Seismic vibrator having airwave suppression
US8689930B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2012 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Apr 21, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/135
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A seismic vibrator includes a baseplate having a surface configured to couple to a ground surface. A driver is coupled to the baseplate and is configured to move the baseplate in a vibratory manner. A decoupling system is coupled to a part of the baseplate other than the ground-contacting surface. The decoupling system includes a first layer having a Young's modulus greater than that of a second layer coupled to the first layer. The second layer is coupled to the baseplate. The Young's moduli, thicknesses and masses of the first and second layer are selected to provide the decoupling system with a resonant frequency of at most, a spatial aliasing frequency of seismic sensors deployed on the ground surface or a lowest seismic frequency of interest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.