Influence of micro-computed tomography image resolution on the predictions of petrophysical properties

Nayef Al Yafei, Oussama Gharbi, Ali Qaseminejad Raeini, Jianhui Yang, Stefan Iglauer, Martin J. Blunt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

Micro-CT scanning is a non-destructive technique that can provide three-dimensional images of rock pore space at a resolution of a few microns. . However, these greyscale images cannot be directly input into simulators to predict flow properties; they require image processing to segment the solid and void space in the rock. Dynamic and static single phase properties can then be computed using the images directly or on extracted equivalent network models. In this paper, we study the effect of imaging resolution (five different voxel sizes ranging from 6-20 μm) of Clashach and Doddington sandstone on predicted single phase properties (porosity and absolute permeability) and network properties. Experimental data is used to validate the predictions. The results suggest that the computed porosity was largely independent of resolution and in good agreement with the measured value, while image resolutions of a few microns are sufficient to determine the permeability of a high-permeability rock such as Doddington but may not be sufficient for lower permeability samples. The topologically representative networks are sensitive to resolution, adding additional smaller pores and throats as the resolution is increased. This latter reason was confirmed by a network extraction analysis that indicated the average throat radius was 6 nm, similar to the highest resolution used and insufficient to image all important features of the pore space properly.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - International Petroleum Technology Conference 2013, IPTC 2013: Challenging Technology and Economic Limits to Meet the Global Energy Demand
Pages1291-1298
Number of pages8
Volume2
Publication statusPublished - 2013
Externally publishedYes
EventInternational Petroleum Technology Conference 2013: Challenging Technology and Economic Limits to Meet the Global Energy Demand, IPTC 2013 - Beijing, China
Duration: 26 Mar 201328 Mar 2013

Other

OtherInternational Petroleum Technology Conference 2013: Challenging Technology and Economic Limits to Meet the Global Energy Demand, IPTC 2013
CountryChina
CityBeijing
Period26/3/1328/3/13

Fingerprint

image resolution
Image resolution
tomography
Tomography
Rocks
prediction
Porosity
permeability
pore space
Sandstone
Image processing
Simulators
porosity
rock
Scanning
Imaging techniques
image processing
void
simulator
sandstone

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Energy Engineering and Power Technology

Cite this

Al Yafei, N., Gharbi, O., Raeini, A. Q., Yang, J., Iglauer, S., & Blunt, M. J. (2013). Influence of micro-computed tomography image resolution on the predictions of petrophysical properties. In Society of Petroleum Engineers - International Petroleum Technology Conference 2013, IPTC 2013: Challenging Technology and Economic Limits to Meet the Global Energy Demand (Vol. 2, pp. 1291-1298)

Influence of micro-computed tomography image resolution on the predictions of petrophysical properties. / Al Yafei, Nayef; Gharbi, Oussama; Raeini, Ali Qaseminejad; Yang, Jianhui; Iglauer, Stefan; Blunt, Martin J.

Society of Petroleum Engineers - International Petroleum Technology Conference 2013, IPTC 2013: Challenging Technology and Economic Limits to Meet the Global Energy Demand. Vol. 2 2013. p. 1291-1298.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Al Yafei, N, Gharbi, O, Raeini, AQ, Yang, J, Iglauer, S & Blunt, MJ 2013, Influence of micro-computed tomography image resolution on the predictions of petrophysical properties. in Society of Petroleum Engineers - International Petroleum Technology Conference 2013, IPTC 2013: Challenging Technology and Economic Limits to Meet the Global Energy Demand. vol. 2, pp. 1291-1298, International Petroleum Technology Conference 2013: Challenging Technology and Economic Limits to Meet the Global Energy Demand, IPTC 2013, Beijing, China, 26/3/13.
Al Yafei N, Gharbi O, Raeini AQ, Yang J, Iglauer S, Blunt MJ. Influence of micro-computed tomography image resolution on the predictions of petrophysical properties. In Society of Petroleum Engineers - International Petroleum Technology Conference 2013, IPTC 2013: Challenging Technology and Economic Limits to Meet the Global Energy Demand. Vol. 2. 2013. p. 1291-1298
Al Yafei, Nayef ; Gharbi, Oussama ; Raeini, Ali Qaseminejad ; Yang, Jianhui ; Iglauer, Stefan ; Blunt, Martin J. / Influence of micro-computed tomography image resolution on the predictions of petrophysical properties. Society of Petroleum Engineers - International Petroleum Technology Conference 2013, IPTC 2013: Challenging Technology and Economic Limits to Meet the Global Energy Demand. Vol. 2 2013. pp. 1291-1298
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