Two-dimensional image and multi-point statistics-based digital core reconstructing method

A two-dimensional image and digital core technology, applied in the field of digital core reconstruction, can solve the problems of long modeling time, difficulty in differentiation, and inability to reflect the characteristics of pore space structure

Pending Publication Date: 2018-11-23
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Gaussian simulation method only has porosity and two-point correlation function as constraints in the reconstruction, which may not reflect the structural characteristics of the pore space; the simulated annealing method is based on the two-point function during reconstruction, resulting in poor pore connectivity, abnormal po

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-dimensional image and multi-point statistics-based digital core reconstructing method
  • Two-dimensional image and multi-point statistics-based digital core reconstructing method
  • Two-dimensional image and multi-point statistics-based digital core reconstructing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0068] A digital core reconstruction method based on two-dimensional images and multipoint statistics. This embodiment is the Berea sandstone obtained by X-ray CT, including:

[0069] (1) To process the Berea rock sample, in order to ensure that the core CT image can clearly reflect the internal microstructure characteristics of the rock sample, the Berea core is drilled into a core cylinder with a maximum diameter of cm, and then the core cylinder is polished and polished to reduce The surface roughness of the sample improves the imaging quality;

[0070] (2) Carry out X-ray CT scanning of Berea sandstone samples. The equipment for carrying out the scanning experiment is the MicroXCT-400 CT machine produced by Zeiss Company. Its highest resolution is 0.75 microns and the field of view pixels is 2048. 2 .

[0071] The working process of CT scanning is as follows: Fix the sample, turn on the X-ray source, and the radiation emitted by the radiation source passes through the sample. Dur...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a two-dimensional image and multi-point statistics-based digital core reconstructing method. The method disclosed by the invention comprises the steps of obtaining a two-dimensional training image of a rock sample by using a physical experiment method; and by combining with a multi-point statistical method, obtaining high-order statistical information on the two-dimensional core image on the basis of the obtained two-dimensional core image, thereby constructing a three-dimensional digital core which can reflect true inner-pore structural features of the core. By meansof the method, the shortcomings caused by only applying a two-point statistical function in a traditional numerical reconstruction algorithm are overcome.

Description

Technical field [0001] The invention relates to a digital core reconstruction method based on two-dimensional images and multi-point statistics, and belongs to the field of numerical simulation technology and digital core in oil and gas field development engineering. Background technique [0002] Porous media widely exist in many fields of nature and human experimental activities. The reservoir in oil and gas field development belongs to a typical porous medium. Rock porous media is the basic medium for fluid storage and flow. Its flow mechanism and transport properties are derived from its internal microscopic pore structure, such as pore throat size, shape, internal roughness, interconnection, pore throat characteristics and their composition Way etc. Accurate and quantitative characterization of the microscopic pore structure of rock porous media has important theoretical significance for studying the micro- and meso seepage mechanism and transport properties in rock porous ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06T17/00
CPCG06T17/00G06T2200/08
Inventor 刘磊姚军孙海张磊杨永飞朱星宇
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap