METHOD OF STACKING SEISMIC TRACES

摘要

A method of stacking seismic traces including the steps of: deriving a representation of the noise component of each of the seismic traces; deriving an indication of the correlation between the noise components from the representations of the noise components; and producing a stacked seismic trace by combining the seismic traces in proportions derived from the correlation indications. The method can be used to produce stacked seismic traces having improved signal-to-noise ratios compared to conventionally stacked seismic traces. The preferred embodiment of this method is sometimes referred to as "covariant" stacking, because the weighting factors derived depend on the covariance of the noise components of their constituent traces.