CN208366689U - A kind of hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture - Google Patents
A kind of hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture Download PDFInfo
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- CN208366689U CN208366689U CN201821089275.7U CN201821089275U CN208366689U CN 208366689 U CN208366689 U CN 208366689U CN 201821089275 U CN201821089275 U CN 201821089275U CN 208366689 U CN208366689 U CN 208366689U
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Abstract
The utility model provides a kind of hydraulic fracturing experiments test specimen and preparation method thereof of prefabricated intrinsic fracture, the wherein hydraulic fracturing experiments test specimen of the prefabricated intrinsic fracture, it is to consolidate molding petrophysical model and the fractured model in the petrophysical model after pouring using rock slurry, and there is the blind hole opened up in direction experiment test specimen, in which: the fractured model is the sandwich that can simulate intrinsic fracture that the fibre sheet material being oppositely arranged and filled layer are formed.Technical solution provided by the utility model can really simulate the state of intrinsic fracture under formation conditions, so as to meet research intrinsic fracture developmental state, crack filling situation, wellbore or the requirement of preforation tunnel and intrinsic fracture positional relationship.
Description
Technical field
The utility model belongs to hydraulic fracturing indoor physical simulation experimental technique field, and in particular to one kind is prefabricated naturally to be split
The hydraulic fracturing experiments test specimen of seam.
Background technique
Increasingly depleted with conventional gas and oil resource, the exploitation of unconventional petroleum resources is increasingly taken seriously.Waterpower pressure
Split be effective exploitation unconventional petroleum resources one of key technology.During hydraulic fracturing site operation, fracturing fluid is passed through
High pressure pump group injects stratum, and since the injection rate of fracturing fluid in stratum is greater than fracturing fluid leak amount, fracturing fluid has suppressed height on stratum
Pressure, when pressure reaches certain value, formation fracture generates hydraulic fracture.For unconventional oil and gas reservoir, hydraulic fracture is extending
When encountering intrinsic fracture in the process, extension path can change；Meanwhile it naturally being split if open hole bore or preforation tunnel bore to meet
Seam, intrinsic fracture will affect hydraulic fracture initial cracking pressure size and incipient crack extending direction.
Hydraulic fracturing indoor physical simulation is tested at present, is mostly made using the target zone outcropping rock for being processed into standard shape
To test test specimen.But since natural rock internal fissure development randomness is strong and fracture intensity is invisible, it is difficult to meet
The requirement of theoretical research is carried out to the concrete condition of intrinsic fracture development impact hydraulic fracture crack initiation and extension.Therefore, using mould
The prefabricated crack synthetic core sample of quasi- intrinsic fracture development is as experiment test specimen just at the hot spot of current research.
Wuhan rock-soil mechanics research institute of the Chinese Academy of Sciences has developed a kind of crannied rock fracture simulation sample of tool, mainly sharp
Preforation tunnel is filled with soluble salts substances, ease of solubility salt is dissolved after consolidating fracturing fluid injection pipe, obtains unfilled penetrate
Eyelet, using the perforation eye as prefabricated intrinsic fracture.Energy institute of Institutes Of Technology Of He'nan has developed in a kind of simulation coal and rock
The experiment test specimen of complex fracture is specifically added ice cube in manufacturing artificial rock sample, dissolves to form intrinsic fracture to ice cube.
Both the above is tested in test specimen, and being formed by crack all is to open, with the big many places of intrinsic fracture under formation condition
It is not inconsistent in be closed or be filled the case where, and fracture pattern is uncontrollable, therefore there are significant limitations, it is difficult to accurate research
Intrinsic fracture develops the influence to pressure break.
Utility model content
In view of the above-mentioned drawbacks in the prior art, the utility model provides a kind of hydraulic fracturing experiments of prefabricated intrinsic fracture
Test specimen, the hydraulic fracturing experiments test specimen of the prefabricated intrinsic fracture have closer to stratum intrinsic fracture development truth and form
Controllable prefabricated crack.
To achieve the above object, the utility model provides a kind of hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture, is
Molding petrophysical model and the fractured model in the petrophysical model are consolidated after pouring using rock slurry, and are had towards real
Test the blind hole opened up in test specimen, in which: fractured model be the fibre sheet material being oppositely arranged and filled layer formed can simulate day
The sandwich in right crack.
Further, the hydraulic fracturing experiments test specimen of the prefabricated intrinsic fracture is to be placed in fractured model to have poured part rock
It is continued to complete after in the mold of stone slurry and pours and consolidate molding column.
Further, filled layer is the single or multi-layer structure that proppant particles are formed, and filled layer and fibre sheet material it
Between fixed by gluing.
Further, the layer that is at least partly filled that gap is formed by between the fibre sheet material being oppositely arranged is filled.
Further, fibre sheet material is with fibre sheet material similar with the simulation permeability of intrinsic fracture.
Further, fibre sheet material is quantification of 150-200g/ square metres, thickness is less than the paper of 1mm.
Further, in the hydraulic fracturing experiments test specimen of the prefabricated intrinsic fracture, fractured model with a thickness of 2~3mm.
Further, in the hydraulic fracturing experiments test specimen of the prefabricated intrinsic fracture, petrophysical model is consolidated by cement mortar
Form obtained petrophysical model.
Further, blind hole pass through fractured model, alternatively, with fractured model mutually from.
Further, blind via bottom is coated with the gluing layer that can prevent the blind via bottom crack initiation
The hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture provided by the utility model has petrophysical model and is located at and is somebody's turn to do
Fractured model in petrophysical model, wherein the fractured model has the fibre sheet material that is oppositely arranged of two panels, and be filled in this two
The filled layer being formed by between piece fibre sheet material in gap.It is arranged by above structure:
1. by the size shape of fibre sheet material, the position of fractured model, direction, angle can naturally be split with simulated formation
The developmental state of seam, the including but not limited to geometric shape of intrinsic fracture, position, trend and inclination angle.
2. intrinsic fracture inner stuffing can be simulated by laying (filling) situation of filled layer between two fibre sheet materials
Situation is filled, (crack wall surface only has portion to have proppant) can be locally filled with the position simulation fracture of proppant and is split
Seam is filled up completely (there are proppant in wall surface all positions in crack)；Quantity can be laid with proppant and lays number of plies simulation naturally splits
Slit width degree situation.
3. can be closed by the permeability of fibre sheet material, the fitting situation of two fibre sheet materials with simulated formation intrinsic fracture
With permeable feature.
4. the two intersection can simulate wellbore and drill or preforation tunnel by positional relationship between fractured model and blind hole
Across intrinsic fracture, the influence that intrinsic fracture extends crack initiation under different situations can be simulated by the change of angle of intersection；Two
Person is mutually from the influence that can study hydraulic fracture intrinsic fracture fracture extension situation during extension.
In conclusion the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture provided by the utility model, it can be true
Simulate intrinsic fracture state under formation conditions, so as to meet research intrinsic fracture developmental state, crack filling situation,
The requirement of wellbore or preforation tunnel and intrinsic fracture positional relationship.
Also, the hydraulic fracturing experiments test specimen of the prefabricated intrinsic fracture also has the characteristics that production method is simple.
Detailed description of the invention
Fig. 1 is the structural representation of the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture provided by the embodiment of the utility model
Figure；
Fig. 2 is the schematic diagram of production fractured model provided by the embodiment of the utility model.
Description of symbols:
1- petrophysical model；
2- fractured model；
21- fibre sheet material；
22- filled layer；
3- blind hole.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.
Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.In the absence of conflict, following embodiments
In feature can be combined with each other.
Fig. 1 is the structural schematic diagram of the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture provided in this embodiment；Fig. 2 is this
The schematic diagram for the production fractured model that embodiment provides.As depicted in figs. 1 and 2, prefabricated intrinsic fracture provided in this embodiment
Hydraulic fracturing experiments test specimen, to consolidate molding petrophysical model 1 after pouring using rock slurry and in the petrophysical model 1
Fractured model 2, and there is the blind hole 3 opened up in direction experiment test specimen, in which: fractured model 2 is the fibre sheet material being oppositely arranged
21 and filled layer 22 formed the sandwich that can simulate intrinsic fracture.
The hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture provided by the present embodiment has the rock for simulation rock
Stone model 1 and the fractured model 2 in the petrophysical model 1, for simulating intrinsic fracture, and have for simulate wellbore or
The blind hole 3 of preforation tunnel.
Wherein, the fibre sheet material 21 which there is two panels to be oppositely arranged, and it is filled in the two panels fibre sheet material
The filled layer 22 being formed by between 21 in gap.Gap is formed by between the fibre sheet material 21 to be used to simulate intrinsic fracture,
Fibre sheet material 21 is used to simulate two wall surfaces of intrinsic fracture, and filled layer 22 is then for simulating the filler in intrinsic fracture.
In this way, due to being equipped with filled layer 22 in simulation intrinsic fracture, it is thus possible to the most of intrinsic fracture quilts of accurate simulation
The actual conditions of filling；But also the feature of intrinsic fracture closure can be simulated according to the fitting situation between fibre sheet material 21.
At the same time it can also according to the geometric shape of the size and shape accurate simulation intrinsic fracture of fibre sheet material 21；Pass through control critical eigenvalue
The angle and direction of model 2, tendency, inclination angle and the trend of intrinsic fracture in accurate simulation stratum.
Also, scheme provided by the present embodiment, additionally it is possible to which accurate control critical eigenvalue form realizes intrinsic fracture in stratum
Accurate simulation, theoretical research is carried out to the concrete condition of intrinsic fracture development impact hydraulic fracture crack initiation and extension to meet
Requirement.
Specifically, the hydraulic fracturing experiments test specimen of the prefabricated intrinsic fracture, is to be placed in fractured model 2 to have poured part rock
It is continued to complete after in the mold of stone slurry and pours and consolidate molding column.
In a specific implementation process of the present embodiment, the hydraulic fracturing experiments test specimen of the prefabricated intrinsic fracture is according to following step
Rapid product obtained:
1) rock slurry is poured in mold, and in the process, the fractured model 2 made in advance is placed on mould
Setting position in tool, control critical eigenvalue model 2 are fully wrapped around by rock slurry；
2) it consolidates and forms to rock slurry, obtain petrophysical model 1 and the fractured model 2 in the petrophysical model 1；
3) mold is removed, and opens up blind hole 3 on petrophysical model 1, obtains the hydraulic fracturing experiments examination of prefabricated intrinsic fracture
Part.
As described above, filled layer 22 is used to simulate the filler in intrinsic fracture in fractured model 2, generally can be used
Proppant particles are made.
Specifically, the single or multi-layer structure that filled layer 22 is formed for proppant particles, and filled layer 22 and fibre sheet material
It is fixed between 21 by gluing.Certainly, if filled layer 22 has multilayered structure, consolidate between adjacent filled layer 22 also by gluing
It is fixed.
During actual fabrication, the production of fractured model 2 can be completed in accordance with the following steps: first in a fibre sheet material 21
Surface on spreading glue；Then proppant particles are pasted onto 21 surface of fibre sheet material for being coated with glue, form filled layer
22；Finally another fibre sheet material 21 is pasted on proppant particles, to form " fibre sheet material 21- filled layer 22- fibre plate
The sandwich of material 21 ".
Proppant particles are generally fine particle spherical or subsphaeroidal, that size is essentially identical, according to proppant particles
Partial size and the number of plies of filled layer 22 be capable of the width situation of accurate simulation intrinsic fracture.
Specifically, can it is smooth on the surface of a fibre sheet material 21, equably paste one layer of proppant particles, then will
Another fibre plate 22 covers and is pasted onto proppant particles surface, i.e. formation " fibre sheet material 21- single layer filled layer 22- fibre plate
The sandwich of material 21 ".
Alternatively, can also it is smooth on the surface of fibre sheet material 21, equably paste two or more layers proppant particles, so
Another fibre plate 22 is covered and be pasted onto proppant particles surface afterwards, forms " fibre sheet material 21- multilayer filled layer 22- fiber
The sandwich of sheet material 21 ".
It is appreciated that the filling situation of proppant can actually be filled according to filler in practical intrinsic fracture to be simulated
It fills out situation and determines that therefore, the layer that is at least partly filled that gap is formed by between the fibre sheet material 21 being oppositely arranged is filled.
Specifically, can be locally filled with the paste position of proppant simulation intrinsic fracture, (i.e. crack wall surface only has part
Have proppant) and intrinsic fracture be filled up completely (wall surface all positions in crack are pasted with proppant).
As described above, being formed by gap between the fibre sheet material 21 being oppositely arranged for simulating intrinsic fracture, therefore can
To reasonably select the fibre sheet material 21 with suitable size and shape according to the geometric shape of intrinsic fracture.
Fibre sheet material 21 is used to simulate the wall surface of intrinsic fracture, therefore fibre sheet material 21 should be with and simulate intrinsic fracture
The similar fibre sheet material 21 of permeability, to realize the accurate simulation of intrinsic fracture.
Meanwhile the fibre sheet material 21 is preferably provided with certain hardness, in production fractured model 2 and pouring molding process
In, fibre sheet material 21 can remain unchanged shape as far as possible, and fibre sheet material gets over Bao Yuehao.Under normal circumstances, fibre sheet material 21 is optional
Select quantification of 150-200g/ square metres, thickness be less than 1mm paper, such as periodical, brochure, magazine manuseript binder or
Business card paper.
It is appreciated that the water imbibition of the fibre sheet material 21 should not be too big, so that being poured in rock slurry and consolidation formed
Cheng Zhong, it is broken that the not hygroscopic softening of the fibre sheet material 21 even results in separation.
Also, the whole thickness general control of fractured model 2 is in 2~3mm, and wherein the thickness of fibre sheet material 21 is smaller more
It is good.
In the utility model, petrophysical model 1 be consolidated after being poured by rock slurry it is molding, for realize rock accurate mould
Quasi-, in the specific implementation process, petrophysical model 1 is obtained by cement mortar consolidation molding.
Specifically, cement mortar is the slurry being made into as needed by cement, Sha Heshui, the cement that different ratio obtains
Mortar can be used for simulating the rock with different mechanical strengths and physical property, therefore can be according to the rock of institute's simulated formation
The preferred appropriate proportioning of property, for example after cement, sand and water are mixed and solidified with the mass ratio of 3:1:1, can be used to accurate mould
Quasi- tight sand.
In the present embodiment, as shown in Figure 1, blind hole 3 can pass through fractured model 2, i.e. blind hole 3 intersects with fractured model 2, with
Simulation wellbore drills or preforation tunnel passes through intrinsic fracture, can also be simulated by the change of angle of intersection natural under different situations
The influence that crack extends crack initiation.
Alternatively, can also mutually mutually extend from hydraulic fracture can be studied from, the two between blind hole 3 and fractured model 2
Intrinsic fracture fracture extends the influence of situation in journey.
Further, can also be coated in 3 bottom of blind hole can prevent the gluing layer of the blind via bottom crack initiation from (not scheming
Show).Specifically, being to instill a certain amount of glue in 3 bottom of blind hole, prevent crack from blind via bottom crack initiation.Usually using cementing
Glue of good performance, such as epoxide-resin glue.
The hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture provided by the present embodiment:
1. passing through the size shape of fibre sheet material 21, the position of fractured model 2, direction, angle can be natural with simulated formation
The developmental state in crack, the including but not limited to geometric shape of intrinsic fracture, position, trend and inclination angle.
2. filling in intrinsic fracture can be simulated by laying (filling) situation of filled layer 22 between two fibre sheet materials 21
The filling situation of object can be locally filled with (crack wall surface only has portion to have proppant) with the position simulation fracture of proppant
(there are proppant in wall surface all positions in crack) is filled up completely with crack；Quantity can be laid with proppant and lays the number of plies simulates day
Right fracture width situation.
3. can naturally be split with simulated formation by the permeability of fibre sheet material 21, the fitting situation of two panels fibre sheet material 21
Stitch permeable and closure feature.
4. the two intersection can simulate wellbore and drill or Perforation by positional relationship between fractured model 2 and blind hole 3
Eye passes through intrinsic fracture, can simulate the influence that intrinsic fracture extends crack initiation under different situations by the change of angle of intersection；
The two is mutually from the influence that can study hydraulic fracture intrinsic fracture fracture extension situation during extension.
In conclusion the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture provided by the present embodiment, it being capable of true mould
The state of quasi- intrinsic fracture under formation conditions, so as to meet research intrinsic fracture developmental state, crack filling situation, well
The requirement of eye or preforation tunnel and intrinsic fracture positional relationship.
Embodiment two
The present embodiment provides a kind of production sides of the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture described in embodiment one
Method please refers to Fig. 1 and Fig. 2, the step including production fractured model 2 and the hydraulic fracturing experiments test specimen for making prefabricated intrinsic fracture
It is rapid:
S1, production fractured model
(1) according to institute's intrinsic fracture shape to be simulated, size, the identical fibre sheet material 21 of two plate shapes is cut,
Two wall surfaces as simulation intrinsic fracture.
Wherein, which is specially the scraps of paper, and differential permeability and the permeability of intrinsic fracture are substantially similar
The scraps of paper, and its quantification of 150-200g/ square metres, thickness be less than 1mm.Generally usable business card paper or periodical, journal surface
Use paper.
(2) sheet of paper on piece applies glue wherein, and glue can guarantee during smearing with enough cementing strengths
On the basis of make glue smear it is thin as far as possible.
(3) with the filler of proppant simulation intrinsic fracture, proppant particles are sticked on the scraps of paper for being coated with glue, are formed
Filled layer 22.
Specifically, can according to required simulation intrinsic fracture fill situation, select proppant particles paste position, number and
The number of plies.Wherein filled layer 22 can be single-layer or multi-layer；Proppant particles can completely cover the entire scraps of paper, can also be only in paper
Proppant particles are pasted on the partial region on piece surface.
(4) the two panels scraps of paper are pasted together, are clipped in pasted proppant among two scraps of paper, form " fibre plate
The sandwich of material 21- filled layer 22- fibre sheet material 21 ", obtains the fractured model 2 with charges.
S2, production experiment test specimen
(1) assembly mold.
The specific size of mold can be determined according to the size of experiment test specimen.In a specific implementation process of the present embodiment, it uses
The matched rectangular steel plates of five block sizes, one piece is done bottom plate, and another four pieces are done side plate.Surface of steel plate is cleared up first, to guarantee
Then mould inside neat and tidy opens up card slot in wherein two pieces of side board edges being oppositely arranged, secondly by another two blocks of side plates
Edge is inserted respectively into the card slot, realizes the fixation between this five blocks of steel plates finally by bolt or other any known modes
It is connected with close, to form open rectangular mould.
After mold is completed, lubricating grease is uniformly smeared in mould inner wall with brush, later period consolidation easy to disassemble is molding
Test test specimen.
(2) rock slurry is configured
It drives into cement away fine powder, reduces finished ground cement and consolidate the shadow that the small agglomerate to be formed pours experiment test piece intensity to the later period
It rings；Cement, fine sand and water are uniformly mixed in bucket with the ratio set, form rock slurry.
Specifically, the mass ratio that can control between cement, fine sand and water is 3:1:1 or so, to simulate tight sand.
(3) rock slurry is poured
Configured rock slurry is poured into mold, in casting process, according to institute intrinsic fracture position to be simulated,
Trend, angle will be placed on setting position by ready-made fractured model 2 before.Continue for rock slurry to be poured into mold, until rock
The height of stone slurry is slightly above mold height, and control critical eigenvalue model 2 is wrapped up by rock slurry completely.
The formation of bubble should be reduced in casting process, and avoids the disturbance in subsequent casting process to preset intrinsic fracture.
It is appreciated that fractured model 2 is placed on the setting position in mold, refer in particular to according to the natural of required simulation
The angle and direction of fractured model 2 is rationally arranged in crack situation.Wherein angle is 3 axis of blind hole and 21 place plane of fibre sheet material
Between angle；Datum plane is generally considered as with any plane for being parallel to 3 axis of blind hole, fibre sheet material 21 is relative to the benchmark
The angle that plane is rotated is different, is considered as direction difference.The direction placed according to fractured model 2 and angle, that is, can determine and split
The spatial position of slit die type 2.
Under formation conditions, stress suffered by rock can simplify as horizontal maximum principal stress, horizontal minimum principal stress
These three mutually perpendicular stress with vertical stress.In experimentation, experiment test specimen equally also will receive three it is orthogonal
Confining pressure, to simulate actual formation situation.The angle and/or direction that fractured model 2 is placed are different, then test and answer suffered by test specimen
Power situation is also different.Therefore, the direction placed according to fractured model 2 and angle, being capable of intrinsic fracture in accurate description stratum
Tendency, inclination angle and trend.
(4) rock slurry consolidation molding
When the also not fully consolidated molding of rock slurry but when there is some strength, with long ruler by extra thickness along mould
Tool is bulldozed, it is ensured that rock slurry end face is smooth.
Water is applied in due course in rock slurry consolidation process, prevents from being made because overdrying cracks except crack in consolidation process
The experiment test specimen of other parts intensity homogeneous except model.
(5) after the fully consolidated molding of rock slurry, mold is dismantled.
(6) it is drilled with blind hole
It is bored on experiment test specimen and opens one section of blind hole 3, then epoxide-resin glue is instilled in 3 bottom of blind hole, in 3 bottom of blind hole
Gluing layer is formed, is prevented in the weaker place's crack initiation of 3 bottom strength of blind hole.
It is appreciated that the above-mentioned process for being drilled with blind hole 3, actually can be regarded as simulation drilling process；It is instilled in blind hole 3
Glue actually can be regarded as simulation Completion Operations.Therefore the glue instilled into blind hole 3, such as epoxide-resin glue can be used for mould
Quasi- completion fluid.
Specifically, as described in Figure 1, blind hole 3 can pass through fractured model 2, the two intersection can simulate wellbore and drill or penetrate
Hole eyelet passes through intrinsic fracture, can simulate the shadow that intrinsic fracture extends crack initiation under different situations by the change of angle of intersection
It rings；Alternatively, blind hole 3 mutually can also naturally be split from can study hydraulic fracture during extension with 2 phase of fractured model from, the two
Stitch the influence that fracture extends situation.
It can be seen that simple method, the state of more true simulation intrinsic fracture under formation conditions can be used,
Study intrinsic fracture developmental state, crack filling situation, wellbore or preforation tunnel and intrinsic fracture positional relationship.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification.
Claims (10)
1. a kind of hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture, which is characterized in that it is solid after being poured using rock slurry
It ties molding petrophysical model and the fractured model in the petrophysical model, and has blind towards opening up in the experiment test specimen
Hole, in which:
The fractured model is the sandwich that can simulate intrinsic fracture that the fibre sheet material being oppositely arranged and filled layer are formed.
2. the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture according to claim 1, which is characterized in that the prefabricated day
The hydraulic fracturing experiments test specimen in right crack is continued to complete after being placed in fractured model in the mold for pouring part rock slurry
Pour and consolidate molding column.
3. the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture according to claim 1 or 2, which is characterized in that described to fill out
Filling layer is the single or multi-layer structure that proppant particles are formed, and solid by gluing between the filled layer and the fibre sheet material
It is fixed.
4. the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture according to claim 1 or 2, which is characterized in that the phase
To being formed by least partly being filled by the filled layer for gap between the fibre sheet material of setting.
5. the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture according to claim 1 or 2, which is characterized in that the fibre
Tieing up sheet material is with fibre sheet material similar with the simulation permeability of intrinsic fracture.
6. the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture according to claim 5, which is characterized in that the fibre plate
Material is quantification of 150-200g/ square metres, thickness is less than the paper of 1mm.
7. the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture according to claim 1 or 2, which is characterized in that described to split
Slit die type with a thickness of 2~3mm.
8. the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture according to claim 1 or 2, which is characterized in that the rock
Stone model is the petrophysical model obtained by cement mortar consolidation molding.
9. the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture according to claim 1, which is characterized in that the blind hole is worn
Cross the fractured model, alternatively, with the fractured model mutually from.
10. according to claim 1 or the hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture described in 9, which is characterized in that described blind
Hole bottom is coated with the gluing layer that can prevent the blind via bottom crack initiation.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060470A (en) * | 2018-07-10 | 2018-12-21 | 中国石油大学(北京) | A kind of hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture and preparation method thereof |
| CN110242267A (en) * | 2019-05-17 | 2019-09-17 | 山东科技大学 | For simulating the hydraulic fracturing shearing test system and method for geothermal system hot dry rock |
| CN110658037A (en) * | 2019-09-11 | 2020-01-07 | 中国石油大学(北京) | Shale fracturing sample with bedding and natural fracture coupled and preparation method thereof |
| CN112504936A (en) * | 2020-11-30 | 2021-03-16 | 中国地质大学（北京） | Testing device and testing method for simulating and researching permeability of deep coal bed methane |
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2018
- 2018-07-10 CN CN201821089275.7U patent/CN208366689U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060470A (en) * | 2018-07-10 | 2018-12-21 | 中国石油大学(北京) | A kind of hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture and preparation method thereof |
| CN110242267A (en) * | 2019-05-17 | 2019-09-17 | 山东科技大学 | For simulating the hydraulic fracturing shearing test system and method for geothermal system hot dry rock |
| CN110658037A (en) * | 2019-09-11 | 2020-01-07 | 中国石油大学(北京) | Shale fracturing sample with bedding and natural fracture coupled and preparation method thereof |
| CN112504936A (en) * | 2020-11-30 | 2021-03-16 | 中国地质大学（北京） | Testing device and testing method for simulating and researching permeability of deep coal bed methane |
| CN112504936B (en) * | 2020-11-30 | 2021-12-03 | 中国地质大学（北京） | Testing device and testing method for simulating and researching permeability of deep coal bed methane |
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