System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole
Abstract
In some aspects of the disclosure, a method for creating three-dimensional images of non-linear properties and the compressional to shear velocity ratio in a region remote from a borehole using a conveyed logging tool is disclosed. In some aspects, the method includes arranging a first source in the borehole and generating a steered beam of elastic energy at a first frequency; arranging a second source in the borehole and generating a steerable beam of elastic energy at a second frequency, such that the steerable beam at the first frequency and the steerable beam at the second frequency intercept at a location away from the borehole; receiving at the borehole by a sensor a third elastic wave, created by a three wave mixing process, with a frequency equal to a difference between the first and second frequencies and a direction of propagation towards the borehole; determining a location of a three wave mixing region based on the arrangement of the first and second sources and on properties of the third wave signal; and creating three-dimensional images of the non-linear properties using data recorded by repeating the generating, receiving and determining at a plurality of azimuths, inclinations and longitudinal locations within themore »
- Inventors:
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1082923
- Patent Number(s):
- 8345509
- Application Number:
- 12/463,802
- Assignee:
- Chevron U.S.A., Inc. (San Ramon, CA) ; Los Alamos National Security (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, Nihei, Kurt T., Schmitt, Denis P., Skelt, Christopher, Johnson, Paul A., Guyer, Robert, TenCate, James A., and Le Bas, Pierre-Yves. System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole. United States: N. p., 2013.
Web.
Vu, Cung, Nihei, Kurt T., Schmitt, Denis P., Skelt, Christopher, Johnson, Paul A., Guyer, Robert, TenCate, James A., & Le Bas, Pierre-Yves. System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole. United States.
Vu, Cung, Nihei, Kurt T., Schmitt, Denis P., Skelt, Christopher, Johnson, Paul A., Guyer, Robert, TenCate, James A., and Le Bas, Pierre-Yves. Tue .
"System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole". United States. https://www.osti.gov/servlets/purl/1082923.
@article{osti_1082923,
title = {System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole},
author = {Vu, Cung and Nihei, Kurt T. and Schmitt, Denis P. and Skelt, Christopher and Johnson, Paul A. and Guyer, Robert and TenCate, James A. and Le Bas, Pierre-Yves},
abstractNote = {In some aspects of the disclosure, a method for creating three-dimensional images of non-linear properties and the compressional to shear velocity ratio in a region remote from a borehole using a conveyed logging tool is disclosed. In some aspects, the method includes arranging a first source in the borehole and generating a steered beam of elastic energy at a first frequency; arranging a second source in the borehole and generating a steerable beam of elastic energy at a second frequency, such that the steerable beam at the first frequency and the steerable beam at the second frequency intercept at a location away from the borehole; receiving at the borehole by a sensor a third elastic wave, created by a three wave mixing process, with a frequency equal to a difference between the first and second frequencies and a direction of propagation towards the borehole; determining a location of a three wave mixing region based on the arrangement of the first and second sources and on properties of the third wave signal; and creating three-dimensional images of the non-linear properties using data recorded by repeating the generating, receiving and determining at a plurality of azimuths, inclinations and longitudinal locations within the borehole. The method is additionally used to generate three dimensional images of the ratio of compressional to shear acoustic velocity of the same volume surrounding the borehole.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {1}
}
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