CN108195738A - A kind of three-dimensional fracture permeability apparatus of the wide adjustable interior visible of gap - Google Patents

A kind of three-dimensional fracture permeability apparatus of the wide adjustable interior visible of gap Download PDF

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Publication number
CN108195738A
CN108195738A CN201711403209.2A CN201711403209A CN108195738A CN 108195738 A CN108195738 A CN 108195738A CN 201711403209 A CN201711403209 A CN 201711403209A CN 108195738 A CN108195738 A CN 108195738A
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permeameter
pressure
paper
steel plate
crack
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CN108195738B (en
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左建平
姜广辉
刘畅
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/082Investigating permeability by forcing a fluid through a sample
    • G01N15/0826Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The present invention provides a kind of three-dimensional fracture permeability apparatus of the wide adjustable interior visible of gap, is made of permeameter, gas-liquid supply control system and data acquisition and analysis system three parts.Permeameter is mainly made of upper cover steel plate, silica gel plate, armorplate glass, the glassine paper for adhering to the coarse fissure-plane of 3D printing and this five part of lower wall steel plate.A conduit pipe is formd among two pieces of armorplate glasses of glassivation paper, aperture is adjusted using clearance gauge, and high-strength bolt connection sealing is used between five parts of permeameter.Gas-liquid supply portion provides pressure using electric pressure test pump and high-pressure air pipe, and control section uses valve regulated Fluid pressure, and seepage flow pipeline is connected using oxygen hose, and often place's connection has compound gasket sealing.Data collection and analysis part includes pressure sensor, flowmeter and recording instrument without paper, is transferred data in recording instrument without paper by pressure sensor, flowmeter, and completes the collection analysis of data in a computer.

Description

A kind of three-dimensional fracture permeability apparatus of the wide adjustable interior visible of gap
Technical field
The present invention relates to a kind of fields of the three-dimensional fracture permeability apparatus of the wide adjustable interior visible of gap.
Background technology
Existing two and three dimensions fracture seepage device all has some disadvantages and limitation, is mainly manifested in:When Two-dimentional fracture seepage device can only the straight fissure-plane smooth, frictional force is small of template surface, but fissure-plane in practical engineering application All it is coarse, it is impossible to two-dimentional smooth flat is properly termed as, so two-dimentional fracture seepage device cannot really mould fluid exist Flow behavior on fissure-plane;Second is that the slab construction of three-dimensional fracture seepage apparatus is mostly used the coarse crack of slabstone real simulation Face, this material can not realize visualization, inconvenient, and cost is high;Third, for common two dimension or three-dimensional fracture device, For fluid by being directly entered after inlet in infiltration crack, this design method can lead to during the experiment that fluid cannot be equal It is even to be completely paved with entire crack, cause stress data test inaccuracy, it is impossible to accurately measure permeability;Fourth, for common Two dimension or three-dimensional fracture seepage apparatus, satisfactory test sample are difficult to and produce, and the aperture in sample crack is difficult to control System.In view of the above-mentioned problems, the present invention provides a kind of three-dimensional fracture permeability apparatus of the wide adjustable interior visible of gap.
Invention content
The present invention provides the three-dimensional fracture permeability apparatus of a set of wide adjustable interior visible of gap, is supplied by permeameter, gas-liquid Control system and data acquisition and analysis system three parts composition.Wherein crack permeameter is the master of the three-dimensional fracture seepage apparatus Body portion, entire permeameter is mainly by carrying the upper cover steel plate, the silica gel plate for sealing, smooth tempering glass of 26 bolts hole Glass plate, the glassine paper for adhering to the coarse fissure-plane of 3D printing and this five part of lower wall steel plate composition.It is coarse to against attachment 3D printing A conduit pipe is formd among two pieces of armorplate glasses of the glassine paper of fissure-plane, aperture can be utilized according to requirement of experiment The clearance gauge of different-thickness is adjusted.In " U-shaped " silica gel pad, two rectangle clearance gauge slots are reserved in upper and lower both sides respectively.It oozes High-strength bolt connection sealing is used between five parts of saturating instrument.Gas-liquid supply portion uses hand held, electric hydraulic test pump and high pressure gas Bottle provides the Fluid pressure in seepage channel, and control section tests the pressure of fluid using valve, overflow valve and decompression valve regulation. Seepage flow pipeline uses internal diameter to be connected for the oxygen hose of 10mm by tube bank, connector with valve, and each junction is placed with combination Gasket plays sealing function.Data acquisition control part include pressure sensor, turbine flowmeter, gas mass flow gauge, MIK -4000D types recording instrument without paper and computer.It will be pressed by pressure sensor, turbine flowmeter and gas mass flow gauge Power and data on flows are transmitted in recording instrument without paper.Recording instrument without paper is connect with computer, in a computer complete pressure and The acquisition and analysis of data on flows.
Further, the true rock surface of laser scanning is printed to transparent glassine paper by the present invention by 3D printing technique On, then glassine paper pasted up and down on two pieces of armorplate glasses, it realizes from two-dimentional smooth flat to three-dimensional coarse fissure-plane Conversion, the application of this technology make simulation fissure-plane truer than the fissure-plane of ordinary two dimensional slit device, are filled than three-dimensional fracture The fissure-plane materials put are less, cost is lower, more convenient operation, and can print different three according to different requirement of experiment Tie up coarse fissure-plane.
Further, the crack of this permeameter, which makes, has certain flexibility, by being embedded to different-thickness in clearance gauge slot Clearance gauge can realize the adjusting of fracture opening, it is easy to operation.
Particularly, the top surface of this permeameter lower wall steel plate is docked using steel plate and tempered glass, and seam crossing is glued using AB glue Knot sealing, operating method:AB glue is fully applied to spill-over in seam crossing, after AB glue is done, is polishing to glue-line using sand paper Flat smooth.In addition, the inlet of this permeameter is not arranged in end, and it is provided in the steel plate docked with tempered glass On, fitted seal silica gel plate substantially increases the leakproofness of permeameter.One is set between inlet and pressure sensor interface Buffer groove, enables fluid to uniformly enter in crack.Crack using pressure sensor pressure tap as starting point, pressure sensor Pressure tap is arranged on the steel plate docked with tempered glass, and the pressure loss that fluid enters during crack can be avoided to survey pressure The influence of accuracy of measurement, obtained pressure data are more accurate.
Further, the beneficial effects of the invention are as follows:The smooth fissure-plane of two dimension is improved to three-dimensional by 3D printing technique to split Gap can go out flow behavior of the fluid in coarse crack with real simulation;The fracture opening of permeameter has certain can adjust Range controls fracture opening according to different requirement of experiment using the clearance gauge of different-thickness;Pass through three tempering glass of upper cover plate Glass observation window can clearly observe flow behavior of the fluid in crack in real time;By being set between inlet and crack Buffer groove by pressure data acquire it is more accurate;By the design of water inlet position and silica gel plate shape, permeameter is improved Leakproofness;By the arrangement of the side pressure point of pressure sensor, influence of the fluid flow pressure loss to measurement accuracy is avoided. In addition, this crack permeability apparatus can both simulate flow behavior of the water, oil, gas three-phase in permeameter respectively, it can also be arbitrary Two-phase three is combined, and simulates a series of relevant Seepage Experiment such as the flow behavior in permeameter, test permeability, also Anti- row's flow behavior of fracturing fluid can be simulated in permeameter.The present apparatus is powerful, is widely used, and test result is accurate.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is a kind of schematic diagram of the three-dimensional fracture permeability apparatus of the wide adjustable interior visible of gap, permeameter 1, observation window 11, inlet 12, liquid outlet 13, upper cover steel plate 14, gas-liquid supply control system 2, gate valve 21, overflow valve 22, pressure reducing valve 23, water Pump 24, oil pump 25, gas tank 26, oxygen hose 27, data acquisition and analysis system 3, pressure sensor 31, flowmeter 32, no paper note Record instrument 33, computer 34.
Fig. 2 is upper cover steel plate three-view diagram, observation window 11, High-strength bolt hole 15, upper cover steel plate 14.
Fig. 3 is the three-view diagram of lower wall steel plate, lower wall steel plate 16, buffer groove 17, observation window 11, High-strength bolt hole 15, into Liquid mouth 12, liquid outlet 13, silica gel pad 10, clearance gauge slot 18, pressure sensor pressure tap 19.
Fig. 4 is the two isogonism shaft side figure up and down of permeameter.
Specific embodiment
With reference to the accompanying drawings, the present invention provides the three-dimensional fracture permeability apparatus of a set of wide adjustable interior visible of gap, by permeameter 1st, gas-liquid supply control system 2 and 3 three parts of data acquisition and analysis system composition.Wherein crack permeameter 1 is that the three-dimensional is split The main part of gap seepage apparatus, entire permeameter is mainly by carrying the upper cover steel plate 14 of 26 High-strength bolt holes 15, for close The silica gel plate 10 of envelope, upper and lower two pieces of smooth armorplate glasses, the attachment glassine paper of the coarse fissure-plane of 3D printing and lower wall steel This five part of plate 16 forms.It againsts and forms one among two pieces of armorplate glasses of the glassine paper of the attachment coarse fissure-plane of 3D printing A conduit pipe, aperture can be adjusted according to requirement of experiment using the clearance gauge of different-thickness.In " U-shaped " silica gel pad 10 In, two rectangle clearance gauge slots 18 are reserved in upper and lower both sides respectively.It is connected between five parts of permeameter 1 using high-strength bolt close Envelope.Gas-liquid supply portion provides the Fluid pressure in seepage channel using water pump 24, oil pump 25 and gas tank 26, and control section uses Overflow valve 22 and pressure reducing valve 23 adjust the pressure of test fluid.Seepage flow pipeline uses internal diameter to pass through pipe for the oxygen hose 27 of 10mm Subpackage contains pressure sensor 31, flowmeter 32, MIK -4000D types recording instrument without paper 33 and computer 34.Pass through pressure sensor 31st, pressure and data on flows are transmitted in recording instrument without paper 33 by flowmeter 32.Recording instrument without paper 33 is connect with computer 34, The acquisition and analysis of pressure and data on flows are completed in computer 34.
With reference to the accompanying drawings, the assembling of this covering device:The thickness of one piece " U-shaped " is made to be thicker than clearance gauge thickness 0.2mm as standard Silica gel pad 10 will surround sealing one side opening in three faces between two pieces of tempered glass wait broad slits, and in the silicon of upper and lower both sides The clearance gauge regulation and control fracture opening that two rectangles are used to place different-thickness as clearance gauge slot 18 is reserved in glue gasket 10 respectively.It will be attached The glassine paper for the coarse fissure-plane of 3D printing is pasted onto armorplate glass inner surface up and down, and upper armorplate glass is put into permeameter In 1 slot, silica gel pad 10 and clearance gauge are pushed down.A water guide is formd among upper and lower armorplate glass and silica gel pad 10 to lead to Road, the three-dimensional fracture as made.On top, capping upper cover steel plate 14, high-strength with 26 with lower wall steel plate 16 by upper cover steel plate 14 It spends bolt and carries out closed reinforcing.Permeameter 1 is connected, and install pressure sensor by pipeline with gas-liquid supply control system 2 31.Loine pressure is provided by water pump 24, oil pump 25 and gas tank 26, and fluid flow is measured by flowmeter 32 in pipeline, permeable pressure head It is measured by pressure sensor 31.
With reference to the accompanying drawings, the use process of this covering device, fracturing fluid is counter to arrange flow behavior to simulate, and Fluid pressure is carried by water pump For for (oil pump, air pump are similarly):Before experiment, fracturing fluid and proppant particles are injected into conduit pipe.After experiment starts, Fluid is pumped out from water pump 24, adjusts Fluid pressure according to requirement of experiment through overflow valve 22, the flow flowed through is recorded through flowmeter 32, In data on flows synchronized upload to recording instrument without paper 33, inlet 12 is flowed into through gate valve 21, flow flows to buffer groove 17, then Tiling to entire three-dimensional fracture face, initial pressure is recorded simultaneously immediately by the pressure sensor that pressure sensor pressure tap 19 connects In synchronized upload to recording instrument without paper 33, gap is wide to be controlled according to different requirement of experiment using the clearance gauge of different model.Flow carries The anti-flow process arranged of fracturing fluid is simulated by crack for hydraulic pressure, drainpipe is flowed by liquid outlet 13.The present apparatus is in each pipe Road interface has O-ring and compound gasket, substantially increases the leakproofness of device.The present apparatus is convenient for disassembly and assembly, can repeat to make With, it is powerful, it is widely used, test result is accurate, can also carry out functions expanding and secondary development, and video of arranging in pairs or groups is micro- System can realize the real-time microcosmic monitoring of crack fluid flow inside.

Claims (5)

1. the present invention provides the three-dimensional fracture permeability apparatus of a set of wide adjustable interior visible of gap, by permeameter 1, gas-liquid supply control System 2 processed and 3 three parts of data acquisition and analysis system composition.Wherein crack permeameter 1 is the three-dimensional fracture seepage apparatus Main part, entire permeameter mainly by carry 26 High-strength bolt holes 15 upper cover steel plate 14, for sealing silica gel plate 10, Upper and lower two pieces of smooth armorplate glasses adhere to the glassine paper of the coarse fissure-plane of 3D printing and lower wall steel plate 16 this five parts group Into.It againsts and forms a conduit pipe among two pieces of armorplate glasses of the glassine paper of the attachment coarse fissure-plane of 3D printing, open Degree can be adjusted according to requirement of experiment using the clearance gauge of different-thickness.In " U-shaped " silica gel pad 10, upper and lower both sides point It Yu Liu not two rectangle clearance gauge slots 18.High-strength bolt connection sealing is used between five parts of permeameter 1.Gas-liquid supply portion is adopted The Fluid pressure in seepage channel is provided with water pump 24, oil pump 25 and gas tank 26, control section uses overflow valve 22 and pressure reducing valve 23 adjust the pressure of test fluid.Seepage flow pipeline uses internal diameter to contain pressure sensor by pipe subpackage for the oxygen hose 27 of 10mm 31st, flowmeter 32, MIK -4000D types recording instrument without paper 33 and computer 34.It will be pressed by pressure sensor 31, flowmeter 32 Power and data on flows are transmitted in recording instrument without paper 33.Recording instrument without paper 33 is connect with computer 34, it is complete in computer 34 Into the acquisition and analysis of pressure and data on flows.
2. a kind of three-dimensional fracture permeability apparatus of the wide adjustable interior visible of gap according to claim 1, it is characterised in that: This permeameter 1 on the glassine paper for pasting upper and lower two pieces of armorplate glasses by using 3D printing technique, by laser scanning Rock fracture face is printed to using makrolon material on glassine paper, is realized and is turned from two-dimentional smooth flat to three-dimensional fracture face Change, the application of this technology makes simulation fissure-plane more be connect with crack in practical rock than the fissure-plane of ordinary two dimensional slit device Closely, rock fracture system materials more entire than 3D printing are less, cost is lower, more convenient operation, and can be according to different realities It tests requirement and prints different three-dimensional fracture faces.
3. a kind of three-dimensional fracture permeability apparatus of the wide adjustable interior visible of gap according to claim 1, it is characterised in that: The crack of this permeameter 1, which makes, has certain flexibility, can be realized by the clearance gauge that different-thickness is embedded in clearance gauge slot 18 The adjusting of fracture opening, it is easy to operation.
4. a kind of three-dimensional fracture permeability apparatus of the wide adjustable interior visible of gap according to claim 1, it is characterised in that: The top surface of this permeameter lower wall steel plate 16 is docked using steel plate and tempered glass, and seam crossing is bonded and sealed using AB glue, operation side Method:AB glue is fully applied to spill-over in seam crossing, after glass cement is done, glue-line is polishing to flat smooth using sand paper.Separately Outside, the inlet 12 of this permeameter is not arranged in end, and is provided on the steel plate docked with tempered glass, fitted seal Silica gel plate substantially increases the leakproofness of permeameter 1.One is set between inlet 12 and pressure sensor pressure tap 19 to delay Groove 17 is rushed, fluid is enable to uniformly enter in crack.Crack is starting point with pressure sensor pressure tap 19, pressure sensor 31 Pressure tap 19 be arranged on the steel plate docked with tempered glass, fluid can be avoided to enter the pressure loss during crack to pressure The influence of power measurement accuracy, obtained pressure data are more accurate.
5. content more than is intended in the patent within protection domain.
CN201711403209.2A 2017-12-22 2017-12-22 Internally visible three-dimensional crack penetration device with adjustable gap width Active CN108195738B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110879287A (en) * 2019-12-17 2020-03-13 天津大学 Hull-Shore sheet testing apparatus with adjustable plate spacing
CN111504872A (en) * 2020-04-16 2020-08-07 武汉大学 Variable-opening detachable simulated crack test device and test method
CN111638169A (en) * 2020-06-10 2020-09-08 中国石油大学(华东) Rock three-dimensional fracture network seepage distribution testing system and method
CN111811995A (en) * 2020-07-17 2020-10-23 中国地质大学(北京) Visual test method and system for simulating coarse single-cross fracture multiphase seepage
CN113340785A (en) * 2021-06-03 2021-09-03 鲁东大学 Multifunctional visual cylindrical surface crack penetration device and use method thereof
CN113533157A (en) * 2021-07-02 2021-10-22 浙江大学 Variable-opening detachable fracture device for visual experiment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102809528A (en) * 2012-08-03 2012-12-05 中国石油天然气股份有限公司 Three-phase Relative Permeability Test System Based on CT Scanning
CN103940719A (en) * 2014-04-15 2014-07-23 西安科技大学 Coal body permeability characteristic testing system and method
CN107167409A (en) * 2017-05-27 2017-09-15 四川大学 3D printing point shape Single Fracture seepage flow experiment system and experimental method under Multiple experiments operating mode coupling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102809528A (en) * 2012-08-03 2012-12-05 中国石油天然气股份有限公司 Three-phase Relative Permeability Test System Based on CT Scanning
CN103940719A (en) * 2014-04-15 2014-07-23 西安科技大学 Coal body permeability characteristic testing system and method
CN107167409A (en) * 2017-05-27 2017-09-15 四川大学 3D printing point shape Single Fracture seepage flow experiment system and experimental method under Multiple experiments operating mode coupling

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110879287A (en) * 2019-12-17 2020-03-13 天津大学 Hull-Shore sheet testing apparatus with adjustable plate spacing
CN111504872A (en) * 2020-04-16 2020-08-07 武汉大学 Variable-opening detachable simulated crack test device and test method
CN111638169A (en) * 2020-06-10 2020-09-08 中国石油大学(华东) Rock three-dimensional fracture network seepage distribution testing system and method
CN111811995A (en) * 2020-07-17 2020-10-23 中国地质大学(北京) Visual test method and system for simulating coarse single-cross fracture multiphase seepage
CN111811995B (en) * 2020-07-17 2022-04-15 中国地质大学(北京) Visual test method and system for simulating coarse single-cross fracture multiphase seepage
CN113340785A (en) * 2021-06-03 2021-09-03 鲁东大学 Multifunctional visual cylindrical surface crack penetration device and use method thereof
CN113533157A (en) * 2021-07-02 2021-10-22 浙江大学 Variable-opening detachable fracture device for visual experiment

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