Estimate the Effective Elastic Properties of Digitized Porous Rocks by Inverting the Cracks Unresolved
Current imaging technique such as micro X-ray CT can provide us detailed 3D micro-structures of porous rocks that can be used in numerical simulation so as to predict elastic properties of rocks saturated with different fluids. However, limited by the resolution the imaging process can provide, we...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Technical Report |
| Published: |
Massachusetts Institute of Technology. Earth Resources Laboratory
2012
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| Online Access: | http://hdl.handle.net/1721.1/68578 |
| _version_ | 1826207757162774528 |
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| author | Zhang, Yang Toksoz, M. Nafi |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Zhang, Yang Toksoz, M. Nafi |
| author_sort | Zhang, Yang |
| collection | MIT |
| description | Current imaging technique such as micro X-ray CT can provide us detailed 3D micro-structures of porous
rocks that can be used in numerical simulation so as to predict elastic properties of rocks saturated with
different fluids. However, limited by the resolution the imaging process can provide, we usually lose the
small features of rocks such as cracks and micro-pores, consequences of which can cause over-predicted
effective elastic properties of porous rocks. In this paper, we present an inversion scheme to estimate the
lost cracks during imaging process with Monte-Carlo algorithm. This method combines numerical
simulation with theoretical models – the differential effective media model and Kuster-Toksöz model.
Compared to the traditional inversion algorithms solely based on theoretical models, the algorithm
presented in this paper utilizes the micro-structures of porous rocks resolved and takes the advantages of
computational results from the digitized rocks, which in fact provides us much information of rocks and
limits our inversion space for cracks. At end, we demonstrate the capability of this method on predicting
the elastic properties of Berea sandstones measured in laboratory. |
| first_indexed | 2024-09-23T13:54:28Z |
| format | Technical Report |
| id | mit-1721.1/68578 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T13:54:28Z |
| publishDate | 2012 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/685782019-04-11T06:24:26Z Estimate the Effective Elastic Properties of Digitized Porous Rocks by Inverting the Cracks Unresolved Zhang, Yang Toksoz, M. Nafi Massachusetts Institute of Technology. Earth Resources Laboratory Zhang, Yang Toksoz, M. Nafi Current imaging technique such as micro X-ray CT can provide us detailed 3D micro-structures of porous rocks that can be used in numerical simulation so as to predict elastic properties of rocks saturated with different fluids. However, limited by the resolution the imaging process can provide, we usually lose the small features of rocks such as cracks and micro-pores, consequences of which can cause over-predicted effective elastic properties of porous rocks. In this paper, we present an inversion scheme to estimate the lost cracks during imaging process with Monte-Carlo algorithm. This method combines numerical simulation with theoretical models – the differential effective media model and Kuster-Toksöz model. Compared to the traditional inversion algorithms solely based on theoretical models, the algorithm presented in this paper utilizes the micro-structures of porous rocks resolved and takes the advantages of computational results from the digitized rocks, which in fact provides us much information of rocks and limits our inversion space for cracks. At end, we demonstrate the capability of this method on predicting the elastic properties of Berea sandstones measured in laboratory. Schlumberger Doll Research Massachusetts Institute of Technology. Earth Resources Laboratory 2012-01-13T19:08:56Z 2012-01-13T19:08:56Z 2010 Technical Report http://hdl.handle.net/1721.1/68578 Earth Resources Laboratory Industry Consortia Annual Report;2010-03 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | Zhang, Yang Toksoz, M. Nafi Estimate the Effective Elastic Properties of Digitized Porous Rocks by Inverting the Cracks Unresolved |
| title | Estimate the Effective Elastic Properties of Digitized Porous Rocks by Inverting the Cracks Unresolved |
| title_full | Estimate the Effective Elastic Properties of Digitized Porous Rocks by Inverting the Cracks Unresolved |
| title_fullStr | Estimate the Effective Elastic Properties of Digitized Porous Rocks by Inverting the Cracks Unresolved |
| title_full_unstemmed | Estimate the Effective Elastic Properties of Digitized Porous Rocks by Inverting the Cracks Unresolved |
| title_short | Estimate the Effective Elastic Properties of Digitized Porous Rocks by Inverting the Cracks Unresolved |
| title_sort | estimate the effective elastic properties of digitized porous rocks by inverting the cracks unresolved |
| url | http://hdl.handle.net/1721.1/68578 |
| work_keys_str_mv | AT zhangyang estimatetheeffectiveelasticpropertiesofdigitizedporousrocksbyinvertingthecracksunresolved AT toksozmnafi estimatetheeffectiveelasticpropertiesofdigitizedporousrocksbyinvertingthecracksunresolved |