Patent ID: 6664788
Filing Date: 2003-12-16
Classification: G01V,Y02A

Abstract:
A method for electroseismic prospecting of a subterranean formation, said method comprising the steps of:(a) selecting a source waveform and a reference waveform, said source and reference waveforms being selected (i) to reduce amplitudes of side lobes produced by correlation of the square of the source waveform with the reference waveform, and (ii) to reduce interference between said correlation and a correlation of the source waveform with the reference waveform; (b) generating the source waveform as an electrical signal and transmitting it into the subterranean formation; (c) detecting and recording seismic signals resulting from conversion of the electrical energy into seismic energy in the subterranean formation; and (d) correlating the recorded seismic signals with the reference waveform.