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Electrically conductive proppant and methods for detecting, locating and characterizing the electrically conductive proppant

United States Patent

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January 21, 2020
View the Complete Patent at the US Patent & Trademark Office
Electrically conductive proppants and methods for detecting, locating, and characterizing same are provided. The electrically conductive proppant can include a substantially uniform coating of an electrically conductive material having a thickness of at least 500 nm. The method can include injecting a hydraulic fluid into a wellbore extending into a subterranean formation at a rate and pressure sufficient to open a fracture therein, injecting into the fracture a fluid containing the electrically conductive proppant, electrically energizing the earth at or near the fracture, and measuring three dimensional (x, y, and z) components of electric and magnetic field responses at a surface of the earth or in an adjacent wellbore.
14/ 593,447
January 9, 2015
E21B 47/09 (20120101)C09K 8/80 (20060101)E21B 43/25 (20060101)E21B 43/26 (20060101)C23C 14/35 (20060101)C23C 14/06 (20060101)E21B 47/00 (20120101)
STATEMENT OF GOVERNMENTAL INTEREST This invention was made under a CRADA (SC11/01780.00) between CARBO Ceramics, Inc. and Sandia National Laboratories, operated for the United States Department of Energy. The Government has certain rights in this invention.