The complexity of vibrator baseplate-ground interaction measured with a thin-film pressure pad and a downhole tool
When a seismic hydraulic vibrator sweeps, it emits the signal we desire as well as a series of harmonics due to the non-linear behaviour of the hydraulic system and the baseplate-earth contact. The phase of the fundamental component of the transmitted signal also varies significantly from that of th...
| Main Authors: | , , , , |
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| Format: | Conference Paper |
| Published: |
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/60290 |
| _version_ | 1848760595209256960 |
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| author | Dean, Tim Vermeer, P. Laycock, M. Tulett, J. Lane, D. |
| author_facet | Dean, Tim Vermeer, P. Laycock, M. Tulett, J. Lane, D. |
| author_sort | Dean, Tim |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | When a seismic hydraulic vibrator sweeps, it emits the signal we desire as well as a series of harmonics due to the non-linear behaviour of the hydraulic system and the baseplate-earth contact. The phase of the fundamental component of the transmitted signal also varies significantly from that of the pilot, which results in distortion of the Klauder wavelet. If we could record a more accurate estimate of the transmitted signal we could improve the signal itself (through the feedback loop of the vibrator's controller) and/or reduce its effects during processing. In this paper we show that the pressure distribution beneath the baseplate is more complex than previously thought but that thin-film pressure pads are a promising method for measuring the signature of a vibrator. |
| first_indexed | 2025-11-14T10:18:16Z |
| format | Conference Paper |
| id | curtin-20.500.11937-60290 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:18:16Z |
| publishDate | 2015 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-602902018-06-29T01:12:11Z The complexity of vibrator baseplate-ground interaction measured with a thin-film pressure pad and a downhole tool Dean, Tim Vermeer, P. Laycock, M. Tulett, J. Lane, D. When a seismic hydraulic vibrator sweeps, it emits the signal we desire as well as a series of harmonics due to the non-linear behaviour of the hydraulic system and the baseplate-earth contact. The phase of the fundamental component of the transmitted signal also varies significantly from that of the pilot, which results in distortion of the Klauder wavelet. If we could record a more accurate estimate of the transmitted signal we could improve the signal itself (through the feedback loop of the vibrator's controller) and/or reduce its effects during processing. In this paper we show that the pressure distribution beneath the baseplate is more complex than previously thought but that thin-film pressure pads are a promising method for measuring the signature of a vibrator. 2015 Conference Paper http://hdl.handle.net/20.500.11937/60290 10.3997/2214-4609.201413129 restricted |
| spellingShingle | Dean, Tim Vermeer, P. Laycock, M. Tulett, J. Lane, D. The complexity of vibrator baseplate-ground interaction measured with a thin-film pressure pad and a downhole tool |
| title | The complexity of vibrator baseplate-ground interaction measured with a thin-film pressure pad and a downhole tool |
| title_full | The complexity of vibrator baseplate-ground interaction measured with a thin-film pressure pad and a downhole tool |
| title_fullStr | The complexity of vibrator baseplate-ground interaction measured with a thin-film pressure pad and a downhole tool |
| title_full_unstemmed | The complexity of vibrator baseplate-ground interaction measured with a thin-film pressure pad and a downhole tool |
| title_short | The complexity of vibrator baseplate-ground interaction measured with a thin-film pressure pad and a downhole tool |
| title_sort | complexity of vibrator baseplate-ground interaction measured with a thin-film pressure pad and a downhole tool |
| url | http://hdl.handle.net/20.500.11937/60290 |