Analysis of Full Waveform Acoustic Logging Data in "Soft" Formations
Direct recording of formation shear wave travel time is not possible in "soft" formations where the shear velocity is lower than the borehole fluid velocity. The borehole Stoneley wave is quite sensitive to changes in formation shear wave properties and may be used to indirectly determine...
| Main Authors: | , , |
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| Other Authors: | |
| 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/1721.1/75057 |
| _version_ | 1826202078856347648 |
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| author | Barton, C. Cheng, C. R. Toksoz, M. N. |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Barton, C. Cheng, C. R. Toksoz, M. N. |
| author_sort | Barton, C. |
| collection | MIT |
| description | Direct recording of formation shear wave travel time is not possible in "soft" formations where the shear velocity is lower than the borehole fluid velocity. The borehole Stoneley wave is quite sensitive to changes in formation shear wave properties and may be used to indirectly determine shear velocity. This paper presents a method to calculate formation shear velocity through inversion of the dispersion equation for the propagation of borehole Stoneley waves. The Stoneley wave group velocity and effective attenuation are also computed in this data analysis. |
| first_indexed | 2024-09-23T12:01:53Z |
| format | Technical Report |
| id | mit-1721.1/75057 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T12:01:53Z |
| publishDate | 2012 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/750572019-04-11T02:51:17Z Analysis of Full Waveform Acoustic Logging Data in "Soft" Formations Barton, C. Cheng, C. R. Toksoz, M. N. Massachusetts Institute of Technology. Earth Resources Laboratory Barton, C. Cheng, C. R. Toksoz, M. N. Direct recording of formation shear wave travel time is not possible in "soft" formations where the shear velocity is lower than the borehole fluid velocity. The borehole Stoneley wave is quite sensitive to changes in formation shear wave properties and may be used to indirectly determine shear velocity. This paper presents a method to calculate formation shear velocity through inversion of the dispersion equation for the propagation of borehole Stoneley waves. The Stoneley wave group velocity and effective attenuation are also computed in this data analysis. Massachusetts Institute of Technology. Full Waveform Acoustic Logging Consortium ChevronTexaco (Firm)(Fellowship) 2012-11-27T20:30:44Z 2012-11-27T20:30:44Z 1984 Technical Report http://hdl.handle.net/1721.1/75057 Earth Resources Laboratory Industry Consortia Annual Report;1984-07 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | Barton, C. Cheng, C. R. Toksoz, M. N. Analysis of Full Waveform Acoustic Logging Data in "Soft" Formations |
| title | Analysis of Full Waveform Acoustic Logging Data in "Soft" Formations |
| title_full | Analysis of Full Waveform Acoustic Logging Data in "Soft" Formations |
| title_fullStr | Analysis of Full Waveform Acoustic Logging Data in "Soft" Formations |
| title_full_unstemmed | Analysis of Full Waveform Acoustic Logging Data in "Soft" Formations |
| title_short | Analysis of Full Waveform Acoustic Logging Data in "Soft" Formations |
| title_sort | analysis of full waveform acoustic logging data in soft formations |
| url | http://hdl.handle.net/1721.1/75057 |
| work_keys_str_mv | AT bartonc analysisoffullwaveformacousticloggingdatainsoftformations AT chengcr analysisoffullwaveformacousticloggingdatainsoftformations AT toksozmn analysisoffullwaveformacousticloggingdatainsoftformations |