CN109424350A - The system and method for proppant transported simulation in complex fracture - Google Patents
The system and method for proppant transported simulation in complex fracture Download PDFInfo
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- CN109424350A CN109424350A CN201710792716.3A CN201710792716A CN109424350A CN 109424350 A CN109424350 A CN 109424350A CN 201710792716 A CN201710792716 A CN 201710792716A CN 109424350 A CN109424350 A CN 109424350A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000004088 simulation Methods 0.000 title claims abstract description 30
- 239000012530 fluid Substances 0.000 claims abstract description 50
- 239000002245 particle Substances 0.000 claims abstract description 22
- 238000003384 imaging method Methods 0.000 claims abstract description 20
- 239000008187 granular material Substances 0.000 claims abstract description 19
- 238000005086 pumping Methods 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 230000000007 visual effect Effects 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 16
- 238000009530 blood pressure measurement Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000001739 density measurement Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000011160 research Methods 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000000523 sample Substances 0.000 description 5
- 230000005012 migration Effects 0.000 description 4
- 238000013508 migration Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000003079 shale oil Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000917 particle-image velocimetry Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/002—Survey of boreholes or wells by visual inspection
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of system and methods of proppant transported simulation in complex fracture, comprising: complex fracture network equipment, complex fracture network equipment are transparent visual structure, include trunk crack and branch fractures inside complex fracture network equipment；Measuring device, measuring device are installed on complex fracture network equipment；Pumping installations, pumping installations one end are connect with the mixing arrangement of fracturing fluid and proppant, and the other end is connect with complex fracture network equipment；High definition imaging observation device, high definition imaging observation device are set to the side in trunk crack.The present invention realizes the preparation of complex fracture network in the cores such as true shale by pouring technique, the fracture pattern formed after hydraulic fracturing in simulation actual formation, and the parameter of the distribution of the particle speed in load fluid flow process, fluid velocity distribution and granule density can be measured, certain Research foundation is provided for innovation load fluid flow simulating method, Optimum Hydraulic fracturing pump note technique.
Description
Technical field
The invention belongs to exploitation of oil-gas field technical fields, more particularly, to proppant migration mould in a kind of complex fracture
Quasi- system and method.
Background technique
In exploitation of oil-gas field technical field, shale oil gas is as a kind of very important unconventional energy resource, hydraulic fracturing
Technology is on a large scale applied in the exploitation of shale oil gas.Hydraulic fracturing is to inject fluid in a manner of high speed and high pressure
Into stratum, the fracture network of connection is formed in the earth formation.It, all can be by load fluid (i.e. proppant during hydraulic fracturing
With the solid-liquid two-phase mixture of fracturing fluid) it is injected into crack.After stopping injection, due to the reduction of hydraulic pressure and the work of crustal stress
With crack, which can be gradually reduced, to be even closed, and the proppant being distributed in crack at this time will play supporting crack to prevent from being closed
Effect, to increase the flow conductivity in crack.Migration distance and laying range of the proppant in crack are to measure waterpower
The important indicator of fracturing fracture flow conductivity.Proppant flow process in fracture network after the hydraulic fracturing of shale oil and gas reservoir
It is extremely complex, it is more by complicated crack geometric shape and network structure, proppant property, fluid properties and execution conditions etc.
The influence of kind parameter.
About flowing law of the load fluid in crack, forefathers have carried out a large amount of experimental study using narrow slit parallel-plate,
Many understanding is achieved to the basic migration mechanism of load fluid.But these imitative experimental appliances taken at present exist
The case where the case where certain limitation, some only considers single seam, some is small size double slit, and what is taken is all parallel-plate
The fracture network structure of the wall surface and actual formation that carry out simulation fracture differs greatly.The measuring device of experiment is only to whole simultaneously
The sanding form of body measures, and there is no record for the speed and concentration variation to proppant in migration process.Therefore, it is necessary to
A kind of system of proppant transported simulation in complex fracture is provided, provides theoretical foundation and guidance for site operation.
The information for being disclosed in background of invention part is merely intended to deepen the reason to general background technique of the invention
Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form
Technology.
Summary of the invention
The present invention realizes the preparation of complex fracture network in the cores such as true shale by pouring technique, simulates actual formation
The fracture pattern formed after middle hydraulic fracturing, special proppant is under conditions of having equal densities and diameter with actual support agent
Surface fluorescence material, and integrated Electrical Resistance Tomography, particle imaging velocity measuring technique and high definition imaging technique are set, thus
VELOCITY DISTRIBUTION, concentration distribution and pressure distribution during to entire proppant transport.
According to an aspect of the invention, it is proposed that in a kind of complex fracture proppant transported simulation system, the system packet
It includes:
Complex fracture network equipment, the complex fracture network equipment are transparent visual structure, the complex fracture network
It include trunk crack and branch fractures inside device；
Measuring device, the measuring device are installed on the complex fracture network equipment；
Pumping installations, described pumping installations one end are connect with the mixing arrangement of fracturing fluid and proppant, the other end with it is described
The connection of complex fracture network equipment；
High definition imaging observation device, the high definition imaging observation device are set to the side in the trunk crack.
Preferably, the complex fracture network equipment is manufactured by pouring the internal transparent sample containing prefabricated crack
's.
Preferably, the prefabricated crack includes the trunk crack and the branch fractures, the branch fractures with it is described
The angled intersection in trunk crack.
Preferably, the slit width in the trunk crack is 4-8mm；The slit width of the branch fractures is 1-3mm.
Preferably, the measuring device includes granule density measuring device, particle velocity measurement device and pressure measurement dress
It sets.
Preferably, the measurement granule density range of the granule density measuring device is 1%-30%.
Preferably, the measuring speed range of the particle velocity measurement device is 0.1-2m/s.
Preferably, the measurement pressure limit of the device for pressure measurement is 0-1Mpa.
According to another aspect of the invention, it is proposed that in a kind of complex fracture proppant transported simulation method, the side
Method may include:
Prepare complex fracture network equipment；
Measuring device is installed on the complex fracture network equipment, and places high definition imaging observation device in its side；
It prepares fracturing fluid and the pumping installations by being connected with the complex fracture network equipment is pumped into the complex fracture
In network；
Proppant is added in the fracturing fluid and is pumped into complex fracture network by the pumping installations, waterpower is carried out
Pressure break physical simulation experiment observes flowing law of the load fluid in crack and records related data.
Preferably, surface fluorescence material is arranged in the proppant.
The beneficial effects of the present invention are: the system of complex fracture network in the cores such as true shale is realized by pouring technique
It is standby, the fracture pattern formed after hydraulic fracturing in actual formation is simulated, and the speed of the particle in load fluid flow process can be measured
The parameter of degree distribution, fluid velocity distribution and granule density, the present invention are innovation load fluid flow simulating method, Optimum Hydraulic pressure
It splits pump note technique and certain Research foundation is provided.
Other features and advantages of the present invention will then part of the detailed description can be specified.
Detailed description of the invention
Exemplary embodiment of the invention is described in more detail in conjunction with the accompanying drawings, it is of the invention above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein in exemplary embodiment of the invention, identical reference label
Typically represent same parts.
Fig. 1 shows the schematic diagram of proppant transported simulation system in complex fracture according to the present invention.
Fig. 2 shows the flow charts in complex fracture according to the present invention the step of proppant transported simulation method.
Description of symbols
101, complex fracture network equipment；102, the mixing arrangement of fracturing fluid and proppant；103, granule density measurement dress
It sets；104, particle velocity measurement device；105, device for pressure measurement；106, observation device；107, pumping installations.
Specific embodiment
The preferred embodiment of the present invention is described in more detail below.Although the following describe preferred implementations of the invention
Mode, however, it is to be appreciated that may be realized in various forms the present invention without that should be limited by the embodiments set forth herein.Phase
Instead, these embodiments are provided so that the present invention is more thorough and complete, and can be by the scope of the present invention completely
It is communicated to those skilled in the art.
Embodiment 1
Fig. 1 shows the schematic diagram of proppant transported simulation system in complex fracture according to the present invention.
As shown in Figure 1, in this embodiment, the system of proppant transported simulation can be in complex fracture according to the present invention
Include:
Complex fracture network equipment 101, complex fracture network equipment 101 are transparent visual structure, complex fracture network dress
Setting 101 inside includes trunk crack and branch fractures；
Measuring device, measuring device are installed on complex fracture network equipment 101；
Pumping installations 107,107 one end of pumping installations are connect with the mixing arrangement 102 of fracturing fluid and proppant, the other end with
Complex fracture network equipment 101 connects；
High definition imaging observation device 106, high definition imaging observation device 106 are set to the side in trunk crack.
In one example, complex fracture network equipment 101 is by pouring the internal transparent sample for containing prefabricated crack
Manufacture.
In one example, prefabricated crack includes trunk crack and branch fractures, and branch fractures and trunk crack are angled
Intersection.
In one example, the slit width in trunk crack is 4-8mm；The slit width of branch fractures is 1-3mm.
Specifically, using the internal transparent sample for containing prefabricated crack of pouring technique production, prefabricated crack is by trunk crack
It is formed with branch fractures, the 4~8mm of slit width in trunk crack, 1~3mm of slit width of branch fractures.The front-end and back-end in trunk crack
It is connected respectively with load fluid inlet and outlet, branch fractures and the intersection in different angles of trunk crack.
In one example, measuring device includes granule density measuring device 103, particle velocity measurement device 104 and pressure
Force measuring device 105.
In one example, the measurement granule density range of granule density measuring device 103 is 1%-30%.
Specifically, granule density measuring device 103 uses Electrical Resistance Tomography, passes through non-contact measurement load fluid
The electric conductivity value of fluid section, inverting granule density value measure granule density range: 1%-30%.
In one example, the measuring speed range of particle velocity measurement device 104 is 0.1-2m/s.
Specifically, particle velocity measurement device 104 uses particle image velocimetry technology (PIV), passes through particle fluorescence signal
Collection and imaging, under the conditions of noiseless measure 101 different location of complex fracture network equipment at distribution of particles and speed,
Measuring speed range: 0.1-2m/s.
In one example, the measurement pressure limit of device for pressure measurement 105 is 0-1Mpa.
Specifically, dial markings are set on 101 surface of complex fracture network equipment, arrange pressure in the different location of pipeline
Sensor, the contact by sensor probe with fluid directly measure the pressure distribution in entire flow field, measure pressure limit: 0-
1MPa。
High definition imaging observation device 106 is set to the side in trunk crack.Using high-speed camera instrument, load fluid flowing is recorded
Whole process, can observe the movement fluidised form of load fluid with the Horizontal Movement of dynamically recording proppant and sedimentation, be further
Data analysis provides foundation.
The present embodiment realizes the preparation of complex fracture network in the cores such as true shale by pouring technique, and simulation is practically
The fracture pattern formed after hydraulic fracturing in layer, and the distribution of the particle speed in load fluid flow process, fluid speed can be measured
The parameter of degree distribution and granule density, the present invention mention for innovation load fluid flow simulating method, Optimum Hydraulic fracturing pump note technique
For certain Research foundation.
Using example
A concrete application example is given below in the scheme and its effect of the embodiment of the present invention for ease of understanding.This field
It should be understood to the one skilled in the art that the example is only for the purposes of understanding the present invention, any detail is not intended to be limited in any way
The system present invention.
Firstly, preparing complex fracture network equipment 101, produced using pouring technique internal transparent containing prefabricated crack
Sample, specimen size are 300 × 300 × 300mm.Prefabricated crack is made of a trunk crack and a plurality of branch fractures, width
Respectively 4~8mm and 1~3mm, length are respectively 300mm and 10~100mm, and height is respectively 100mm and 10~50mm；
Secondly, installing granule density measuring device 103, particle velocity measurement device on complex fracture network equipment 101
104 and device for pressure measurement 105, high definition imaging observation device 106 is placed in the side in trunk crack, and by complex fracture net
Network device 101 is connected with pumping installations 107；
Then, the mixing arrangement 102 of a fracturing fluid and proppant is connected with before pumping installations 107, in fracturing fluid and support
With the fracturing fluid of certain viscosity required for preparing in the mixing arrangement 102 of agent, it is pumped into fracturing fluid into whole device system,
So that fracturing fluid is reached recurrent state in whole system, is temporarily added without proppant；
Finally, in the mixing arrangement 102 of fracturing fluid and proppant, according to required sand ratio, by a certain amount of support
Agent is added in fracturing fluid, is stirred evenly, and load fluid is made and is injected in complex fracture network by pumping installations.It supports herein
Agent is special, setting surface fluorescence material under conditions of having equal densities and diameter with actual support agent, and integrated electric
Chromatography imaging technique, particle imaging velocity measuring technique and high definition imaging technique are hindered, thus during obtaining entire proppant transport
VELOCITY DISTRIBUTION, concentration distribution and pressure distribution.
After experiment starts, record flow field middle particle concentration, particle speed and pressure change with time, while using high
The Horizontal Movement of fast video camera dynamically recording proppant and sedimentation, observe the movement of load fluid.After experiment, crack bottom is recorded
The whaleback height in portion.
This application example realizes that the preparation of complex fracture network in the cores such as true shale, simulation are practical by pouring technique
The fracture pattern formed after hydraulic fracturing in stratum, and the distribution of the particle speed in load fluid flow process, fluid can be measured
The parameter of VELOCITY DISTRIBUTION and granule density provides one for innovation load fluid flow simulating method, Optimum Hydraulic fracturing pump note technique
Fixed Research foundation.
It will be understood by those skilled in the art that above to the purpose of the description of the embodiment of the present invention only for illustratively saying
The beneficial effect of bright the embodiment of the present invention is not intended to limit embodiments of the invention to given any example.
Embodiment 2
Fig. 2 shows the flow charts in complex fracture according to the present invention the step of proppant transported simulation method.
As shown in Fig. 2, according to an embodiment of the invention, providing a kind of side of proppant transported simulation in complex fracture
Method, this method comprises: step 201, prepares complex fracture network equipment；Step 202, it installs and surveys on complex fracture network equipment
Device is measured, and places high definition imaging observation device in its side；Step 203, prepare fracturing fluid and by with complex fracture network
The connected pumping installations of device is pumped into complex fracture network；Step 204, proppant is added in fracturing fluid and is filled by pumping
It sets and is pumped into complex fracture network, carry out hydraulic fracturing physical simulation experiment, observe flowing law of the load fluid in crack simultaneously
Record related data.
In one example, surface fluorescence material is arranged in proppant.
Specifically, proppant plays the role of supporting crack to prevent closure, to increase the flow conductivity in crack, tests
Proppant used is special, setting surface fluorescence material under conditions of having equal densities and diameter with actual support agent
Material, by the collection and imaging of particle fluorescence signal, can measure distribution of particles and speed.
The present embodiment realizes the preparation of complex fracture network in the cores such as true shale by pouring technique, and simulation is practically
The fracture pattern formed after hydraulic fracturing in layer, and the distribution of the particle speed in load fluid flow process, fluid speed can be measured
The parameter of degree distribution and granule density, the present invention mention for innovation load fluid flow simulating method, Optimum Hydraulic fracturing pump note technique
For certain Research foundation.
It will be understood by those skilled in the art that above to the purpose of the description of the embodiment of the present invention only for illustratively saying
The beneficial effect of bright the embodiment of the present invention is not intended to limit embodiments of the invention to given any example.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.
Claims (10)
1. the system of proppant transported simulation in a kind of complex fracture, which is characterized in that the system includes:
Complex fracture network equipment, the complex fracture network equipment are transparent visual structure, the complex fracture network equipment
Inside includes trunk crack and branch fractures；
Measuring device, the measuring device are installed on the complex fracture network equipment；
Pumping installations, described pumping installations one end are connect with the mixing arrangement of fracturing fluid and proppant, the other end and the complexity
The connection of fracture network device；
High definition imaging observation device, the high definition imaging observation device are set to the side in the trunk crack.
2. the system of proppant transported simulation in complex fracture according to claim 1, wherein the complex fracture network
Device is manufactured by pouring the internal transparent sample containing prefabricated crack.
3. the system of proppant transported simulation in complex fracture according to claim 2, wherein the prefabricated crack includes
The trunk crack and the branch fractures, the branch fractures and the angled intersection in trunk crack.
4. the system of proppant transported simulation in complex fracture according to claim 1, wherein the seam in the trunk crack
Width is 4-8mm；The slit width of the branch fractures is 1-3mm.
5. the system of proppant transported simulation in complex fracture according to claim 1, wherein the measuring device includes
Granule density measuring device, particle velocity measurement device and device for pressure measurement.
6. the system of proppant transported simulation in complex fracture according to claim 5, wherein the granule density measurement
The measurement granule density range of device is 1%-30%.
7. the system of proppant transported simulation in complex fracture according to claim 5, wherein the particle velocity measurement
The measuring speed range of device is 0.1-2m/s.
8. the system of proppant transported simulation in complex fracture according to claim 5, wherein the device for pressure measurement
Measurement pressure limit be 0-1Mpa.
9. a kind of method of proppant transported simulation in complex fracture, which is characterized in that described method includes following steps:
Prepare complex fracture network equipment；
Measuring device is installed on the complex fracture network equipment, and places high definition imaging observation device in its side；
It prepares fracturing fluid and the pumping installations by being connected with the complex fracture network equipment is pumped into the complex fracture network
In；
Proppant is added in the fracturing fluid and is pumped into complex fracture network by the pumping installations, hydraulic fracturing is carried out
Physical simulation experiment observes flowing law of the load fluid in crack and records related data.
10. the method for proppant transported simulation in complex fracture according to claim 9, wherein the proppant setting
Surface fluorescence material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710792716.3A CN109424350A (en) | 2017-09-05 | 2017-09-05 | The system and method for proppant transported simulation in complex fracture |
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| CN201710792716.3A CN109424350A (en) | 2017-09-05 | 2017-09-05 | The system and method for proppant transported simulation in complex fracture |
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| CN111502626A (en) * | 2020-05-18 | 2020-08-07 | 常州市易用科技有限公司 | High-pressure liquid quantitative sand carrying device |
| CN111594129A (en) * | 2020-05-22 | 2020-08-28 | 西安石油大学 | Visual device for simulating migration rule of proppant in complex seam net |
| CN111948097A (en) * | 2019-05-16 | 2020-11-17 | 中国石油化工股份有限公司 | Testing equipment and method for slurry diffusion rheological property in rough fracture |
| CN113027409A (en) * | 2019-12-23 | 2021-06-25 | 中国石油天然气股份有限公司 | Experimental device for simulating proppant migration in horizontal well fracture network |
| CN113041933A (en) * | 2021-03-09 | 2021-06-29 | 西南石油大学 | Device and method for keeping particle concentration stable in proppant velocity measurement experiment |
| CN113868981A (en) * | 2021-10-20 | 2021-12-31 | 重庆地质矿产研究院 | Supercritical CO2Simulation evaluation method for migration of sand-carrying liquid in complex slotted net |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948097A (en) * | 2019-05-16 | 2020-11-17 | 中国石油化工股份有限公司 | Testing equipment and method for slurry diffusion rheological property in rough fracture |
| CN113027409A (en) * | 2019-12-23 | 2021-06-25 | 中国石油天然气股份有限公司 | Experimental device for simulating proppant migration in horizontal well fracture network |
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| CN113914851B (en) * | 2020-07-08 | 2024-02-02 | 中国石油化工股份有限公司 | Experimental method for simulating seepage and suction of fracturing fluid in complex fracture system |
| CN114059982A (en) * | 2020-07-31 | 2022-02-18 | 中国石油天然气股份有限公司 | Seam net fracturing test device |
| CN114059982B (en) * | 2020-07-31 | 2024-03-26 | 中国石油天然气股份有限公司 | Fracture net fracturing test device |
| CN113041933A (en) * | 2021-03-09 | 2021-06-29 | 西南石油大学 | Device and method for keeping particle concentration stable in proppant velocity measurement experiment |
| CN113868981A (en) * | 2021-10-20 | 2021-12-31 | 重庆地质矿产研究院 | Supercritical CO2Simulation evaluation method for migration of sand-carrying liquid in complex slotted net |
| CN113868981B (en) * | 2021-10-20 | 2024-04-30 | 重庆地质矿产研究院 | Supercritical CO2Simulation evaluation method for migration of sand-carrying fluid in complex joint network |
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Application publication date: 20190305 |