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Techniques for surface exploration and monitoring

  • US 8,965,705 B2
  • Filed: 02/18/2013
  • Issued: 02/24/2015
  • Est. Priority Date: 04/18/2003
  • Status: Active Grant
First Claim
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1. A system for introducing electrical currents into a surface as stimulus for geophysical measurements, the system comprising:

  • a plurality of survey probes for electrode contact with the surface at respective points thereof, wherein respective ones of the survey probes are configurable as current injection-type and current receiver-type survey probes for introduction of the electrical current stimulus into the surface;

    a current injection power supply coupled to supply the electrical current to, and to receive return current from, respective ones of the survey probes;

    a controller is configured to individually and selectively program plural of the current injection-type survey probes to inject current into the surface and to individually and selectively program plural of the current receiver-type survey probes to provide respective return paths for current injected into the surface; and

    cable segments suitable for electrically connecting the controller to a first one of the survey probes and for electrically interconnecting each successive downstream neighbor survey probe to a next successive downstream neighbor survey probe,wherein the controller is configured to execute a startup sequence that polls the survey probes using signals conveyed via the cable segments to determine a relative interconnected order of the survey probes.

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