CN106918607A - A kind of pore structure acquisition methods and device - Google Patents
A kind of pore structure acquisition methods and device Download PDFInfo
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- CN106918607A CN106918607A CN201710129770.XA CN201710129770A CN106918607A CN 106918607 A CN106918607 A CN 106918607A CN 201710129770 A CN201710129770 A CN 201710129770A CN 106918607 A CN106918607 A CN 106918607A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
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Abstract
A kind of pore structure acquisition methods provided in an embodiment of the present invention and device, belong to geological prospecting and technical field of physical geography.Methods described includes：Rock sample is standardized.Standardized rock sample is put into carries out X-ray scanning in CT scanner, obtain the first view data.According to described first image data, the target area of described first image data is obtained.According to the target area, target sample is extracted in the standardized rock sample.The target sample is put into carries out image scanning in focused ion beam field emission scanning electron microscope system, obtain the second view data.According to second view data, pore structure is obtained.The method can be to the pore structure of rock sample, and pore structure to designated area or unintelligible region is obtained and characterized.Targetedly systematization is obtained and characterized to realize rock pore structure, reaches the dependence between accurate observation and the pore structure and hole of study of rocks sample interior.
Description
Technical field
The present invention relates to geological prospecting and technical field of physical geography, obtained in particular to a kind of pore structure
Take method and device.
Background technology
Shale gas are a kind of main to adsorb the unconventional petroleum resources being present in free state in shale hole therefore right
The accurate characterization of shale hole plays an important roll for determining the resource potential of shale gas.Though but at present for shale hole
So have a substantial amounts of characterizing method, but its focus primarily upon how the determination to shale gas porosity, and for the inside of shale
Structural development feature does not have the corresponding development characteristics and three-dimensional knot for obtaining or characterizing method, cannot just observing rock interior yet
Structure, it is impossible to there is the pore structure in the systemic degree rock being directed to carry out observational study.This also result in enterprise or research work
Author is to shale gas, or the research of other rock textures is difficult；The pore structure of rock interior cannot be accurately got, with regard to nothing
Method recognizes the dependence between shale gas and blowhole, and limits progress of research.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of pore structure acquisition methods and device, Neng Gouyou
Targetedly obtain the three dimensional pore structures of designated area in rock sample.
What embodiments of the invention were realized in：
A kind of pore structure acquisition methods, including：Rock sample is standardized；Standardized rock sample is put into CT to sweep
Retouch and carry out in instrument X-ray scanning, obtain the first view data；According to described first image data, described first image number is obtained
According to target area；According to the target area, target sample is extracted in the standardized rock sample；By the mesh
Standard specimen product carry out image scanning in being put into focused ion beam-field emission scanning electron microscope system, obtain the second view data；According to institute
The second view data is stated, pore structure is obtained.
Preferably, it is described according to described first image data, the step of obtain the target area of described first image data,
Including：According to described first image data, the first hole data are obtained, and obtain the first hole data correspondence described first image
Target area in data.
Preferably, it is described according to second view data, the step of obtain pore structure, including：To second figure
As data carry out image segmentation, the second hole data are obtained；According to the second hole data, three-dimensional reconstruction is carried out, obtain hole
Gap structure.
Preferably, the step that image segmentation is carried out to second view data, the hole data of target sample are obtained
Suddenly include：According to second view data, gradation data, the gray scale of zonule of the pixel of second view data are obtained
Data and gray variance；The gradation data of pixel, the gradation data of zonule and gray scale side according to second view data
Difference, obtains the hole data of the target sample.
Preferably, the parameter of the hole data includes：Pore appearance, pore size and connectedness.
Preferably, resolution ratio of the resolution ratio of described first image data more than second view data.
A kind of pore structure acquisition device, including：Standardized module, for rock sample to be standardized；First picture number
According to acquisition module, X-ray scanning is carried out in CT scanner for standardized rock sample to be put into, obtain the first picture number
According to；Target area acquisition module, for according to described first image data, obtaining the target area of described first image data；
Target sample acquisition module, for according to the target area, target sample being extracted in the standardized rock sample；
Second image data acquisition module, for the target sample to be put into focused ion beam-field emission scanning electron microscope system
Row image scanning, obtains the second view data；Pore structure acquisition module, for according to second view data, obtaining hole
Gap structure.
Preferably, the target area acquisition module includes：First hole data acquisition submodule, for according to described
One view data, obtains the first hole data, and obtain the target area in the first hole data correspondence described first image data
Domain.
Preferably, pore structure acquisition module includes：Second hole data acquisition submodule, for second image
Data carry out image segmentation, obtain the second hole data；Pore structure acquisition submodule, for according to second number of pores
According to, three-dimensional reconstruction is carried out, obtain pore structure.
Preferably, resolution ratio of the resolution ratio of described first image data more than second view data.
A kind of pore structure acquisition methods and device provided in the embodiment of the present invention, the method is first by rock sample mark
Standardization, is just obtained in that more accurate scanning result after standardization, the rock sample after standardization then is put into CT scanner
In carry out X-ray scanning, obtain the first view data.A target area is chosen in the described first image data for being obtained
Domain, then the target sample in the rock sample according to target area after the standardization corresponding to segmentation portion and target area
Product.The target sample is put into carries out image scanning in focused ion beam-field emission scanning electron microscope system, obtain the second image
Data；Pore structure in target sample is obtained according to the second view data.The method and device can be to the holes in rock sample
Gap structure, and the pore structure of designated area or unintelligible region is obtained and characterized.Realize blowhole knot
The targetedly systematization of structure is obtained and characterized, and the hole of accurately observation and study of rocks sample interior is reached with this
Dependence between structure and hole etc..
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
The block diagram of the pore structure acquisition equipment that Fig. 1 is provided for present pre-ferred embodiments；
The flow chart of the pore structure acquisition methods that Fig. 2 is provided for present pre-ferred embodiments；
The step of pore structure acquisition methods that Fig. 3 is provided for present pre-ferred embodiments S160 flow chart；
Fig. 4 be pore structure acquisition device of the present invention high-level schematic functional block diagram.
Icon：10- pore structures obtain equipment；100- pore structure acquisition device；101- memories；102- storage controls
Device；103- processors；104- Peripheral Interfaces；105- input-output units；106- display units；110- standardized modules；120-
First image data acquisition module；130- target areas acquisition module；140- target sample acquisition modules；The picture numbers of 150- second
According to acquisition module；160- pore structure acquisition modules.
Specific embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Generally exist
The component of the embodiment of the present invention described and illustrated in accompanying drawing can be arranged and designed with a variety of configurations herein.Cause
This, the detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit claimed invention below
Scope, but it is merely representative of selected embodiment of the invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.Meanwhile, of the invention
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relative importance.
As shown in figure 1, being the block diagram that a kind of pore structure obtains equipment 10.The pore structure obtains equipment 10
It is defeated including pore structure acquisition device 100, memory 101, storage control 102, processor 103, Peripheral Interface 104, input
Go out unit 105, display unit 106.
It is the memory 101, storage control 102, processor 103, Peripheral Interface 104, input-output unit 105, aobvious
Show that each element of unit 106 is directly or indirectly electrically connected with each other, to realize the transmission or interaction of data.For example, these
Element can be realized being electrically connected with by one or more communication bus or holding wire each other.The pore structure acquisition device
During 100 can be stored in the memory 101 including at least one in the form of software or firmware (firmware) or it is solidificated in institute
State the software function module during pore structure obtains the operating system (operating system, OS) of equipment 10.The treatment
Device 103 is used to perform the executable module stored in memory 101, such as it is soft that described pore structure acquisition device 100 includes
Part functional module or computer program.
Wherein, memory 101 may be, but not limited to, random access memory (Random Access Memory,
RAM), read-only storage (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only
Memory, PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM),
Electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..
Wherein, memory 101 is used for storage program, and the processor 103 performs described program after execute instruction is received, foregoing
Method performed by the server of the stream process definition that embodiment of the present invention any embodiment is disclosed can apply to processor 103
In, or realized by processor 103.
Processor 103 is probably a kind of IC chip, the disposal ability with signal.Above-mentioned processor 103 can
Being general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit
(Network Processor, abbreviation NP) etc.；Can also be digital signal processor (DSP), application specific integrated circuit (ASIC),
It is ready-made programmable gate array (FPGA) or other PLDs, discrete gate or transistor logic, discrete hard
Part component.Can realize or perform disclosed each method in the embodiment of the present invention, step and logic diagram.General processor
Can be microprocessor or the processor 103 can also be any conventional processor 103 etc..
Various input/output devices are coupled to processor 103 and memory 101 by the Peripheral Interface 104.At some
In embodiment, Peripheral Interface 104, processor 103 and storage control 102 can be realized in one single chip.Other one
In a little examples, they can be realized by independent chip respectively.
Input-output unit 105 is used to be supplied to user input data to realize user with the server (or local terminal)
Interaction.The input-output unit 105 may be, but not limited to, mouse and keyboard etc..
Display unit 106 provides an interactive interface and user between and (for example uses in the server (or local terminal)
Family operation interface) or referred to user for display image data.In the present embodiment, the display unit 106 can be liquid
Crystal display or touch control display.If touch control display, it can be the capacitance touching control for supporting single-point and multi-point touch operation
Screen or resistance type touch control screen etc..Support that single-point and multi-point touch operation refer to that touch control display can be sensed and shown from the touch-control
The touch control operation that one or more positions are produced simultaneously on device, and transfer to processor 103 to enter the touch control operation for sensing
Row is calculated and processed.
Fig. 2 is referred to, is that the pore structure being applied to shown in Fig. 1 that present pre-ferred embodiments are provided obtains equipment 10
The flow chart of pore structure acquisition methods.The idiographic flow shown in Fig. 2 will be described in detail below.
Step S110, rock sample is standardized.
The rock sample is prepared as cylinder.It should be noted that being prepared as cylinder only as a kind of more excellent
The mode of choosing, can also be in addition cube, polygon prism etc..The both sides bottom surface that the rock sample of cylinder will be prepared as is polished flat
It is whole, obtain standardized rock sample.
Mode is preferably carried out as one kind, can be by the shale samples fetched from outcrop profile or rock core in field.Again
The shale samples that will be fetched pass through machine tool for example：Lathe, is prepared into cylinder, a diameter of 2.5cm of the cylinder, length
It is 5cm.Then make its smooth the both sides underrun sanding and polishing of the rock sample of cylinder again, scanning can be beneficial to this
Observation afterwards.Wherein, the both sides bottom surface sanding and polishing of the rock sample of cylinder can be polished by automated mechanical and is set
It is standby to carry out sanding and polishing, also manual polishing polishing can be carried out by milling tools, it is not specifically limited herein.
Step S120, standardized rock sample is put into carries out X-ray scanning in CT scanner, obtain the first picture number
According to.
In step S120, parameter setting should be carried out to CT scanner.Specifically, to ensure that CT scanner has high score
Resolution, CT scanner can be large-scale CT scanner, and its model can be show sword serial (CLOBAL Silver).Additionally, setting
The parameter for putting the resolution ratio of CT scan is 100nm, and the first view data of acquisition is the first picture number of the resolution ratio of 100nm
According to.It should be noted that the CT of 100nm resolution ratio is not specifically limited as just a kind of implementation method, can also adopt in addition
Analysis, such as millimeter rank, micron level etc. are scanned with the CT of other resolution ratio.Standardized rock sample is placed on
The sample position to be detected of CT scanner, is then turned on CT scanner and sets the parameter of CT scanner resolution ratio, therefore can carry out X
Ray scanning, thus after being scanned the standardized rock sample the first view data.
Step S130, according to described first image data, obtains the target area of described first image data.
Specifically, according to described first image data, obtaining the first hole data, and obtain the first hole data correspondence institute
State the target area in the first view data.
After CT scanner obtains the first view data, the first view data for scanning has been divided into multiple cells by CT scanner
Domain, for example：It is divided into 9 regions.Additionally, the default gradation data of CT scanner memory storage, the default gradation data is in one
Between be worth., CT scanner can obtain the gradation data of the pixel of each zonule by scanning.According to the scanning of operating personnel
Setting, CT scanner is obtained in that the gradation data of pixel is more than or less than the zonule gradation data of default gradation data most
A small or maximum gradation data for zonule.Furthermore, CT scanner can also be default by itself according to the gradation data
Calculation procedure and obtain the corresponding gray variance of gradation data.In addition, the gradation data of the zonule and the gray variance are all
The corresponding different types of architectural feature of the rock sample is represented, for example, the main body framework of rock sample, different holes
Degree, the connectedness between different pore appearances, different pore sizes, hole.CT scanner is according to getting the zonule
Gradation data and gray variance, then just can obtain the of the standardized rock sample by the calculating of itself pre-set programs
One hole data.By above-mentioned computing flow, CT scanner is according to the first hole data, and the first view data is divided into
Multiple zonules, CT scanner is just obtained in that zonule corresponding to the first hole data is located at the first view data
Position, the position is target area.
Step S140, according to the target area, target sample is extracted in the standardized rock sample.
Operating personnel, in the position of the first view data, just can correspond to standardized rock sample according in target area
Find to should in the first view data target area physical location.Operating personnel are by operating high-precision plant equipment example
Such as：Lathe, just can be separated to standardized rock sample, so as to extract in standardized rock sample to should
The target sample of target area in one view data.The target sample can be the 2-3 grams of sample of bulk, and certain bulk is only
As a kind of preferably implementation method, other shapes (such as column) are can also be.In the target sample that the embedding treatment is crossed
The embedding medium for being used may be, but not limited to, epoxy resin, polystyrene resin, isobutylene resin and water-soluble resin.It is right
After target sample carries out embedding treatment, embedding medium forms complete covering to the outer surface of target sample, and then can prevent it
Pore structure in damaging target sample in follow-up processing procedure.For example, when the polishing of target sample surface is carried out
Just it is hardly damaged.
Step S150, the target sample is put into be carried out imaging and sweeps in focused ion beam-field emission scanning electron microscope system
Retouch, obtain the second view data.
In the step s 120, the model of focused ion beam-field emission scanning electron microscope system can be LYRA3-XMU/XMH types
Focused ion beam-field emission scanning electron microscope system.Carry out described the target sample that embedding treatment crosses and be put into focused ion beam-field
Before image scanning being carried out in transmitting ESEM system (FIB-SEM), should be by the type focused ion beam-Flied emission scanning electricity
The sample chamber of mirror system is vacuumized, and then according to target sample position in sample chamber is placed on, adjusts the Electronic Speculum of the system to mesh
Standard specimen product are focused.And further according to target sample position in sample chamber is placed on, angle of inclination and the work electricity of Electronic Speculum are set
Pressure, adjusts multiplication factor and focuses, and sets sweep parameter (for example, the resolution ratio of scanning imagery is set to Nano grade, micron order
Other or millimeter rank), then start to carry out target sample image scanning (carrying out section etching to target sample).By poly-
The scanning of pyrophosphate ion beam-field emission scanning electron microscope system, just can obtain the scan image of correspondence target sample, as obtain the
Two view data.
Step S160, according to second view data, obtains pore structure.
As shown in figure 3, step S160 specifically includes following steps：
Step S161, image segmentation is carried out to second view data, obtains the second hole data.
Step S162, according to the second hole data, carries out three-dimensional reconstruction, obtains pore structure.
Specifically, in step S161 and step S162, after focused ion beam-field emission scanning electron microscope system scanning, gathering
Pyrophosphate ion beam-field emission scanning electron microscope system according to the second view data, and can export the picture of the scan image of target sample
The gradation data of element.Additionally, in the gradation data of output, focused ion beam-field emission scanning electron microscope system is also by image point
For multiple zonules, for example：It is divided into 9 regions.Therefore the focused ion beam-field emission scanning electron microscope system can also be exported often
The gradation data of the pixel of individual zonule.Furthermore, focused ion beam-field emission scanning electron microscope system can also be according to gradation data
The corresponding gray variance of gradation data is obtained by itself default calculation procedure, and the gradation data institute of each zonule is right
Answer the gray variance of each zonule.Gradation data, the zonule of the pixel in each scope in view data
Gradation data and the gray variance all represent the corresponding different types of architectural feature of the target sample, for example, target
Connectedness between the main body framework of sample, different porositys, different pore appearances, different pore sizes, hole.It is poly-
Pyrophosphate ion beam-field emission scanning electron microscope system is led to again according to gradation data, the gradation data of zonule and gray variance is got
Crossing the calculating of itself pre-set programs just can obtain the second hole data of the target sample, and the second hole of the target sample
Data include：Pore appearance, pore size and connectedness.
Focused ion beam-field emission scanning electron microscope system obtains the second hole data of the target sample, i.e. focused ion
Beam-field emission scanning electron microscope system obtains the feature of the target sample.CT scanner can enter according to the feature of target sample
Row three-dimensional reconstruction.Wherein, focused ion beam-field emission scanning electron microscope system can be based on unity3D, unreal, cryengine etc.
The 3-dimensional image model of the software engine system constructing target sample.Additionally, researcher is by observing or adjusting focused ion
The 3-dimensional image model that beam-field emission scanning electron microscope system modelling shows, can obtain target sample from 3-dimensional image model
Pore structure.The observation for convenience pore structure, can be by the other structures in 3-dimensional image model (for example, target sample
Skeleton structure) be hidden, then pore structure is shown, it is possible to sight is clearly analyzed to pore structure
Examine, with the information needed for being studied.
It should be noted that be to ensure the final accuracy for obtaining 3-dimensional image model, in above-mentioned flow, the of acquisition
Resolution ratio of the resolution ratio of one view data more than the second view data for obtaining.
Refer to Fig. 4, be present pre-ferred embodiments provide Fig. 1 shown in pore structure acquisition device 100 function
Module diagram.The pore structure acquisition device 100 includes：Standardized module 110, the first image data acquisition module 120,
Target area acquisition module 130, target sample acquisition module 140, the second image data acquisition module 150 and pore structure are obtained
Module 160.
Standardized module 110, for rock sample to be standardized.
First image data acquisition module 120, X-ray is carried out for standardized rock sample to be put into CT scanner
Scanning, obtains the first view data.
Target area acquisition module 130, for according to described first image data, obtaining the mesh of described first image data
Mark region.
Target sample acquisition module 140, for according to the target area, being extracted in the standardized rock sample
Go out target sample.
Second image data acquisition module 150, for the target sample to be put into focused ion beam-Flied emission scanning electricity
Image scanning is carried out in mirror system, the second view data is obtained.
Pore structure acquisition module 160, for according to second view data, obtaining pore structure.
Pore structure acquisition module 160 includes：
Second hole data acquisition submodule, for carrying out image segmentation to second view data, obtains the second hole
Gap data.
Pore structure acquisition submodule, for according to the second hole data, carrying out three-dimensional reconstruction, obtains hole knot
Structure.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the method for foregoing description
Specific work process, may be referred to the corresponding process in aforementioned means, will not be repeated here.
In sum, a kind of pore structure acquisition methods and device for being provided in the embodiment of the present invention, the method first will
Rock sample is standardized, and more accurate scanning result is just obtained in that after standardization, then puts the rock sample after standardization
Enter and carry out X-ray scanning in CT scanner, obtain the first view data.One is chosen in the described first image data for being obtained
Individual target area, then in the rock sample according to target area after the standardization corresponding to segmentation portion and target area
Target sample.The target sample is put into carries out image scanning in focused ion beam-field emission scanning electron microscope system, obtain the
Two view data；Pore structure in target sample is obtained according to the second view data.The method and device can be to rock samples
In pore structure, and the pore structure of designated area or unintelligible region is obtained and characterized.Realize rock
The targetedly systematization of pore structure is obtained and characterized, and reaches accurately observation and study of rocks sample interior with this
Pore structure and hole between dependence etc..
In several embodiments provided herein, it should be understood that disclosed apparatus and method, it is also possible to pass through
Other modes are realized.Device embodiment described above is only schematical, for example, flow chart and block diagram in accompanying drawing
Show the device of multiple embodiments of the invention, the architectural framework in the cards of method and computer program product,
Function and operation.At this point, each square frame in flow chart or block diagram can represent one the one of module, program segment or code
Part a, part for the module, program segment or code is used to realize holding for the logic function for specifying comprising one or more
Row instruction.It should also be noted that at some as in the implementation replaced, the function of being marked in square frame can also be being different from
The order marked in accompanying drawing occurs.For example, two continuous square frames can essentially be performed substantially in parallel, they are sometimes
Can perform in the opposite order, this is depending on involved function.It is also noted that every in block diagram and/or flow chart
The combination of the square frame in individual square frame and block diagram and/or flow chart, can use the function or the special base of action for performing regulation
Realized in the system of hardware, or can be realized with the combination of computer instruction with specialized hardware.
In addition, each functional module in each embodiment of the invention can integrate to form an independent portion
Divide, or modules individualism, it is also possible to which two or more modules are integrated to form an independent part.
If the function is to realize in the form of software function module and as independent production marketing or when using, can be with
Storage is in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used to so that a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.Need
Illustrate, herein, such as first and second or the like relational terms be used merely to by an entity or operation with
Another entity or operation make a distinction, and not necessarily require or imply these entities or there is any this reality between operating
The relation or order on border.And, term " including ", "comprising" or its any other variant be intended to the bag of nonexcludability
Contain, so that process, method, article or equipment including a series of key elements are not only including those key elements, but also including
Other key elements being not expressly set out, or it is this process, method, article or the intrinsic key element of equipment also to include.
In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including the key element
Process, method, article or equipment in also there is other identical element.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.It should be noted that：Similar label and letter exists
Similar terms is represented in following accompanying drawing, therefore, once being defined in a certain Xiang Yi accompanying drawing, then it is not required in subsequent accompanying drawing
It is further defined and is explained.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of pore structure acquisition methods, it is characterised in that including：
Rock sample is standardized；
Standardized rock sample is put into carries out X-ray scanning in CT scanner, obtain the first view data；
According to described first image data, the target area of described first image data is obtained；
According to the target area, target sample is extracted in the standardized rock sample；
The target sample is put into carries out image scanning in focused ion beam-field emission scanning electron microscope system, obtain the second figure
As data；
According to second view data, pore structure is obtained.
2. method according to claim 1, it is characterised in that described according to described first image data, obtains described the
The step of target area of one view data, including：
According to described first image data, the first hole data are obtained, and obtain the first hole data correspondence described first image
Target area in data.
3. method according to claim 1, it is characterised in that described according to second view data, obtains hole knot
The step of structure, including：
Image segmentation is carried out to second view data, the second hole data are obtained；
According to the second hole data, three-dimensional reconstruction is carried out, obtain pore structure.
4. method according to claim 3, it is characterised in that described that image segmentation is carried out to second view data,
The step of hole data for obtaining target sample, includes：
According to second view data, gradation data, the grey of zonule of the pixel of second view data are obtained
According to and gray variance；
The gradation data of pixel, the gradation data of zonule and gray variance according to second view data, obtain described
The hole data of target sample.
5. method according to claim 3, it is characterised in that the parameter of the hole data includes：Pore appearance, aperture
Size and connectedness.
6. method according to claim 1, it is characterised in that the resolution ratio of described first image data is more than described second
The resolution ratio of view data.
7. a kind of pore structure acquisition device, it is characterised in that including：
Standardized module, for rock sample to be standardized；
First image data acquisition module, X-ray scanning is carried out for standardized rock sample to be put into CT scanner, is obtained
Obtain the first view data；
Target area acquisition module, for according to described first image data, obtaining the target area of described first image data；
Target sample acquisition module, for according to the target area, target being extracted in the standardized rock sample
Sample；
Second image data acquisition module, for the target sample to be put into focused ion beam-field emission scanning electron microscope system
In carry out image scanning, obtain the second view data；
Pore structure acquisition module, for according to second view data, obtaining pore structure.
8. device according to claim 7, it is characterised in that the target area acquisition module includes：
Target area acquisition submodule, for according to described first image data, obtaining the first hole data, and obtains the first hole
Target area in gap data correspondence described first image data.
9. device according to claim 7, it is characterised in that pore structure acquisition module includes：
Second hole data acquisition submodule, for carrying out image segmentation to second view data, obtains the second number of pores
According to；
Pore structure acquisition submodule, for according to the second hole data, carrying out three-dimensional reconstruction, obtains pore structure.
10. device according to claim 7, it is characterised in that the resolution ratio of described first image data is more than described the
The resolution ratio of two view data.
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