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:
- Issue Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1166747
- Patent Number(s):
- 8923092
- Application Number:
- 13/292,915
- Assignee:
- Chevron U.S.A. Inc. (San Ramon, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61P - SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- 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. 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 = {2014},
month = {12}
}
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