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Device and method for imaging of non-linear and linear properties of formations surrounding a borehole

United States Patent

November 5, 2013
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
In some aspects of the disclosure, a method and an apparatus is disclosed for investigating material surrounding the borehole. The method includes generating a first low frequency acoustic wave within the borehole, wherein the first low frequency acoustic wave induces a linear and a nonlinear response in one or more features in the material that are substantially perpendicular to a radius of the borehole; directing a first sequence of high frequency pulses in a direction perpendicularly with respect to the longitudinal axis of the borehole into the material contemporaneously with the first acoustic wave; and receiving one or more second high frequency pulses at one or more receivers positionable in the borehole produced by an interaction between the first sequence of high frequency pulses and the one or more features undergoing linear and nonlinear elastic distortion due to the first low frequency acoustic wave to investigate the material surrounding the borehole
Johnson; Paul A. (Santa Fe, NM), Tencate; James A. (Los Alamos, NM), Le Bas; Pierre-Yves (Los Alamos, NM), Guyer; Robert (Reno, NV), Vu; Cung Khac (Houston, TX), Skelt; Christopher (Houston, TX)
Chevron U.S.A. Inc. (Sam Ramon, CA)
12/ 893,530
September 29, 2010
GOVERNMENT RIGHTS This invention was made with Government support under Cooperative Research and Development Agreement (CRADA) Contract Number DE-AC52-06NA25396 awarded by the United States Department of Energy. The Government may have certain rights in this invention.