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US 6,851,511 B2Granted
Drive assembly for acoustic sources
OwnerStig Rune Lennart Tenghamninventor
Life of this patent
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Abstract
In one embodiment of the present invention, a drive assembly for a seismic land vibrator is provided. The drive assembly comprises at least a first spring element. The first spring element operates in at least two vibration modes in a seismic frequency band of interest. The drive assembly also comprises a baseplate, a driver, and a reaction mass. The driver interacts with the reaction mass and the first spring element to transfer energy to the baseplate.
Claims16
A drive assembly for imparting acoustic energy to the earth's surface, comprising:
- a baseplate;
- a reaction mass;
- a driver for imparting force to the baseplate, thereby transmitting acoustic energy into the earth, said driver being connected between the baseplate and the reaction mass by a spring;
- and
- said spring intrinsically having a first resonant frequency in a first vibration mode and a second resonant frequency in a second vibration mode, said first and second resonant frequencies being within a frequency band of interest.
2 more elements
A water bottom vibrator assembly, the vibrator assembly comprising:
- a vibrator including a baseplate, said baseplate being adapted for transmitting seismic energy into the water bottom;
- a reaction mass;
- a driver for imparting force to the baseplate, thereby transmitting acoustic energy into the earth, said driver being connected between the baseplate and the reaction mass by a spring, said spring intrinsically having a first resonant frequency in a first vibration mode and a second resonant frequency in a second vibration mode, said first and second resonant frequencies being within a frequency band of interest;
- a cover for said vibrator connected to said baseplate by means of a decoupler;
- and
- wherein movement of the baseplate is decoupled by said decoupler from movement of the cover.
3 more elements
Dependencies are inferred from the claim text.