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Method and apparatus for determining the nature of submarine reservoirs

  • US 7,567,084 B2
  • Filed: 03/17/2004
  • Issued: 07/28/2009
  • Est. Priority Date: 03/17/2003
  • Status: Expired due to Fees
First Claim
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1. A method of producing a survey report of subterranean strata which comprises:

  • deploying an electromagnetic (EM) field transmitter;

    deploying a seismic source at substantially the same location as the EM field transmitter;

    deploying an EM field receiver at a predetermined offset distance from the transmitter;

    deploying a seismic receiver at substantially the same location as the EM field receiver;

    applying an EM field to the strata using the EM field transmitter;

    detecting the EM wave field response using the EM field receiver;

    applying a seismic event to the strata using the seismic source at substantially the same location as the EM field transmitter;

    detecting the seismic response using the seismic receiver at substantially the same location as the EM field receiver;

    analyzing the EM wave field response;

    analyzing the seismic response;

    reconciling the two responses, in order to produce a report on the presence and nature of the strata;

    identifying the refracted wave component of the EM wave field response;

    identifying the refracted wave component of the seismic response; and

    using the two refracted wave components to produce the survey report.

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