Patent ID: 9575205
Date: 2017-02-21
CPC Classifications: G01V

Claim:
1. A method of electromagnetic geophysical data acquisition and processing, the method comprising: acquiring an electromagnetic geophysical data signal using at least one electromagnetic source and a plurality of electromagnetic sensors; computing, using a computer apparatus comprising at least a processor, memory and executable code, quantified uncertainties associated with the electromagnetic geophysical data signal; selecting, using the computer apparatus, a subset of frequencies based on the quantified uncertainties by a process loop that computes quantified uncertainties for a plurality of candidate subsets of frequencies, each said candidate subset comprising a plurality of frequencies and including less than a set of all frequencies in the electromagnetic geophysical data signal, and selects one candidate subset of frequencies having a minimum quantified uncertainty; inverting, using the computer apparatus, the electromagnetic geophysical data signal for the subset of the frequencies to determine the earth response; and using the spatial distribution in locating hydrocarbons for recovery.