CN107218035A - A kind of experimental provision of automatic change crack wall mill resistance and method of work and application - Google Patents
A kind of experimental provision of automatic change crack wall mill resistance and method of work and application Download PDFInfo
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- CN107218035A CN107218035A CN201710444374.6A CN201710444374A CN107218035A CN 107218035 A CN107218035 A CN 107218035A CN 201710444374 A CN201710444374 A CN 201710444374A CN 107218035 A CN107218035 A CN 107218035A
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- 238000000034 method Methods 0.000 title claims description 20
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- 238000004088 simulation Methods 0.000 claims abstract description 56
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000012612 static experiment Methods 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 14
- 239000004568 cement Substances 0.000 claims description 10
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- 230000015572 biosynthetic process Effects 0.000 claims description 4
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- 238000002347 injection Methods 0.000 claims description 3
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- 238000001727 in vivo Methods 0.000 claims 1
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- 238000013461 design Methods 0.000 description 3
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
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- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
A kind of experimental provision of automatic change crack wall mill resistance, including：Main box：Being set in outside rotating cylinder, and at least include one side inside main box is used for the static experiment face of simulation fracture；Rotating cylinder：Including multiple dynamic experiment faces for being used to simulate different mill resistances, the rotating cylinder is axially disposed within main box by rotating shaft to be rotated；When the dynamic experiment face is with the opposing parallel setting in the static experiment face, simulation fracture is formed between the two, and the axial boundary sealing of the simulation fracture is set.In the present invention, when making simulation fracture, fixed rotating cylinder is sealed using sealing strip in the axial boundary to simulation fracture, both sides above and below simulation fracture is kept sealing state, it is ensured that carried out water-tight during mill resistance experiment.
Description
Technical field
The present invention relates to a kind of experimental provision of automatic change crack wall mill resistance and method of work and application, belong to stone
The technical field of hydraulic fracturing oily, in gas exploitation course.
Background technology
Hydraulic fracturing is the important technical of well production increment transformation, either conventional hyposmosis, extra-low permeability oil
Gas reservoir, or untraditional reservoir shale, tight sandstone reservoir, hydraulic fracturing all play key production-increasing function, especially
Unconventional reservoir, does not use fracturing technique, and the oil gas of underground is difficult to mined.Hydraulic fracturing is exactly to utilize high pressure pump group, will
Fracturing fluid is pumped into stratum, and forming one or more in the earth formation has the crack of certain physical dimension, and fracture length is typically from several
It is ten meters to hundreds of meters, highly high from several meters to tens meters, the several mm wides of width.Then by the load fluid (pressure with proppant
Split the mixture of liquid and proppant) it is injected into crack.After pressure break terminates, fracturing liquid rubber-breaking, which is returned, is discharged to ground, and proppant is being stayed in
In crack, play a part of supporting crack, the hole for keeping crack to be between open configuration, proppant particles is hydrocarbon stratum
Water provides circulation passage, so as to play the effect of fracturing yield increasing.
Crack mill resistance is objective reality in pressure break, and mill resistance of the fracturing fluid in crack is produced to pressure break in fracturing process
Large effect, can change the physical dimension, shape and flow conductivity in crack.Crack wall is rough rock wall,
So that fracturing fluid is during hydraulic energy is transmitted, because the resistance of hydraulically rough surface causes energy loss, for making having for seam
Pressure reduction is imitated, it is necessary to pressing crack construction needs could be met by improving discharge capacity, the burden of working barrel is added.Coarse sides of fracture
Face, has Strong shear effect for fracturing fluid, causes fracturing fluid to occur viscosity decline during sand is taken, and proppant was settled
It hurry up, it is difficult to form favourable laying concentration in the horizontal direction, be also unfavorable for forming effective long crack, and then influence pressure break effect
Really.Therefore the mill resistance of research crack has great importance for more preferable pressing crack construction.
Traditional crack mill resistance test device, the cavity of predominantly one cuboid, built-in different mill baffle-walls are tested,
, it is necessary to open casing after experiment terminates, take out mill baffle-wall and change, process wastes time and energy, not easy to operate.
The content of the invention
For deficiency of the prior art, the present invention provides a kind of experimental provision of automatic change crack wall mill resistance.
The invention also discloses the method for work of above-mentioned experimental provision.
The invention also discloses the method for carrying out carrying out simulation fracture mill resistance experiment using above-mentioned experimental provision.
Technical scheme is as follows：
A kind of experimental provision of automatic change crack wall mill resistance, including：
Main box：Being set in outside rotating cylinder, and at least include one side inside main box is used for the static state of simulation fracture in fact
Test face；
Rotating cylinder：Including multiple dynamic experiment faces for being used to simulate different mill resistances, the rotating cylinder is axially disposed within by rotating shaft
Rotated in main box；When the dynamic experiment face is with the opposing parallel setting in the static experiment face, simulation is formed between the two and is split
Seam, the axial boundary sealing of the simulation fracture is set.In the present invention, when making simulation fracture, fixed rotating cylinder, right
The axial boundary of simulation fracture is sealed using sealing strip, both sides above and below simulation fracture is kept sealing state, it is ensured that to carry out mill resistance
It is water-tight during experiment.
According to currently preferred, rotating cylinder axial rotation in the main box by hand cranking handle.
According to currently preferred, the groove for fixing gravel is provided with the dynamic experiment face.
According to currently preferred, the groove is cement tub.In the present invention, dynamic experiment face upper surface is provided with water
Mud groove, for laying gravel, smears cement to fix gravel, simulates the crack inner surface of different mill resistances.In experiment, regulation
The wherein experiment face of rotating cylinder is parallel with main box inwall, makes to produce simulation fracture between main box inwall and dynamic experiment face, institute
The width for stating simulation fracture is 2~12mm, so that Experimental Flowing Object passes through.
According to currently preferred, the main box generally cuboid, folding is set on an oblong lateral surface wherein
Protecgulum is equipped with, the protecgulum includes the sealed frame for being inlaid with static experiment face.In the present invention, the main box is one rectangular
Body casing, including a cavity, are large enough to hold rotating cylinder and are rotated wherein.In the present invention, the upper lid of main box, which is also used, to be opened
Lid design, for laying gravel in the cement tub of rotating cylinder, and after being fixed using cement or other binding materials, upset turns
Cylinder, sets gradually the mill resistance layer of different mill resistance parameters.Meanwhile, the static experiment face of the protecgulum can also be relative with the mill resistance layer
It is arranged in parallel to form simulation fracture, passes through to carry out mill resistance experiment for Experimental Flowing Object.
According to currently preferred, the static experiment face generally transparent visual window., can be by described in the present invention
Transparent visual window observes Experimental Flowing Object, transport conditions of such as proppant around mill resistance layer gravel.
According to currently preferred, folding is provided with bonnet on another oblong lateral surface of the main box.This design
Advantage be, mill resistance experiment completed after, by bonnet respectively will described in dynamic experiment face grind resistance layer remove.Frosted
According to currently preferred, the rotating cylinder is cuboid, and its four rectangular side walls are respectively to have different mill resistances
Four dynamic experiment faces.In the present invention, described rotating cylinder is also rectangular parallelepiped structure, and centre is provided with a rotating shaft so that turn
Cylinder can be rotated around it, and shaft end has a hand cranking handle, and the position of rotating cylinder is adjusted by the way of manual.
According to currently preferred, it is provided with the main box and position corresponding with the protecgulum for fixed dynamic
The neck in experiment face.
According to currently preferred, the outer rim of the neck is adapted with the external Circular test that the rotating cylinder rotates；It is described
The sealed frame of protecgulum is connected with the outside of the neck by fixing seal part.The advantage designed herein is, is rotating cylinder
Freely rotated in main box and enough spaces are provided, and simulation fracture can be realized simultaneously.
According to currently preferred, it is connected with respectively at the axial two ends of the main box and with the simulation fracture
Pressure gauge.In the present invention, the axial direction of the simulation fracture inside main box is provided at both ends with pressure gauge, exists for test experiments fluid
The pressure differential of presence is flowed in simulation fracture, pressure loss amount is known.
Such as method of work of above-mentioned experimental provision, including：Prepare the dynamic experiment face of a variety of mill resistances.
According to currently preferred, the dynamic experiment face of a variety of mill resistances is prepared including comprising the following steps that：
The protecgulum of the main box is opened, the rotating cylinder is rotated, the dynamic experiment face on rotating cylinder is exposed successively；Described
Gravel formation mill resistance layer is fixed on the surface in dynamic experiment face.
Such as method of work of above-mentioned experimental provision, including：Remove the mill resistance layer gravel on dynamic experiment face.
According to currently preferred, the mill resistance layer gravel removed on dynamic experiment face includes comprising the following steps that：Beat
The bonnet of the main box is opened, the rotating cylinder is rotated, the dynamic experiment face with mill resistance layer is passed sequentially through bonnet exposure, then
The dynamic experiment face is cleaned, the mill resistance layer is removed from dynamic experiment face surface.
The method for carrying out carrying out simulation fracture mill resistance experiment using above-mentioned experimental provision, including：
1) according to laboratory and site operation principle of similarity, the Experimental Flowing Object discharge capacity needed for mill resistance experiment is calculated；
2) the mill resistance layer with different mill resistance parameters is prepared in multiple dynamic experiment faces of the rotating cylinder respectively, gravel refers to flat
Equal particle diameter is more than 1 millimeter of rock or mineral chip thing, can be by adjusting laying density of the gravel in mill resistance layer, from grain
Footpath gravel of different sizes hinders to change the mill in dynamic experiment face；
3) protecgulum of the main box, revolving drum, the dynamic experiment face that fixation will be tested and the protecgulum are opened
Inwall is parallel, to form simulation fracture, and to its progress sealing fixation of the axial boundary of the simulation fracture, before sealing is described
Lid；
4) by main box, into the simulation fracture, injection experimentses fluid, to carry out mill resistance experiment, tests different mill resistance faces
Under, fluid passes through the pressure change caused by experiment；
5) repeat step 3), the dynamic experiment face with different mill resistances is changed by revolving drum.
The beneficial effects of the present invention are：
1st, the present invention changes traditional crack mill resistance test structure, and two sides of composition simulation fracture are changed to one quiet one
Two parts are moved, wherein movable part has multiple experiment mill resistance faces, can need to rotate according to experiment to prepare different mills
Coefficient is hindered, and carries out the mill resistance experiment of simulation fracture respectively.The present invention need to only hinder mill to be tested when once being tested
In face of accurate static main box inwall, formed after simulation fracture and its axial boundary is sealed.Can be with when preparing mill resistance face
Hindered by the mill that the stone of fixed different-grain diameter is smeared on dynamic experiment face to simulate different parameters.Casing sets to uncap simultaneously
Meter, it is easier to clean, is also easier to change mill resistance face.In the inventive solutions, the making in resistance face is ground, that is, lays sand
Gravel, is fixed on the dynamic experiment face by binding agent, by axis of rotation realize it is automatic change, once prepare can carry out it is many
Secondary experiment, improves conventional efficient, saves lab space.
2nd, in the present invention, when making simulation fracture, fixed rotating cylinder uses close in the axial boundary to simulation fracture
Strip of paper used for sealing is sealed, and both sides above and below simulation fracture is kept sealing state, it is ensured that carried out water-tight during mill resistance experiment.
3rd, in the present invention, dynamic experiment face upper surface is provided with cement tub, for laying gravel, smears cement with solid
Determine gravel, simulate the crack inner surface of different mill resistances.In experiment, the wherein experiment face and main box inwall for adjusting rotating cylinder are put down
OK, make to produce simulation fracture between main box inwall and dynamic experiment face, the width of the simulation fracture is 2~12mm, for
Experimental Flowing Object passes through.
4th, in the present invention, the main box is a rectangular box body, including a cavity, is large enough to hold rotating cylinder wherein
Rotated.In the present invention, the upper lid of main box also uses open cap design, for laying gravel in the cement tub of rotating cylinder, and
After being fixed using cement or other binding materials, reversing drum sets gradually the mill resistance layer of different mill resistance parameters.Meanwhile, institute
State the static experiment face of protecgulum can also form simulation fracture with the opposing parallel setting of mill resistance layer, pass through to enter for Experimental Flowing Object
Row mill resistance experiment.
5th, in the present invention, Experimental Flowing Object can be observed by the transparent visual window, such as proppant is in mill resistance layer gravel
The transport conditions of surrounding.
6th, the present invention will grind resistance layer removing respectively by designing bonnet described in dynamic experiment face.
7th, in the present invention, described rotating cylinder is also rectangular parallelepiped structure, and centre is provided with a rotating shaft so that rotating cylinder can be around
It is rotated, and shaft end has a hand cranking handle, and the position of rotating cylinder is adjusted by the way of manual.
8th, the present invention is provided with for fixing dynamic experiment face in the main box and position corresponding with the protecgulum
Neck, freely rotates in main box for rotating cylinder and provides enough spaces, and can realize simulation fracture simultaneously.
9th, in the present invention, the axial direction of the simulation fracture inside main box is provided at both ends with pressure gauge, for test experiments stream
Body flows the pressure differential of presence in simulation fracture, knows pressure loss amount.
Brief description of the drawings
Fig. 1 is the schematic diagram of the mill resistance layer of the present invention prepared in dynamic experiment face, and the gravel on its surface is not of uniform size；
Fig. 2 is the schematic diagram of the mill resistance layer of the present invention prepared in dynamic experiment face, and the gravel on its surface is in the same size；
Fig. 3 is obtained after carrying out mill resistance experiment using experimental provision of the present invention：Gravel diameter is ground to simulation fracture
Hinder influence curve schematic diagram；
Fig. 4 is the overall structure sectional view of experimental provision of the present invention；
Fig. 5 is the cross-sectional end view of experimental provision of the present invention.
In figs. 1-5,1, main box；
2nd, rotating cylinder；2-1, dynamic experiment face；
3rd, rotating shaft；4th, simulation fracture；5th, the axial boundary of simulation fracture 4；6th, groove；7th, protecgulum；8th, sealed frame；9th, it is transparent
Visual window；10th, bonnet；11st, neck；12nd, the external Circular test that the rotating cylinder 2 rotates；13rd, fixing seal part；14th, gravel.
Embodiment
Below by embodiment and the present invention will be further described with reference to accompanying drawing, but not limited to this.
Embodiment 1,
A kind of experimental provision of automatic change crack wall mill resistance, including：
Main box 1：Being set in outside rotating cylinder 2, and at least include one side inside main box 1 is used for the static state of simulation fracture
Experiment face；
Rotating cylinder 2：Including multiple dynamic experiment face 2-1 for being used to simulate different mill resistances, the rotating cylinder 2 passes through the axial direction of rotating shaft 3
It is arranged on rotation in main box 1；When the dynamic experiment face 2-1 is with the opposing parallel setting in the static experiment face, between the two
Simulation fracture 4 is formed, the sealing of axial boundary 5 of the simulation fracture 4 is set.
Embodiment 2,
A kind of automatic change crack wall grinds the experimental provision of resistance as described in Example 1, and its difference is, the rotating cylinder
2 by hand cranking handle in the main box 1 axial rotation.
The groove 6 for fixing gravel is provided with the dynamic experiment face 2-1.The groove 6 is cement tub.
Embodiment 3,
A kind of automatic change crack wall as described in embodiment 1,2 grinds the experimental provision of resistance, and its difference is, the master
The generally cuboid of casing 1, folding is provided with protecgulum 7 on an oblong lateral surface wherein, and the protecgulum 7 is quiet including being inlaid with
State tests the sealed frame 8 in face.The static experiment face generally transparent visual window 9.
The rotating cylinder 2 is cuboid, and its four rectangular side walls are respectively four dynamic experiment faces with different mill resistances
2-1。
Embodiment 4,
A kind of experimental provision of automatic change crack wall mill resistance as described in embodiment 1-3, its difference is, described
Folding is provided with bonnet 10 on another oblong lateral surface of main box 1.
Embodiment 5,
A kind of experimental provision of automatic change crack wall mill resistance as described in embodiment 1-4, its difference is, described
Main box 1 and neck 11 for fixing dynamic experiment face 2-1 is provided with the corresponding position of the protecgulum 7.
The outer rim of the neck 11 is adapted with the external Circular test 12 that the rotating cylinder 2 rotates；The sealing strip of the protecgulum 7
Frame 8 is connected with the outside of the neck 11 by fixing seal part 13.
Embodiment 6,
A kind of experimental provision of automatic change crack wall mill resistance as described in embodiment 1-5, its difference is, described
The axial two ends of main box 1 and pressure gauge is connected with respectively with the simulation fracture 4.
Embodiment 7,
Such as method of work of above-mentioned experimental provision, including：Prepare the dynamic experiment face of a variety of mill resistances.Prepare a variety of mill resistances
Dynamic experiment face includes comprising the following steps that：
The protecgulum 7 of the main box is opened, the rotating cylinder 2 is rotated, the dynamic experiment face 2-1 on rotating cylinder 2 is exposed successively；
Gravel formation mill resistance layer is fixed on the surface of the dynamic experiment face 2-1.
Embodiment 8,
Such as method of work of above-mentioned experimental provision, including：Remove the mill resistance layer gravel on dynamic experiment face.Described remove is moved
Mill resistance layer gravel on state experiment face includes comprising the following steps that：The bonnet 10 of the main box is opened, the rotating cylinder 2 is rotated,
Make the dynamic experiment face 2-1 with mill resistance layer pass sequentially through bonnet 10 to expose, then the dynamic experiment face 2-1 is carried out clear
Wash, the mill resistance layer is removed from dynamic experiment face 2-1 surfaces.
Embodiment 9,
The method for carrying out carrying out simulation fracture mill resistance experiment using above-mentioned experimental provision, wherein the main box size model
Enclose for (1000~3000) mm × (300~500) mm × (400~600) mm, preferably 1200 × 400 × 500mm, formed
The width of simulation fracture 4 is 5mm, so that Experimental Flowing Object, i.e. proppant pass through；The mill resistance experiment includes：
1) according to laboratory and site operation principle of similarity, the Experimental Flowing Object discharge capacity needed for mill resistance experiment is calculated；
2) the mill resistance layer with different mill resistance parameters is prepared in multiple dynamic experiment faces of the rotating cylinder respectively, gravel refers to flat
Equal particle diameter is more than 1 millimeter of rock or mineral chip thing, can be by adjusting laying density of the gravel in mill resistance layer, from grain
Footpath gravel of different sizes hinders to change the mill in dynamic experiment face；
3) protecgulum of the main box, revolving drum, the dynamic experiment face that fixation will be tested and the protecgulum are opened
Inwall is parallel, to form simulation fracture, and to its progress sealing fixation of the axial boundary of the simulation fracture, before sealing is described
Lid；
4) by main box, into the simulation fracture, injection experimentses fluid, to carry out mill resistance experiment, tests different mill resistance faces
Under, fluid passes through the pressure change caused by experiment；
5) repeat step 3), the dynamic experiment face with different mill resistances is changed by revolving drum.
By changing the particle diameter and dense degree of gravel, to imitate the mill resistance face in different cracks, such as glutenite, sandstone
With shale etc..It is as shown in Figure 1, 2 two kinds of different mill resistance layers.
According to the present embodiment, based on the principle of similitude, according to parameter after the pressure of certain block a bite well, (single slot is long
120m, the high 40m of seam, slit width 6mm) (the high 0.4m of seam, seam are grown with the dimensional parameters of visual sides of fracture face analogue means of the invention
1.0m, slit width 5mm), make sealing flow velocity consistent, the operational discharge capacity at scene is converted into experiment discharge capacity, operational discharge capacity is arranged with experiment
Corresponding relation between amount is as shown in table 1 below.
The operational discharge capacity of table 1 and the table of comparisons of experiment discharge capacity
| Operational discharge capacity (m3/min) | Flow velocity (m/s) in seam | Test discharge capacity (m3/h) |
| 3 | 0.208 | 1.47 |
| 4 | 0.278 | 2.00 |
| 5 | 0.347 | 2.49 |
| 6 | 0.417 | 2.95 |
| 7 | 0.486 | 3.48 |
Gravel refers to the rock or mineral chip thing that average grain diameter is more than 1 millimeter, by testing under different displacements, phase in gravel
Unit area internal pressure loss on same gravel concentration (mass ratio is 20%), the gravel template of different gravel diameters, studies gravel
The affecting laws of mill resistance in diameter opposite joint.
Three kinds of mill resistance layers are prepared on the dynamic experiment face according to the proportioning of above-mentioned gravel：It is gravel diameter 3mm respectively
~6mm, 8mm~10mm and 12mm~15mm glutenite sides of fracture face mould block, i.e., be only used only the three of rotating cylinder dynamic experiment face
Individual face.
The aqueous fracturing fluid that the Experimental Flowing Object used is 20mPas for tested viscosity, using 20/40 mesh ceramsite propping agent,
Sand ratio is 10%, and mill resistive law is illustrated in fig. 3 shown below under more than 1 experiment discharge capacities of test such as table.
Test result indicates that：Generally speaking, in crack friction loss with discharge capacity into approximately linear growth trend, propagation process
In show fluctuation within a narrow range；Mill resistance increases with the increase of gravel diameter, and discharge capacity increases, and the increasing degree of mill resistance subtracts
It is small；Compared with gravel diameter, influence of the discharge capacity to friction loss is bigger.
Claims (10)
1. a kind of experimental provision of automatic change crack wall mill resistance, it is characterised in that the experimental provision includes：
Main box：Being set in outside rotating cylinder, and at least include one side inside main box is used for the static experiment face of simulation fracture；
Rotating cylinder：Including multiple dynamic experiment faces for being used to simulate different mill resistances, the rotating cylinder is axially disposed within main tank by rotating shaft
Rotate in vivo；When the dynamic experiment face is with the opposing parallel setting in the static experiment face, simulation fracture is formed between the two, institute
The axial boundary sealing for stating simulation fracture is set.
2. the experimental provision of a kind of automatic change crack wall mill resistance according to claim 1, it is characterised in that described turn
Cylinder axial rotation in the main box by hand cranking handle.
3. the experimental provision of a kind of automatic change crack wall mill resistance according to claim 1, it is characterised in that described
The groove for fixing gravel is provided with dynamic experiment face；It is preferred that, the groove is cement tub.
4. a kind of experimental provision of automatic change crack wall mill resistance according to claim 1, it is characterised in that the master
Casing generally cuboid, folding is provided with protecgulum on an oblong lateral surface wherein, and the protecgulum includes being inlaid with static state
The sealed frame in experiment face；It is preferred that, the static experiment face generally transparent visual window.
5. the experimental provision of a kind of automatic change crack wall mill resistance according to claim 4, it is characterised in that described
Folding is provided with bonnet on another oblong lateral surface of main box；
It is preferred that, the rotating cylinder is cuboid, and its four rectangular side walls are respectively four dynamic experiments with different mill resistances
Face；
It is preferred that, the neck for fixing dynamic experiment face is provided with the main box and position corresponding with the protecgulum；
The outer rim of the neck is adapted with the external Circular test that the rotating cylinder rotates；The sealed frame of the protecgulum and the card
The outside of groove is connected by fixing seal part.
6. the experimental provision of a kind of automatic change crack wall mill resistance according to claim 1, it is characterised in that described
The axial two ends of main box and pressure gauge is connected with respectively with the simulation fracture.
7. the method for work of experimental provision as claimed in any one of claims 1 to 6, it is characterised in that the method for work includes：
Prepare the dynamic experiment face of a variety of mill resistances.
8. prepared using a kind of experimental provision of automatic change crack wall mill resistance described in claim 1-6 any one a variety of
The dynamic experiment face of mill resistance includes comprising the following steps that：
The protecgulum of the main box is opened, the rotating cylinder is rotated, the dynamic experiment face on rotating cylinder is exposed successively；In the dynamic
Gravel formation mill resistance layer is fixed on the surface in experiment face.
9. the method for work of experimental provision according to claim 1, including：Remove the mill resistance layer gravel on dynamic experiment face；
It is preferred that, the mill resistance layer gravel removed on dynamic experiment face includes comprising the following steps that：Open the main box
Bonnet, rotates the rotating cylinder, the dynamic experiment face with mill resistance layer is passed sequentially through bonnet exposure, then to the dynamic experiment
Face is cleaned, and the mill resistance layer is removed from dynamic experiment face surface.
10. the method for carrying out carrying out simulation fracture mill resistance experiment using experimental provision described in claim 1-6 any one, its
It is characterised by, this method includes：
1) according to laboratory and site operation principle of similarity, the Experimental Flowing Object discharge capacity needed for mill resistance experiment is calculated；
2) the mill resistance layer with different mill resistance parameters is prepared in multiple dynamic experiment faces of the rotating cylinder respectively；
3) protecgulum of the main box, revolving drum, the dynamic experiment face that fixation will be tested and the protecgulum inwall are opened
It is parallel, to form simulation fracture, and to its progress sealing fixation of the axial boundary of the simulation fracture, seal the protecgulum；
4) by main box, into the simulation fracture, injection experimentses fluid, to carry out mill resistance experiment, is tested under different mill resistance faces,
Fluid passes through the pressure change caused by experiment；
Repeat step 3), the dynamic experiment face with different mill resistances is changed by revolving drum.
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| CN2156934Y (en) * | 1993-02-09 | 1994-02-23 | 李兴隆 | Tumbling mill |
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Application publication date: 20170929 |