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Title: System and method for investigating sub-surface features of a rock formation using compressional acoustic sources

Abstract

A system and method for investigating rock formations outside a borehole are provided. The method includes generating a first compressional acoustic wave at a first frequency by a first acoustic source; and generating a second compressional acoustic wave at a second frequency by a second acoustic source. The first and the second acoustic sources are arranged within a localized area of the borehole. The first and the second acoustic waves intersect in an intersection volume outside the borehole. The method further includes receiving a third shear acoustic wave at a third frequency, the third shear acoustic wave returning to the borehole due to a non-linear mixing process in a non-linear mixing zone within the intersection volume at a receiver arranged in the borehole. The third frequency is equal to a difference between the first frequency and the second frequency.

Inventors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1326806
Patent Number(s):
9,453,926
Application Number:
13/292,908
Assignee:
Los Alamos National Security LLC (Los Alamos, NM) LANL
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Nov 09
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES

Citation Formats

Vu, Cung Khac, Skelt, Christopher, Nihei, Kurt, Johnson, Paul A., Guyer, Robert, Ten Cate, James A., Le Bas, Pierre-Yves, and Larmat, Carene S. System and method for investigating sub-surface features of a rock formation using compressional acoustic sources. United States: N. p., 2016. Web.
Vu, Cung Khac, Skelt, Christopher, Nihei, Kurt, Johnson, Paul A., Guyer, Robert, Ten Cate, James A., Le Bas, Pierre-Yves, & Larmat, Carene S. System and method for investigating sub-surface features of a rock formation using compressional acoustic sources. United States.
Vu, Cung Khac, Skelt, Christopher, Nihei, Kurt, Johnson, Paul A., Guyer, Robert, Ten Cate, James A., Le Bas, Pierre-Yves, and Larmat, Carene S. Tue . "System and method for investigating sub-surface features of a rock formation using compressional acoustic sources". United States. doi:. https://www.osti.gov/servlets/purl/1326806.
@article{osti_1326806,
title = {System and method for investigating sub-surface features of a rock formation using compressional acoustic sources},
author = {Vu, Cung Khac and Skelt, Christopher and Nihei, Kurt and Johnson, Paul A. and Guyer, Robert and Ten Cate, James A. and Le Bas, Pierre-Yves and Larmat, Carene S.},
abstractNote = {A system and method for investigating rock formations outside a borehole are provided. The method includes generating a first compressional acoustic wave at a first frequency by a first acoustic source; and generating a second compressional acoustic wave at a second frequency by a second acoustic source. The first and the second acoustic sources are arranged within a localized area of the borehole. The first and the second acoustic waves intersect in an intersection volume outside the borehole. The method further includes receiving a third shear acoustic wave at a third frequency, the third shear acoustic wave returning to the borehole due to a non-linear mixing process in a non-linear mixing zone within the intersection volume at a receiver arranged in the borehole. The third frequency is equal to a difference between the first frequency and the second frequency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 27 00:00:00 EDT 2016},
month = {Tue Sep 27 00:00:00 EDT 2016}
}

Patent:

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