CN104007463B - A kind of artificial shale physical model and preparation method thereof and application - Google Patents
A kind of artificial shale physical model and preparation method thereof and application Download PDFInfo
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- CN104007463B CN104007463B CN201410255392.6A CN201410255392A CN104007463B CN 104007463 B CN104007463 B CN 104007463B CN 201410255392 A CN201410255392 A CN 201410255392A CN 104007463 B CN104007463 B CN 104007463B
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Abstract
The invention provides a kind of artificial shale physical model and preparation method thereof and application.The manufacture method of artificial shale physical model includes: mixed homogeneously with stone powder by binding agent, described binding agent is epoxy resin tackifier, stone powder includes quartz 10% 70%, Kaolin 10% 80%, organic carbon dust 4% 25%, calcite 3% 10%, and binder dosage accounts for the 5%～35% of stone powder gross mass；Being packed in mould by the mixture of binding agent Yu stone powder, the level on pressure device that is placed on is fixed, adjust vertical direction pressure to 80～300MPa, fixed placement more than 24 hours, primary solidification；The demoulding, is dried the shale samples of primary solidification in 30～50 DEG C, prepares artificial shale physical model.Obtained artificial shale physical model is fine and close, has particular bore porosity and density, has anisotropic character, and have transverse isotropy feature, can be the contrast of actual shale reservoir study result, checking offer reliable basis.
Description
Technical field
The present invention relates to a kind of artificial shale physical model and preparation method thereof and application, belong to oil-gas exploration and exploitation
Geophysical research field.
Background technology
Shale be a kind of by particle diameter less than the particulate chip of 0.004mm, clay mineral, organic matter etc. form there is lamina
The sedimentary rock constructed with the laminated structure of shale, its complicated component, in addition to clay mineral, possibly together with many detrital mineral and authigenic minerals etc., and
Different regions differ greatly.Shale is widely distributed in nature, and in sedimentary rock, about more than 60% is shale.Common page
Rock type has black shale, culm, oil shale, siliceous shale, irony shale, calcareous shale, arenaceous shale etc..Generally feelings
Under condition, shale porosity is between 2～15%, and permeability is less than 1mD, is typical low porosity and low permeability reservoir.
Shale gas refers to that theme is positioned in dark-coloured mud shale or high-carbon mud shale, with absorption or free state for being primarily present
The gas accumulation of mode.In shale gas reservoir, natural gas exists in the powder shale of sandwich-like, silty even shale
In stratum, it is the result assembled nearby in source bed after natural gas generates, shows as typical original place Reservoir model.Shale
The exploration of gas, R and D are always the study hotspot of this area.Wherein, seismic physical model and indoor ultrasonic is utilized to adopt
Collecting system carries out laboratory collection, process, and then the seismic response features of research particular model, has become as reservoir rock physics
The important technology analyzed, the exploration and development for shale oil gas reservoir has important directive significance.
In seismic physical modeling experiment, the making of the artificial shale physical model simulating natural shale components and structure is one
Item key technology, its model accuracy is directly connected to the success or failure that simulation experiment is analyzed, for simulation specific oil, natural gas
Reservoir has important researching value and meaning.But, the research to artificial shale physical model is risen in nearly 10 years, in theory
Documents and materials in terms of research are relatively fewer, can more successfully produce this artificial Shale Media up till now at laboratory
Till the world do not have all the time, corresponding document is the most less.
Shale has laminated or slice-like layers reason, has obvious velocity anisotropy；Meanwhile, shale is also a kind of horizontal
Isotropic medium, i.e. TI medium；Additionally, due to the reason of development technique, only those low Poisson's ratio, high elastic modulus, richnesses
The main target of shale gas exploration it is only containing organic fragility shale.It is special that artificial shale physical model also must have these
Property, could accurately be simulated experimental analysis.
In theory, the making of manual simulation TI medium would generally use lamellar structure material to carry out boning or pressing, this case
Inventor the most once adopted in R&D process and carried out manufacturing artificial shale physical model in this way.Wherein, due to paper material
Good water absorption, is easily saturated, and has again layering, so selecting newspaper to simulate shale, after using binding agent to be impregnated with newspaper
Multilamellar newspaper lamination is made artificial shale physical model, and made artificial shale samples is Method in Transverse Isotropic Medium,
And there is anisotropic character, reach to change the mesh of velocity anisotropy's size also by the composition and consumption changing binding agent
's.But, the artificial shale physical model that this employing newspaper and adhesive lamination make, it does not has hole, it is impossible to carry out not
With oil, the test of gas and water saturation and relatively big with actual shale gap, it is only capable of a kind of simulation means as research TI medium.
Inventor the most once attempts using the sintering process of traditional fabrication artificial rock's physical model in research process
Manufacturing artificial shale physical model.For shale gas reservoir, seimic wave velocity is mainly by holes such as mineral, porosity, cracks
Gap space structure and the impact of organic matter.It is special that inventor have studied structure between the spaces such as the essential mineral composition of shale, porosity
Levy, have employed relevant clay breeze and chip breeze adds a certain proportion of waterglass and pressurizes, toasts, sinters manufacturing artificial page
Rock, made sample also has anisotropic character.But, the subject matter existing for this sintering process is: sintering process becomes
Product rate is relatively low, and broken ratio is more serious；Obtained sample rate is the least, and porosity, permeability are the biggest；If the sintering process later stage wishes
Hope that addition organic composition difficulty is bigger.This kind of method is also difficult to produce the fragility spy with low Poisson's ratio, high elastic modulus
The petrophysical model levied.
In sum, based on studying the exploration for shale gas of shale seismic response and anisotropic character and the weight of exploitation
Want directive significance, how to produce a kind of fine and close, have particular bore porosity and density, have anisotropy and respectively to
Property and feature of enbrittling can the physical model of accurate simulation shale, be that the technology that current this area must solve is difficult
Topic.
Summary of the invention
It is an object of the present invention to provide a kind of fine and close, have particular bore porosity and density, can accurate simulation page
The manufacture method of the shale physical model of rock architectural feature, provides for next step seismic physical model simulation carrying out artificial shale
Available modeling material, contrast, checking for actual shale reservoir study result provide reliable basis, propose one research artificial
The new approaches of shale oil gas reservoir seismic prospecting.
Another object of the present invention is to provide obtained artificial shale physical model.
Another object of the present invention is to provide the application of described artificial shale physical model.
For reaching above-mentioned purpose, on the one hand, the invention provides the manufacture method of a kind of artificial shale physical model, the method
Including step:
Binding agent is mixed homogeneously with stone powder；Wherein, described binding agent is epoxy resin tackifier；Described stone powder includes
Quartz, Kaolin, organic carbon dust and calcite, be in terms of 100% by the gross mass of stone powder, and each stone powder consumption is: quartz 10%-
70%, Kaolin 10%-80%, organic carbon dust 4%-25%, calcite 3%-10%；Described binder dosage accounts for the total matter of stone powder
The 5%～35% of amount；
Being packed in mould by the mixture of binding agent Yu stone powder, the level on pressure device that is placed on is fixed, and adjusts vertical direction
Pressure to 80～300MPa, fixed placement more than 24 hours, primary solidification；
The demoulding, is dried the shale samples of primary solidification in 30～50 DEG C, prepares artificial shale physical model.
In the manufacture method of the artificial shale physical model of the present invention, the main fragility ore deposit used in quartz analogue shale
Clay mineral in thing, Kaolin shale, with the carbonate mine in calcite simulation shale, with in organic carbon simulation shale
Organic matter, adjust the usage ratio of each component, and mix with the epoxy resin tackifier of specified quantitative, cold compaction is for artificial page
Rock physical model.According to the present invention method prepare artificial shale physical model, its have obvious shear wave anisotropy and
Compressional wave anisotropy, and have transverse isotropy feature, and have particular bore porosity and density, has low Poisson's ratio, high-elastic
Property modulus, meets shale Brittleness, it is possible to simulate natural shale exactly, carries out the seismic physical of artificial shale for next step
Modeling provides available modeling material, and then can provide reliably depend on for the contrast of actual shale reservoir study result, checking
According to.
According to specific embodiments of the present invention, in the manufacture method of the artificial shale physical model of the present invention, described stone
Powder Particle Size and sorting can select according to the specific requirement to artificial shale physical model；Porosity to be obtained is bigger
Artificial shale physical model, then select the preferable stone powder of grain sorting, the porosity requirement to artificial shale physical model
Time less, the sorting scope of increase stone powder that can be suitable.In order to as close possible to actual shale, reduce porosity and infiltration
Rate, in the present invention, the particle diameter of stone powder used is 2000 mesh～5000 mesh (referred to herein as crossing 2000 mesh～5000 mesh sieves), generally
Particle diameter is at the stone powder of 2000～4000 mesh.Wherein said organic carbon dust refers to the organic carbon of powder.Each stone powder can be carried out respectively
Ball milling is carried out to meet granularity requirements after ball milling or mixing.
Inventor finds under study for action, and in the present invention, the characteristic of adhesive therefor is for the performance of artificial shale physical model
Having material impact, according to specific embodiments of the present invention, in the present invention, adhesive therefor is epoxy resin tackifier, excellent
Electing epoxide resin AB glue as, its liquid viscosity is 500～3000CPS/25 DEG C, solidifies hardness 70～100ShoreD, shear strength
≥10Mpa.The liquid viscosity of wherein said binding agent refer to binding agent A, B bis-component mixing after uncured time liquid glue
Degree, if A, B bis-component be liquid, it is preferable that the viscosity of two components is the most within the range.Under normal circumstances, use meets
Viscosity of the present invention and the binding agent of solidification hardness requirement, can successfully prepare can simulate according to the method for the present invention
The artificial shale physical model of natural shale.Further, the proportion of currently preferred binding agent is 1.0～1.2g/cm3
(25 DEG C), shrinkage factor≤0.5%.Other performances of binding agent are not done particular/special requirement at such as appearance luster, hardening time etc., but should
Understand, the operating time demand of the present invention should be met hardening time.Meet the binding agent of requirement of the present invention to be purchased and obtain
, such as, described binding agent can be AB bi-component epoxide-resin glue, the most such as, can be YY505A/B (transparent) epoxy
Resin glue etc..When specifically applying, A, B bis-the mixing consumption of component can refer to prior art or according to supplier suggestion i.e.
Can.
Inventor the most also finds, in the manufacture method of the artificial shale physical model of the present invention, by controlling institute
The anisotropy of artificial shale physical model can be controlled, specifically, at described model with binding agent and the mass ratio of stone powder
Enclosing the consumption of the described binding agent of interior minimizing, beneficially (shear wave is each for the anisotropy of the artificial shale physical model obtained by raising
Anisotropy and compressional wave anisotropy).Such as, in the series of experiments of the present invention, by controlling binding agent in the range of described
Consumption accounts for less than the 12% of stone powder gross mass, and can improve the shear wave anisotropy of artificial shale physical model and compressional wave respectively to different
Property is more than 10%.
The anisotropy of the natural shale of part can be higher, may be up to more than 20% even more than 30%.In order to carry further
The anisotropy of the artificial shale physical model made by height, according to the preferred embodiments of the invention, the artificial page of the present invention
In the manufacture method of rock physical model, described stone powder also includes ferrophosphorus powder, be in terms of 100% by the gross mass of stone powder, ferrophosphorus powder
Amount be 3%～30%, granularity is 2000 mesh～5000 mesh.The interpolation of ferrophosphorus powder is favorably improved obtained artificial shale thing
The anisotropy of reason model, but, it is not that the consumption of ferrophosphorus powder is the highest more good.According to the preferred version of the present invention, control phosphorus
Iron powder usage ratio in stone powder is 10%～30%, more preferably 10%～20%.
In a preferred embodiment of the present invention, consisting of of described stone powder: with the gross mass of stone powder for 100%
Meter, quartz 10%-40%, Kaolin 10%-50%, organic carbon dust 4%-25%, calcite 3%-10%, ferrophosphorus powder 10%～
30% is preferably 10%～20%.
According to specific embodiments of the present invention, in the manufacture method of the artificial shale physical model of the present invention, will bonding
Agent is packed in mould with the mixture of stone powder, after being employing filling in the way of entire pressurisation, or can use layering pressurization
Mode.Two kinds of types of feed on the main performance of artificial shale physical model without the biggest impact.The present invention preferably employs layering
Pressuring method, specifically, described layering pressuring method is: the mixture of binding agent Yu stone powder is divided into many parts, first part of dress
Insert in mould, be forced into 1～3MPa after paving, then pour the 2nd part of mixture into, pave pressurization, be repeated in, until adding complete
Portion's mixture；Wherein, controlling the floor height after every part of mixture is paved in a mold is 0.5～2mm.Entire mixture filling is complete
After, then entire pressurisation.
According to specific embodiments of the present invention, in the manufacture method of the artificial shale physical model of the present invention, install viscous
The mould of mixture and stone powder on pressure device during entire pressurisation, pressure be maintained at 80～300MPa fix and reach for more than 24 hours at the beginning of
Step state of cure.According to the method for the present invention, for the artificial shale component determined, pressure in the range of described or high
Or it is low little on the impact of model finished product density.In the manufacture method of the artificial shale physical model of the present invention, pressuring method is cold
Pressure, temperature is less than 30 DEG C and is advisable, and usual room temperature (18～25 DEG C) operates.
It is dried in 30～50 DEG C further after the shale samples demoulding of primary solidification molding, thorough curing molding, can make
Obtain the artificial shale physical model of the present invention.Can carry out as required polishing and repairing outward appearance.
On the other hand, present invention also offers a kind of artificial shale physical model, it is according to said method system of the present invention
Work obtains.The artificial shale physical model of the present invention, its density is 1.6g/cc～2.5g/cc, generally at 1.9g/cc～
2.5g/cc, porosity is 1%～15%；There is anisotropic character (the compressional wave opposite sex, more than 2%, may be up to more than 26%),
And there is transverse isotropy feature, velocity of longitudinal wave is 2000m/s～4000m/s；And its Brittleness also with actual page petrofacies
Symbol, it is possible to simulate natural shale truly.
On the other hand, present invention also offers the application in shale reservoir study of the described artificial shale physical model.
Specifically, it is to apply described artificial shale physical model to carry out shale seismic reservoir wave response and anisotropy simulation study.
In sum, the present invention is according to seismic physical modeling technical characterstic, from actual formation feature and laboratory model system
The relation made is set out, and solves the problem that shale model is likely to occur in design and making, it is provided that one is fine and close, have one
Determine artificial shale physical model of porosity and density and preparation method thereof, the lamina of this technical modelling shale and sheet reason knot
Structure, has structure and these structures structure orientation row of different levels by the artificial shale samples obtained by the selection of its component
Row, obtained artificial shale samples is anisotropic medium；And according to the relation in crack Yu axis of symmetry, may certify that the present invention
Artificial shale material model sample be Method in Transverse Isotropic Medium, i.e. TI medium.Additionally, the artificial shale physics mould of the present invention
Type can the most predictably seismic wave velocity of longitudinal wave in rich organic mud shale rock and shear wave velocity, for the storage of actual shale
The contrast of layer result of study, checking provide reliable basis.
Accompanying drawing explanation
Fig. 1 is the Making programme schematic diagram of the artificial shale physical model of the present invention.
Fig. 2 is the embodiment of the present invention 1 artificial shale physical model shear wave oscillogram.
Fig. 3 is the embodiment of the present invention 1 artificial shale physical model compressional wave oscillogram.
Fig. 4 is the embodiment of the present invention 2 artificial shale physical model compressional wave oscillogram.
Fig. 5 is multiple embodiment sample Young's modulus E curve chart with different axis of symmetry variable angle.
Fig. 6 is multiple embodiment sample Poisson's ratio ν curve chart with different axis of symmetry variable angle.
Fig. 7 is embodiment 8 sample appearance.
Fig. 8 is embodiment 9 sample appearance.
Fig. 9 is comparative example 1 sample appearance.
Detailed description of the invention
In order to the technical characteristic of the present invention, purpose and beneficial effect are more clearly understood from, the existing skill to the present invention
Art scheme carries out described further below, but it is not intended that to the present invention can the restriction of practical range.
Embodiment 1
Present embodiments providing a kind of artificial shale physical model, its raw material composition includes:
Binding agent: YY505 epoxy AB glue (Yancheng one adds one Electron Material Co., Ltd) 50g, its Specifeca tion speeification is such as
Under: YY505A, hyalomucoid, viscosity 1200～1800CPS/25 DEG C；YY505B, faint yellow mucus, viscosity 800～1200CPS/
25℃；Additionally, 25 DEG C of proportion 1.12 ± 0.05g/cm of A liquid3, 25 DEG C of proportion 1.08 ± 0.05g/cm of B liquid3；A, B mixed weight ratio
For 2:1.Solidfied material characteristic: hardness 85 ± 5Shore D, shear strength 34～38Mpa；Shrinkage factor≤0.5%；
Stone powder: the silica flour 200g of 3000 mesh, the Kaolin 200g of 3000 mesh, the calcite 25g of 3000 mesh and 3000 mesh
Organic carbon dust 75g.
The present embodiment additionally provides the manufacture method of above-mentioned artificial shale physical model, concrete Making programme as it is shown in figure 1,
The method comprises the following steps:
Form by above-mentioned raw materials, YY505 epoxy A glue (epoxy resin) is stirred with B glue (firming agent), is bondd
Agent；
Weighing each stone powder, ball milling mixes more than 10 hours, then mixes with binding agent, stirs, obtains mixture；
Steel mould is cleaned up and smears one layer of vaseline at die inside；
Being packed in mould by the mixture of binding agent Yu stone powder, the level on pressure device that is placed on is fixed, and adjusts vertical direction
Pressure is to 260MPa, room temperature fixed placement 48 hours, primary solidification；Then stablize in cavity body of mould 48 hours, the demoulding, take out
Shale samples, puts into 40 DEG C of couveuses and makes it solidify in about 2 days；
Shale samples is taken out, uses sand papering surface so that it is become the most regular cuboid, by sample after having polished
Put into 40 DEG C of baking boxs thoroughly to dry, i.e. obtain the artificial shale physical model (being designated as A4) of the present embodiment.
Embodiment 2
The artificial shale physical model of the present embodiment, its raw material composition includes:
Binding agent: YY505 epoxy AB glue 55g；
Stone powder: the silica flour 200g of 3000 mesh, the Kaolin 200g of 3000 mesh, the calcite 25g of 3000 mesh and 3000 mesh
Organic carbon dust 75g.
The manufacture method of the artificial shale physical model of the present embodiment, compared with Example 1, is to use layering to load, its
His process conditions are with embodiment 1.The concrete operation step of wherein said layering filling is: by binding agent and the stone powder of stirring
Mixture is uniformly divided into many parts, about every part of quality 10g；Choose the mixture that portion mixes and pour in cube mold, paving
2MPa it is forced into after Ping, compacting, then pour the 2nd part of mixture into, pave 2MPa compacting, be repeated in, until adding all mixing
Thing, the level on pressure device that is then placed on by mould is fixed, and adjusts pressure to the 260MPa room temperature extrusion forming of full pressure.
Embodiment 3
The artificial shale physical model (being designated as A3) of the present embodiment, its raw material composition includes:
Binding agent: YY505 epoxy AB glue 78g；
Stone powder: the silica flour 200g of 3000 mesh, the Kaolin 200g of 3000 mesh, the calcite 50g of 3000 mesh and 3000 mesh
Organic carbon dust 150g.
During making, pressure: 286MPa, one loads, full pressure 48 hours, stablizes afterwards 72 hours in cavity body of mould, de-
Mould aftershaping.Other are with embodiment 1.
Embodiment 4
The artificial shale physical model (being designated as A2) of the present embodiment, its raw material composition includes:
Binding agent: YY505 epoxy AB glue 90g；
Stone powder: the silica flour 200g of 3000 mesh, the Kaolin 200g of 3000 mesh, the calcite 25g of 3000 mesh and 3000 mesh
Organic carbon dust 75g.
During making, pressure: 260MPa, one loads, full pressure 48 hours, stablizes afterwards 72 hours in cavity body of mould, de-
Mould aftershaping.Other are with embodiment 1.
Embodiment 5
The artificial shale physical model (being designated as A1) of the present embodiment, its raw material composition includes:
Binding agent: YY505 epoxy AB glue 120g；
Stone powder: the silica flour 200g of 3000 mesh, the Kaolin 200g of 3000 mesh, the calcite 25g of 3000 mesh and 3000 mesh
Organic carbon dust 75g.
During making, pressure: 260MPa, one loads, full pressure 48 hours, stablizes afterwards 48 hours in cavity body of mould, de-
Mould aftershaping.Other are with embodiment 1.
Embodiment 6
The artificial shale physical model of the present embodiment, its raw material composition includes:
Binding agent: YY505 epoxy AB glue 60g；
Stone powder: the silica flour 100g of 3000 mesh, the Kaolin 300g of 3000 mesh, the calcite 25g of 3000 mesh, 3000 purposes
Organic carbon dust 75g, the ferrophosphorus powder 100g of 3000 mesh.
During making, pressure: 200MPa, one loads, full pressure demoulding after 30 hours, 40 DEG C of curing moldings.Other are with implementing
Example 1.
Embodiment 7
The artificial shale physical model of the present embodiment, its raw material composition includes:
Binding agent: YY505 epoxy AB glue 70g；
Stone powder: the silica flour 100g of 3000 mesh, the Kaolin 300g of 3000 mesh, the calcite 25g of 3000 mesh, 3000 purposes
Organic carbon dust 75g, the ferrophosphorus powder 200g of 3000 mesh.
During making, pressure: 200MPa, one loads, full pressure demoulding after 30 hours, 40 DEG C of curing moldings.Other are with implementing
Example 1.
Embodiment 1～the detection of embodiment 7 artificial shale physical model performance
Detecting embodiment 1～the artificial shale physical model performance of embodiment 7, data are listed in the table below (each number in table
Being this area routine according to sign to indicate, x, y, z represents different directions respectively, and x, y are to for being perpendicular to pressure direction, and z is to for flat
Row is in pressure direction, and p represents compressional wave, behalf shear wave, and t represents time, v representation speed, and L is length, and 1,2 represent in the direction
Having division, 45 represent 45 degree of angles):
| Numbering | tpx | tpy | tpz | tsx1 | tsx2 | tsy1 | tsy2 | tsz | tp45 |
| (μs) | (μs) | (μs) | (μs) | (μs) | (μs) | (μs) | (μs) | (μs) | |
| Embodiment 1 | 23.69 | 23.69 | 22.19 | 40.08 | 42.08 | 39.88 | 41.78 | 35.78 | 20.52 |
| Embodiment 2 | 24.7 | 24.68 | 23.02 | 41.47 | 42.87 | 41.17 | 42.57 | 36.87 | 21.58 |
| Embodiment 3 | 22.77 | 22.69 | 25.87 | 39.66 | 41.5 | 39.42 | 41.32 | 43.68 | 23.05 |
| Embodiment 4 | 21.23 | 21.83 | 20.13 | 37.38 | 38.56 | 37.4 | 38.46 | 33.8 | 19.05 |
| Embodiment 5 | 20.13 | 20.11 | 18.41 | 35.38 | 35.9 | 35.28 | 35.84 | 32.22 | 17.07 |
| Embodiment 6 | 26.46 | 26.2 | 30.54 | 42.25 | 48.35 | 41.55 | 47.85 | 44.45 | 26.14 |
| Embodiment 7 | 25.28 | 25.16 | 29.62 | 40.91 | 46.09 | 40.41 | 45.71 | 45.01 | 26.04 |
Additionally, in order to verify whether the artificial shale model made has uniformity in different directions, and the present invention also enters
Go model block uniformity measurement.Method: the X-direction at one piece of artificial shale physical model optionally takes five points and measures,
Z-direction at the artificial shale of same optionally takes five points and measures.Result shows, the model of the embodiment of the present invention 1～7 exists
In X-direction and Z-direction, there is uniformity, demonstrate artificial shale model, in different directions, there is uniformity, illustrate artificial
The making of shale model is successful.Such as, the shear wave oscillogram (X-direction) of embodiment 1 is shown in Figure 2, compressional wave oscillogram
(Z-direction) is shown in Figure 3.The compressional wave oscillogram of embodiment 2 is shown in Figure 4.
Additionally, Young's modulus E of each sample, Poisson's ratio ν of embodiment 1～7 is also detected, further by the present invention
The aspects such as the mechanical performance of the shale physical model of the confirmation present invention meet simulation experiment requirement.Fig. 5 is multiple embodiment samples
With the Young's modulus E curve chart of different axis of symmetry variable angle, Fig. 6 is that multiple embodiment sample is with different axis of symmetry variable angle
Poisson's ratio ν curve chart.It can be seen that Young's modulus E presents significantly change with the change of axis of symmetry angle, binding agent is used
Amount minimizing causes Young's modulus entirety to reduce.Along with the increase of sample anisotropic degree, Young's modulus is on 0 ° with 90 ° of directions
Difference also increase.Poisson's ratio occurs near 45 ° with axis of symmetry variable angle curve minimum, and maximum is 0 ° and 90 ° two
Place, in vertical laminated structure of shale structural grain Poisson's ratio to rock degree of consolidation insensitive.
May certify that, the artificial shale physical model that embodiment of the present invention 1-7 provides is and actual shale formation parameter phase
Symbol, is a kind of shale physical model meeting simulation experiment requirement, is applied to shale seismic reservoir wave response and each to different
Property simulation research among, it is possible to play good effect.
Embodiment 8
Present embodiments providing a kind of artificial shale physical model, its raw material composition includes:
Binding agent: YY505 epoxy AB glue 40g；
The silica flour 80g of 3000 mesh, the Kaolin 70g of 3000 mesh, the calcite 20g of 3000 mesh and the organic carbon of 3000 mesh
Powder 40g.
During making, the mixture of the binding agent stirred Yu stone powder is uniformly divided into many parts, about every part of quality 10g；
Layering is tamped.Full pressure: 160MPa, other process conditions are substantially with embodiment 2.
Product appearance sees Fig. 7.Basic parameter:
Density: 1.89g/cm3
X is to velocity of longitudinal wave: 3500m/s
Y-direction velocity of longitudinal wave: 3499m/s
Z-direction velocity of longitudinal wave: 3269m/s
Compressional wave anisotropy: 7.5%.
Note: wherein X, Y-direction are for being perpendicular to pressure direction；Z-direction is for being parallel to pressure direction.
Embodiment 9
Present embodiments providing a kind of artificial shale physical model, its raw material composition includes:
Binding agent: 20s-750 two component epoxy AB glue (purchased from the honest chemical industry in Shenzhen, gelatin viscosity be 2000～
3000CPS/25 DEG C, solidify hardness 70～100Shore D, shear strength >=10Mpa) 40g；
The silica flour 80g of 3000 mesh, the Kaolin 70g of 3000 mesh, the calcite 20g of 3000 mesh and the organic carbon of 3000 mesh
Powder 40g.
Make with embodiment 8.
Product appearance sees Fig. 8.Basic parameter:
Density: 1.61g/cm3
X is to velocity of longitudinal wave: 2344m/s
Y-direction velocity of longitudinal wave: 2350m/s
Z-direction velocity of longitudinal wave: 2143m/s
Compressional wave anisotropy: 9.4%
Note: wherein X, Y-direction are for being perpendicular to pressure direction；Z-direction is for being parallel to pressure direction.
Comparative example 1
Artificial shale physical model, its raw material composition includes:
Binding agent: ZB3216 double-component AB glue (Nanjing Zhong Bei Electronics Co., Ltd., gelatin viscosity be 8000～
10000CPS/25℃)40g；
The silica flour 80g of 3000 mesh, the Kaolin 70g of 3000 mesh, the calcite 20g of 3000 mesh and the organic carbon of 3000 mesh
Powder 40g.
Make with embodiment 8.Product appearance sees Fig. 9, it is impossible to effectively prepare artificial shale physical model.
Claims (13)
1. a manufacture method for artificial shale physical model, the method comprising the steps of:
Binding agent is mixed homogeneously with stone powder；Wherein, described binding agent is epoxy resin tackifier；Described stone powder includes stone
English, Kaolin, organic carbon dust and calcite, be in terms of 100% by the gross mass of stone powder, and each stone powder consumption is: quartz 10%-
70%, Kaolin 10%-80%, organic carbon dust 4%-25%, calcite 3%-10%；Described binder dosage accounts for the total matter of stone powder
The 5%～35% of amount；
Being packed in mould by the mixture of binding agent Yu stone powder, the level on pressure device that is placed on is fixed, and adjusts vertical direction pressure
To 80～300MPa, fixed placement more than 24 hours, primary solidification；
The demoulding, is dried the shale samples of primary solidification in 30～50 DEG C, prepares artificial shale physical model；
Wherein, the anisotropy of artificial shale physical model is controlled by controlling the mass ratio of binding agent and stone powder.
The manufacture method of artificial shale physical model the most according to claim 1, wherein, the granularity of described stone powder is 2000
Mesh-5000 mesh.
The manufacture method of artificial shale physical model the most according to claim 1, wherein, described binding agent is epoxy resin
AB glue, its liquid viscosity is 500～3000CPS/25 DEG C, solidifies hardness 70～100Shore D, shear strength >=10Mpa.
The manufacture method of artificial shale physical model the most according to claim 3, wherein, described binding agent is YY505A/B
Epoxide-resin glue.
5. according to the manufacture method of the artificial shale physical model described in claim 1 or 3 or 4, wherein, control binder dosage
Account for the 5%～12% of stone powder gross mass, and improve the anisotropy of artificial shale physical model more than 10%.
The manufacture method of artificial shale physical model the most according to claim 1, wherein, also includes ferrophosphorus in described stone powder
Powder, is in terms of 100% by the gross mass of stone powder, and the amount of ferrophosphorus powder is 3%～30%, and granularity is 2000 mesh-5000 mesh.
The manufacture method of artificial shale physical model the most according to claim 6, wherein, controls ferrophosphorus powder in stone powder
Usage ratio is 10%～30%.
The manufacture method of artificial shale physical model the most according to claim 6, wherein, controls ferrophosphorus powder in stone powder
Usage ratio is 10%～20%.
The manufacture method of artificial shale physical model the most according to claim 1, wherein, consisting of of described stone powder: with
The gross mass of stone powder is 100% meter, quartz 10%-40%, Kaolin 10%-50%, organic carbon dust 4%-25%, calcite
3%-10%, ferrophosphorus powder 10%～30%.
The manufacture method of artificial shale physical model the most according to claim 1, wherein, mixed by binding agent and stone powder
Compound is packed in mould, is the mode of entire pressurisation after employing is loaded, or uses layering pressuring method；
Described layering pressuring method is: the mixture of binding agent Yu stone powder is divided into many parts, and first part is packed in mould, paves
After be forced into 1～3MPa, then pour the 2nd part of mixture into, pave pressurization, be repeated in, until adding entire mixture；Wherein,
Controlling the floor height after every part of mixture is paved in a mold is 0.5～2mm.
11. 1 kinds of artificial shale physical models, its according to described in any one of claim 1～10 method make obtain, its
Density is 1.6g/cc～2.5g/cc, and porosity is 1%～15%；There is anisotropic character, and there is transverse isotropy
Feature, velocity of longitudinal wave is 2000m/s～4000m/s.
The application in shale reservoir study of the artificial shale physical model described in 12. claim 11.
13. application according to claim 12, wherein, are to apply described artificial shale physical model to carry out shale reservoir ground
Seismic wave response and anisotropy simulation study.
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| CN104462849B (en) * | 2014-12-24 | 2017-06-06 | 中国石油大学(北京) | Shale gas reservoir characteristics Forecasting Methodology and device |
| CN105203739A (en) * | 2015-10-29 | 2015-12-30 | 中国石油大学(北京) | Rock physical model-based shale stratum anisotropy parameter prediction method |
| CN105601169B (en) * | 2015-12-16 | 2017-11-07 | 中国石油大学(北京) | Kerogenous shale physical model preparation method and shale model based on hot pressing |
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| CN110940688B (en) * | 2018-09-21 | 2023-01-03 | 中国石油化工股份有限公司 | Shale artificial core preparation method and shale artificial core |
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| CN112500028B (en) * | 2019-09-16 | 2022-07-08 | 中国石油化工股份有限公司 | Physical property parameter variable seismic physical model, material and model manufacturing method |
| CN112129612A (en) * | 2020-08-28 | 2020-12-25 | 中国石油天然气集团有限公司 | Hydrate artificial rock core and preparation method and application thereof |
| CN113756800A (en) * | 2021-09-30 | 2021-12-07 | 中国矿业大学(北京) | Preparation method of artificial shale containing cracks, artificial shale containing cracks and application |
| CN113916628A (en) * | 2021-09-30 | 2022-01-11 | 中国矿业大学(北京) | Pure clay artificial rock core and preparation method and application thereof |
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