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Directional Antennas For Electromagnetic Mapping In a Borehole

United States Patent Application

20160091628
A1
View the Complete Application 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)
CHEVRON U.S.A. INC. (San Ramon CA), LOS ALAMOS NATIONAL SECURITY, LLC (Los Alamos NM)
14/ 498,511
September 26, 2014
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT [0001] 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. PARTIES TO JOINT RESEARCH AGREEMENT [0002] The present disclosure relates generally to the application of heat into a subterranean wellbore. The research work described here was performed under a Cooperative Research and Development Agreement (CRADA) between Los Alamos National Security LLC (LANS) and Chevron U.S.A., Inc. under the LANL-Chevron Alliance, CRADA number LA05C10518.