Representative Elementary Volume of Rock Using X-Ray Microcomputed Tomography: A New Statistical Approach
Rock heterogeneity is a key parameter influencing a range of rock properties such as fluid flow and geomechanical characteristics. The previously proposed statistical techniques were able to rank heterogeneity on a qualitative level to different extents; however, they need to select a threshold valu...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/8866486 |
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| _version_ | 1849693611431559168 |
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| author | Taufiq Rahman Hamed Lamei Ramandi Hamid Roshan Stefan Iglauer |
| author_facet | Taufiq Rahman Hamed Lamei Ramandi Hamid Roshan Stefan Iglauer |
| author_sort | Taufiq Rahman |
| collection | DOAJ |
| description | Rock heterogeneity is a key parameter influencing a range of rock properties such as fluid flow and geomechanical characteristics. The previously proposed statistical techniques were able to rank heterogeneity on a qualitative level to different extents; however, they need to select a threshold value for determination of representative elementary volumes (REV), which in turn makes the obtained REV subjective. In this study, an X-ray microcomputed tomography (μCT) technique was used to obtain images from different porous media. A new statistical technique was then used to compute REV, as a measure of heterogeneity, without the necessity of defining a threshold. The performance of the method was compared with other methods. It was shown that the calculated sum of the relative errors of the proposed method was lowest compared to the other statistical techniques for all tested porous media. The proposed method can be applied to different types of rocks for more accurate estimation of a REV. |
| format | Article |
| id | doaj-art-5678cff2a9cd401e966db94265c62876 |
| institution | DOAJ |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-5678cff2a9cd401e966db94265c628762025-08-20T03:20:20ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/88664868866486Representative Elementary Volume of Rock Using X-Ray Microcomputed Tomography: A New Statistical ApproachTaufiq Rahman0Hamed Lamei Ramandi1Hamid Roshan2Stefan Iglauer3Department of Petroleum Engineering, Curtin University, WA 6151, AustraliaSchool of Minerals and Energy Resources Engineering, UNSW Sydney, NSW 2052, AustraliaSchool of Minerals and Energy Resources Engineering, UNSW Sydney, NSW 2052, AustraliaSchool of Engineering, Edith Cowan University, WA 6027, AustraliaRock heterogeneity is a key parameter influencing a range of rock properties such as fluid flow and geomechanical characteristics. The previously proposed statistical techniques were able to rank heterogeneity on a qualitative level to different extents; however, they need to select a threshold value for determination of representative elementary volumes (REV), which in turn makes the obtained REV subjective. In this study, an X-ray microcomputed tomography (μCT) technique was used to obtain images from different porous media. A new statistical technique was then used to compute REV, as a measure of heterogeneity, without the necessity of defining a threshold. The performance of the method was compared with other methods. It was shown that the calculated sum of the relative errors of the proposed method was lowest compared to the other statistical techniques for all tested porous media. The proposed method can be applied to different types of rocks for more accurate estimation of a REV.http://dx.doi.org/10.1155/2020/8866486 |
| spellingShingle | Taufiq Rahman Hamed Lamei Ramandi Hamid Roshan Stefan Iglauer Representative Elementary Volume of Rock Using X-Ray Microcomputed Tomography: A New Statistical Approach Geofluids |
| title | Representative Elementary Volume of Rock Using X-Ray Microcomputed Tomography: A New Statistical Approach |
| title_full | Representative Elementary Volume of Rock Using X-Ray Microcomputed Tomography: A New Statistical Approach |
| title_fullStr | Representative Elementary Volume of Rock Using X-Ray Microcomputed Tomography: A New Statistical Approach |
| title_full_unstemmed | Representative Elementary Volume of Rock Using X-Ray Microcomputed Tomography: A New Statistical Approach |
| title_short | Representative Elementary Volume of Rock Using X-Ray Microcomputed Tomography: A New Statistical Approach |
| title_sort | representative elementary volume of rock using x ray microcomputed tomography a new statistical approach |
| url | http://dx.doi.org/10.1155/2020/8866486 |
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