Patent ID: 7941273

Claim:
A method of collecting and processing EM data for use in geophysical exploration within 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) collecting an EM survey that images 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, each of said selected EM traces having a source-receiver distance associated therewith, and each of said selected EM traces having a plurality of EM samples organized in natural time associated therewith; (c) selecting at least one time-distance processing algorithm; (d) applying said at least one time-distance processing algorithm to said selected EM traces and said samples associated therewith using said at least one time-distance processing algorithm at least according to said associated source-receiver distances and said selected EM trace samples, thereby producing a plurality of processed EM traces; and, (e) writing at least a portion of said processed EM traces to computer storage.