CN109736794A

CN109736794A - Method, device and system for determining characteristics of fractured porous compact sandstone reservoir

Info

Publication number: CN109736794A
Application number: CN201910066660.2A
Authority: CN
Inventors: 张荣虎; 曾庆鲁; 斯春松; 王俊鹏; 王珂; 伍劲; 刘春�; 杨钊; 陈戈; 张惠良; 王力宝; 陈希光; 王波; 宋兵; 赵继龙; 李娴静; 智凤琴
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2019-01-24
Filing date: 2019-01-24
Publication date: 2019-05-10

Abstract

The embodiment of the specification discloses a method, a device and a system for determining characteristics of a fractured porous compact sandstone reservoir, wherein the method comprises the steps of determining fracture characteristics, pore characteristics and pore throat characteristics of a target work area according to the analysis result of the same rock sample of the target work area; and determining reservoir characteristics of the target work area according to the fracture characteristics, the pore characteristics and the pore throat characteristics. By utilizing the embodiments of the specification, the reservoir characteristics such as the pore structure, the cause mechanism, the reservoir fracture grade and distribution of the tight sandstone reservoir can be determined more systematically and accurately.

Description

Fractured pore type tight sandstone reservoir feature determines method, apparatus and system

Technical field

The present invention relates to petroleum natural gas exploration technical fields, particularly, it is fine and close to be related to a kind of Fractured pore type Sandstone reservoir feature determines method, apparatus and system.

Background technique

For Fractured pore type tight sandstone reservoir in each oil-gas bearing basin extensive development in the whole world, resource potential is huge, and In domestic each oil-gas bearing basin -- deep is almost distributed, and is to produce field in oil gas increasing the storage important in recent years.With exploration The continuous intensification of Exploitation degree is growing with Natural Gas Demand, and the importance of Fractured pore type tight sandstone reservoir is increasingly Enhancing.Therefore, the geological knowledge of such reservoir is improved, continuous suggestions for improvement has the stable development of China Petroleum There is important strategic importance.

Fractured pore type tight sandstone reservoir will generally undergo complicated diagenesis in very long earth history period It is squeezed with construction and rupture transformation, typically exhibits that buried depth is big, diagenesis intensity is high, physical property is poor, complex pore structure, crack The features such as compared with development, there are unique microcosmic reservoir space structure and seepage flow characteristics.Such reservoir has dual media feature, base Main space of the matter hole as Oil And Gas Occurrence, and crack is the key factor linked up matrix pores, improve oil-production capacity, is split The effectively configuration of seam-hole-venturi is the pacing factor of oil/gas well high and stable production, but different reservoir space difference in size are significant, From micron order to nanoscale, the complicated multiplicity of space configuration.

Although being ground currently, having to tight sandstone reservoir pore structure, origin mechanism, Reservoir Fracture level and distribution characteristics Study carefully, but often separately studies in crack with hole, structure feature difference and configuration relation between cannot reflecting.And crack Property pore type tight sandstone reservoir microstructure heterogeneity is strong, and a large amount of experiment analysis results are based on qualitative or statistical Analysis, multi-solution is strong, is difficult unified study and recognizes.

Summary of the invention

This specification embodiment be designed to provide a kind of Fractured pore type tight sandstone reservoir feature determine method, Apparatus and system, can be with more systematic accurate determining reservoir characteristic.

This specification provides that a kind of Fractured pore type tight sandstone reservoir feature determines method, apparatus and system is to include As under type is realized:

A kind of Fractured pore type tight sandstone reservoir feature determines method, comprising:

The FRACTURE CHARACTERISTICS in target work area, pore character are determined according to the analysis result of the same rock sample sample to target work area And pore throat characteristic；

The reservoir characteristic in the target work area is determined according to the FRACTURE CHARACTERISTICS, pore character and pore throat characteristic.

In another embodiment of the method that this specification provides, the FRACTURE CHARACTERISTICS in the determining target work area, hole Gap feature and pore throat characteristic, comprising:

Based on the same rock sample sample using progressive manner production multistage, multiple dimensioned rock sample sample, comprising:

Choose full diameter sample；

Level-one plunger sample is drilled through in the predetermined patterns of the full diameter sample, cuts two stage column from the level-one plunger sample Sample is filled in, and cuts chip sample production ordinary sheet and casting body flake from the level-one plunger sample；

Micro- brill sample is drilled through from the second level plunger sample；

It is struck from the predetermined patterns of the full diameter sample and takes irregular sample；

Sample making big thin slice containing crack is cut from the fracture development position of the full diameter sample；

Determine the analysis to multistage, the multiple dimensioned rock sample sample as a result, determining target work according to the analysis result FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic in area.

In another embodiment of the method that this specification provides, the determination is to multistage, the multiple dimensioned rock The analysis result of all product, comprising:

FRACTURE CHARACTERISTICS analysis is carried out to multistage, the multiple dimensioned rock sample sample according to following experimental procedures, is analyzed As a result:

Fracture permeabgility data are obtained using rock core Physical Property Analysis based on the full diameter sample；

Crack system, open degree, filling operation, connection are obtained using rock core crack CT scan based on the full diameter sample Than data and slot apertures spatial structure characteristic；

Crack open degree, charges type, filling operation are obtained using microscopic analysis containing the big thin slice in crack based on described Data.

Pore character analysis is carried out to multistage, the multiple dimensioned rock sample sample according to following experimental procedures, is analyzed As a result:

The matrix pores radius that radius is greater than 8 μm is obtained using 8 μm of matrix pores CT scan based on the second level plunger sample Frequency distribution, connectivity data and spatial distribution characteristic；

Test, which is seeped, using hole based on the second level plunger sample obtains matrix porosity, matrix permeability data；

Average pore radius, pore radius frequency distribution data are obtained using constant speed pressure mercury based on the second level plunger sample；

Based on micro- sample that bores using the 0.9 μm of matrix pores of matrix pores CT scan acquisition radius greater than 0.9 μm half Diameter frequency distribution, connectivity data and spatial distribution characteristic；

Matrix pores type, Areal porosity data are obtained based on the casting body flake；

The frequency distribution of matrix pores radius and connectivity data are obtained using laser co-focusing based on the casting body flake；

Chink content, chink type are obtained based on the ordinary sheet；

Matrix pores radius, Filling Characteristics and connectivity number are obtained using scanning electron microscope scanning based on the irregular sample According to.

Pore throat characteristic analysis is carried out to multistage, the multiple dimensioned rock sample sample according to following experimental procedures, is analyzed As a result:

Pore throat radius distribution frequency data are obtained using nuclear magnetic resonance based on the second level plunger sample；

Average throat radius, throat radius frequency distribution data are obtained using constant speed pressure mercury based on the second level plunger sample；

Replacement pressure and pore throat radius frequency distribution data are obtained using high-pressure mercury test based on the second level plunger sample；

Micropore radius, throat radius and connectivity number are obtained using field emission scanning electron microscope based on the ordinary sheet According to；

Throat radius and connectivity data are obtained using laser confocal scanning based on the casting body flake.

In another embodiment of the method that this specification provides, the method also includes:

Determine the evaluating reservoir in target work area as a result, the Comprehensive Evaluation of Reservoir standard root according to Comprehensive Evaluation of Reservoir standard It is determined according to the reservoir characteristic, comprising:

According to lithology, matrix porosity, matrix permeability, fracture permeabgility, fracture aperture, Areal porosity, matrix pores half Diameter, replacement pressure, average pore throat radius, chink content, microstructure characteristic, assessment parameter establish Comprehensive Evaluation of Reservoir Standard.

On the other hand, this specification embodiment also provides a kind of determining dress of Fractured pore type tight sandstone reservoir feature It sets, described device includes:

Parameter attribute determining module, for determining target work according to the analysis result of the same rock sample sample to target work area FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic in area；

Reservoir characteristic determining module, for determining the mesh according to the FRACTURE CHARACTERISTICS, pore character and pore throat characteristic Mark the reservoir characteristic in work area.

In another embodiment for the described device that this specification provides, described device further include:

Evaluation result determining module, for determining the evaluating reservoir in target work area according to Comprehensive Evaluation of Reservoir standard as a result, The Comprehensive Evaluation of Reservoir standard is determined according to the reservoir characteristic, comprising:

On the other hand, this specification embodiment also provides a kind of determination of Fractured pore type tight sandstone reservoir feature and sets It is standby, it is real when described instruction is executed by the processor including processor and for the memory of storage processor executable instruction It is existing the following steps are included:

On the other hand, this specification embodiment also provides a kind of reservoir based on any one above-mentioned embodiment the method Feature determines system, and the system comprises FRACTURE CHARACTERISTICSs to determine that subsystem, pore character determine that subsystem, pore throat characteristic determine son System and central processing unit；

The FRACTURE CHARACTERISTICS determines that subsystem includes the first CT scanner, the first hole infiltration tester, the first petrographic microscope；

The pore character determines that subsystem includes the second CT scanner, tester is seeped in the second hole, the first constant speed pressure mercury is surveyed Try instrument, the second petrographic microscope, first laser confocal scanning microscope, the first scanning electron microscope, the first field emission scanning electron microscope；

The pore throat characteristic determines that subsystem includes high-pressure mercury tester, nuclear magnetic resonance tester, the second constant speed pressure mercury Tester, the second scanning electron microscope, the second field emission scanning electron microscope, second laser confocal scanning microscope；

The FRACTURE CHARACTERISTICS determines the FRACTURE CHARACTERISTICS data of rock sample sample of the subsystem for acquiring target work area；

The pore character determines subsystem for acquiring the pore character data of the rock sample sample；

The pore throat characteristic determines subsystem for acquiring the pore throat characteristic data of the rock sample sample；

The central processing unit is used for the FRACTURE CHARACTERISTICS data, pore character data, pore throat characteristic data Reason, determines the reservoir characteristic in the target work area.

In another embodiment for the system that this specification provides, first CT scanner and first hole Tester is seeped for testing the full diameter sample；

Second CT scanner, the second hole seep tester, nuclear magnetic resonance tester, high-pressure mercury tester, the first perseverance Ram compression mercury tester and the second constant speed Mercury-injection test instrument be used for the second level plunger sample made based on the level-one plunger sample into Row test；

Second petrographic microscope, first laser confocal scanning microscope and second laser confocal scanning are micro- Mirror is for testing the casting body flake made based on the second level plunger sample；

Second petrographic microscope, first field emission scanning electron microscope and the second field emission scanning electron microscope for pair Ordinary sheet based on second level plunger sample production is tested；

Second CT scanner is for testing the micro- brill sample made based on the second level plunger sample；

First scanning electron microscope, the second scanning electron microscope are used for the irregular sample based on the full diameter sample production It is tested；

First petrographic microscope is used to test the big thin slice containing crack based on the full diameter sample production.

In another embodiment for the system that this specification provides, the scanning accuracy of first CT scanner is arranged It is 20 μm, for being scanned to the full diameter sample；

The measuring accuracy that tester is seeped in first hole is set as 0.01 × 10^-3μm², for the full diameter sample into Row test；

It is 20 μm that the fracture aperture of first petrographic microscope, which obtains precision setting, for the big thin slice containing crack It is identified.

In another embodiment for the system that this specification provides, the scanning accuracy of second CT scanner is arranged Be 8 μm or 0.9 μm, for based on 8 μm of scanning accuracy scan the second level plunger sample and based on 0.9 μm scanning essence Degree scans micro- brill sample；

The porosity measuring accuracy that tester is seeped in second hole is set as 0.01%, permeability measuring accuracy and is set as 0.01×10^-3μm², for testing the second level plunger sample；

The matrix pores radius measuring accuracy of the first constant speed Mercury-injection test instrument is set as 10 μm, matrix pores radius point Cloth frequency test precision setting is 0.01%, for testing the second level plunger sample；

The second petrographic microscope matrix pores radius measuring accuracy is set as 20 μm, Areal porosity measuring accuracy is set as 0.1%, matrix pores chink content measuring precision setting is 0.1%, tests essence for the matrix pores radius based on 20 μm Degree, 0.1% Areal porosity measuring accuracy the casting body flake is identified, and based on 0.1% matrix pores chink Content measuring precision identifies the ordinary sheet；

The matrix pores radius measuring accuracy of the first laser confocal scanning microscope is set as 2 μm, for institute Casting body flake is stated to be identified；

The matrix pores radius measuring accuracy of first scanning electron microscope is set as 5 μm, for the irregular sample It is scanned；

The matrix micropores gap radius measuring accuracy of first field emission scanning electron microscope is set as 0.01 μm, for described Ordinary sheet is scanned.

In another embodiment for the system that this specification provides, the average pore throat half of the nuclear magnetic resonance tester Diameter measuring accuracy is set as 0.01 μm, for testing the second level plunger sample；

The average pore throat radius measuring accuracy of the high-pressure mercury tester is set as 0.001 μm, replacement pressure test essence Degree is set as 0.001MPa, for testing the second level plunger sample；

The matrix throat radius measuring accuracy of the second constant speed Mercury-injection test instrument is set as 0.1 μm, matrix throat radius Distribution frequency is set as 0.01%, for testing the second level plunger sample；

The matrix pores radius measuring accuracy of second scanning electron microscope is set as 5 μm, for the irregular sample It is scanned；

The matrix throat radius measuring accuracy of second field emission scanning electron microscope is set as 0.001 μm, for described Ordinary sheet is scanned；

The matrix throat radius measuring accuracy of the second laser confocal scanning microscope is set as 0.1 μm, for pair The casting body flake is scanned.

A kind of Fractured pore type tight sandstone reservoir feature determination side that this specification one or more embodiment provides Method, apparatus and system can carry out the experimental analysis of system, according to experimental analysis to same rock sample sample by gradual mode As a result FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic in target work area are determined.Pass through comprehensive analysis FRACTURE CHARACTERISTICS, hole again Feature and pore throat characteristic determine the reservoir characteristic in the target work area.Using each embodiment of this specification, can more be System accurately determines the reservoir characteristics such as pore structure, origin mechanism, Reservoir Fracture level and the distribution of tight sandstone reservoir.

Detailed description of the invention

In order to illustrate more clearly of this specification embodiment or technical solution in the prior art, below will to embodiment or Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only The some embodiments recorded in this specification, for those of ordinary skill in the art, in not making the creative labor property Under the premise of, it can also be obtained according to these attached drawings other attached drawings.In the accompanying drawings:

Fig. 1 is the stream that a kind of Fractured pore type tight sandstone reservoir feature that this specification provides determines embodiment of the method Journey schematic diagram；

Fig. 2 is that the microstructure of the Fractured pore type tight sandstone reservoir in one embodiment that this specification provides is real Test analysis flow chart diagram；

Fig. 3 be the Fractured pore type tight sandstone reservoir in another embodiment for providing of this specification structure and at Rock sequence is multiple dimensioned, the gradual characterization result schematic diagram of multi-parameter；

Fig. 4 is that the crack of the Fractured pore type tight sandstone reservoir in another embodiment that this specification provides is opened Spend frequency distribution and fracture pore spatial structure characteristic schematic diagram；

Fig. 5 is the matrix pores of the Fractured pore type tight sandstone reservoir in another embodiment that this specification provides Radius frequency and connectivity distribution map；

Fig. 6 is the matrix pores of the Fractured pore type tight sandstone reservoir in another embodiment that this specification provides The continuously distributed spectrum schematic diagram of radius；

Fig. 7 is the matrix pore throat of the Fractured pore type tight sandstone reservoir in another embodiment that this specification provides Radius frequency distribution；

Fig. 8 is that another Fractured pore type tight sandstone reservoir feature that this specification provides determines embodiment of the method Flow diagram；

Fig. 9 is a kind of mould for Fractured pore type tight sandstone reservoir feature determining device embodiment that this specification provides Block structure schematic diagram；

Figure 10 is another Fractured pore type tight sandstone reservoir feature determining device embodiment that this specification provides Modular structure schematic diagram；

Figure 11 is the structural representation that a kind of fracture pore type tight sandstone reservoir feature that this specification provides determines system Figure.

Specific embodiment

In order to make those skilled in the art more fully understand the technical solution in this specification, below in conjunction with this explanation Attached drawing in book one or more embodiment carries out the technical solution in this specification one or more embodiment clear, complete Site preparation description, it is clear that described embodiment is only specification a part of the embodiment, instead of all the embodiments.Based on saying Bright book one or more embodiment, it is obtained by those of ordinary skill in the art without making creative efforts all The range of this specification example scheme protection all should belong in other embodiments.

Fractured pore type tight sandstone reservoir will generally undergo complicated diagenesis in very long earth history period And tectonic reworking, typically exhibit the spies such as buried depth is big, diagenesis intensity is high, physical property is poor, complex pore structure, crack relatively development Point has unique microcosmic reservoir space structure and seepage flow characteristics.Such reservoir has dual media feature, matrix pores conduct The main space of Oil And Gas Occurrence, and crack is the key factor linked up matrix pores, improve oil-production capacity, Fracture-Pore-venturi Effective configuration be oil/gas well stable high yield pacing factor, but different reservoir space difference in size are significant, from micron order to Nanoscale, the complicated multiplicity of space configuration type.

Although being ground currently, having to tight sandstone reservoir pore structure, origin mechanism, Reservoir Fracture level and distribution characteristics Study carefully, but often separately studies in crack with hole, structure feature difference and configuration relation between cannot reflecting.And crack Pore type tight sandstone reservoir microstructure heterogeneity is strong, and a large amount of experiment analysis results are based on qualitative or statistical analysis, Multi-solution is strong, is difficult unified study and recognizes.

Correspondingly, this specification embodiment, which provides a kind of Fractured pore type tight sandstone reservoir feature, determines method, The experimental analysis that can carry out system by gradual mode to same rock sample sample, determines target according to experiment analysis results FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic in work area.Pass through comprehensive analysis FRACTURE CHARACTERISTICS, pore character and pore throat characteristic again Determine the reservoir characteristic of the target area.Using each embodiment of this specification, densification more systematic can be accurately determined out The features such as porous structure in sandstone reservoirs, origin mechanism, Reservoir Fracture level and distribution reduce more solutions of reservoir characteristic analysis result Property.

Fig. 1 is that a kind of Fractured pore type tight sandstone reservoir feature that this specification provides determines embodiment of the method Flow diagram.Although present description provides as the following examples or method operating procedure shown in the drawings or apparatus structure, But after may include more in the method or device or part merging based on routine or without creative labor more Few operating procedure or modular unit.In the step of there is no necessary causalities in logicality or structure, these steps Execution sequence or the modular structure of device are not limited to this specification embodiment or execution shown in the drawings sequence or modular structure.Institute Device, server or the end product of method or modular structure in practice are stated in application, can be according to embodiment or attached drawing Shown method or modular structure carry out sequence execution or parallel execution (such as the ring of parallel processor or multiple threads Border, the even implementation environment including distributed treatment, server cluster).

Specific one embodiment is as shown in Figure 1, the pore type tight sandstone reservoir feature determination side that this specification provides In one embodiment of method, the method may include:

S2: the FRACTURE CHARACTERISTICS in target work area, hole are determined according to the analysis result of the same rock sample sample to target work area Feature and pore throat characteristic.

Core sample can be acquired from target work area in advance, and square from Petrographic Features, FRACTURE CHARACTERISTICS and oil-gas possibility etc. Description such as is carried out, takes pictures at the work in face, to primarily determine the reservoir essential characteristic in target work area.Wherein, the Petrographic Features It may include color, lithology, sedimentary structure, the compactness extent etc. of core sample；The FRACTURE CHARACTERISTICS may include that is produced from crack Shape, quantity, Filling Characteristics and phase are inferior；The oil-gas possibility may include oily type, rank and spatial class profile etc.. On the basis of above-mentioned analysis result, complete full diameter sample is chosen, and the sample lithology relative homogeneous of selection, crack are relatively sent out It educates, be able to reflect geologic characteristics and have preferable representative.

It is then possible to carry out experimental analysis to different rock sample samples, corresponding analysis result is obtained.Some embodiments In, fracture permeabgility, open degree, matrix pores radius, pore throat radius, filling operation, company can be such as determined by experimental analysis Then the supplemental characteristics such as the general character and slot apertures spatial structure characteristic determine target work by each Experiment Parameter data of comprehensive analysis FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic in area.

In one embodiment of this specification, it can be made of progressive manner for reality based on the rock sample sample Test multistage, the multiple dimensioned rock sample sample of analysis, comprising:

Choose full diameter sample；

Micro- brill sample is drilled through from the second level plunger sample；

Sample making big thin slice containing crack is cut from the fracture development position of the full diameter sample.

The microstructure experimental analysis flow chart of Fig. 2 expression Fractured pore type tight sandstone reservoir.As shown in Fig. 2, can To choose completely suitable full diameter sample previously according to Petrographic Features, FRACTURE CHARACTERISTICS and oil-gas possibility, then according to such as Fig. 2 Shown process carries out drilling through and preparing for sample.Correspondingly, the sample drill through and preparation may include 5 sample scales, Specific manifestation are as follows:

First is that choosing diameter 10cm, the full diameter sample a of 30~40cm of length is used for full-hole core physical property, crack CT scan Experimental analyses such as (25 μm).

Second is that choosing representative position and drilling through diameter is 2.5cm, length after the completion of experimental analysis step needed for full diameter sample Degree is 3~8cm level-one plunger sample b₁-b₂, then cut that diameter is 2.5cm, length is 3~5cm second level plunger sample b_11/b₂₁ The experimental analyses such as test, high-pressure mercury, nuclear magnetic resonance, constant speed pressure mercury are seeped for matrix pores CT scan (8 μm), hole；In level-one Plunger sample b₁On cut sample b₁₂/b₂₂Thin slice is made for casting body flake, laser co-focusing, ordinary sheet, electron probe, field hair The parallel laboratory tests such as scanning electron microscope analysis is penetrated, sample specification can be diameter 25mm, thickness 5mm.

Third is that drilling through micro- brill sample of diameter 3mm, 8~10mm of length needed for plunger sample after the completion of experimental analysis step b₁₁₁/b₁₁₂/b₁₁₃For matrix pores CT scan (0.9 μm).

Fourth is that selection representative locations, which are struck, takes irregular sample c after the completion of experimental analysis step needed for full diameter sample₁/c₂ For scanning electron microscope analysis, sample maximum gauge is less than 20mm, maximum gauge is less than 10mm and has fresh section.

Fifth is that choosing fracture development position after the completion of experimental analysis step needed for full diameter sample and cutting sample d₁/d₂Production It containing the big thin slice in crack, is observed for thin slice containing crack, sample specification is 50mm × 50mm × 5mm.

It should be noted that it is above-mentioned cut sample during, it is only for selected corresponding to multiple experimental analyses Cutting samples, the sample characteristics of each same sample such as multiple level-one plunger samples, second level plunger sample, micro- brill sample does not have specific difference It is required that being conducive to carry out corresponding experimental analysis.

Based on single rock sample, by it is above-mentioned it is gradual in the way of make for the rock sample sample to experimental analysis, can Multiple dimensioned analysis is carried out based on single rock sample fracture feature, pore character and pore throat characteristic to realize, thus While reducing reservoir characteristic analysis multi-solution, the reservoir characteristic analysis result accuracy finally obtained can be further improved.

It, can be using following manner to multistage, the multiple dimensioned rock sample sample in another embodiment of this specification Carry out the FRACTURE CHARACTERISTICS that experimental analysis determines target work area:

Fracture permeabgility data are obtained using rock core gas permeability test analytic approach based on the full diameter sample；

Based on the full diameter sample using rock core crack industry CT scan (as micron three-dimensional imaging X-ray is micro- Mirror) it obtains the crack system of rock, occurrence, open degree, development length, filling operation, be connected to supplemental characteristics and the slot apertures such as ratio Three-D space structure feature；

Based on orientation open degree, the filling species for obtaining crack using microscopic examination analysis containing the big thin slice in crack The supplemental characteristics such as type, filling operation and the two-dimensional surface feature for cutting relationship.

In some embodiments, experimental analysis first can be carried out to full diameter rock sample sample, then, then from full diameter rock sample The big thin slice containing crack is obtained on sample, and carries out microscopic examination experimental analysis.

It can be by following according to the experimental analysis process provided in such as Fig. 2 for obtaining multistage rock sample sample in Fig. 2 Experimental analysis step carries out FRACTURE CHARACTERISTICS experimental analysis:

One, Physical Property Analysis is carried out to full diameter sample, obtains fracture permeabgility supplemental characteristic；

Two, 20 μm of crack CT scan are carried out to full diameter sample, obtains crack system, open degree, filling operation, connection ratio Etc. parameters and slot apertures spatial structure characteristic.

Three, it is cut from full diameter sample containing the big thin slice d in crack₁/d₂, under the microscope to the big thin slice d containing crack₁/ d₂It is observed, obtains the supplemental characteristics such as crack open degree, charges type, filling operation.

Each experiment analysis results are obtained, such as analyze great Bao containing crack using the full diameter sample of CT scan and microscopic examination Two levels of piece quantitatively determine the parameters such as permeability, crack system, occurrence, open degree, development length, filling operation, connection ratio Data.As shown in Figure 3 and 4, full diametric hole infiltration and CT scan image, fractue spacing and blank map are given in Fig. 3.Fig. 4 Indicate crack open degree frequency distribution (left figure) and the crack hole of the fracture pore type tight sandstone reservoir that crack CT scan obtains Gap spatial structure characteristic (upper and lower two figure in right side) schematic diagram, wherein Frequency indicates frequency, and Radius indicates crack half Diameter, Ks2-2-4 to Ks208 indicate different well logging positions.

It is then possible to the experiment analysis results under two kinds of comprehensive analysis different sample scales, the determination rock of accurate quantitative analysis Fracture parameters data.And can also from full diameter sample, containing under the different sample scales of two kinds of the big thin slice in crack, utilize CT scan And microscope carries out qualitative analysis, obtains the three-D space structure of rock fracture and cuts the two-dimensional surface feature of relationship.In turn Under the constraint of rock fracture parameters, two dimension, three-dimensional space feature in conjunction with rock fracture, the comprehensive crack spy for determining rock Sign.

Using the scheme of above-described embodiment, by never with many levels such as sample scale, different analysis precisions to rock FRACTURE CHARACTERISTICS analyzed, FRACTURE CHARACTERISTICS precision of analysis can be improved.

It, can be using following manner to multistage, the multiple dimensioned rock sample sample in another embodiment of this specification Carry out the pore character that experimental analysis determines target work area:

It is long greater than 8 μm of matrix pores using 8 μm of CT resolution ratio rock sample scanning acquisition radiuses based on the second level plunger sample Axis, minor axis radius frequency distribution, connectivity data and three-dimensional spatial distribution feature；

Method of testing, which is seeped, using gas orifice based on the second level plunger sample obtains matrix porosity, matrix permeability data；

It is scanned based on micro- brill sample using 0.9 μm of CT resolution ratio (such as micron three-dimensional imaging X-ray microscope) It is special that rock sample obtains matrix pores long axis, minor axis radius frequency distribution, connectivity data and three-dimensional spatial distribution greater than 0.9 μm Sign；

It is identified based on the casting body flake and obtains matrix pores type, Areal porosity and plane configuration (long axis, short axle) two dimension Panel data；

Based on the casting body flake using laser confocal scanning obtain matrix pores long axis, minor axis radius frequency distribution and The two-dimensional surface data of connectivity；

Matrix pores chink content, chink type are obtained based on the ordinary sheet；

The filling of matrix micropores gap (radius is less than 0.9 μm) is obtained using scanning electron microscope scanning based on the irregular sample The two-dimensional surface data of feature and connectivity.

In some embodiments, plunger sample, micro- brill sample, casting body flake and general can be obtained from full diameter rock sample sample Logical thin slice carries out, and carries out gradually experimental analysis by sample sequence.As shown in Fig. 2, according to the experimental analysis stream provided in such as Fig. 2 Journey can carry out void characteristics experimental analysis by following experimental analysis steps:

One, from level-one plunger sample b₁On cut second level plunger sample b₁₁, then, to second level plunger sample b₁₁Carry out 8 μ of matrix pores MCT scanning obtains parameters and the spatial distribution characteristics such as matrix pores radius frequency distribution of the radius greater than 8 μm, connectivity.

Two, to second level plunger sample b₁₁It carries out hole and seeps test, obtain the supplemental characteristics such as matrix porosity, matrix permeability.

Three, from level-one plunger sample b₂On cut second level plunger sample b₂₁, to the second level plunger b₂₁It is obtained using constant speed pressure mercury Average pore radius, pore radius frequency distribution data.It should be noted that high-pressure mercury experiment or constant pressure pressure mercury experiment are to sample Product have destructiveness, can be first to the second level plunger b when actual experiment₂₁Carry out CT scan, test and nuclear magnetic resonance are seeped in hole After experiment, further to b₂₁Constant pressure pressure mercury experiment is carried out, average pore radius, pore radius frequency distribution data are obtained.Into When row constant pressure presses mercury experiment, b can be utilized by adjusting experiment parameter₂₁Obtain the hole of sample and the supplemental characteristic of pore throat.

Four, from second level plunger sample b₁₁On drill through micro- brill sample b of diameter 3mm, 8~10mm of length₁₁₁/b₁₁₂/b₁₁₃, then, To micro- brill sample b₁₁₁/b₁₁₂/b₁₁₃0.9 μm of CT scan of matrix pores is carried out, the matrix pores that radius is greater than 0.9 μm are obtained The parameters such as radius frequency distribution, connectivity and spatial distribution characteristic.

Five, from level-one plunger sample b₁On cut thin slice b₁₂, utilize thin slice b₁₂Make casting body flake.The casting body flake can To include that coloured liquid glue is injected to blowhole space under vacuum pressed, the rock being milled into after liquid adhesive curing is thin Piece.The casting body flake is identified, the supplemental characteristics such as matrix pores type, Areal porosity are obtained.

Six, laser co-focusing experimental analysis is carried out to the casting body flake, obtains the frequency distribution of matrix pores radius and company The supplemental characteristics such as the general character.

Seven, from level-one plunger sample b₂On cut thin slice b₂₂, utilize thin slice b₂₂Make ordinary sheet.The ordinary sheet is straight It connects to the thin slice b₂₂The petrographic thin section that can be used for microscopic obtained after polishing processing.It reflects to ordinary sheet It is fixed, obtain the supplemental characteristics such as chink content, chink type.

Eight, electron microscope analysis is scanned to the irregular sample, obtains matrix pores radius, Filling Characteristics and connectivity Equal supplemental characteristics.

Using above-mentioned testing scheme, matrix can be obtained by first carrying out CT scan and hole infiltration test to matrix sample The holistic distribution characteristics of hole.Then, then on the basis of obtained whole porosity distribution, matrix sample is carried out into one The constant-pressure mercury injection of step and thin section analysis obtain the matrix pores supplemental characteristic of accurate quantitative analysis.

Given as shown in Fig. 3, Fig. 5 and Fig. 6, in Fig. 3 Local C T scanning analysis figure (plunger sample and micro- brill sample), Filler analysis chart, matrix pores radius and connectivity analysis figure based on casting body flake.Fig. 5 gives 8 μm of CT scan and obtains Fracture pore type tight sandstone reservoir matrix pores radius frequency and connectivity distribution map.It is set forth in the upper figure of Fig. 6 9 μm of CT scan experiment analysis results of matrix pores and constant-rate mercury injection result schematic diagram；It is set forth in Fig. 6 following figure Laser co-focusing microscopic analysis result (left figure) and field emission scanning electron microscope analyze result (right figure) schematic diagram.By in Fig. 6 Each data can establish the continuously distributed spectrum of reservoir matrix hole, from Fig. 6 can quantitatively determine it is each well logging region hole Gap radius distribution frequency, and can be divided according to pore radius, it is divided into micropore, pore, mesoporous etc..

Using the scheme of above-described embodiment, by never with many levels such as sample scale, different analysis precisions to rock Pore character analyzed, thus the porosity distribution for determining reservoir of accurate quantitative analysis.

It, can be using following manner to multistage, the multiple dimensioned rock sample sample in another embodiment of this specification Carry out the pore throat characteristic that experimental analysis determines target work area, comprising:

The radius distribution of pore throat containing fluid frequency data are obtained using nuclear magnetic resonance based on the second level plunger sample；

Pore throat radius frequency distribution data is obtained using constant speed pressure mercury based on the second level plunger sample；

Replacement pressure and whole pore throat radius frequency distribution are obtained using high-pressure mercury test based on the second level plunger sample Data；

The visualized data of hole throat radius and connectivity is obtained using Flied emission scanning based on the ordinary sheet；

The visualized data of throat radius and connectivity is obtained using laser confocal scanning based on the casting body flake.

In some embodiments, can be obtained from full diameter rock sample sample plunger sample, casting body flake and ordinary sheet into Row, and gradually experimental analysis is carried out by sample sequence.It, can be with as shown in Fig. 2, according to the experimental analysis process provided in such as Fig. 2 Pore throat characteristic experimental analysis is carried out by following experimental analysis steps:

One, to the second level plunger sample b₁₁High-pressure mercury experiment is carried out, replacement pressure and pore throat radius frequency distribution are obtained Equal supplemental characteristics.

Two, to the second level plunger sample b₂₁Nuclear magnetic resonance experiment is carried out, pore throat radius distribution frequency parameter data are obtained.

Three, to the second level plunger sample b₂₁Constant speed pressure mercury experiment is carried out, average throat radius, throat radius frequency point are obtained The supplemental characteristics such as cloth.

Four, field emission scanning electron microscope analysis is carried out to the ordinary sheet, obtain micropore radius, throat radius and be connected to The supplemental characteristics such as property.

Five, laser co-focusing experiment is carried out to the casting body flake, obtains the supplemental characteristics such as throat radius and connectivity.

If Fig. 3 and Fig. 7 is indicated, it is special that the filling that electron microscope analysis acquisition is scanned to irregular sample is given in Fig. 3 Analysis chart is levied, high-pressure mercury (left figure) and the lower reservoir matrix pore throat half obtained of constant pressure pressure mercury (right figure) test are given in Fig. 7 Diameter frequency distribution.

When it is implemented, the pore character obtained when hole characterization experiments can be combined to analyze as a result, further progress rock The pore throat characteristic of sample is analyzed, obtain each experiment analysis results, and comprehensive each experiment analysis results accurate quantitative analysis determines reservoir The pore throat characteristics such as pore throat radius, pore throat radius frequency distribution.

S4: the reservoir structure in the target work area is determined according to the FRACTURE CHARACTERISTICS, pore character and pore throat characteristic.

What can be obtained by experiment in analytical procedure S2 is used to characterize FRACTURE CHARACTERISTICS, pore character and pore throat characteristic Each supplemental characteristic determines the Microstructure of Reservoirs in the target work area.

By analyzing the experimental image provided in examples detailed above, quantitative experimental data it is found that using this specification above-mentioned one The Progressive Systemic experimental analysis that a or multiple embodiment kinds provide quantitatively can determine matrix porosity, matrix Permeability, fracture permeabgility, fracture aperture, pore radius, pore throat radius etc., it is then possible to which further comprehensive respectively observe The microstructure characteristics such as crack, interstitial space distribution, accurately determine the reservoir characteristic in target work area.

And in this specification embodiment, by the way that sample, by entirety to part, gradually analysis obtains parameters, Ke Yiduo FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic of the gradual determination reservoir of scale, multi-parameter form Fracture-Pore-venturi Multiple dimensioned, three-dimensional network-in-dialing system improves reservoir characteristic analysis knot so as to reduce the multi-solution of reservoir characteristic analysis The accuracy of fruit and comprehensive.

The above scheme that this specification embodiment provides is based on same rock sample, right by designing gradual experimental program Sample is by entirety to part, and gradually analysis obtains parameters, thus multiple dimensioned, multi-parameter it is gradual determine splitting for reservoir Feature, pore character and pore throat characteristic are stitched, the multi-solution for determining reservoir characteristic using kinds of experiments analysis result is reduced.It goes forward side by side One step carries out quantitative analysis to each parameter, improves the accuracy that reservoir characteristic determines.To be provided using this specification embodiment Scheme, can more accurately and effectively determine the reservoir characteristic in target work area, improve the understanding to target work area reservoir characteristic Accuracy.

Another Fractured pore type tight sandstone reservoir feature provided Fig. 8 shows this specification determines embodiment of the method Flow diagram.As shown in figure 8, the method can also include:

S6: determine the evaluating reservoir in target work area as a result, the Comprehensive Evaluation of Reservoir mark according to Comprehensive Evaluation of Reservoir standard Standard is determined according to the reservoir characteristic.

It can be according to lithology, matrix porosity, matrix permeability, fracture permeabgility, fracture aperture, Areal porosity, matrix hole Gap radius, replacement pressure, average pore throat radius, chink content, microstructure characteristic, assessment parameter establish reservoir synthesis Evaluation criterion.The evaluation result of research area's reservoir is determined according to the Comprehensive Evaluation of Reservoir standard.

In some embodiments, it is referred to Oil/Gas Reservoir Assessment method professional standard, uses for reference similar area and research area Existing research achievement considers the particularity and reservoir tested productivity feature of fracture pore type tight sandstone reservoir microstructure.? On the basis of the experiment of above-mentioned characterization, preferably lithology, matrix porosity, matrix permeability, fracture permeabgility, fracture aperture, face out Porosity, matrix pores radius, replacement pressure, average pore throat radius, chink content, microstructure characteristic, overall merit etc. 12 Item parameter establishes research area's Comprehensive Evaluation of Reservoir standard, is divided into 4 classes, wherein I class, II class, III class are effective reservoir, IV class is non- Reservoir.

As shown in table 1, a kind of Fractured porosity reservoir comprehensive value model is given in table 1, it can commenting according to table 1 Price card standard carries out Comprehensive Evaluation of Reservoir to research area.Such as can according to the crack of reservoir, hole, pore throat supplemental characteristic, in conjunction with The microstructure characteristic of lithology and reservoir, overall merit go out to study the quality of area's reservoir, provide whether reservoir is conducive to explore The valid conclusion of exploitation.

By further division evaluation criterion, the quantitative assessment of the reservoir to research area may be implemented, be conducive to further It instructs oil-gas reservior's exploration & exploitation to study, provides accurately and effectively foundation for oil-gas reservior's exploration & exploitation.

1 Fractured porosity reservoir comprehensive value model of table

All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment Dividing may refer to each other, and the highlights of each of the examples are differences from other embodiments.Specifically it is referred to The description of aforementioned relevant treatment related embodiment, does not do repeat one by one herein.

It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can With or may be advantageous.

A kind of Fractured pore type tight sandstone reservoir feature determination side that this specification one or more embodiment provides Method can carry out the experimental analysis of system by gradual mode to same rock sample sample, be determined according to experiment analysis results FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic in target work area.Pass through comprehensive analysis FRACTURE CHARACTERISTICS, pore character and hole again Larynx feature determines the reservoir characteristic in the target work area.Using each embodiment of this specification, can with it is more systematic it is accurate really Make the reservoir characteristics such as pore structure, origin mechanism, Reservoir Fracture level and the distribution of tight sandstone reservoir.

Determine that method, this specification are one or more based on Fractured pore type tight sandstone reservoir feature described above Embodiment also provides a kind of Fractured pore type tight sandstone reservoir feature determining device.The device may include using System, software (application), module, component, server of this specification embodiment the method etc. simultaneously combine necessary implement firmly The device of part.Based on same innovation thinking, the device in one or more embodiments that this specification embodiment provides is for example following Embodiment described in.Since the implementation that device solves the problems, such as is similar to method, this specification embodiment is specifically filled The implementation set may refer to the implementation of preceding method, and overlaps will not be repeated.It is used below, term " unit " or The combination of the software and/or hardware of predetermined function may be implemented in " module ".Although device is preferably described in following embodiment It is realized with software, but the realization of the combination of hardware or software and hardware is also that may and be contemplated.Specifically, Fig. 9 Indicate a kind of modular structure signal for Fractured pore type tight sandstone reservoir feature determining device embodiment that specification provides Figure, such as Fig. 9, the apparatus may include:

Parameter attribute determining module 102 can be used for true according to the analysis result of the same rock sample sample to target work area Set the goal FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic in work area；

Reservoir characteristic determining module 104 can be used for being determined according to the FRACTURE CHARACTERISTICS, pore character and pore throat characteristic The reservoir characteristic in the target work area.

Figure 10 indicates another Fractured pore type tight sandstone reservoir feature determining device embodiment that specification provides Modular structure schematic diagram.As shown in Figure 10, in another embodiment of this specification, described device can also include:

Evaluation result determining module 106 can be used for determining the storage in target work area according to the Comprehensive Evaluation of Reservoir standard Layer evaluation result, the Comprehensive Evaluation of Reservoir standard are determined according to the reservoir characteristic, comprising:

It should be noted that device described above can also include other embodiment party according to the description of embodiment of the method Formula.Concrete implementation mode is referred to the description of related method embodiment, does not repeat one by one herein.

A kind of Fractured pore type tight sandstone reservoir feature that this specification one or more embodiment provides determines dress It sets, the experimental analysis of system can be carried out by gradual mode to same rock sample sample, determined according to experiment analysis results FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic in target work area.Pass through comprehensive analysis FRACTURE CHARACTERISTICS, pore character and hole again Larynx feature determines the reservoir characteristic in the target work area.Using each embodiment of this specification, can with it is more systematic it is accurate really Make the reservoir characteristics such as pore structure, origin mechanism, Reservoir Fracture level and the distribution of tight sandstone reservoir.

Method or apparatus described in above-described embodiment that this specification provides can realize that business is patrolled by computer program It collects and records on a storage medium, the storage medium can be read and be executed with computer, realize this specification embodiment institute The effect of description scheme.Therefore, this specification also provides a kind of Fractured pore type tight sandstone reservoir feature and determines equipment, wraps The memory of processor and storage processor executable instruction is included, realizes to include following when described instruction is executed by the processor Step:

The storage medium may include the physical unit for storing information, usually by after information digitalization again with benefit The media of the modes such as electricity consumption, magnetic or optics are stored.It may include: that letter is stored in the way of electric energy that the storage medium, which has, The device of breath such as, various memory, such as RAM, ROM；The device of information is stored in the way of magnetic energy such as, hard disk, floppy disk, magnetic Band, core memory, magnetic bubble memory, USB flash disk；Using optical mode storage information device such as, CD or DVD.Certainly, there are also it Readable storage medium storing program for executing of its mode, such as quantum memory, graphene memory etc..

It should be noted that equipment described above can also include other embodiment party according to the description of embodiment of the method Formula.Concrete implementation mode is referred to the description of related method embodiment, does not repeat one by one herein.

A kind of Fractured pore type tight sandstone reservoir feature described in above-described embodiment determines equipment, can be to same rock All product carry out the experimental analysis of system by gradual mode, determine that the crack in target work area is special according to experiment analysis results Sign, pore character and pore throat characteristic.The mesh is determined by comprehensive analysis FRACTURE CHARACTERISTICS, pore character and pore throat characteristic again Mark the reservoir characteristic in work area.Using each embodiment of this specification, tight sandstone reservoir can be accurately determined with more systematic The reservoir characteristics such as pore structure, origin mechanism, Reservoir Fracture level and distribution.

In one or more embodiment of this specification, a kind of Fractured pore type tight sandstone reservoir feature is also provided Determine system.Figure 11 is that the reservoir characteristic in one or more embodiment of this specification determines system schematic.Such as Figure 11 institute Show, the system may include that FRACTURE CHARACTERISTICS determines that subsystem 20, pore character determine that subsystem 40, pore throat characteristic determine subsystem System 60 and central processing unit 80.

In some embodiments, the FRACTURE CHARACTERISTICS determines that subsystem 20 may include the first CT scanner 201, the first hole Seep measuring instrument 202, the first petrographic microscope 203.The FRACTURE CHARACTERISTICS determines that subsystem 20 can be used for acquiring target work area The FRACTURE CHARACTERISTICS data of rock sample sample.

In some embodiments, the pore character determines that subsystem 40 may include the second CT scanner 401, the second hole Seep tester 402, the first constant speed Mercury-injection test instrument 403, the second petrographic microscope 404, first laser confocal scanning microscope 405, the first scanning electron microscope 406, the first field emission scanning electron microscope 407.The pore character determines that subsystem 40 can be used for adopting Collect the pore character data of the rock sample sample.

In some embodiments, the pore throat characteristic determines that subsystem 60 may include high-pressure mercury tester 601, nuclear-magnetism It resonates tester 602, the second constant speed Mercury-injection test instrument 603, the second scanning electron microscope 604, the second field emission scanning electron microscope 605, the Dual-laser confocal scanning microscope 606.The pore throat characteristic determines that subsystem 60 can be used for acquiring the rock sample sample Pore throat characteristic data.

In some embodiments, the central processing unit (Central Processing Unit, CPU) is one piece of super large The integrated circuit of scale.The central processing unit 80 may include arithmetic unit (arithmetic logical unit, ALU, Arithmetic Logic Unit) and cache memory (Cache) and realize the data (Data) that contact between them, control and state Bus (Bus) etc..

The central processing unit 80 can be used for the FRACTURE CHARACTERISTICS data, pore character data, pore throat characteristic data It is handled, determines the reservoir characteristic in the target work area.

This specification above system is based on same rock sample sample, special to the crack of rock sample simultaneously using kinds of experiments equipment Sign, pore character, pore throat characteristic are analyzed comprehensively, can reduce the multi-solution of reservoir characteristic analysis, and it is true to improve reservoir characteristic Determine accuracy.

As shown in Fig. 2, the rock sample sample may include full diameter sample, the level-one based on the full diameter sample production Plunger sample, irregular sample, the big thin slice containing crack, second level plunger sample, ordinary sheet, casting based on level-one plunger sample production Body thin slice, micro- brill sample based on second level plunger sample preparation.

The preparation of sample can be implemented with reference to above-described embodiment, be not described herein.

Correspondingly, in one or more embodiment of this specification, first CT scanner and first hole Seeping tester can be used for testing the full diameter sample.

Second CT scanner, the second hole seep tester, nuclear magnetic resonance tester, high-pressure mercury tester, the first perseverance Ram compression mercury tester and the second constant speed Mercury-injection test instrument can be used for the second level plunger made based on the level-one plunger sample Sample is tested.

Second petrographic microscope, first laser confocal scanning microscope and second laser confocal scanning are micro- Mirror can be used for testing the casting body flake made based on the second level plunger sample.

Second petrographic microscope, first field emission scanning electron microscope and the second field emission scanning electron microscope can be used It is tested in the ordinary sheet made based on the second level plunger sample.

Second CT scanner can be used for testing the micro- brill sample made based on the second level plunger sample.

First petrographic microscope can be used for carrying out the big thin slice containing crack based on the full diameter sample production Test.

First scanning electron microscope, the second scanning electron microscope can be used for based on the irregular of the full diameter sample production Sample is tested.

The above-mentioned Experiment Analysis System that this specification embodiment provides is based on same rock sample, using above-mentioned gradual Mode make for the rock sample sample to experimental analysis.Then, then the production order based on rock sample sample, successively using corresponding Experimental facilities to the FRACTURE CHARACTERISTICS of rock sample, pore character and pore throat characteristic from multiple scales carry out asymptotic analysis.To The experiment analysis results of multiple scales can be further integrated, determine target while reducing reservoir characteristic analysis multi-solution The reservoir characteristic in work area further increases the reservoir characteristic precision of analysis finally obtained.

In one or more embodiment of this specification, the scanning accuracy of first CT scanner 201 be can be set It is 20 μm, for being scanned to the full diameter sample；

The measuring accuracy that tester 202 is seeped in first hole can be set to 0.01 × 10^-3μm², for described complete straight Diameter sample is tested；

The identification precision of first petrographic microscope 203 can be set to 20 μm, for identifying the great Bao containing crack Piece.

In some embodiments, first CT scanner 201 can be swept using " customizing V ︱ tome ︱ x s " industry CT Retouch instrument.Fracture aperture scanning accuracy can be set to 20 μm.First CT scanner 201 can be based on 20 μm of fracture aperture Scanning accuracy scans the full diameter sample, obtain the crack system of rock sample, occurrence, open degree, development length, filling operation, Supplemental characteristics and the slot apertures three-D space structure features such as connection ratio.

Measuring instrument 202 is seeped in first hole can cover body opening infiltration combined measuring instrument of calming the anger using " FYKS-3 ".Crack infiltration Rate measuring accuracy can be set to 0.01 × 10^-3μm².Measuring instrument 202 is seeped in first hole can be based on 0.01 × 10^-3μm²'s Fracture permeabgility measuring accuracy is scanned the full diameter sample, obtains the data such as the fracture permeabgility of rock sample.

First petrographic microscope 203 can use " Leica DM4500P " petrographic microscope.Fracture aperture obtains essence Degree can be set to 20 μm.First petrographic microscope 203 can obtain precision based on 20 μm of fracture aperture and contain to described The big thin slice in crack is identified that corresponding filling degree of fractures estimation deviation can be set to 5%, is opened with obtaining the orientation in crack The supplemental characteristics such as Qi Du, charges type, filling operation and the two-dimensional surface feature etc. for cutting relationship.

In one or more embodiment of this specification, the scanning accuracy of second CT scanner 401 be can be set Be 8 μm or 0.9 μm, for based on 8 μm of scanning accuracy scan the second level plunger sample and based on 0.9 μm scanning essence Degree scans micro- brill sample；

The porosity measuring accuracy that tester 402 is seeped in second hole can be set to 0.01%, permeability measuring accuracy It is set as 0.01 × 10^-3μm², for testing the second level plunger sample；

The matrix pores radius measuring accuracy of the first constant speed Mercury-injection test instrument 403 can be set to 10 μm, matrix hole Gap radius distribution frequency test precision setting is 0.01%, for testing the second level plunger sample；

Second petrographic microscope, the 404 matrix pores radius measuring accuracy can be set to 20 μm, Areal porosity test essence It is 0.1% that degree, which is set as 0.1%, matrix pores chink content measuring precision setting, for the matrix pores based on 20 μm half Diameter measuring accuracy, 0.1% Areal porosity measuring accuracy the casting body flake is identified, and based on 0.1% matrix hole Gap chink content measuring precision identifies the ordinary sheet；

The matrix pores radius measuring accuracy of the first laser confocal scanning microscope 405 can be set to 2 μm, use It is identified in the casting body flake；

The matrix pores radius measuring accuracy of first scanning electron microscope 406 can be set to 5 μm, for not advising to described Then sample is scanned；

The matrix micropores gap radius measuring accuracy of first field emission scanning electron microscope 407 can be set to 0.01 μm, use It is scanned in the ordinary sheet.

In some embodiments, second CT scanner 401 can be swept using " customizing V ︱ tome ︱ x s " industry CT Retouch instrument.Corresponding matrix pores radius scanning accuracy can be set to 8 μm or 0.9 μm.Second CT scanner 401 can be with The second level plunger sample is scanned based on 8 μm of scanning accuracies, obtain matrix pores long axis, minor axis radius frequency distribution, Connectivity data and three-dimensional spatial distribution feature.And it can be based on 0.9 μm of matrix pores radius scanning accuracy, to described micro- It bores sample to be scanned, obtains matrix pores long axis, minor axis radius frequency distribution, connectivity data and the three-dimensional greater than 0.9 μm Spatial distribution characteristic etc..

Tester 402 is seeped in second hole can cover body opening infiltration combined measuring instrument of calming the anger using " FYKS-3 ".Corresponding hole Porosity measuring accuracy can be set to 0.01%, and permeability measuring accuracy can be set to 0.01 × 10^-3μm².First hole Seeping tester 402 can be based on 0.01% porosity measuring accuracy and 0.01 × 10^-3μm²Permeability measuring accuracy to institute It states second level plunger sample to be tested, obtains the data such as matrix porosity, matrix permeability.

The first constant speed Mercury-injection test instrument 403 can use " ASPE 7300 " constant speed mercury injection apparatus.Corresponding matrix pores Radius measuring accuracy can be set to 10 μm, and matrix pores radius distribution frequency test precision can be set to 0.01%.It is described First constant speed Mercury-injection test instrument 403 can be based on 10 μm of matrix pores radius measuring accuracy and 0.01% matrix pores Radius distribution frequency test precision tests the second level plunger sample, obtains average pore radius, pore radius frequency point Cloth data.

Second petrographic microscope 404 can use " Leica DM4500P " petrographic microscope.Corresponding matrix pores Radius measuring accuracy can be set to 20 μm, and Areal porosity measuring accuracy can be set to 0.1%.Second petrographic microscope 404 can be based on 20 μm of matrix pores radius measuring accuracy and 0.1% Areal porosity measuring accuracy to the casting body flake It is identified, obtains matrix pores type, Areal porosity, plane configuration (long axis, short axle) two-dimensional surface data.And it is also based on 0.1% matrix pores chink content measuring precision identifies the ordinary sheet, obtains matrix pores chink and contains Measure data.

The first laser confocal scanning microscope 405 can use " Leica TCS SP5 " laser confocal scanning Microscope.Corresponding matrix pores radius measuring accuracy can be set to 2 μm.The first laser confocal scanning microscope 405 casting body flake can be scanned described in the matrix pores radius measuring accuracy based on 2 μm, corresponding matrix pores radius point Cloth frequency departure can be set to 1%, to obtain the two-dimensional surface of matrix pores long axis, minor axis radius frequency distribution and connectivity Data.

First scanning electron microscope 406 can use " Inspect S50 " scanning electron microscope energy disperse spectroscopy.Corresponding matrix pores Radius measuring accuracy can be set to 5 μm.First scanning electron microscope 406 can test essence based on 5 μm of matrix pores radius Degree is scanned the irregular sample, obtains the Filling Characteristics and connectivity of matrix micropores gap (radius is less than 0.9 μm) The data such as two-dimensional surface.

First field emission scanning electron microscope 407 can use " Apero " high-resolution Flied emission scanning electron microscope energy disperse spectroscopy. Corresponding matrix micropores gap radius measuring accuracy can be 0.01 μm.First field emission scanning electron microscope 407 can be based on 0.01 μm of matrix micropores gap radius measuring accuracy is scanned the ordinary sheet, acquisition matrix pores chink content, Chink type.

In one or more embodiment of this specification, the average pore throat radius of the high-pressure mercury tester 601 is surveyed Examination precision can be set to 0.001 μm, replacement pressure measuring accuracy can be set to 0.001MPa, for the second level plunger Sample is tested；

The average pore throat radius measuring accuracy of the nuclear magnetic resonance tester 602 can be set to 0.01 μm, for institute Second level plunger sample is stated to be tested；

The matrix throat radius measuring accuracy of the second constant speed Mercury-injection test instrument 603 can be set to 0.1 μm, matrix larynx Road radius distribution frequency can be set to 0.01%, for testing the second level plunger sample；

The matrix pores radius measuring accuracy of second scanning electron microscope 604 can be set to 5 μm, for not advising to described Then sample is scanned；

The matrix throat radius measuring accuracy of second field emission scanning electron microscope 605 can be set to 0.001 μm, be used for The ordinary sheet is scanned；

The matrix throat radius measuring accuracy of the second laser confocal scanning microscope 606 can be set to 0.1 μm, For being scanned to the casting body flake.

In some embodiments, the high-pressure mercury tester 601 can use " AutoPore IV 9505 " mercury injection apparatus.Phase The average pore throat radius measuring accuracy answered can be set to 0.001 μm, and replacement pressure measuring accuracy can be set to 0.001MPa. The high-pressure mercury tester 601 can drive pressure based on 0.001 μm of average pore throat radius measuring accuracy and 0.001MPa row Power measuring accuracy tests the second level plunger sample, obtains replacement pressure and pore throat radius frequency distribution data.

The nuclear magnetic resonance tester 602 can use " CoreSpec-1000NMR " core analyzer.It is corresponding average Pore throat radius measuring accuracy can be 0.01 μm.The nuclear magnetic resonance tester 602 can be based on 0.01 μm of average pore throat half Diameter measuring accuracy tests the second level plunger sample, obtains pore throat radius distribution frequency data.

The second constant speed Mercury-injection test instrument 603 can use " ASPE 7300 " constant speed mercury injection apparatus.Corresponding matrix venturi Radius measuring accuracy can be 0.1 μm, and matrix throat radius distribution frequency measuring accuracy can be 0.01%.Second constant speed Mercury-injection test instrument 603 can be based on 0.1 μm of matrix throat radius measuring accuracy and the distribution of 0.01% matrix throat radius Frequency test precision tests the second level plunger sample, obtains average throat radius, throat radius frequency distribution data.

Second scanning electron microscope 604 can use " Inspect S50 " scanning electron microscope energy disperse spectroscopy.Corresponding matrix pores Radius measuring accuracy can be set to 5 μm.Second scanning electron microscope 604 can test essence based on 5 μm of matrix pores radius Degree the irregular sample is scanned, with to sample Filling Characteristics and pore throat connectivity identification.Corresponding filling is special Levying evaluation result can be unfilled, half filling and full-filling, pore throat Connectivity Evaluation result can preferably, it is medium, poor etc..

Second field emission scanning electron microscope 605 can use " Apero " high-resolution Flied emission scanning electron microscope energy disperse spectroscopy. Corresponding matrix throat radius measuring accuracy can be set to 0.001 μm.Second field emission scanning electron microscope 605 can be based on 0.001 μm of matrix throat radius measuring accuracy is scanned the ordinary sheet, obtain micropore radius, throat radius and Connectivity data.

The second laser confocal scanning microscope 606 can use " Leica TCS SP5 " laser confocal scanning Microscope.Corresponding matrix throat radius measuring accuracy can be set to 0.1 μm.The second laser confocal scanning microscope 606 can be scanned the casting body flake based on 0.1 μm of matrix throat radius measuring accuracy, obtain throat radius and company General character data.

It should be noted that system described above can also include others according to the description of method or Installation practice Embodiment, concrete implementation mode are referred to the description of related method embodiment, do not repeat one by one herein.

The system that this specification said one or multiple embodiments provide, is based on same rock sample, and utilization is gradual Experimental system, to sample by entirety to part, gradually analysis obtains parameters, so that multiple dimensioned, multi-parameter determine FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic of reservoir reduce and determine the more of reservoir characteristic using kinds of experiments analysis result Xie Xing.And it is directed to the sample of different scale, based on different experimental facilities measuring accuracies, reservoir parameters are quantitatively determined, into One step improves the accuracy that reservoir characteristic determines.The system provided using this specification embodiment, can more accurate and effective Really set the goal the reservoir characteristic in work area, improves the understanding accuracy to target work area reservoir characteristic.

It should be noted that this specification device or system described above according to the description of related method embodiment also It may include other embodiments, concrete implementation mode is referred to the description of embodiment of the method, does not go to live in the household of one's in-laws on getting married one by one herein It states.All the embodiments in this specification are described in a progressive manner, and same and similar part is mutual between each embodiment Mutually referring to the highlights of each of the examples are differences from other embodiments.Especially for hardware+program For class, storage medium+program embodiment, since it is substantially similar to the method embodiment, so be described relatively simple, it is related Place illustrates referring to the part of embodiment of the method.

Although the FRACTURE CHARACTERISTICS mentioned in this specification example, pore character and pore throat characteristic etc. obtain, definition, hand over Mutually, the operations such as calculating, judgement and data description, still, this specification example is not limited to comply with standard data mould Situation described in type/template or this specification embodiment.Certain professional standards are retouched using customized mode or embodiment On the practice processes stated embodiment modified slightly also may be implemented examples detailed above it is identical, it is equivalent or it is close or deformation after The implementation result being anticipated that.Using the reality of the acquisitions such as these modifications or deformed data acquisition, storage, judgement, processing mode Example is applied, still may belong within the scope of the optional embodiment of this specification.

System, device, module or the unit that above-described embodiment illustrates can specifically realize by computer chip or entity, Or it is realized by the product with certain function.It is a kind of typically to realize that equipment is computer.Specifically, computer for example may be used Think personal computer, laptop computer, vehicle-mounted human-computer interaction device, cellular phone, camera phone, smart phone, individual Digital assistants, media player, navigation equipment, electronic mail equipment, game console, tablet computer, wearable device or The combination of any equipment in these equipment of person.

For convenience of description, it is divided into various modules when description apparatus above with function to describe respectively.Certainly, implementing this The function of each module can be realized in the same or multiple software and or hardware when specification one or more, it can also be with The module for realizing same function is realized by the combination of multiple submodule or subelement etc..Installation practice described above is only It is only illustrative, for example, in addition the division of the unit, only a kind of logical function partition can have in actual implementation Division mode, such as multiple units or components can be combined or can be integrated into another system or some features can be with Ignore, or does not execute.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be logical Some interfaces are crossed, the indirect coupling or communication connection of device or unit can be electrical property, mechanical or other forms.

It is also known in the art that other than realizing controller in a manner of pure computer readable program code, it is complete Entirely can by by method and step carry out programming in logic come so that controller with logic gate, switch, specific integrated circuit, programmable Logic controller realizes identical function with the form for being embedded in microcontroller etc..Therefore this controller is considered one kind Hardware component, and the structure that the device for realizing various functions that its inside includes can also be considered as in hardware component.Or Person even, can will be considered as realizing the device of various functions either the software module of implementation method can be hardware again Structure in component.

The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions can also be loaded into computer or other programmable data processing devices, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net Network interface and memory.

It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap Include the other elements being not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want There is also other identical elements in the process, method or equipment of element.

It will be understood by those skilled in the art that this specification one or more embodiment can provide as method, system or calculating Machine program product.Therefore, this specification one or more embodiment can be used complete hardware embodiment, complete software embodiment or The form of embodiment combining software and hardware aspects.Moreover, this specification one or more embodiment can be used at one or It is multiple wherein include computer usable program code computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) on the form of computer program product implemented.

This specification one or more embodiment can computer executable instructions it is general on It hereinafter describes, such as program module.Generally, program module includes executing particular task or realization particular abstract data type Routine, programs, objects, component, data structure etc..This this specification one can also be practiced in a distributed computing environment Or multiple embodiments, in these distributed computing environments, by being held by the connected remote processing devices of communication network Row task.In a distributed computing environment, program module can be located at the local and remote computer including storage equipment In storage medium.

All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment Dividing may refer to each other, and the highlights of each of the examples are differences from other embodiments.Especially for system reality For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method Part explanation.In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", The description of " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, structure, material Or feature is contained at least one embodiment or example of this specification.In the present specification, to the signal of above-mentioned term Property statement must not necessarily be directed to identical embodiment or example.Moreover, specific features, structure, material or the spy of description Point may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, Those skilled in the art can be by different embodiments or examples described in this specification and different embodiments or examples Feature is combined.

The foregoing is merely the embodiments of this specification, are not limited to this specification.For art technology For personnel, this specification can have various modifications and variations.It is all made any within the spirit and principle of this specification Modification, equivalent replacement, improvement etc., should be included within the scope of the claims of this specification.

Claims

1. a kind of Fractured pore type tight sandstone reservoir feature determines method characterized by comprising

According to the analysis result of the same rock sample sample to target work area determine the FRACTURE CHARACTERISTICS in target work area, pore character and Pore throat characteristic；

2. Fractured pore type tight sandstone reservoir feature according to claim 1 determines method, which is characterized in that described Determine FRACTURE CHARACTERISTICS, pore character and the pore throat characteristic in target work area, comprising:

Choose full diameter sample；

Level-one plunger sample is drilled through in the predetermined patterns of the full diameter sample, cuts second level plunger from the level-one plunger sample Sample, and chip sample production ordinary sheet and casting body flake are cut from the level-one plunger sample；

Micro- brill sample is drilled through from the second level plunger sample；

Determine the analysis to multistage, the multiple dimensioned rock sample sample as a result, determining target work area according to the analysis result FRACTURE CHARACTERISTICS, pore character and pore throat characteristic.

3. Fractured pore type tight sandstone reservoir feature according to claim 2 determines method, which is characterized in that described Determine the analysis result to multistage, the multiple dimensioned rock sample sample, comprising:

FRACTURE CHARACTERISTICS analysis is carried out to multistage, the multiple dimensioned rock sample sample according to following experimental procedures, obtains analysis result:

Compare number using rock core crack CT scan acquisition crack system, open degree, filling operation, connection based on the full diameter sample Accordingly and slot apertures spatial structure characteristic；

Crack open degree, charges type, filling operation data are obtained using microscopic analysis containing the big thin slice in crack based on described.

4. Fractured pore type tight sandstone reservoir feature according to claim 2 determines method, which is characterized in that described Determine the analysis result to multistage, the multiple dimensioned rock sample sample, comprising:

Pore character analysis is carried out to multistage, the multiple dimensioned rock sample sample according to following experimental procedures, obtains analysis result:

The matrix pores radius frequency that radius is greater than 8 μm is obtained using 8 μm of matrix pores CT scan based on the second level plunger sample Distribution, connectivity data and spatial distribution characteristic；

Based on micro- matrix pores radius frequency for boring sample using 0.9 μm of matrix pores CT scan acquisition radius greater than 0.9 μm Rate distribution, connectivity data and spatial distribution characteristic；

Chink content, chink type are obtained based on the ordinary sheet；

Matrix pores radius, Filling Characteristics and connectivity data are obtained using scanning electron microscope scanning based on the irregular sample.

5. Fractured pore type tight sandstone reservoir feature according to claim 2 determines method, which is characterized in that described Determine the analysis result to multistage, the multiple dimensioned rock sample sample, comprising:

Pore throat characteristic analysis is carried out to multistage, the multiple dimensioned rock sample sample according to following experimental procedures, obtains analysis result:

Average throat radius, throat radius frequency distribution data are obtained using constant speed pressure mercury based on the second level plunger sample；It is based on The second level plunger sample obtains replacement pressure and pore throat radius frequency distribution data using high-pressure mercury test；

Micropore radius, throat radius and connectivity data are obtained using field emission scanning electron microscope based on the ordinary sheet；

6. Fractured pore type tight sandstone reservoir feature according to claim 1 determines method, which is characterized in that described Method further include:

According to Comprehensive Evaluation of Reservoir standard determine target work area evaluating reservoir as a result, the Comprehensive Evaluation of Reservoir standard according to institute Reservoir characteristic is stated to determine, comprising:

According to lithology, matrix porosity, matrix permeability, fracture permeabgility, fracture aperture, Areal porosity, matrix pores radius, row It drives pressure, average pore throat radius, chink content, microstructure characteristic, assessment parameter and establishes Comprehensive Evaluation of Reservoir standard.

7. a kind of Fractured pore type tight sandstone reservoir feature determining device, which is characterized in that described device includes:

Parameter attribute determining module, for determining target work area according to the analysis result of the same rock sample sample to target work area FRACTURE CHARACTERISTICS, pore character and pore throat characteristic；

Reservoir characteristic determining module, for determining the target work according to the FRACTURE CHARACTERISTICS, pore character and pore throat characteristic The reservoir characteristic in area.

8. Fractured pore type tight sandstone reservoir feature determining device according to claim 7, which is characterized in that described Device further include:

Evaluation result determining module, for being determined the evaluating reservoir in target work area as a result, described according to Comprehensive Evaluation of Reservoir standard Comprehensive Evaluation of Reservoir standard is determined according to the reservoir characteristic, comprising:

9. a kind of Fractured pore type tight sandstone reservoir feature determines equipment, which is characterized in that including processor and for depositing Store up processor-executable instruction memory, when described instruction is executed by the processor realization the following steps are included:

10. a kind of reservoir characteristic based on any one of claim 2-5 the method determines system, which is characterized in that the system System includes that FRACTURE CHARACTERISTICS determines that subsystem, pore character determine that subsystem, pore throat characteristic determine subsystem and central processing unit；

The pore character determine subsystem include the second CT scanner, the second hole seep tester, the first constant speed Mercury-injection test instrument, Second petrographic microscope, first laser confocal scanning microscope, the first scanning electron microscope, the first field emission scanning electron microscope；

The pore throat characteristic determines that subsystem includes high-pressure mercury tester, nuclear magnetic resonance tester, the second constant speed Mercury-injection test Instrument, the second scanning electron microscope, the second field emission scanning electron microscope, second laser confocal scanning microscope；

The central processing unit is for handling the FRACTURE CHARACTERISTICS data, pore character data, pore throat characteristic data, really The reservoir characteristic in the fixed target work area.

11. system according to claim 10, which is characterized in that first CT scanner and first hole are seeped and surveyed Examination instrument is for testing the full diameter sample；

Tester, nuclear magnetic resonance tester, high-pressure mercury tester, the first constant speed pressure are seeped in second CT scanner, the second hole Mercury tester and the second constant speed Mercury-injection test instrument are for surveying the second level plunger sample made based on the level-one plunger sample Examination；

Second petrographic microscope, first laser confocal scanning microscope and second laser confocal scanning microscope are used It is tested in the casting body flake made based on the second level plunger sample；

Second petrographic microscope, first field emission scanning electron microscope and the second field emission scanning electron microscope are used for being based on The ordinary sheet of the second level plunger sample production is tested；

First scanning electron microscope, the second scanning electron microscope are used to carry out the irregular sample based on the full diameter sample production Test；

12. system according to claim 11, which is characterized in that the scanning accuracy of first CT scanner is set as 20 μm, for being scanned to the full diameter sample；

The measuring accuracy that tester is seeped in first hole is set as 0.01 × 10^-3μm², for being surveyed to the full diameter sample Examination；

It is 20 μm that the fracture aperture of first petrographic microscope, which obtains precision setting, for carrying out to the big thin slice containing crack Identification.

13. system according to claim 11, which is characterized in that the scanning accuracy of second CT scanner is set as 8 μ M or 0.9 μm, for scanning the second level plunger sample based on 8 μm of scanning accuracy and being swept based on 0.9 μm of scanning accuracy Retouch micro- brill sample；

The porosity measuring accuracy that tester is seeped in second hole be set as 0.01%, permeability measuring accuracy be set as 0.01 × 10^-3μm², for testing the second level plunger sample；

The matrix pores radius measuring accuracy of the first constant speed Mercury-injection test instrument is set as 10 μm, matrix pores radius distribution frequency Rate measuring accuracy is set as 0.01%, for testing the second level plunger sample；

The matrix pores radius measuring accuracy of the first laser confocal scanning microscope is set as 2 μm, for the casting Body thin slice is identified；

The matrix pores radius measuring accuracy of first scanning electron microscope is set as 5 μm, for carrying out to the irregular sample Scanning；

The matrix micropores gap radius measuring accuracy of first field emission scanning electron microscope is set as 0.01 μm, for described common Thin slice is scanned.

14. system according to claim 11, which is characterized in that the average pore throat radius of the nuclear magnetic resonance tester is surveyed Trying precision setting is 0.01 μm, for testing the second level plunger sample；

The average pore throat radius measuring accuracy of the high-pressure mercury tester is set as 0.001 μm, replacement pressure measuring accuracy sets It is set to 0.001MPa, for testing the second level plunger sample；

The matrix throat radius measuring accuracy of the second constant speed Mercury-injection test instrument is set as 0.1 μm, the distribution of matrix throat radius Set of frequency is 0.01%, for testing the second level plunger sample；

The matrix pores radius measuring accuracy of second scanning electron microscope is set as 5 μm, for carrying out to the irregular sample Scanning；

The matrix throat radius measuring accuracy of second field emission scanning electron microscope is set as 0.001 μm, for described common Thin slice is scanned；

The matrix throat radius measuring accuracy of the second laser confocal scanning microscope is set as 0.1 μm, for described Casting body flake is scanned.