Method and system of showing heterogeneity of a porous sample

Patent metadata

Field	Value
Publication number	US-2016305237-A1
Application number	US-201415102233-A
Country	US
Kind code	A1
Filing date	Sep 5, 2014
Priority date	Dec 5, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

A system and method for showing heterogeneity of a porous sample by evaluating the porous sample to generate a digital core image, performing segmentations on the digital core image using multiple approaches to obtain a segmented volume, dividing the segmented volume into one or more sub-volumes of differing size, calculating one or more petrophysical or fluid flow parameters or porosity from the one or more sub-volumes, and presenting data as a structure composed of grid blocks representing an exact representation of the one or more sub-volumes positioned according to a spatial location of the one or more sub-volumes based on selected parameters or values from the one or more petrophysical or fluid flow parameters or porosity.

First claim

What is claimed is:

1 . A method for showing heterogeneity of a porous sample comprising:
evaluating the porous sample to generate a digital core image; performing a plurality of segmentations on the digital core image using a plurality of approaches to obtain a segmented volume; dividing the segmented volume into at least one sub-volume of differing size; calculating at least one petrophysical or fluid flow parameter or porosity from the at least one sub-volume; and presenting data as a structure composed of grid blocks representing an exact representation of the at least one sub-volume positioned according to a spatial location of the at least one sub-volume based on selected parameters or values from the at least one petrophysical or fluid flow parameter or porosity.

2 . The method of claim 1 , wherein the plurality of segmentations comprise binarizations and the segmented volume comprises a binary volume.

3 . The method of claim 1 , further comprising storing data of the structure for presentation in a 2D or 3D format.

4 . The method of claim 1 , wherein evaluating the porous sample is performed using at least one from a group consisting of X-ray scanning, computed tomography scanning, scanning electron microscopy, focused ion beam scanning electron microscopy, and confocal microscopy.

5 . A system for showing heterogeneity of a porous sample comprising:
a plurality of measurement and testing equipment configured to evaluate the porous sample to generate a digital core image; and a computing system comprising:
a data repository configured to store the digital core image,
a digital core modeling tool configured to:
perform a plurality of binarizations or segmentations on the digital core image using a plurality of approaches to obtain a binary or segmented volume;
divide the binary or segmented volume into at least one sub-volume of differing size; and
calculate at least one petrophysical or fluid flow parameter or porosity from the at least one sub-volume, and

a display configured to present data as a structure composed of grid blocks representing an exact representation of the at least one sub-volume positioned according to a spatial location of the at least one sub-volume based on selected parameters or values from the at least one petrophysical or fluid flow parameter or porosity.

6 . The system of claim 5 , wherein the data repository is further configured to store data of the structure for presentation in a 2D or 3D format.

7 . The system of claim 5 , wherein the plurality of measurement and testing equipment is further configured to evaluate the porous sample using at least one from a group consisting of X-ray scanning, computed tomography scanning, scanning electron microscopy, focused ion beam scanning electron microscopy, and confocal microscopy.

8 . A non-transitory computer readable medium comprising instructions for showing heterogeneity of a porous sample, the instructions when executed by a computer processor comprising functionality for:
evaluating the porous sample to generate a digital core image; performing a plurality of binarizations or segmentations on the digital core image using a plurality of approaches to obtain a binary or segmented volume; dividing the binary or segmented volume into at least one sub-volume of differing size; calculating at least one petrophysical or fluid flow parameter or porosity from the at least one sub-volume; and presenting data as a structure composed of grid blocks representing an exact representation of the at least one sub-volume positioned according to a spatial location of the at least one sub-volume based on selected parameters or values from the at least one petrophysical or fluid flow parameter or porosity.

Assignees

• Schlumberger Technology Corp

Inventors

• Klemin Denis Vladimirovich
• Andersen Mark
• Nadeev Alexander Nikolaevich

Classifications

• E21B49/02

  by mechanically taking samples of the soil · CPC title

• E21B43/20

  Displacing by water · CPC title

• E21B49/00 Primary

  Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells · CPC title

• E21B25/00

  Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors (core bits E21B10/02) · CPC title

• E21B43/00

  Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (applicable only to water E03B) · CPC title