Advances on land vibroseis source technology towards low frequencies Available to Purchase

Low frequency Vibroseis acquisition has become a routine operation in land seismic exploration. During the past years, the challenge of extending the Vibroseis acquisition bandwidth towards low frequencies has been partially overcome by the low dwell sweep design. However, the vibrator still experiences its mechanical and hydraulic limitations at low frequencies, and less ground force is output from the vibrator. How to increase the vibrator ground force at low frequencies (< 10 Hz), particularly below 3 Hz? Can the vibrator control electronics effectively suppress harmonic distortion at low frequencies? This paper attempts to provide a fresh look on these questions with a new generation low frequency vibrator and a HDR feature from a vibrator control electronics.