Multipole seismoelectric logging while drilling (LWD) for acoustic velocity measurements
In seismoelectric well logging, an acoustic wave propagates along a borehole and induces electrical signals along the borehole wall. The apparent velocities of these seismoelectric signals are equal to the formation velocities. Laboratory scale-model multipole acoustic and seismoelectric LWD tools a...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Technical Report |
| Language: | en_US |
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Massachusetts Institute of Technology. Earth Resources Laboratory
2014
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| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/90480 |
| _version_ | 1826190254107787264 |
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| author | Zhu, Zhenya Wang, Jun Toksoz, M. Nafi |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Zhu, Zhenya Wang, Jun Toksoz, M. Nafi |
| author_sort | Zhu, Zhenya |
| collection | MIT |
| description | In seismoelectric well logging, an acoustic wave propagates along a borehole and induces electrical signals along the borehole wall. The apparent velocities of these seismoelectric signals are equal to the formation velocities. Laboratory scale-model multipole acoustic and seismoelectric LWD tools are built to conduct measurements in a borehole drilled into a sandstone formation. The tools include either an acoustic receiver array of an electrode receiver array along with four acoustic sources to allow the generation of monopole, dipole, and quadrupole modes. Results show that the standard acoustic measurement of formation velocities are impacted by strong tool wave contamination in most situations. However, because the propagating tool waves do not induce any electrical signals, the seismoelectric measurements can provide a more robust velocity measurement. The multipole seismoelectric logging-while-drilling (LWD) could be used as a new logging method to measure the acoustic velocities of the
borehole formations. |
| first_indexed | 2024-09-23T08:37:26Z |
| format | Technical Report |
| id | mit-1721.1/90480 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:37:26Z |
| publishDate | 2014 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/904802019-04-09T18:49:31Z Multipole seismoelectric logging while drilling (LWD) for acoustic velocity measurements Zhu, Zhenya Wang, Jun Toksoz, M. Nafi Massachusetts Institute of Technology. Earth Resources Laboratory Logging Seismoelectric In seismoelectric well logging, an acoustic wave propagates along a borehole and induces electrical signals along the borehole wall. The apparent velocities of these seismoelectric signals are equal to the formation velocities. Laboratory scale-model multipole acoustic and seismoelectric LWD tools are built to conduct measurements in a borehole drilled into a sandstone formation. The tools include either an acoustic receiver array of an electrode receiver array along with four acoustic sources to allow the generation of monopole, dipole, and quadrupole modes. Results show that the standard acoustic measurement of formation velocities are impacted by strong tool wave contamination in most situations. However, because the propagating tool waves do not induce any electrical signals, the seismoelectric measurements can provide a more robust velocity measurement. The multipole seismoelectric logging-while-drilling (LWD) could be used as a new logging method to measure the acoustic velocities of the borehole formations. Massachusetts Institute of Technology. Earth Resources Laboratory (Founding Member Consortium) 2014-09-30T16:07:10Z 2014-09-30T16:07:10Z 2012 Technical Report http://hdl.handle.net/1721.1/90480 en_US Earth Resources Laboratory Industry Consortia Annual Report;2012-11 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | Logging Seismoelectric Zhu, Zhenya Wang, Jun Toksoz, M. Nafi Multipole seismoelectric logging while drilling (LWD) for acoustic velocity measurements |
| title | Multipole seismoelectric logging while drilling (LWD) for acoustic velocity measurements |
| title_full | Multipole seismoelectric logging while drilling (LWD) for acoustic velocity measurements |
| title_fullStr | Multipole seismoelectric logging while drilling (LWD) for acoustic velocity measurements |
| title_full_unstemmed | Multipole seismoelectric logging while drilling (LWD) for acoustic velocity measurements |
| title_short | Multipole seismoelectric logging while drilling (LWD) for acoustic velocity measurements |
| title_sort | multipole seismoelectric logging while drilling lwd for acoustic velocity measurements |
| topic | Logging Seismoelectric |
| url | http://hdl.handle.net/1721.1/90480 |
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