Multi-Shot Processing For Better Velocity Determination
We develop a linear programming inversion scheme to estimate lithology from well log data. The inversion described severely limits the dependence on core retrieval, and makes accurate mapping of new parameters possible. There are no limitations on the number of input well logs or output lithologi...
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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/1721.1/75146 |
| _version_ | 1811087689531785216 |
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| author | Mendelson, Jim |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Mendelson, Jim |
| author_sort | Mendelson, Jim |
| collection | MIT |
| description | We develop a linear programming inversion scheme to estimate lithology from well log
data. The inversion described severely limits the dependence on core retrieval, and
makes accurate mapping of new parameters possible. There are no limitations on the
number of input well logs or output lithologic fractions. Because the method uses an
L-I norm error measure, it should be more ·robust than otherwise similar techniques.
Other advantages of the technique include the straightforward imposition of inequality
constraints, and strictly positive volume fraction results. As specific examples we apply
the method in a variety of geologic situations, and compare our results to those achieved
via coring. We also test the new method against conventional least squares inversion
algorithms. While both methods perform well, the linear programming inversion yields
improved results when formation petrophysical properties are not known accurately. |
| first_indexed | 2024-09-23T13:50:27Z |
| format | Technical Report |
| id | mit-1721.1/75146 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T13:50:27Z |
| publishDate | 2012 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/751462019-04-10T18:05:06Z Multi-Shot Processing For Better Velocity Determination Mendelson, Jim Massachusetts Institute of Technology. Earth Resources Laboratory Mendelson, Jim We develop a linear programming inversion scheme to estimate lithology from well log data. The inversion described severely limits the dependence on core retrieval, and makes accurate mapping of new parameters possible. There are no limitations on the number of input well logs or output lithologic fractions. Because the method uses an L-I norm error measure, it should be more ·robust than otherwise similar techniques. Other advantages of the technique include the straightforward imposition of inequality constraints, and strictly positive volume fraction results. As specific examples we apply the method in a variety of geologic situations, and compare our results to those achieved via coring. We also test the new method against conventional least squares inversion algorithms. While both methods perform well, the linear programming inversion yields improved results when formation petrophysical properties are not known accurately. Massachusetts Institute of Technology. Full Waveform Acoustic Logging Consortium Ente nazionale per l'energia elettrica Integrated Ocean Drilling Program 2012-12-03T18:18:14Z 2012-12-03T18:18:14Z 1989 Technical Report http://hdl.handle.net/1721.1/75146 Earth Resources Laboratory Industry Consortia Annual Report;1989-10 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | Mendelson, Jim Multi-Shot Processing For Better Velocity Determination |
| title | Multi-Shot Processing For Better Velocity Determination |
| title_full | Multi-Shot Processing For Better Velocity Determination |
| title_fullStr | Multi-Shot Processing For Better Velocity Determination |
| title_full_unstemmed | Multi-Shot Processing For Better Velocity Determination |
| title_short | Multi-Shot Processing For Better Velocity Determination |
| title_sort | multi shot processing for better velocity determination |
| url | http://hdl.handle.net/1721.1/75146 |
| work_keys_str_mv | AT mendelsonjim multishotprocessingforbettervelocitydetermination |