CN104007463A - Manual shale physical model and manufacturing method and application thereof - Google Patents
Manual shale physical model and manufacturing method and application thereof Download PDFInfo
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- CN104007463A CN104007463A CN201410255392.6A CN201410255392A CN104007463A CN 104007463 A CN104007463 A CN 104007463A CN 201410255392 A CN201410255392 A CN 201410255392A CN 104007463 A CN104007463 A CN 104007463A
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Abstract
The invention provides a manual shale physical model and a manufacturing method and application of the manual shale physical model. The manufacturing method of the manual shale physical model includes the first step of mixing adhesives and stone powder evenly, wherein the adhesives are epoxy resin adhesives, the stone powder comprises 10%-70% of quart, 10%-80% of kaoline, 4%-25% of organic carbon powder and 3%-10% of calcite, and the use amount of the adhesives is 5%-35% of the total mass of the stone powder, the second step of filling a mould with mixtures of the adhesives and the stone powder, placing and fixing the mould on a pressure gauge horizontally, adjusting the perpendicular pressure intensity to 80-300 MPa, fixedly placing the mould for more than 24 hours for preliminary solidifying, and the third step of demoulding, drying a shale sample subjected to preliminary solidifying at the temperature ranging from 30 DEG C to 50 DEGC and obtaining the manual shale physical model. The obtained manual shale physical model is compact, has specific porosity and density, has anisotropic characteristics, has transverse isotropic characteristics and can provide a reliable basis for comparison and verification of research results of actual shale reservoir strata.
Description
Technical field
The present invention relates to a kind of artificial shale physical model and preparation method thereof and application, belong to the geophysical research field of oil-gas exploration and exploitation.
Background technology
Shale is the sedimentogeneous rock with lamina and laminated structure of shale structure that a kind of particulate chip, clay mineral, organic matter that is less than 0.004mm by particle diameter etc. forms, its complicated component, except clay mineral, also contain many detrital minerals and authigenic mineral etc., and different regions differ greatly.Shale is widely distributed at occurring in nature, and nearly in sedimentogeneous rock more than 60% is shale.Common shale type has black shale, yeath, resinous shale, siliceous shale, irony shale, calcareous shale, arenaceous shale etc.Under normal circumstances, shale factor of porosity is between 2～15%, and permeability is less than 1mD, is typical low porosity and low permeability reservoir.
Shale gas refer to theme be arranged in dark-coloured mud shale or high-carbon mud shale, taking adsorb or free state as the gas accumulation of main existing way.In shale gas reservoir, the powder shale, silty that rock gas is also present in sandwich-like in shale formation, is even the result of assembling nearby in source bed after rock gas generates, and shows as one-tenth Tibetan, typical original place pattern.The exploration of shale gas, R and D are the study hotspots of this area always.Wherein, utilize seismic physical model and indoor ultrasonic acquisition system to carry out laboratory collection, processing, and then the seismic response features of research particular model, become an important technology of reservoir rock physical analysis, there is important directive significance for the exploratory development of oil shale fuel gas reservoir.
In seismic physical modeling experiment, the making of simulating the artificial shale physical model of natural shale composition and structure is a gordian technique, its model accuracy is directly connected to the success or failure that simulated experiment is analyzed, and has important researching value and meaning for the specific oil of simulation, gas reservoir.But, the research of artificial shale physical model is risen in nearly 10 years, documents and materials aspect theoretical research are relatively less, and the up to the present world that can more successfully produce this artificial Shale Media in laboratory does not have all the time, and corresponding document is also less.
Shale has laminated or laminar bedding, has obvious velocity anisotropy; Meanwhile, shale is also a kind of Method in Transverse Isotropic Medium, i.e. TI medium; In addition,, due to development technique, only have those low Poisson ratios, high elastic modulus, be rich in organic fragility shale and be only the main target of shale gas exploration.Artificial shale physical model also must have these characteristics, could accurately carry out simulated experiment analysis.
In theory, the making of manual simulation TI medium can adopt lamellar structure material to bond or pressing conventionally, and this case inventor also once adopted and carrys out in this way manufacturing artificial shale physical model in R&D process.Wherein, due to the good water absorption of paper material, easily soaked into, there is again layering, so select newspaper to simulate shale, after employing bonding agent soaks into newspaper, multilayer newspaper lamination is made to artificial shale physical model, the artificial shale sample of made is Method in Transverse Isotropic Medium, and there is anisotropic character, also can reach the object that changes velocity anisotropy's size by the composition and the consumption that change bonding agent.But, the artificial shale physical model that this employing newspaper and adhesive lamination are made, it does not have hole, can not carry out difference oil, gas, water saturation test, and larger with actual shale gap, only can serve as a kind of simulation means of research TI medium.
This case inventor also once attempted adopting the sintering process of traditional fabrication artificial rock physical model to carry out manufacturing artificial shale physical model in research process.For shale gas reservoir, seimic wave velocity is mainly subject to the pore space structures such as mineral, factor of porosity, crack and organic impact.Inventor has studied architectural feature between the space such as essential mineral composition, factor of porosity of shale, adopted relevant clay breeze and chip breeze to add a certain proportion of water glass pressurization, baking, sintering and carried out manufacturing artificial shale, the sample of made also has anisotropic character.But the existing subject matter of this sintering process is: sintering process yield rate is lower, and reduction ratio is more serious; Prepared sample rate is too little, and factor of porosity, permeability are too large; If the hope of sintering process later stage adds organic composition difficulty larger.This kind of method is also difficult to produce the petrophysical model of the Brittleness with low Poisson ratio, high elastic modulus.
In sum, based on studying shale seismic response and the anisotropic character great importance for the exploration and development of shale gas, how to produce a kind of densification, there is specific pore degree and density, there is the physical model that can accurately simulate shale of anisotropy and transverse isotropy and the feature of enbrittling, be current this area the technical barrier that must solve.
Summary of the invention
One object of the present invention is to provide a kind of densification, has specific pore degree and density, can accurately simulates the method for making of the shale physical model of shale architectural feature, for next step seismic physical model simulation of carrying out artificial shale provides available cast material, for contrast, the checking of actual shale reservoir study result provide reliable basis, a kind of new approaches of studying the seismic prospecting of artificial oil shale fuel gas reservoir are proposed.
Another object of the present invention is to provide prepared 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 a kind of method for making of artificial shale physical model, the method comprising the steps of:
Bonding agent is mixed with stone flour; Wherein, described bonding agent is epoxy resin tackifier; Described stone flour comprises quartz, porcelain earth, organic carbon dust and kalzit, and taking the gross mass of stone flour as 100%, each stone flour consumption is: quartzy 10%-70%, porcelain earth 10%-80%, organic carbon dust 4%-25%, kalzit 3%-10%; Described binder dosage accounts for 5%～35% of stone flour gross mass;
The potpourri of bonding agent and stone flour is packed in mould, and the level on pressure device that is placed on is fixed, and adjusts vertical direction pressure to 80～300MPa, and fixed placement is more than 24 hours, primary solidification;
The demoulding, by the shale sample of primary solidification in 30～50 DEG C dry, make artificial shale physical model.
In the method for making of artificial shale physical model of the present invention, clay mineral in main brittle mineral, the porcelain earth simulation shale adopting in quartz analogue shale, with the carbonate mine in kalzit simulation shale, with the organic matter in organic carbon simulation shale, adjust the usage ratio of each component, and mix the standby artificial shale physical model of cold compaction with the epoxy resin tackifier of specified quantitative.The artificial shale physical model making according to method of the present invention, it has obvious shear wave anisotropy and compressional wave anisotropy, and there is transverse isotropy feature, and there is specific pore degree and density, there is low Poisson ratio, high elastic modulus, meet shale Brittleness, can simulate exactly natural shale, for next step seismic physical model simulation of carrying out artificial shale provides available cast material, and then can provide reliable basis for the contrast of actual shale reservoir study result, checking.
According to specific embodiment of the invention scheme, in the method for making of artificial shale physical model of the present invention, described stone flour granularity and sorting can be according to the specific requirement of artificial shale physical model is selected; Wish to get the artificial shale physical model that factor of porosity is larger, select the good stone flour of grain sorting, the factor of porosity of artificial shale physical model is required hour to the sorting scope of increase stone flour that can be suitable.In order to approach as far as possible actual shale, reduce factor of porosity and permeability, in the present invention, the particle diameter of stone flour used is 2000 order～5000 orders (referring to 2000 order～5000 mesh sieves herein), is generally particle diameter at 2000～4000 object stone flours.Wherein said organic carbon dust refers to pulverous organic carbon.Each stone flour can carry out respectively carrying out ball milling to meet granularity requirements after ball milling or mixing.
Inventor finds under study for action, in the present invention, the characteristic of adhesive therefor has material impact for the performance of artificial shale physical model, according to specific embodiment of the invention scheme, in the present invention, adhesive therefor is epoxy resin tackifier, be preferably epoxide resin AB glue, its liquid viscosity is 500～3000CPS/25 DEG C, solidifies hardness 70～100ShoreD, shear resistance >=10Mpa.The liquid viscosity of wherein said bonding agent refers to liquid viscosity when A, B bis-components of bonding agent are uncured after mixing, if A, B bis-components are liquid, preferably, the viscosity of two components is all within the scope of this.Under normal circumstances, use the bonding agent that meets viscosity of the present invention and curing hardness requirement, can successfully prepare the artificial shale physical model that can simulate natural shale according to method of the present invention.Further, the proportion of the preferred bonding agent of the present invention is 1.0～1.2g/cm
3(25 DEG C), shrinkage factor≤0.5%.Other performances of bonding agent, as appearance luster, set time etc. not done particular/special requirement, but be should be understood that and should meet running time demand of the present invention set time.The bonding agent that meets requirement of the present invention can be commercially available, and for example, described bonding agent can be AB bi-component epoxide-resin glue, can be for example more specifically YY505A/B (transparent) epoxide-resin glue etc.When concrete application, the mixing consumption of A, B bis-components can be with reference to prior art or according to supplier's suggestion.
Inventor also finds under study for action, in the method for making of artificial shale physical model of the present invention, can control the anisotropy of artificial shale physical model by controlling the mass ratio of adhesive therefor and stone flour, particularly, in described scope, reduce the consumption of described bonding agent, be conducive to improve the anisotropy (shear wave anisotropy and compressional wave anisotropy) of prepared artificial shale physical model.For example, in series of experiments of the present invention, account for below 12% of stone flour gross mass by control binder dosage in described scope, and can improve the shear wave anisotropy of artificial shale physical model and compressional wave anisotropy more than 10%.
The anisotropy of the natural shale of part can be higher, can be up to more than 20% even more than 30%.In order further to improve the anisotropy of the artificial shale physical model of made, according to the preferred embodiments of the invention, in the method for making of artificial shale physical model of the present invention, in described stone flour, also comprise ferrophosphorus powder, taking the gross mass of stone flour as 100%, the amount of ferrophosphorus powder is 3%～30%, and granularity is 2000 order～5000 orders.Ferrophosphorus powder be added with the anisotropy that helps improve prepared artificial shale physical model, but, be not that the consumption of ferrophosphorus powder is more high better.According to preferred version of the present invention, controlling the ferrophosphorus powder usage ratio in stone flour is 10%～30%, more preferably 10%～20%.
In of the present invention one preferred specific embodiments, the consisting of of described stone flour: taking the gross mass of stone flour as 100%, quartzy 10%-40%, porcelain earth 10%-50%, organic carbon dust 4%-25%, kalzit 3%-10%, ferrophosphorus powder 10%～30% is preferably 10%～20%.
According to specific embodiment of the invention scheme, in the method for making of artificial shale physical model of the present invention, the potpourri of bonding agent and stone flour is packed in mould, can be the mode that adopts the rear entire pressurisation of filling, or adopt layering pressuring method.Two kinds of types of feed on the main performance of artificial shale physical model without too large impact.In the present invention, preferably adopt layering pressuring method, particularly, described layering pressuring method is: the potpourri of bonding agent and stone flour is divided into many parts, first part is packed in mould, after paving, be forced into 1～3MPa, then pour the 2nd part of potpourri into, pave pressurization, repeat successively, until add entire mixture; Wherein, the floor height of controlling after every part of potpourri is paved in mould is 0.5～2mm.After entire mixture filling, then entire pressurisation.
According to specific embodiment of the invention scheme, in the method for making of artificial shale physical model of the present invention, the mould that installs bonding agent and stone flour is on pressure device when entire pressurisation, and pressure remains on 80～300MPa and fixes 24 hours and reach above primary solidification degree.According to method of the present invention, for the artificial shale component of determining, pressure in described scope or high or low little on model finished product density impact.In the method for making of artificial shale physical model of the present invention, pressuring method is for colding pressing, and temperature is no more than 30 DEG C and is advisable, normal temperature (18～25 DEG C) operation conventionally.
After the shale sample demoulding of primary solidification moulding further in 30～50 DEG C dry, thoroughly curing molding, can make artificial shale physical model of the present invention.Can polish as required and repair outward appearance.
On the other hand, the present invention also provides a kind of artificial shale physical model, and it is made and obtain according to said method of the present invention.Artificial shale physical model of the present invention, its density is 1.6g/cc～2.5g/cc, conventionally at 1.9g/cc～2.5g/cc, factor of porosity is 1%～15%; Have anisotropic character (the compressional wave opposite sex more than 2%, can up to more than 26%), and have transverse isotropy feature, velocity of longitudinal wave is 2000m/s～4000m/s; And its Brittleness also accords with actual page petrofacies, can simulate truly natural shale.
On the other hand, the present invention also provides the application in shale reservoir study of described artificial shale physical model.Particularly, be that the described artificial shale physical model of application is carried out shale seismic reservoir wave response and anisotropy modeling effort.
In sum, the present invention is according to seismic physical modeling technical characterstic, from the relation of actual formation feature and laboratory model making, solve the problem that shale model may occur in designing and making, a kind of densification is provided, has there is artificial shale physical model of certain factor of porosity and density and preparation method thereof, this technical modelling lamina and the schistosity structure of shale, structure and these Structural Tectonics by the prepared artificial shale sample of selection of its component with different levels align, and prepared artificial shale sample is anisotropic medium; And according to the relation of crack and axis of symmetry, can prove that artificial shale material model sample of the present invention is Method in Transverse Isotropic Medium, i.e. TI medium.In addition, artificial shale physical model of the present invention can be velocity of longitudinal wave and the shear wave velocity of seismic wave in the organic mud shale rock of richness more predictably, for contrast, the checking of actual shale reservoir study result provide reliable basis.
Brief description of the drawings
Fig. 1 is the making schematic flow sheet of artificial shale physical model of the present invention.
Fig. 2 is the artificial shale physical model shear wave oscillogram of the embodiment of the present invention 1.
Fig. 3 is the artificial shale physical model compressional wave oscillogram of the embodiment of the present invention 1.
Fig. 4 is the artificial shale physical model compressional wave oscillogram of the embodiment of the present invention 2.
Fig. 5 is the Young modulus E curve maps of multiple embodiment samples with different axis of symmetry variable angle.
Fig. 6 is the Poisson ratio ν curve maps of multiple embodiment samples 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.
Embodiment
Understand for technical characterictic of the present invention, object and beneficial effect being had more clearly, existing technical scheme of the present invention is carried out to following detailed description, but can not be interpreted as restriction that can practical range of the present invention.
Embodiment 1
The present embodiment provides a kind of artificial shale physical model, and its raw material composition comprises:
Cementing agent: YY505 epoxy AB glue (Yancheng Yi Jiayi Electron Material Co., Ltd) 50g, its Specifeca tion speeification is as follows: YY505A, hyalomucoid, viscosity 1200～1800CPS/25 DEG C; YY505B, faint yellow mucus, viscosity 800～1200CPS/25 DEG C; In addition 25 DEG C of proportion 1.12 ± 0.05g/cm of A liquid,
3, 25 DEG C of proportion 1.08 ± 0.05g/cm of B liquid
3; A, B mixed weight are than being 2:1.Solidfied material characteristic: hardness 85 ± 5Shore D, shear resistance 34～38Mpa; Shrinkage factor≤0.5%;
Stone flour: 3000 object silica flour 200g, 3000 object porcelain earth 200g, 3000 object kalzit 25g and the organic carbon dust 75g of 3000 objects.
The present embodiment also provides the method for making of above-mentioned artificial shale physical model, specifically makes flow process as shown in Figure 1, and the method comprises the following steps:
Press above-mentioned raw materials composition, YY505 epoxy A glue (epoxy resin) and B glue (hardening agent) are stirred, obtain cementing agent;
Take each stone flour, ball milling mixes more than 10 hours, then mixes with cementing agent, stirs, and obtains potpourri;
Steel mould is cleaned up and smear one deck vaseline in mould inner side;
The potpourri of bonding agent and stone flour is packed in mould, and the level on pressure device that is placed on is fixed, and adjusts vertical direction pressure to 260MPa, normal temperature fixed placement 48 hours, primary solidification; Then in cavity body of mould, stablize 48 hours, the demoulding, takes out shale sample, puts into 40 DEG C of insulation cans and about 2 days, makes it solidify;
Shale sample is taken out, use sand papering surface, become comparatively regular rectangular parallelepiped, after having polished, sample is put into 40 DEG C of baking boxs and thoroughly dried, 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 comprises:
Cementing agent: YY505 epoxy AB glue 55g;
Stone flour: 3000 object silica flour 200g, 3000 object porcelain earth 200g, 3000 object kalzit 25g and the organic carbon dust 75g of 3000 objects.
The method for making of the artificial shale physical model of the present embodiment, compared with embodiment 1, is to adopt layering to load, and other process conditions are with embodiment 1.The concrete operation step of wherein said layering filling is: the potpourri of stir cementing agent and stone flour is evenly divided into many parts, every part of quality 10g left and right; Choosing the potpourri that portion mixes pours in cube mold, after paving, be forced into 2MPa, compacting, pour again the 2nd part of potpourri into, pave 2MPa compacting, repeat successively, until add entire mixture, then the level on pressure device that mould is placed on is fixed, and adjusts pressure to the extrusion forming of the full 260MPa of pressure normal temperature.
Embodiment 3
The artificial shale physical model (being designated as A3) of the present embodiment, its raw material composition comprises:
Cementing agent: YY505 epoxy AB glue 78g;
Stone flour: 3000 object silica flour 200g, 3000 object porcelain earth 200g, 3000 object kalzit 50g and the organic carbon dust 150g of 3000 objects.
When making, pressure: 286MPa, one is loaded, and full pressure 48 hours stablized demoulding aftershaping afterwards 72 hours in cavity body of mould.Other are with embodiment 1.
Embodiment 4
The artificial shale physical model (being designated as A2) of the present embodiment, its raw material composition comprises:
Cementing agent: YY505 epoxy AB glue 90g;
Stone flour: 3000 object silica flour 200g, 3000 object porcelain earth 200g, 3000 object kalzit 25g and the organic carbon dust 75g of 3000 objects.
When making, pressure: 260MPa, one is loaded, and full pressure 48 hours stablized demoulding aftershaping afterwards 72 hours in cavity body of mould.Other are with embodiment 1.
Embodiment 5
The artificial shale physical model (being designated as A1) of the present embodiment, its raw material composition comprises:
Cementing agent: YY505 epoxy AB glue 120g;
Stone flour: 3000 object silica flour 200g, 3000 object porcelain earth 200g, 3000 object kalzit 25g and the organic carbon dust 75g of 3000 objects.
When making, pressure: 260MPa, one is loaded, and full pressure 48 hours stablized demoulding aftershaping afterwards 48 hours in cavity body of mould.Other are with embodiment 1.
Embodiment 6
The artificial shale physical model of the present embodiment, its raw material composition comprises:
Cementing agent: YY505 epoxy AB glue 60g;
Stone flour: 3000 object silica flour 100g, 3000 object porcelain earth 300g, 3000 object kalzit 25g, the organic carbon dust 75g of 3000 object, 3000 object ferrophosphorus powder 100g.
When making, pressure: 200MPa, one is loaded, the full demoulding after 30 hours, the 40 DEG C of curing moldings of pressing.Other are with embodiment 1.
Embodiment 7
The artificial shale physical model of the present embodiment, its raw material composition comprises:
Cementing agent: YY505 epoxy AB glue 70g;
Stone flour: 3000 object silica flour 100g, 3000 object porcelain earth 300g, 3000 object kalzit 25g, the organic carbon dust 75g of 3000 object, 3000 object ferrophosphorus powder 200g.
When making, pressure: 200MPa, one is loaded, the full demoulding after 30 hours, the 40 DEG C of curing moldings of pressing.Other are with embodiment 1.
The artificial shale physical model Performance Detection of embodiment 1～embodiment 7
The artificial shale physical model performance of embodiment 1～embodiment 7 is detected, data are listed in the table below, and (in table, each data indicate and are that this area is conventional to be indicated, and x, y, z represents respectively different directions, and x, y are to being perpendicular to pressure direction, z is to for being parallel to pressure direction, p represents compressional wave, and s represents shear wave, and t represents the time, v representation speed, L is length, and 1,2 represent that the party upwards has division, and 45 represent miter angle):
| 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 |
In addition, in order to verify whether the artificial shale model of making has homogeneity in different directions, and the present invention has also carried out model block uniformity measurement.Method: optionally get five points at the directions X of an artificial shale physical model and measure, optionally get five points in the Z of the artificial shale of same direction and measure.Result shows, the model of the embodiment of the present invention 1～7 has homogeneity in directions X and Z direction, has verified that artificial shale model has homogeneity in different directions, and the making that artificial shale model has been described is successful.For example, the shear wave oscillogram (directions X) of embodiment 1 is shown in Figure 2, and compressional wave oscillogram (Z direction) is shown in Figure 3.The compressional wave oscillogram of embodiment 2 is shown in Figure 4.
In addition, the present invention also Young modulus E, the Poisson ratio ν of the each sample to embodiment 1～7 detects, and further confirms that the aspects such as the mechanical property of shale physical model of the present invention meet simulated experiment requirement.Fig. 5 is the Young modulus E curve maps of multiple embodiment samples with different axis of symmetry variable angle, and Fig. 6 is the Poisson ratio ν curve maps of multiple embodiment samples with different axis of symmetry variable angle.Can find out, Young modulus E presents obvious variation with the variation of axis of symmetry angle, and binder dosage minimizing causes Young modulus entirety to reduce.Along with the increase of sample anisotropic degree, Young modulus 0 ° with 90 ° of directions on difference also increase.Poisson ratio appears near 45 ° with axis of symmetry variable angle curve minimum, and maximal value is 0 ° and 90 ° of two place, also insensitive to rock degree of consolidation in vertical laminated structure of shale structure grain Poisson ratio.
Can prove, the artificial shale physical model that embodiment of the present invention 1-7 provides is to conform to actual shale formation parameter, it is a kind of shale physical model that meets simulated experiment requirement, be applied to, among the research of shale seismic reservoir wave response and anisotropy simulation, can play good effect.
Embodiment 8
The present embodiment provides a kind of artificial shale physical model, and its raw material composition comprises:
Cementing agent: YY505 epoxy AB glue 40g;
3000 object silica flour 80g, 3000 object porcelain earth 70g, 3000 object kalzit 20g and the organic carbon dust 40g of 3000 objects.
When making, the potpourri of the cementing agent stirring and stone flour is evenly divided into many parts, every part of quality 10g left and right; Layering is tamped.Full pressure: 160MPa, other process conditions are substantially with embodiment 2.
Product appearance is referring to Fig. 7.Basic parameter:
Density: 1.89g/cm
3
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 perpendicular to pressure direction; Z-direction is for being parallel to pressure direction.
Embodiment 9
The present embodiment provides a kind of artificial shale physical model, and its raw material composition comprises:
Cementing agent: 20s-750 two component epoxy AB glue (purchased from the honest chemical industry in Shenzhen, gelatin viscosity is 2000～3000CPS/25 DEG C, solidifies hardness 70～100Shore D, shear resistance >=10Mpa) 40g;
3000 object silica flour 80g, 3000 object porcelain earth 70g, 3000 object kalzit 20g and the organic carbon dust 40g of 3000 objects.
Make with embodiment 8.
Product appearance is referring to Fig. 8.Basic parameter:
Density: 1.61g/cm
3
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 perpendicular to pressure direction; Z-direction is for being parallel to pressure direction.
Comparative example 1
Artificial shale physical model, its raw material composition comprises:
Two component AB glue (Nanjing Zhong Bei Electronics Co., Ltd., gelatin viscosity the is 8000～10000CPS/25 DEG C) 40g of cementing agent: ZB3216;
3000 object silica flour 80g, 3000 object porcelain earth 70g, 3000 object kalzit 20g and the organic carbon dust 40g of 3000 objects.
Make with embodiment 8.Product appearance, referring to Fig. 9, cannot effectively be prepared artificial shale physical model.
Claims (10)
1. a method for making for artificial shale physical model, the method comprising the steps of:
Bonding agent is mixed with stone flour; Wherein, described bonding agent is epoxy resin tackifier; Described stone flour comprises quartz, porcelain earth, organic carbon dust and kalzit, and taking the gross mass of stone flour as 100%, each stone flour consumption is: quartzy 10%-70%, porcelain earth 10%-80%, organic carbon dust 4%-25%, kalzit 3%-10%; Described binder dosage accounts for 5%～35% of stone flour gross mass;
The potpourri of bonding agent and stone flour is packed in mould, and the level on pressure device that is placed on is fixed, and adjusts vertical direction pressure to 80～300MPa, and fixed placement is more than 24 hours, primary solidification;
The demoulding, by the shale sample of primary solidification in 30～50 DEG C dry, make artificial shale physical model.
2. the method for making of artificial shale physical model according to claim 1, wherein, the granularity of described stone flour is 2000 order-5000 orders.
3. the method for making of artificial shale physical model according to claim 1, wherein, described bonding agent is epoxide resin AB glue, its liquid viscosity is 500～3000CPS/25 DEG C, solidifies hardness 70～100Shore D, shear resistance >=10Mpa; For example, described bonding agent is YY505A/B epoxide-resin glue.
4. according to the method for making of the artificial shale physical model described in claim 1 or 3, wherein, control the anisotropy of artificial shale physical model by controlling the mass ratio of bonding agent and stone flour; Preferably, control binder dosage and account for below 12% of stone flour gross mass, and the anisotropy that improves artificial shale physical model is more than 10%.
5. the method for making of artificial shale physical model according to claim 1, wherein, also comprises ferrophosphorus powder in described stone flour, taking the gross mass of stone flour as 100%, the amount of ferrophosphorus powder is 3%～30%, and granularity is 2000 order-5000 orders; Preferably, controlling the ferrophosphorus powder usage ratio in stone flour is 10%～30%, more preferably 10%～20%.
6. the method for making of artificial shale physical model according to claim 1, wherein, the consisting of of described stone flour: taking the gross mass of stone flour as 100%, quartz 10%-40%, porcelain earth 10%-50%, organic carbon dust 4%-25%, kalzit 3%-10%, ferrophosphorus powder 10%～30%.
7. the method for making of artificial shale physical model according to claim 1, wherein, is packed into the potpourri of bonding agent and stone flour in mould, is the mode that adopts the rear entire pressurisation of filling, or adopts layering pressuring method;
Described layering pressuring method is: the potpourri of bonding agent and stone flour is divided into many parts, and first part is packed in mould, after paving, is forced into 1～3MPa, then pours the 2nd part of potpourri into, paves pressurization, repeats successively, until add entire mixture; Wherein, the floor height of controlling after every part of potpourri is paved in mould is 0.5～2mm.
8. an artificial shale physical model, it is made and obtains according to method described in claim 1～6 any one, and its density is 1.6g/cc～2.5g/cc, and factor of porosity is 1%～15%; Have anisotropic character, and have transverse isotropy feature, velocity of longitudinal wave is 2000m/s～4000m/s.
9. the application of artificial shale physical model claimed in claim 8 in shale reservoir study.
10. application according to claim 9 wherein, is that the described artificial shale physical model of application is carried out shale seismic reservoir wave response and anisotropy modeling effort.
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