PAUL A. JOHNSON,JAMES A. TEN CATE,CUNG KHAC VU,KURT T. NIHEI,PIERRE-YVES LE BAS,ROBERT A. GUYER,CARENE S. LARMAT
申请号：
MX2013005146
公开号：
MX2013005146A
申请日:
2011.11.09
申请国别(地区):
MX
年份:
2013
代理人:
摘要：
A method and system for generating a micro-seismic event in a medium from a non-linear interaction to characterize the medium is provided. The method includes generating, by a first acoustic source, a first coded acoustic signal comprising a first plurality of pulses arranged as a time sequence, each pulse comprising a modulated signal at a central frequency； and generating, by a second acoustic source, a second coded acoustic signal comprising a second plurality of pulses arranged as a time sequence, wherein each pulse comprises a modulated signal and a central frequency of the modulated signal within each pulse in the second plurality of pulses is a selected fraction d of the central frequency of the modulated signal for the corresponding pulse in the first plurality of pulses. The method further includes receiving, by a receiver, a detected signal including a third signal being generated by a non-linear mixing process from the first acoustic signal and the second acoustic signal in the mixing zone； performing, by a processor, data processing on the received signal, or correlating with a coded signal template, or both, to extract the third signal generated by the non-linear mixing process over noise or over signals generated by a linear interaction process, or both, to obtain an emulated micro-seismic event signal occurring at the mixing zone； and characterizing 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.Se proporciona un método y un sistema para generar un evento microsísmico en un medio de una interacción no lineal para caracterizar el medio. El método incluye generar, por una primera fuente acústica, una primera señal acústica codificada que comprende una primera pluralidad de pulsos dispuestos como una secuencia de tiempo, cada pulso comprende una señal modulada en una frecuencia central, y generar, por una segunda fuente acústica, una segunda señal acústica codific
