METHOD FOR SIGNAL-TO-NOISE RATIO ENHANCEMENT OF SEISMIC DATA USING AMPLITUDE NOISE ATTENUATION
摘要
<p>A method for enhancing signal-to-noise (S/N) ratio of seismic data is presented. An ensemble of input traces is decomposed into a plurality of frequency bands of traces. Trace and signal power and then a maximum allowable signal-to-noise ratio are estimated for each frequency band. Weights are calculated which are functions of the inverse noise power or rms. The amplitudes in each of the traces are reformed using a fitting function which utilizes the estimated weights to create true relative amplitude signal enhanced traces. The weighting function has data adaptive parameters which can be changed to accommodate noise characteristics such coherency, incoherency, Gaussian and non-Gaussian distributions, etc. The method may be applied across many different coordinate systems. The method may be applied iteratively to seismic data to shape the noise distribution of the seismic data.</p>
申请公布号
EP1625420(A1)
申请公布日期
2006.02.15
申请号
EP20040785564
申请日期
2004.05.14
申请人
CHEVRON U.S.A. INC.;HERKENHOFF, E. FREDERIC;BONES, DENNIS G.;LOUIE, KENDAL BONG HU
发明人
HERKENHOFF, E., FREDERIC;BONES, DENNIS, G.;LOUIE, KENDALL, BONG, HU