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

Abstract

In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first broad-band acoustic pulse at a first broad-band frequency range having a first central frequency and a first bandwidth spread; generating a second broad-band acoustic pulse at a second broad-band frequency range different than the first frequency range having a second central frequency and a second bandwidth spread, wherein the first acoustic pulse and second acoustic pulse are generated by at least one transducer arranged on a tool located within the borehole; and transmitting the first and the second broad-band acoustic pulses into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated pulse by a non-linear mixing of the first and second acoustic pulses, wherein the collimated pulse has a frequency equal to the difference in frequencies between the first central frequency and the second central frequency and a bandwidth spread equal to the sum of the first bandwidth spread and the second bandwidth spread.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1107357
Patent Number(s):
8547791
Application Number:
12/793,420
Assignee:
Chevron U.S.A. Inc. (San Ramon, CA); Los Alamos National Security LLC (Los Alamos, NM)
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. Device and method for generating a beam of acoustic energy from a borehole, and applications thereof. United States: N. p., 2013. Web.
Vu, Cung Khac, Sinha, Dipen N, Pantea, Cristian, Nihei, Kurt T, Schmitt, Denis P, & Skelt, Christopher. Device and method 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 . "Device and method for generating a beam of acoustic energy from a borehole, and applications thereof". United States. https://www.osti.gov/servlets/purl/1107357.
@article{osti_1107357,
title = {Device and method 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 method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first broad-band acoustic pulse at a first broad-band frequency range having a first central frequency and a first bandwidth spread; generating a second broad-band acoustic pulse at a second broad-band frequency range different than the first frequency range having a second central frequency and a second bandwidth spread, wherein the first acoustic pulse and second acoustic pulse are generated by at least one transducer arranged on a tool located within the borehole; and transmitting the first and the second broad-band acoustic pulses into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated pulse by a non-linear mixing of the first and second acoustic pulses, wherein the collimated pulse has a frequency equal to the difference in frequencies between the first central frequency and the second central frequency and a bandwidth spread equal to the sum of the first bandwidth spread and the second bandwidth spread.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {10}
}

Works referenced in this record:

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