Off-Center Monopole And Dipole Sources In Fluid-Filled Boreholes
A variety of seismic testing techniques rely on the use of seismic sources, detectors, or both, placed at some depth below the ground surface; these are often installed within fluid-filled boreholes. The interpretation of the records obtained in the course of such explorations requires a thorough...
| 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/1721.1/75321 |
| _version_ | 1811086494171922432 |
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| author | Tadeu, Antonio J. B. Toksoz, M. Nafi Kausel, Eduardo |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Tadeu, Antonio J. B. Toksoz, M. Nafi Kausel, Eduardo |
| author_sort | Tadeu, Antonio J. B. |
| collection | MIT |
| description | A variety of seismic testing techniques rely on the use of seismic sources, detectors, or
both, placed at some depth below the ground surface; these are often installed within
fluid-filled boreholes. The interpretation of the records obtained in the course of such
explorations requires a thorough understanding of how waves propagate in the borehole
and its immediate vicinity. Depending on the distance between the source and the
receiver as well as their placement and orientation relative to the axis of the borehole, it is known that very complex wave patterns may arise. In this paper, analytical-numerical solutions are used to study the wave-field elicited by monopole or dipole sources within a fluid-filled cylindrical cavity drilled through an unbounded homogeneous elastic medium. This model is used to assess the effects of a source-receiver tool, placed in an off-centered and/or tilted position inside the fluid-filled borehole, on the propagation of both axisymmetric and non-axisymmetric wave modes. |
| first_indexed | 2024-09-23T13:26:49Z |
| format | Technical Report |
| id | mit-1721.1/75321 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T13:26:49Z |
| publishDate | 2012 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/753212019-04-10T23:56:53Z Off-Center Monopole And Dipole Sources In Fluid-Filled Boreholes Tadeu, Antonio J. B. Toksoz, M. Nafi Kausel, Eduardo Massachusetts Institute of Technology. Earth Resources Laboratory Toksoz, M. Nafi Kausel, Eduardo A variety of seismic testing techniques rely on the use of seismic sources, detectors, or both, placed at some depth below the ground surface; these are often installed within fluid-filled boreholes. The interpretation of the records obtained in the course of such explorations requires a thorough understanding of how waves propagate in the borehole and its immediate vicinity. Depending on the distance between the source and the receiver as well as their placement and orientation relative to the axis of the borehole, it is known that very complex wave patterns may arise. In this paper, analytical-numerical solutions are used to study the wave-field elicited by monopole or dipole sources within a fluid-filled cylindrical cavity drilled through an unbounded homogeneous elastic medium. This model is used to assess the effects of a source-receiver tool, placed in an off-centered and/or tilted position inside the fluid-filled borehole, on the propagation of both axisymmetric and non-axisymmetric wave modes. 2012-12-10T18:01:56Z 2012-12-10T18:01:56Z 1996 Technical Report http://hdl.handle.net/1721.1/75321 Earth Resources Laboratory Industry Consortia Annual Report;1996-05 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | Tadeu, Antonio J. B. Toksoz, M. Nafi Kausel, Eduardo Off-Center Monopole And Dipole Sources In Fluid-Filled Boreholes |
| title | Off-Center Monopole And Dipole Sources In Fluid-Filled Boreholes |
| title_full | Off-Center Monopole And Dipole Sources In Fluid-Filled Boreholes |
| title_fullStr | Off-Center Monopole And Dipole Sources In Fluid-Filled Boreholes |
| title_full_unstemmed | Off-Center Monopole And Dipole Sources In Fluid-Filled Boreholes |
| title_short | Off-Center Monopole And Dipole Sources In Fluid-Filled Boreholes |
| title_sort | off center monopole and dipole sources in fluid filled boreholes |
| url | http://hdl.handle.net/1721.1/75321 |
| work_keys_str_mv | AT tadeuantoniojb offcentermonopoleanddipolesourcesinfluidfilledboreholes AT toksozmnafi offcentermonopoleanddipolesourcesinfluidfilledboreholes AT kauseleduardo offcentermonopoleanddipolesourcesinfluidfilledboreholes |