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System and method for generating micro-seismic events and characterizing properties of a medium with non-linear acoustic interactions

Patent ·
OSTI ID:1234213

A method and system includes generating a first coded acoustic signal including pulses each having a modulated signal at a central frequency; and a second coded acoustic signal each pulse of which includes a modulated signal a central frequency of which is a fraction d of the central frequency of the modulated signal for the corresponding pulse in the first plurality of pulses. A receiver detects a third signal generated by a non-linear mixing process in the mixing zone and the signal is processed to extract the third signal to obtain an emulated micro-seismic event signal occurring at the mixing zone; and to characterize properties of the medium or creating a 3D image of the properties of the medium, or both, based on the emulated micro-seismic event signal.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-06NA25396
Assignee:
CHEVRON U.S.A. INC. (San Ramon, CA) LOS ALAMOS NATIONAL SECURITY LLC (Los Alamos, NM)
Patent Number(s):
9,223,039
Application Number:
13/292,948
OSTI ID:
1234213
Country of Publication:
United States
Language:
English

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Continuous wave phase detection for probing nonlinear elastic wave interactions in rocks journal February 1991