Patent ID: 8134891
Filing Date: 2012-03-13
Classification: G01V

Abstract:
1. A seismic source signal apparatus for generating a seismic source signal, the apparatus comprising: a seismic source component for coupling to the earth; one or more sensors sensing an initial parameter and an operating parameter of the seismic source component, the initial parameter comprising a first hydraulic supply pressure and a first hydraulic control pressure of the seismic source component, the operating parameter comprising a second hydraulic supply pressure and a second hydraulic control pressure of the seismic source component; and a controller processing the initial parameter and processing the operating parameter during operation of the seismic source component, the controller generating a feed-forward signal with the processed initial and operating parameters and controlling the seismic source component using the feed-forward signal, wherein an output of the seismic source component includes the seismic source signal imparted into the earth with harmonic distortions generated by the seismic source component at least partially removed from the seismic source signal.