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Simulating current flow through a well casing and an induced fracture

United States Patent

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September 8, 2020
View the Complete Patent at the US Patent & Trademark Office
A system includes a receiver component that receives a model of a well system, the model comprising a representation of an electrically energized well casing and/or a fracture as a transmission line that leaks electric current as the current traverses the well casing and/or fracture. The receiver component also receives a value that indicates an amount of the current that is applied to the well casing and a location of a source of the current on the well casing. The system further includes an electromagnetic field calculator component that calculates an estimated electromagnetic field at at least one location on the surface of the earth based at least in part upon the representation of the electrically energized well casing and/or fracture, the value that indicates the amount of current that is applied to the well casing, and the location of the source of the current on the well casing.
15/ 412,374
January 23, 2017
E21B 47/022 (20120101)G01V 3/20 (20060101)G06F 17/11 (20060101)G06F 30/30 (20200101)E21B 43/26 (20060101)G01V 99/00 (20090101)E21B 17/00 (20060101)E21B 41/00 (20060101)
STATEMENT OF GOVERNMENTAL INTEREST This invention was developed under contract DE-AC04-94AL85000 between Sandia Corporation and the U.S. Department of Energy. The U.S. Government has certain rights in this invention.