Patent ID: 8644110
Filing Date: 2014-02-04
Classification: G01V

Abstract:
1. A method of seismic surveying, the method comprising: deploying at least a first and a second seismic sensors at a location for seismic signal detection, wherein the two sensors have different bandwidth and each has a different natural frequency; acquiring seismic signals with the at least two seismic sensors, the seismic signals comprising response signals having frequency spectra of low and high frequencies, wherein at high frequencies, the response signals include sensor dependent spurious response signals whose frequencies are at least 20 times the natural frequencies; applying spurious response cancellation based on the high frequency locations of the spurious response signals, wherein the spurious response cancellation comprises summing the seismic signals acquired by the first seismic sensor and the second seismic sensor with cross-over based on the two different bandwidths; and generating modified seismic waveforms having extended frequency bandwidth wherein the extended bandwidth is above the lowest spurious frequency.