Invention Grant
US08371416B2 Constant holddown weight for vibratory seismic sources 失效
振动地震源的恒定压载重量

Constant holddown weight for vibratory seismic sources
Abstract:
The invention relates to maintaining constant holddown force on the vibrator baseplate during actuation. The invention described measures the weight on the point of locomotion verses the baseplate and dynamically adjusts the forces required to keep the holddown force on the baseplate constant.
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