CN105334090B - A kind of preparation method of the group of payzone containing coal pressure break object mould sample - Google Patents
A kind of preparation method of the group of payzone containing coal pressure break object mould sample Download PDFInfo
- Publication number
- CN105334090B CN105334090B CN201510733474.1A CN201510733474A CN105334090B CN 105334090 B CN105334090 B CN 105334090B CN 201510733474 A CN201510733474 A CN 201510733474A CN 105334090 B CN105334090 B CN 105334090B
- Authority
- CN
- China
- Prior art keywords
- payzone
- coal
- group
- rock
- containing coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of preparation methods of the group of payzone containing coal pressure break object mould sample, include the following steps according to sequencing：Analysis institute the group of payzone containing coal to be simulated feature, selection prepared product mould sample coal petrography and rock the coal petrography appeared and rock are processed by the identical cuboid thin plate of size according to the lithologic character of each rock sample in the reality group of payzone containing coal；Simulation wellbore, and the cementation simulation wellbore hole in simulation wellbore are drilled through on rock thin plate；Using the rock thin plate of cementation simulation wellbore hole as middle layer, and distinguish cementation coal petrography thin plate in the both sides of rock thin plate, forms the assembly of payzone containing coal；Selection wrapping layer is poured to containing coal payzone assembly progress outside, forms the group pressure break object mould sample of payzone containing coal.The preparation method of the present invention can simulate the layering sample that different lithology combines in the group of payzone containing coal can more accurately simulate the petrophysical properties such as coal rock cleat, intrinsic fracture and the hydraulic fracture of true reservoir compared to artificial layering sample.
Description
Technical field
The invention belongs to rock sample preparing technical fields, and in particular to a kind of preparation side of the group of payzone containing coal pressure break object mould sample
Method.
Background technology
Coal bed gas field of the China based on Ordos Basin it is widely distributed coal bed gas, tight gas and the shale containing coal measures
Gas, tolerance is abundant, and potentiality to be exploited is huge.Since the thickness change in coal seam is big, the number of plies is more, shale gas, the tight gas of interlayer development
Have the characteristics that continuously the condition of mechanical delamination pressure break to be not achieved, therefore, it is difficult to individually exploit at hiding, coexisting in area with coal bed gas
Coal bed gas." 13 " propose coal bed gas combining exploitation with the shale gas on periphery and tight gas, i.e. three gas conjunction is adopted, and sliding sleeve is implemented
Continuous multilayer hydraulic fracturing renovation technique, and then the unconventional resource of comprehensive exploitation.
In multilayered reservoir combination fracturing recovery process, the vertical spreading range of hydraulic fracture is to need emphasis to examine in FRACTURING DESIGN
One of factor of worry, it affects the efficiency of hydraulic fracturing to a certain extent, also determines the success or failure of fracturing work.It is testing
Interior by layered medium carry out true triaxial hydraulic fracturing simulated experiment, be understanding hydraulic fracture it is vertical wear layer propagation law and
The important means of the unconventional resource of Efficient Development.Currently, the layering sample generally use concrete et al. prepared in laboratory
Lithogenesis core is process, however the layering sample prepared in this way compared with the actual reservoir of underground there are notable difference,
In addition there are a great differences compared with natural rock sample for its mechanical property, and the intrinsic fracture property of manual simulation is compared with true core
There is also a great differences, therefore, the true physical property situation of rock cannot be reflected using current method.
Application publication number is that the patent of invention of CN104034563A discloses a kind of preparation of joint property shale artificial cores
Method, the artificial cores simulate laminated slate using cement and quartz sand, and intrinsic fracture is simulated by adding oatmeal and a scrap of paper,
Interlayer difference is simulated by coating lubricating oil between the layers and the proportioning for changing interlayer different component.It is such to use coagulation
The method of soil sample simulation layering sample cannot effectively in simulation rock stratum development intrinsic fracture property, such as coal seam hugger or page
Rock stratum is managed, can not accurate simulation layering sample interlayer physical difference.
Invention content
To solve problems of the prior art, the present invention provides a kind of preparation of the group of payzone containing coal pressure break object mould sample
Method, its object is to：The group pressure break object mould sample of payzone containing coal is prepared using natural rock, with more preferable simulation multilayer dielectricity
Interlayer physical difference truly reflects the property of the feature and rock mechanics of intrinsic fracture in each rock stratum.
To achieve the above object, the technical solution adopted by the present invention is：A kind of system of the group of payzone containing coal pressure break object mould sample
Preparation Method includes the following steps according to sequencing：
Step 1：Analysis institute the group of payzone containing coal to be simulated feature, selection prepared product mould sample coal petrography and rock, root
Factually in border payzone containing coal group each rock sample lithologic character, it is thin that the coal petrography appeared and rock are processed into the identical cuboid of size
Plate；
Step 2：Simulation wellbore, and the cementation simulation wellbore hole in simulation wellbore are drilled through on rock thin plate；
Step 3：Using the rock thin plate of cementation simulation wellbore hole as middle layer, and glued respectively in the both sides of rock thin plate
Gu coal petrography thin plate forms the assembly of payzone containing coal；
Step 4：Selection wrapping layer is poured to containing coal payzone assembly progress outside, forms the group pressure break object mould of payzone containing coal
Sample.
Preferably, in the step 1, the rock that selects is shale, one kind in sandstone and limestone.Object mould sample takes
From with outcropping rock similar in the mechanical properties of rock of simulated formation location.
In any of the above-described scheme preferably, the feature of the rock includes intrinsic fracture occurrence, bed plane occurrence, layer
The spatial relationship in reason face and stress direction in situ.Bed plane, the end natural plane of weakness such as hugger and face cleat can be developed in coal petrography, led to
Normal bed plane is parallel with lithology interface, face cleat and end hugger is vertical with bed plane or friendship, these planes of weakness developed exist suddenly
Can spatially complete a business transaction into it is solid netted, to Rock and coal cutting at a series of rhomboid substrate block, therefore simulate thin plate add
During work, the natural fissure morphological feature for fully considering formation at target locations is needed.
In any of the above-described scheme preferably, in the step 1, the size of cuboid thin plate is 100mm × 300mm
× 300mm, wherein wide face is parallel to bed plane.Use large-scale rock cutter secondary process cuboid thin plate.Bed plane is shadow
An important factor for ringing hydraulic fracture propagation law, if the occurrence of bed plane cannot be simulated correctly, will seriously affect simulated experiment
As a result accuracy and reliability.If big tectonic movement does not occur for the stratum later stage, according to the characteristic of stratum sequential aggradation, layer
The interface of reason face and rock stratum answers parallel depositions.If using wide face as the interface of coal petrography and rock, wide face is parallel to stratification
Face, since wide face is as interface, the area of coal petrography and rock contact is larger, and hydraulic fracture extended area is larger, crack extension
More fully, it more tallies with the actual situation, contributes to the fracture simulation of the group of payzone containing coal to test, error is smaller, as a result more really may be used
It leans on；If using leptoprosopy as the interface of coal petrography and rock, leptoprosopy is parallel to bed plane, since leptoprosopy is as interface, coal petrography
Smaller with the area of rock contact, hydraulic fracture extended area is smaller, and crack extension is hindered, is unfavorable for the group of payzone containing coal
Fracture simulation is tested, and error is larger, experimental result distortion.
In any of the above-described scheme preferably, the coal petrography thin plate is two pieces, and the rock thin plate is one piece.
In any of the above-described scheme preferably, it in the step 2, is drilled through on the leptoprosopy center of rock thin plate
Simulate wellbore.Selection intensity is larger, crack agensis rock thin plate.
In any of the above-described scheme preferably, a diameter of 20mm, the length 160-180mm of the simulation wellbore.
In any of the above-described scheme preferably, the internal diameter of the simulation wellbore hole is 6mm, outer diameter 16mm, length are
180-200mm。
In any of the above-described scheme preferably, the reserved Open-Hole Section in the simulation wellbore lower end is 30-50mm, the mould
What quasi- wellbore upper end was reserved is not 50-70mm by the simulation wellbore hole of cementation.
In any of the above-described scheme preferably, in the step 2, simulation wellbore hole is adhered into simulation using AB silica gel
In wellbore, the cementation time is 8-10h.
In any of the above-described scheme preferably, in the step 3, the combination of payzone containing coal is coal petrography-shale-coal
Rock combination, coal petrography-sandstone-coal petrography combination, coal petrography-limestone-coal petrography combination.
In any of the above-described scheme preferably, coal petrography thin plate is adhered to the wide face of rock thin plate both sides using AB silica gel
On, the cementation time is 10-15h.Coal petrography thin plate and rock thin plate are subjected to cementation according to the pressure break mode of the group of payzone containing coal.Cementation
In the process, an appropriate weight is placed above the assembly of payzone containing coal, pressure is applied to it, so that coal petrography thin plate and rock thin plate
Between reach good anchoring effect.
In any of the above-described scheme preferably, the assembly of payzone containing coal is square, and its side length is 300mm.
In any of the above-described scheme preferably, in the step 4, wrapping layer is mortar, thickness 50-70mm.Packet
The material of covering layer should select with substance similar in all material property, to prevent, Material property differences are excessive and cause result inclined
Difference.It needs uniformly to be wrapped up containing coal payzone assembly.The assembly of payzone containing coal needs in casting process to object mould sample
Placement direction indicated, to apply confining pressure in later experiments.
In any of the above-described scheme preferably, the mortar is by cement and quartz sand according to 1:1 proportioning stirring is made,
Mixing time is 10-15min.
In any of the above-described scheme preferably, after the outside of the assembly of payzone containing coal pours, 15-20 is spontaneously dried
It, the intensity of wrapping layer is higher and uniform at this time.
In any of the above-described scheme preferably, the group of payzone containing the coal pressure break object mould sample is square, its side length is
400-440mm。
Fracturing experiments use the large scale true triaxial simulation experiment system of China University Of Petroleum Beijing's independent development.In dummy level
When well pressure break exploits the group of payzone containing coal, overburden pressure (σv) apply along perpendicular to roch layer interface direction, maximum horizontal
Stress (σH) along be parallel to roch layer interface direction apply, minimum level crustal stress (σh) apply along pit shaft direction.For ease of
The geometric shape that hydraulic fracture extension is observed after fracturing experiments, adds a certain amount of fluorescent powder as crack in fracturing fluid
Tracer, to obtain good Crack Monitoring effect.
The preparation method of the group pressure break object mould sample of payzone containing coal of the present invention, can simulate different lithology group in the group of payzone containing coal
The layering sample of conjunction, compared to artificial layering sample, can more accurately simulate the coal rock cleat of true reservoir, intrinsic fracture and
The petrophysical properties such as hydraulic fracture.Since coal seam is more crisp and is easily broken, fracture development, intensity is relatively low, therefore by non-
Borehole simulation well track in coal rock layer can reduce the risk of borehole well instability.Using first fixed pit shaft, then thin plate combination is carried out,
The method for finally pouring wrapping layer to the assembly of payzone containing coal both can guarantee that simulation wellbore hole finally occupy the center of simulation sample,
Prevented also from boring damage rock stratum interface after the completion of package and crack coal petrography, while keeping each surface of simulation sample flat
Whole rule prevents coal petrography to be subject to crushing in confining pressure loading procedure.By pouring wrapping layer to containing coal payzone assembly, it can be ensured that three
To crustal stress uniform load, hydraulic fracture is vertical to carry out true triaxial hydraulic fracturing physical simulation experiment and accurate understanding propagates through
Expanded configuration in journey is laid a good foundation.
Description of the drawings
Fig. 1 is the preparation of a preferred embodiment of the preparation method of the group of payzone containing coal pressure break object mould sample according to the invention
Flow chart；
Fig. 2 is containing for the embodiment illustrated in fig. 1 of the preparation method of the group of payzone containing coal pressure break object mould sample according to the invention
The structural schematic diagram of coal payzone group pressure break object mould sample；
Fig. 3 is the coal of the embodiment illustrated in fig. 1 of the preparation method of the group of payzone containing coal pressure break object mould sample according to the invention
The form schematic diagram of hydraulic fracture after rock-shale-coal petrography composite mold sample pressure break；
Fig. 4 is the coal of the embodiment illustrated in fig. 1 of the preparation method of the group of payzone containing coal pressure break object mould sample according to the invention
The form schematic diagram of hydraulic fracture after rock-sandstone-coal petrography composite mold sample pressure break；
Fig. 5 is the coal of the embodiment illustrated in fig. 1 of the preparation method of the group of payzone containing coal pressure break object mould sample according to the invention
The form schematic diagram of hydraulic fracture after rock-limestone-coal petrography composite mold sample pressure break.
Explanation is marked in figure：1- rock thin plates, 2- coal petrography thin plates, 3- simulate wellbore, 4- simulation wellbore holes, 5- wrapping layers, 6-
Wide face, 7- leptoprosopy, 8- Open-Hole Sections, 9- bed planes, 10- face cleats, the ends 11- hugger, 12- hydraulic fractures, 13- fracturing fluids.
Specific implementation mode
In order to be further understood that the invention content of the present invention, the present invention is elaborated below in conjunction with specific embodiment.
Embodiment one：
As shown in Figure 1, an embodiment of the preparation method of the group of payzone containing coal pressure break object mould sample according to the invention, is pressed
Include the following steps according to sequencing：
Step 1：Analysis institute the group of payzone containing coal to be simulated feature, selection prepared product mould sample coal petrography and rock, root
Factually in border payzone containing coal group each rock sample lithologic character, it is thin that the coal petrography appeared and rock are processed into the identical cuboid of size
Plate；
Step 2：Simulation wellbore 3, and the cementation simulation wellbore hole 4 in simulation wellbore 3 are drilled through on rock thin plate 1；
Step 3：It regard the rock thin plate 1 of cementation simulation wellbore hole 4 as middle layer, and distinguishes in the both sides of rock thin plate 1
Cementation coal petrography thin plate 2 forms the assembly of payzone containing coal；
Step 4：Selection wrapping layer 5 is poured to containing coal payzone assembly progress outside, forms the group pressure break object mould of payzone containing coal
Sample.
The natural coal petrography that the present embodiment selects Chinese Eastern Margin of Ordos Basin to face emerging area is appeared appears with natural shale,
Prepare coal petrography-shale-coal petrography combination fracturing object mould sample, propagation behavior of the research hydraulic fracture in the object mould sample.
The structure of the prepared group pressure break object mould sample of payzone containing coal is as shown in Figure 2.The feature of the rock includes natural
Crack figure, bed plane occurrence, bed plane and stress direction in situ spatial relationship.Bed plane 9 can be developed in coal petrography, end is cut
The natural plane of weakness such as 11 and face cleat 10 is managed, usual bed plane 9 is parallel with lithology interface, face cleat 10 and holds hugger 11 and stratification
Face 9 it is vertical or it is steep hand over, these planes of weakness developed can spatially complete a business transaction into it is solid netted, to Rock and coal cutting at a series of
Rhomboid substrate block need to fully consider that the natural fissure form of formation at target locations is special therefore in simulating thin plate process
Sign.
In the step 1, using large-scale rock cutter secondary process cuboid thin plate, the size of cuboid thin plate is
100mm × 300mm × 300mm, wherein wide face 6 is parallel to bed plane 9.Coal petrography thin plate 2 is two pieces, and rock thin plate 1 is one piece.
In the step 2, selection intensity is larger, crack agensis rock thin plate 1, in the leptoprosopy 7 of rock thin plate 1
Simulation wellbore 3 is drilled through on heart position.A diameter of 20mm, the length 160mm of the simulation wellbore 3；The simulation wellbore hole 4 it is interior
Diameter is 6mm, outer diameter 16mm, length 180mm；The reserved Open-Hole Section 8 in 3 lower end of the simulation wellbore is 30mm, the simulation
What 3 upper end of wellbore was reserved is not 50mm by the simulation wellbore hole of cementation 4.Simulation wellbore hole 4 is adhered into simulation wellbore 3 using AB silica gel
Interior, the cementation time is 8h.
In the step 3, coal petrography thin plate 2 is adhered on the wide face 6 of 1 both sides of rock thin plate using AB silica gel, when cementation
Between be 10h.Coal petrography thin plate and rock thin plate are subjected to cementation according to the pressure break mode of the group of payzone containing coal.During cementation, containing
An appropriate weight is placed above coal payzone assembly, pressure is applied to it, so as to reach good between coal petrography thin plate and rock thin plate
Anchoring effect.The assembly of payzone containing coal is square, and its side length is 300mm.
In the step 4, wrapping layer 5 is mortar, thickness 50mm.The material of wrapping layer should select and all material
Substance similar in property, Material property differences are excessive and cause result error to prevent, and need to carry out to containing coal payzone assembly
Uniformly package.The assembly of payzone containing coal needs the placement direction to object mould sample to indicate, so as to the later stage in casting process
Apply confining pressure in experiment.The mortar is by cement and quartz sand according to 1:1 proportioning stirring is made, mixing time 10min.Institute
State the assembly of payzone containing coal outside pour after, spontaneously dry 15 days, the intensity of wrapping layer is higher and uniform at this time.It is described to contain coal
Payzone group pressure break object mould sample is square, and its side length is 400mm.
Fracturing experiments use the large scale true triaxial simulation experiment system of China University Of Petroleum Beijing's independent development.In dummy level
When well pressure break exploits the group of payzone containing coal, overburden pressure (σv) apply along perpendicular to roch layer interface direction, maximum horizontal
Stress (σH) along be parallel to roch layer interface direction apply, minimum level crustal stress (σh) apply along pit shaft direction.For ease of
The geometric shape that hydraulic fracture 12 extends is observed after fracturing experiments, and a certain amount of fluorescent powder conduct is added in fracturing fluid 13
Crack tracer, to obtain good Crack Monitoring effect.Hydraulic fracture after coal petrography-shale-coal petrography composite mold sample pressure break
Form it is as shown in Figure 3.
The preparation method of the group pressure break object mould sample of payzone containing coal of the present embodiment, can simulate different lithology in the group of payzone containing coal
The layering sample of combination can more accurately simulate coal rock cleat, the intrinsic fracture of true reservoir compared to artificial layering sample
With the petrophysical properties such as hydraulic fracture.Since coal seam is more crisp and is easily broken, fracture development, intensity is relatively low, thus by
Borehole simulation well track in non-coal rock layer, can reduce the risk of borehole well instability.Using first fixed pit shaft, then carry out thin plate group
It closes, the method that wrapping layer finally is poured to the assembly of payzone containing coal, both can guarantee that simulation wellbore hole finally occupy in simulation sample
The heart prevented also from boring damage rock stratum interface after the completion of package and crack coal petrography, while making each surface of simulation sample
All smooth rule, prevents coal petrography to be subject to crushing in confining pressure loading procedure.It, can be true by pouring wrapping layer to containing coal payzone assembly
Three-dimensional crustal stress uniform load is protected, to carry out true triaxial hydraulic fracturing physical simulation experiment and the accurate understanding vertical expansion of hydraulic fracture
Expanded configuration during exhibition is laid a good foundation.
Embodiment two：
Another embodiment of the preparation method of the group of payzone containing coal pressure break object mould sample according to the invention, preparation process,
Principle and advantageous effect etc. are identical as embodiment one, unlike：
It selects the natural coal petrography that Chinese Eastern Margin of Ordos Basin faces emerging area to appear to appear with natural sandstone, prepares coal
Rock-sandstone-coal petrography combination fracturing object mould sample.A diameter of 20mm, the length 170mm of the simulation wellbore；The simulation well
Cylinder internal diameter be 6mm, outer diameter 16mm, length 190mm；The reserved Open-Hole Section in the simulation wellbore lower end is 40mm, described
What simulation wellbore upper end was reserved is not 60mm by the simulation wellbore hole of cementation.Simulation wellbore hole is adhered into simulation wellbore using AB silica gel
Interior, the cementation time is 9h.Coal petrography thin plate is adhered on the wide face of rock thin plate both sides using AB silica gel, the cementation time is 12h.
Wrapping layer is mortar, thickness 60mm.The mortar is by cement and quartz sand according to 1:1 proportioning stirring is made, when stirring
Between be 12min.After the outside of the assembly of payzone containing coal pours, spontaneously dry 18 days, at this time the intensity of wrapping layer it is higher and
Uniformly.The group of payzone containing the coal pressure break object mould sample is square, and its side length is 420mm.Coal petrography-sandstone-coal petrography composite mold
The form of hydraulic fracture is as shown in Figure 4 after sample pressure break.
Embodiment three：
Another embodiment of the preparation method of the group of payzone containing coal pressure break object mould sample according to the invention, preparation process,
Principle and advantageous effect etc. are identical as embodiment one, unlike：
It selects the natural coal petrography that Chinese Eastern Margin of Ordos Basin faces emerging area to appear to appear with natural limestone, prepares coal
Rock-limestone-coal petrography combination fracturing object mould sample.A diameter of 20mm, the length 180mm of the simulation wellbore；The simulation well
Cylinder internal diameter be 6mm, outer diameter 16mm, length 200mm；The reserved Open-Hole Section in the simulation wellbore lower end is 50mm, described
What simulation wellbore upper end was reserved is not 70mm by the simulation wellbore hole of cementation.Simulation wellbore hole is adhered into simulation wellbore using AB silica gel
Interior, the cementation time is 10h.Coal petrography thin plate is adhered on the wide face of rock thin plate both sides using AB silica gel, the cementation time is
15h.Wrapping layer is mortar, thickness 70mm.The mortar is by cement and quartz sand according to 1:1 proportioning stirring is made, and stirs
It is 15min to mix the time.After the outside of the assembly of payzone containing coal pours, spontaneously dry 20 days, at this time the intensity of wrapping layer compared with
It is high and uniform.The group of payzone containing the coal pressure break object mould sample is square, and its side length is 440mm.Coal petrography-limestone-coal petrography combination
The form of hydraulic fracture is as shown in Figure 5 after object mould sample pressure break.
It will be apparent to those skilled in the art that the preparation method of the group pressure break object mould sample of payzone containing coal of the present invention includes upper
State the arbitrary combination of the invention content and each section shown by specific embodiment part and attached drawing of description of the invention, limit
It is described one by one in length and for each scheme for keeping specification concise without constituting these combinations.It is all the present invention spirit and
Within principle, any modification, equivalent substitution, improvement and etc. done should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of preparation method of the group of payzone containing coal pressure break object mould sample, includes the following steps according to sequencing：
Step 1：Analysis institute the group of payzone containing coal to be simulated feature, selection prepared product mould sample coal petrography and rock, according to reality
The coal petrography appeared and rock are processed into the identical cuboid thin plate of size by the lithologic character of each rock sample in the group of payzone containing coal of border；
Step 2：Simulation wellbore, and the cementation simulation wellbore hole in simulation wellbore are drilled through on rock thin plate；
Step 3：Using the rock thin plate of cementation simulation wellbore hole as middle layer, and distinguish cementation coal in the both sides of rock thin plate
Rock thin plate forms the assembly of payzone containing coal；
Step 4：Selection wrapping layer is poured to containing coal payzone assembly progress outside, forms the group pressure break object mould sample of payzone containing coal；
In the step 1, the rock that selects is shale, one kind in sandstone and limestone；The wide face of the cuboid thin plate is parallel
In bed plane；
In the step 2, simulation wellbore is drilled through on the leptoprosopy center of rock thin plate；
In the step 3, the combination of payzone containing coal is coal petrography-shale-coal petrography combination, coal petrography-sandstone-coal petrography combination, coal
Rock-limestone-coal petrography combination；Coal petrography thin plate is adhered on the wide face of rock thin plate both sides using AB silica gel, the cementation time is 10-
15h；
When simulation water horizontal well pressure break exploits the group of payzone containing coal, overburden pressure (σv) applied along perpendicular to roch layer interface direction
Add, maximum horizontal crustal stress (σH) along be parallel to roch layer interface direction apply, minimum level crustal stress (σh) along pit shaft direction
Apply.
2. the preparation method of the group of payzone containing coal pressure break object mould sample as described in claim 1, it is characterised in that：The rock
Feature include intrinsic fracture occurrence, bed plane occurrence, bed plane and stress direction in situ spatial relationship.
3. the preparation method of the group of payzone containing coal pressure break object mould sample as described in claim 1, it is characterised in that：The step 1
In, the size of cuboid thin plate is 100mm × 300mm × 300mm.
4. the preparation method of the group of payzone containing coal pressure break object mould sample as claimed in claim 3, it is characterised in that：The coal petrography is thin
Plate is two pieces, and the rock thin plate is one piece.
5. the preparation method of the group of payzone containing coal pressure break object mould sample as described in claim 1, it is characterised in that：The simulation well
A diameter of 20mm, the length 160-180mm of eye.
6. the preparation method of the group of payzone containing coal pressure break object mould sample as claimed in claim 5, it is characterised in that：The simulation well
Cylinder internal diameter be 6mm, outer diameter 16mm, length 180-200mm.
7. the preparation method of the group of payzone containing coal pressure break object mould sample as claimed in claim 6, it is characterised in that：The simulation well
It is 30-50mm to hold reserved Open-Hole Section now, and what the simulation wellbore upper end was reserved is not 50- by the simulation wellbore hole of cementation
70mm。
8. the preparation method of the group of payzone containing coal pressure break object mould sample as described in claim 1, it is characterised in that：The step 2
In, simulation wellbore hole is adhered in simulation wellbore using AB silica gel, the cementation time is 8-10h.
9. the preparation method of the group of payzone containing coal pressure break object mould sample as described in claim 1, it is characterised in that：It is described to be produced containing coal
Layer assembly is square, and its side length is 300mm.
10. the preparation method of the group of payzone containing coal pressure break object mould sample as described in claim 1, it is characterised in that：The step
In four, wrapping layer is mortar, thickness 50-70mm.
11. the preparation method of the group of payzone containing coal pressure break object mould sample as claimed in claim 10, it is characterised in that：The mortar
By cement and quartz sand according to 1:1 proportioning stirring is made, mixing time 10-15min.
12. the preparation method of the group of payzone containing coal pressure break object mould sample as claimed in claim 10, it is characterised in that：It is described to contain coal
After the outside of payzone assembly pours, spontaneously dry 15-20 days.
13. the preparation method of the group of payzone containing coal pressure break object mould sample as claimed in claim 10, it is characterised in that：It is described to contain coal
Payzone group pressure break object mould sample is square, and its side length is 400-440mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510733474.1A CN105334090B (en) | 2015-11-02 | 2015-11-02 | A kind of preparation method of the group of payzone containing coal pressure break object mould sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510733474.1A CN105334090B (en) | 2015-11-02 | 2015-11-02 | A kind of preparation method of the group of payzone containing coal pressure break object mould sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105334090A CN105334090A (en) | 2016-02-17 |
| CN105334090B true CN105334090B (en) | 2018-07-17 |
Family
ID=55284742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510733474.1A Active CN105334090B (en) | 2015-11-02 | 2015-11-02 | A kind of preparation method of the group of payzone containing coal pressure break object mould sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105334090B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869895A (en) * | 2017-04-07 | 2017-06-20 | 中国石油大学(华东) | A kind of thing mould preparation method of indoor coal petrography hydraulic fracturing cement sheath destruction |
| CN107420096B (en) * | 2017-08-15 | 2020-06-26 | 中国石油大学(北京) | Physical simulation experiment device and method for horizontal well multistage hydraulic layer-by-layer fracturing |
| CN108518209B (en) * | 2018-02-14 | 2020-06-26 | 中联煤层气有限责任公司 | Design method for coal-series production layer combined well hole track azimuth angle considering transition zone |
| CN109162709B (en) * | 2018-09-05 | 2020-12-25 | 中国石油大学(北京) | Preparation method and application of physical simulation sample of hole type carbonate reservoir |
| CN109611085B (en) * | 2018-12-03 | 2022-02-08 | 河南理工大学 | Hydraulic fracturing coal-series reservoir fracture extension form simulation device and simulation method thereof |
| CN109946147B (en) * | 2019-04-03 | 2020-03-10 | 中国矿业大学 | Preparation method of coal-series composite reservoir fracturing physical simulation test piece |
| CN110044671B (en) * | 2019-04-11 | 2020-07-24 | 武汉理工大学 | Coal rock sample for hydraulic fracturing experiment and manufacturing method thereof |
| CN110220756B (en) * | 2019-05-20 | 2021-03-09 | 中国石油大学(北京) | Coal-series shale physical model test piece and preparation method thereof |
| CN110907247B (en) * | 2019-12-09 | 2022-06-03 | 陕西延长石油(集团)有限责任公司研究院 | Preparation method of unconventional natural gas well fracturing physical simulation sample |
| CN111323307B (en) * | 2020-03-09 | 2021-06-25 | 山东科技大学 | Multi-coal-seam combined fracturing, pressure relief and extraction integrated test method |
| CN112761584B (en) * | 2021-01-14 | 2022-03-18 | 中国矿业大学 | Simulation sample manufacturing method and device for hydraulic fracturing test of broken soft coal seam |
| CN113218770B (en) * | 2021-03-12 | 2022-07-01 | 西南石油大学 | Multi-lithologic fracturing crack test method |
| CN113624583B (en) * | 2021-08-02 | 2023-10-20 | 中海石油(中国)有限公司 | Experimental device for loose sandstone sample preparation and fracturing simulation integration |
| CN114279800B (en) * | 2021-12-10 | 2023-07-14 | 太原理工大学 | Preparation method of coal-rock combination body model sample considering interlayer interface property |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279131A (en) * | 2011-07-18 | 2011-12-14 | 中国石油大学(北京) | Simulation experiment method of coal seam hydraulic fracture |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563993A (en) * | 2013-10-11 | 2015-04-29 | 中国石油大学(北京) | Staged fracturing or synchronous fracturing simulation experiment method for shale horizontal well |
| CN103883302A (en) * | 2014-03-31 | 2014-06-25 | 中国矿业大学 | Method for manufacturing physical simulation test parts of coal-bed gas well hydraulic fractures |
-
2015
- 2015-11-02 CN CN201510733474.1A patent/CN105334090B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279131A (en) * | 2011-07-18 | 2011-12-14 | 中国石油大学(北京) | Simulation experiment method of coal seam hydraulic fracture |
Non-Patent Citations (1)
| Title |
|---|
| 《煤层水力压裂裂缝扩展规律及瓦斯抽采钻孔优化研究》;康向涛;《中国博士学位论文全文数据库》;20150515(第5期);第17、66-80页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105334090A (en) | 2016-02-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105334090B (en) | A kind of preparation method of the group of payzone containing coal pressure break object mould sample | |
| CN104100252B (en) | A kind of horizontal well multi-stage water power pressure break physical simulating method | |
| CN104060976B (en) | Method for physically simulating sectional hydrofracture of different well types of perforated well shafts | |
| CN105626027B (en) | A kind of physical simulating method of coal petrography directional well sand fracturing | |
| CN104563993A (en) | Staged fracturing or synchronous fracturing simulation experiment method for shale horizontal well | |
| CN110907247B (en) | Preparation method of unconventional natural gas well fracturing physical simulation sample | |
| CN109946147B (en) | Preparation method of coal-series composite reservoir fracturing physical simulation test piece | |
| Lu et al. | Engineering geological characteristics and the hydraulic fracture propagation mechanism of the sand-shale interbedded formation in the Xu5 reservoir | |
| Wang et al. | Gas seepage around bedded salt cavern gas storage | |
| CN106198181B (en) | A kind of fractured horizontal well physical analogy sample and preparation method thereof | |
| CN104747182A (en) | Crack flow conductivity testing method | |
| Wang et al. | Cement sheath integrity during hydraulic fracturing: An integrated modeling approach | |
| CN108518209B (en) | Design method for coal-series production layer combined well hole track azimuth angle considering transition zone | |
| CN109359376A (en) | Hydraulically created fracture sentences knowledge method in the extension of shale reservoir intrinsic fracture interface | |
| Guo et al. | A novel" soundless cracking agent fracturing" for shale gas reservoir stimulation | |
| Zhao et al. | Experimental research on hydraulic fracture propagation in group of thin coal seams | |
| Yang et al. | Influence of reservoirs/interlayers thickness on hydraulic fracture propagation laws in low-permeability layered rocks | |
| CN113027441B (en) | Optimal design method for sand fracturing of hydraulic fracture full support | |
| Xu et al. | Simulation of fracture propagation law in fractured shale gas reservoirs under temporary plugging and diversion fracturing | |
| Ren et al. | Experimental and numerical simulation study of hydraulic fracture propagation during coalbed methane development | |
| Yi et al. | What do hydraulic fractures look like in different types of reservoirs: Implications from a series of large-scale polyaxial hydraulic fracturing experiments from conventional to unconventional | |
| Li et al. | Rock mechanical properties of deep shale-gas reservior and their effects on reservoir stimulation | |
| Zhu et al. | Feasibility analysis on the pilot test of acid fracturing for carbonate reservoirs in Halfaya Oilfield, Iraq | |
| Fu et al. | The simulation method research of hydraulic fracture initiation with perforations | |
| CN110082176A (en) | The production method and stratification shale target of the stratification shale target of pre- board plug type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |