Sensitivity Analysis Of Amplitude Variation With Offset (Avo) In Fractured Media
The variation in seismic P to P reflection amplitude with offset (AVO) caused by a system of fractures embedded in an isotropic background is investigated. Additionally. a sensitivity analysis of AVO parameters with respect to the fracture system parameters is made. The fracture system is assumed...
| Main Authors: | , , |
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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/1721.1/75377 |
| _version_ | 1826193053424025600 |
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| author | Krasovec, Mary L. Rodi, William L. Toksoz, M. Nafi |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Krasovec, Mary L. Rodi, William L. Toksoz, M. Nafi |
| author_sort | Krasovec, Mary L. |
| collection | MIT |
| description | The variation in seismic P to P reflection amplitude with offset (AVO) caused by a
system of fractures embedded in an isotropic background is investigated. Additionally.
a sensitivity analysis of AVO parameters with respect to the fracture system parameters
is made. The fracture system is assumed to be aligned vertically or horizontally and
can be gas filled or fluid filled. Elastic constants are calculated by using formulations of Schoenberg (1988). From the elastic constants, the reflection amplitude as a function of angle is calculated using equations from Ruger (1997). Theoretical results for a single interface between fractured and unfractured media, both with and without lithology change, show opportunities for extraction of crack density information from seismic P-wave data collected in fractured geothermal or hydrocarbon reservoirs. For vertically oriented fractures, wide angle data (> 30°) is crucial for the estimation of fracture parameters. |
| first_indexed | 2024-09-23T09:33:20Z |
| format | Technical Report |
| id | mit-1721.1/75377 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:33:20Z |
| publishDate | 2012 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/753772019-04-12T20:32:20Z Sensitivity Analysis Of Amplitude Variation With Offset (Avo) In Fractured Media Krasovec, Mary L. Rodi, William L. Toksoz, M. Nafi Massachusetts Institute of Technology. Earth Resources Laboratory Krasovec, Mary L. Rodi, William L. Toksoz, M. Nafi AVO Fractures Modeling The variation in seismic P to P reflection amplitude with offset (AVO) caused by a system of fractures embedded in an isotropic background is investigated. Additionally. a sensitivity analysis of AVO parameters with respect to the fracture system parameters is made. The fracture system is assumed to be aligned vertically or horizontally and can be gas filled or fluid filled. Elastic constants are calculated by using formulations of Schoenberg (1988). From the elastic constants, the reflection amplitude as a function of angle is calculated using equations from Ruger (1997). Theoretical results for a single interface between fractured and unfractured media, both with and without lithology change, show opportunities for extraction of crack density information from seismic P-wave data collected in fractured geothermal or hydrocarbon reservoirs. For vertically oriented fractures, wide angle data (> 30°) is crucial for the estimation of fracture parameters. Massachusetts Institute of Technology. Borehole Acoustics and Logging Consortium Massachusetts Institute of Technology. Earth Resources Laboratory. Reservoir Delineation Consortium 2012-12-11T16:14:07Z 2012-12-11T16:14:07Z 1998 Technical Report http://hdl.handle.net/1721.1/75377 Earth Resources Laboratory Industry Consortia Annual Report;1998-04 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | AVO Fractures Modeling Krasovec, Mary L. Rodi, William L. Toksoz, M. Nafi Sensitivity Analysis Of Amplitude Variation With Offset (Avo) In Fractured Media |
| title | Sensitivity Analysis Of Amplitude Variation With Offset (Avo) In Fractured Media |
| title_full | Sensitivity Analysis Of Amplitude Variation With Offset (Avo) In Fractured Media |
| title_fullStr | Sensitivity Analysis Of Amplitude Variation With Offset (Avo) In Fractured Media |
| title_full_unstemmed | Sensitivity Analysis Of Amplitude Variation With Offset (Avo) In Fractured Media |
| title_short | Sensitivity Analysis Of Amplitude Variation With Offset (Avo) In Fractured Media |
| title_sort | sensitivity analysis of amplitude variation with offset avo in fractured media |
| topic | AVO Fractures Modeling |
| url | http://hdl.handle.net/1721.1/75377 |
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