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Directional antennas for electromagnetic mapping in a borehole

United States Patent

9,638,827
May 2, 2017
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
A bottom hole assembly used for a field operation is disclosed herein. The bottom hole assembly can include at least one directional antenna disposed on an outer surface of a first tubing pipe of a tubing string, where the at least one directional antenna receives a first electric current from at least one power source, where the first electric current generates a first magnetic field that radiates from the at least one directional antenna into a formation. The bottom hole assembly can also include at least one receiver disposed on a second tubing pipe of the tubing string, where the at least one receiver receives the first magnetic field returning from the formation.
Reagor; David Wesley (Los Alamos, NM), Nguyen; Doan Ngoc (Los Alamos, NM), Ashworth; Stephen Paul (Gallicano, IT)
LOS ALAMOS NATIONAL SECURITY, LLC (Los Alamos, NM), CHEVRON U.S.A. INC. (San Ramon, CA)
14/ 498,511
20160091628
September 26, 2014
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT This invention was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The government has certain rights in the invention.