Patent ID: 7502690

Claim:
A method of processing EM data for use in geophysical exploration of a predetermined volume of the earth containing structural and stratigraphic features conducive to the generation, migration, accumulation, or presence of hydrocarbons, comprising the steps of: (a) acquiring an EM survey that covers at least a portion of said predetermined volume of the earth, said survey comprising a plurality of EM traces; (b) selecting at least one of said EM traces; (c) selecting a plurality of different frequencies; (d) selecting a value of a parameter Q, wherein said parameter Q is a quality factor related to a transmission of EM data; (e) correcting each of said at least one selected EM traces for at least one of attenuation and dispersion at each of said selected plurality of frequencies according to said parameter Q, thereby producing a plurality of processed EM traces; and, (f) writing at least a portion of said processed EM traces to computer storage.