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Downhole fluid characterization methods and systems using multi-electrode configurations

  • US 10,190,411 B2
  • Filed: 11/12/2015
  • Issued: 01/29/2019
  • Est. Priority Date: 11/12/2015
  • Status: Active Grant
First Claim
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1. A method comprising:

  • placing a tubular base structure having a multi-electrode configuration disposed thereon in at least a portion of a well bore penetrating at least a portion of a subterranean formation, the multi-electrode configuration comprising at least first and second electrodes with a dielectric layer between the tubular base structure and the electrodes, wherein the first electrode is positioned at a first height radially from an outer surface of the tubular base structure and at least another of the electrodes is positioned at a second height radially from an outer surface of the tubular base structure that is greater than or less than the first height, wherein the tubular base structure comprises a casing;

    collecting electromagnetic measurements using the multi-electrode configuration; and

    processing the electromagnetic measurements to obtain a characterization of at least one fluid in an annulus between the tubular base structure and an inner wall of the well bore.

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