Source-independent full waveform inversion of seismic data

Lee, Ki Ha

Source-independent full waveform inversion of seismic data

Patent · Tue Feb 14 04:00:00 EST 2006

OSTI ID:1175651

Lee, Ki Ha

A set of seismic trace data is collected in an input data set that is first Fourier transformed in its entirety into the frequency domain. A normalized wavefield is obtained for each trace of the input data set in the frequency domain. Normalization is done with respect to the frequency response of a reference trace selected from the set of seismic trace data. The normalized wavefield is source independent, complex, and dimensionless. The normalized wavefield is shown to be uniquely defined as the normalized impulse response, provided that a certain condition is met for the source. This property allows construction of the inversion algorithm disclosed herein, without any source or source coupling information. The algorithm minimizes the error between data normalized wavefield and the model normalized wavefield. The methodology is applicable to any 3-D seismic problem, and damping may be easily included in the process.

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Research Organization:: The Regents of the University of California, Oakland, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC03-76SF00098

Assignee:: The Regents of the University of California (Oakland, CA)

Patent Number(s):: 6,999,880

Application Number:: 10/799,131

OSTI ID:: 1175651

Country of Publication:: United States

Language:: English

References (21)

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