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SYSTEM AND METHOD FOR DETECTING A FRACTURE IN A ROCK FORMATION USING AN ELECTROMAGNETIC SOURCE

  • US 20140239956A1
  • Filed: 02/28/2013
  • Published: 08/28/2014
  • Est. Priority Date: 02/28/2013
  • Status: Active Grant
First Claim
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1. A surface electromagnetic (EM) survey system for detecting a fracture or fracture zone in a rock formation, the system comprising:

  • an electromagnetic source configured to generate an electromagnetic field in a vicinity or at a surface of the rock formation, wherein the electromagnetic source includes one or more electric dipole sources that are arranged in the vicinity of the surface or at the surface so as to generate a substantially vertical electric field;

    an electromagnetic receiver associated with the electromagnetic source, the electromagnetic receiver being configured to measure a component of the electromagnetic field at the surface of the rock formation; and

    a processor configured to convert the measured component of the electromagnetic field measured at the electromagnetic receiver into an electromagnetic field response per unit moment of the electromagnetic source, wherein the electromagnetic field response provides information about characteristics parameters of the fracture or fracture zone.

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