Permeability Estimation From Velocity Anisotropy In Fractured Rock
Cracks in a rock mass subjected to a uniaxial stress will be preferentially closed depending on the angle between the fracture normal and the direction of the applied stress. If the prestress fracture distribution is isotropic, the effective elastic properties of such a material are then transverse...
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| Format: | Technical Report |
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Massachusetts Institute of Technology. Earth Resources Laboratory
2012
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| Online Access: | http://hdl.handle.net/1721.1/75141 |
| _version_ | 1811096207163916288 |
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| author | Gibson, Richard L., Jr. Toksoz, M. Nafi |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Gibson, Richard L., Jr. Toksoz, M. Nafi |
| author_sort | Gibson, Richard L., Jr. |
| collection | MIT |
| description | Cracks in a rock mass subjected to a uniaxial stress will be preferentially closed depending on the angle between the fracture normal and the direction of the applied
stress. If the prestress fracture distribution is isotropic, the effective elastic properties of such a material are then transversely isotropic due to the preferred alignment of the cracks. Velocity measurements in multiple directions are used to invert for the probability density function describing orientations of crack normals in such a rock. We suggest a means of using the results on fracture distribution from the velocity inversion to estimate the anisotropic permeability of the fracture system. This approach yields a prediction of permeability as a function of the angle from the uniaxial stress direction. |
| first_indexed | 2024-09-23T16:40:17Z |
| format | Technical Report |
| id | mit-1721.1/75141 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T16:40:17Z |
| publishDate | 2012 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/751412019-04-11T03:23:08Z Permeability Estimation From Velocity Anisotropy In Fractured Rock Gibson, Richard L., Jr. Toksoz, M. Nafi Massachusetts Institute of Technology. Earth Resources Laboratory Gibson, Richard L., Jr. Toksoz, M. Nafi Cracks in a rock mass subjected to a uniaxial stress will be preferentially closed depending on the angle between the fracture normal and the direction of the applied stress. If the prestress fracture distribution is isotropic, the effective elastic properties of such a material are then transversely isotropic due to the preferred alignment of the cracks. Velocity measurements in multiple directions are used to invert for the probability density function describing orientations of crack normals in such a rock. We suggest a means of using the results on fracture distribution from the velocity inversion to estimate the anisotropic permeability of the fracture system. This approach yields a prediction of permeability as a function of the angle from the uniaxial stress direction. Massachusetts Institute of Technology. Full Waveform Acoustic Logging Consortium United States. Dept. of Energy (Grant DE-FG02-86ERI3636) National Science Foundation (U.S.). Graduate Research Fellowship Program 2012-12-03T17:47:43Z 2012-12-03T17:47:43Z 1989 Technical Report http://hdl.handle.net/1721.1/75141 Earth Resources Laboratory Industry Consortia Annual Report;1989-07 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | Gibson, Richard L., Jr. Toksoz, M. Nafi Permeability Estimation From Velocity Anisotropy In Fractured Rock |
| title | Permeability Estimation From Velocity Anisotropy In Fractured Rock |
| title_full | Permeability Estimation From Velocity Anisotropy In Fractured Rock |
| title_fullStr | Permeability Estimation From Velocity Anisotropy In Fractured Rock |
| title_full_unstemmed | Permeability Estimation From Velocity Anisotropy In Fractured Rock |
| title_short | Permeability Estimation From Velocity Anisotropy In Fractured Rock |
| title_sort | permeability estimation from velocity anisotropy in fractured rock |
| url | http://hdl.handle.net/1721.1/75141 |
| work_keys_str_mv | AT gibsonrichardljr permeabilityestimationfromvelocityanisotropyinfracturedrock AT toksozmnafi permeabilityestimationfromvelocityanisotropyinfracturedrock |