The Full Waveform Acoustic Log Inversion Problem
This paper presents the full waveform acoustic log inversion problem for a multisource - multireceiver tool logging a cylindrical fluid-filled borehole. The problem is formulated in the frequency-depth domain. A priori knowledge about the source array spectra and the borehole formation parameters...
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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/1721.1/75144 |
| _version_ | 1811091245161775104 |
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| author | Garcia, G. H. Cheng, C. H. |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Garcia, G. H. Cheng, C. H. |
| author_sort | Garcia, G. H. |
| collection | MIT |
| description | This paper presents the full waveform acoustic log inversion problem for a
multisource - multireceiver tool logging a cylindrical fluid-filled borehole. The problem
is formulated in the frequency-depth domain. A priori knowledge about the source
array spectra and the borehole formation parameters (velocity, attenuation, density)
is taken Into account. It is shown that the inversion problem can be formulated as a
Separable Nonlinear Least Squares (SNLS) problem with separable nonlinear equality
constraints. The case where the source is known and parameterized is studied with
synthetic data and an inversion for V[subscript p], V[subscript s], V[subscript f] and P[subscript b] is implemented and studied. |
| first_indexed | 2024-09-23T14:59:22Z |
| format | Technical Report |
| id | mit-1721.1/75144 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T14:59:22Z |
| publishDate | 2012 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/751442019-04-10T18:05:06Z The Full Waveform Acoustic Log Inversion Problem Garcia, G. H. Cheng, C. H. Massachusetts Institute of Technology. Earth Resources Laboratory Garcia, G. H. Cheng, C. H. This paper presents the full waveform acoustic log inversion problem for a multisource - multireceiver tool logging a cylindrical fluid-filled borehole. The problem is formulated in the frequency-depth domain. A priori knowledge about the source array spectra and the borehole formation parameters (velocity, attenuation, density) is taken Into account. It is shown that the inversion problem can be formulated as a Separable Nonlinear Least Squares (SNLS) problem with separable nonlinear equality constraints. The case where the source is known and parameterized is studied with synthetic data and an inversion for V[subscript p], V[subscript s], V[subscript f] and P[subscript b] is implemented and studied. Massachusetts Institute of Technology. Full Waveform Acoustic Logging Consortium 2012-12-03T18:04:54Z 2012-12-03T18:04:54Z 1985 Technical Report http://hdl.handle.net/1721.1/75144 Earth Resources Laboratory Industry Consortia Annual Report;1985-06 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | Garcia, G. H. Cheng, C. H. The Full Waveform Acoustic Log Inversion Problem |
| title | The Full Waveform Acoustic Log Inversion Problem |
| title_full | The Full Waveform Acoustic Log Inversion Problem |
| title_fullStr | The Full Waveform Acoustic Log Inversion Problem |
| title_full_unstemmed | The Full Waveform Acoustic Log Inversion Problem |
| title_short | The Full Waveform Acoustic Log Inversion Problem |
| title_sort | full waveform acoustic log inversion problem |
| url | http://hdl.handle.net/1721.1/75144 |
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