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Title: System for generating a beam of acoustic energy from a borehole, and applications thereof

Abstract

In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1078290
Patent Number(s):
8259530
Application Number:
12/870,604
Assignee:
Chevron U.S.A. Inc. (San Ramon, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Vu, Cung Khac, Sinha, Dipen N., Pantea, Cristian, Nihei, Kurt T., Schmitt, Denis P., and Skelt, Christopher. System for generating a beam of acoustic energy from a borehole, and applications thereof. United States: N. p., 2012. Web.
Vu, Cung Khac, Sinha, Dipen N., Pantea, Cristian, Nihei, Kurt T., Schmitt, Denis P., & Skelt, Christopher. System for generating a beam of acoustic energy from a borehole, and applications thereof. United States.
Vu, Cung Khac, Sinha, Dipen N., Pantea, Cristian, Nihei, Kurt T., Schmitt, Denis P., and Skelt, Christopher. Tue . "System for generating a beam of acoustic energy from a borehole, and applications thereof". United States. https://www.osti.gov/servlets/purl/1078290.
@article{osti_1078290,
title = {System for generating a beam of acoustic energy from a borehole, and applications thereof},
author = {Vu, Cung Khac and Sinha, Dipen N. and Pantea, Cristian and Nihei, Kurt T. and Schmitt, Denis P. and Skelt, Christopher},
abstractNote = {In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {9}
}

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Works referenced in this record:

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Ultrasonic Study of Three-Phonon Interactions. II. Experimental Results
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Interaction of Elastic Waves in an Isotropic Solid
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