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Title: System and method for investigating sub-surface features of a rock formation with acoustic sources generating coded signals

Abstract

A system and a method for investigating rock formations includes generating, by a first acoustic source, a first acoustic signal comprising a first plurality of pulses, each pulse including a first modulated signal at a central frequency; and generating, by a second acoustic source, a second acoustic signal comprising a second plurality of pulses. A receiver arranged within the borehole receives a detected signal including a signal being generated by a non-linear mixing process from the first-and-second acoustic signal in a non-linear mixing zone within the intersection volume. The method also includes-processing the received signal to extract the signal generated by the non-linear mixing process over noise or over signals generated by a linear interaction process, or both.

Inventors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1166747
Patent Number(s):
8,923,092
Application Number:
13/292,915
Assignee:
Chevron U.S.A. Inc. (San Ramon, CA) 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; 47 OTHER INSTRUMENTATION

Citation Formats

Vu, Cung Khac, 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 with acoustic sources generating coded signals. United States: N. p., 2014. Web.
Vu, Cung Khac, 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 with acoustic sources generating coded signals. United States.
Vu, Cung Khac, 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 with acoustic sources generating coded signals". United States. doi:. https://www.osti.gov/servlets/purl/1166747.
@article{osti_1166747,
title = {System and method for investigating sub-surface features of a rock formation with acoustic sources generating coded signals},
author = {Vu, Cung Khac 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 a method for investigating rock formations includes generating, by a first acoustic source, a first acoustic signal comprising a first plurality of pulses, each pulse including a first modulated signal at a central frequency; and generating, by a second acoustic source, a second acoustic signal comprising a second plurality of pulses. A receiver arranged within the borehole receives a detected signal including a signal being generated by a non-linear mixing process from the first-and-second acoustic signal in a non-linear mixing zone within the intersection volume. The method also includes-processing the received signal to extract the signal generated by the non-linear mixing process over noise or over signals generated by a linear interaction process, or both.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 30 00:00:00 EST 2014},
month = {Tue Dec 30 00:00:00 EST 2014}
}

Patent:

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