different-thickness.
The fracturing fluid for carrying proppant is pumped into the pit shaft analogue unit, so that the fracturing fluid for carrying proppant passes through institute
After stating results of fracture simulation unit, flowed out from the fracturing fluid outlet of the stratum analogue unit；
Record laying and migration of the proppant in crack in real time by high-speed camera, and pass through pressure sensor
Record the pressure of results of fracture simulation unit arrival end and the port of export.
(4) sealing and cleannes of visual experimental apparatus are checked；
(5) configuration fracturing fluid is required according to experimental program, according to different sand than weighing proppant；
(6) fracturing fluid for carrying proppant is pumped into the pit shaft analogue unit, so that the fracturing fluid for carrying proppant leads to
After crossing the results of fracture simulation unit, flowed out from the fracturing fluid outlet of the stratum analogue unit, so as to according to corresponding infusion
Discharge capacity carries out the simulation of true crack inner support agent sedimentation migration.Wherein, according to the seam height and seam of fracturing fracture in site operation
Width, infusion discharge capacity, the injection discharge capacity tested according to the similar principle calculating simulation of flow velocity, the experiment of fracturing fluid are pumped into discharge capacity with showing
The conversion formula of field operational discharge capacity is as follows：
In formula：QeDischarge capacity, m are pumped into for experiment3/min；QfFor site operation discharge capacity, m3/min；hfIt is high for site operation crack
Degree, m；heFor the fracture height of results of fracture simulation unit, m；wfFor site operation fracture width, mm；weFor splitting for results of fracture simulation unit
Slit width degree, mm.Also experiment infusion discharge capacity can be directly obtained by conversion table, 1 is shown in Table specific corresponding to relation；
Laboratory experiment infusion discharge capacity conversion table under 1 different operational discharge capacities of table
(7) laying state and migration rule of the proppant in crack are recorded in real time by high-speed camera, and passes through pressure
Force snesor records the pressure of results of fracture simulation unit arrival end and the port of export.
The real rock beam crack to be measured of fracture pattern simulation of the present embodiment, it is contemplated that true fracture faces form fracture
The influence of middle proppant migration, is simulated in oilfield exploitation procedure, takes sand fracturing fluid and be pumped into not with a fixed displacement, certain sand ratio
With the dynamic process in slit width crack, visual experimental apparatus fracture width can be adjusted, and stitch plate low manufacture cost, simulated experiment
More comprehensively.
Fracturing fluid in the present invention includes slippery water fracturing fluid, crosslinked fracturing fluid, clean fracturing fluid etc., and proppant is included most
For major diameter less than the quartz sand or haydite of the fracture width of results of fracture simulation unit, carrying the fracturing fluid of proppant includes different sand ratios
Load fluid.
Described above combination preferred embodiment describes the visual experimental apparatus for simulating true crack inner support agent migration
And method, what those skilled in the art can will be apparent that knows, can be with the case of spirit and scope by the claims is not departed from
Various improvement and deformation are carried out on the basis of above-described embodiment.
Claims (10)
- The visual experimental apparatus 1. a kind of crack inner support agent is migrated, it is characterised in that including pit shaft analogue unit, results of fracture simulation Unit and stratum analogue unit,The results of fracture simulation unit includes two pieces of opposed transparent panels, and crack is provided between two pieces of transparent panels, described to split The real rock beam crack to be measured of the morphological Simulation of seam；The pit shaft analogue unit is connected to one end of the results of fracture simulation unit, is provided with the fracturing fluid connected with the crack Inlet passage, proppant is carried in the fracturing fluid；The stratum analogue unit is connected to the another of results of fracture simulation unit End, is provided with the fracturing fluid outlet passage connected with the crack.
- 2. experimental provision according to claim 1, it is characterised in that the results of fracture simulation unit is made by the following manner：With 3 D laser scanning rock beam crack to be measured；Three-dimensional modeling is carried out using obtained scan data；3D printing goes out fracture surface Mould；Pour to obtain two pieces of transparent panels in crack described in middle sandwiched.
- 3. experimental provision according to claim 1, it is characterised in that be additionally provided with carriage between two pieces of transparent panels Frame and pad, two pieces of transparent panels, support frame and the pad are fixed by bolt, by the pad for changing different-thickness Piece adjusts the width in the crack.
- 4. experimental provision according to claim 1, it is characterised in that the support frame and pad are hollow framework Structure, the support frame are provided with opening in one end of the results of fracture simulation unit and the other end.
- 5. experimental provision according to claim 1, it is characterised in that the fracturing fluid inlet passage is arranged on the well The upside of cylinder analogue unit, is provided with the extraction raffinate outlet passage connected with the crack on the downside of the pit shaft analogue unit.
- 6. experimental provision according to claim 1, it is characterised in that the fracturing fluid inlet passage is connected with screw pump And flow container, for by the screw pump and flow container toward being pumped into the fracturing fluid for carrying proppant in the crack.
- 7. experimental provision according to claim 1, it is characterised in that the results of fracture simulation unit is provided with pressure sensing Device, the pressure sensor are arranged on connectivity part and the crack and institute with the crack and the fracturing fluid inlet passage Position corresponding to the connectivity part of fracturing fluid outlet passage is stated, for recording pressure condition.
- 8. experimental provision according to claim 1, it is characterised in that also including video camera, for being directed at the crack mould Quasi-simple member is imaged.
- A kind of visualized experiment method 9. crack inner support agent is migrated, it is characterised in that including：The rock beam for treating simulated formation is chosen, rock beam fracture faces are scanned using three-dimensional laser scanner, rock beam is obtained and splits The three-dimensional data in seam face；Rock beam fracture surface three-dimensional data is modeled using computer, rock beam fracture surface mould is printed by 3D printing technique And box is poured, pour out two blocks of transparent resin seam plates with transparent resin；Assembling includes the experimental provision of pit shaft analogue unit, results of fracture simulation unit and stratum analogue unit；The fracturing fluid for carrying proppant is pumped into the pit shaft analogue unit, so that the fracturing fluid for carrying proppant is split by described After stitching analogue unit, flowed out from the fracturing fluid outlet of the stratum analogue unit；Record laying and migration of the proppant in crack in real time by high-speed camera, and recorded by pressure sensor The pressure of results of fracture simulation unit arrival end and the port of export.
- 10. experimental method according to claim 9, it is characterised in that the experiment of the fracturing fluid is pumped into discharge capacity according to existing Field operational discharge capacity determines that formula is as follows：<mrow> <msub> <mi>Q</mi> <mi>e</mi> </msub> <mo>=</mo> <mfrac> <msub> <mi>Q</mi> <mi>f</mi> </msub> <mrow> <mn>2</mn> <mo>&times;</mo> <msub> <mi>h</mi> <mi>f</mi> </msub> <mo>&times;</mo> <msub> <mi>w</mi> <mi>f</mi> </msub> </mrow> </mfrac> <mo>&times;</mo> <mrow> <mo>(</mo> <msub> <mi>h</mi> <mi>e</mi> </msub> <mo>&times;</mo> <msub> <mi>w</mi> <mi>e</mi> </msub> <mo>)</mo> </mrow> </mrow>In formula：QeDischarge capacity, m are pumped into for experiment3/min；QfFor site operation discharge capacity, m3/min；hfFor site operation fracture height, m；heFor the fracture height of results of fracture simulation unit, m；wfFor site operation crack fracture width, mm；weFor results of fracture simulation unit Fracture width, mm.
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| CN201610823150.1A CN107816342B (en) | 2016-09-14 | 2016-09-14 | Visualization experiment device and method for migration rule of proppant in crack |
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| CN109883925A (en) * | 2019-03-27 | 2019-06-14 | 武汉大学 | The coarse crack of change aperture and preparation method thereof for visualized experiment |
| CN110056337A (en) * | 2019-04-15 | 2019-07-26 | 中国石油天然气股份有限公司 | Crack inner support agent settles simulator |
| CN110469311A (en) * | 2019-08-28 | 2019-11-19 | 赣江新区澳博颗粒科技研究院有限公司 | The coarse fracture network visualization device of dynamic expansion under the conditions of a kind of simulation confining pressure |
| CN110805418A (en) * | 2019-10-09 | 2020-02-18 | 大港油田集团有限责任公司 | Large-displacement adjustable continuous self-supporting fracturing process research device |
| CN110806365A (en) * | 2019-10-09 | 2020-02-18 | 大港油田集团有限责任公司 | Dynamic fracture self-supporting fracturing process research device and friction resistance measurement method thereof |
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