Patent ID: 8073625
Filing Date: 2011-12-06
Classification: G01V

Abstract:
1. A method for combining at least two seismic data sets into a single desired data set to generate a subsurface image, comprising: (a) selecting a corresponding of measured data element from each of the at least two seismic data sets, wherein each seismic data sets comprises a plurality of measured data elements; (b) for each selected measured data element, determining a complex-valued model filter which, if applied to a single corresponding data element from the desired data set, would produce an output which, when added to a noise signal that may be different for each measured data element, equals the selected measured data element, wherein a covariance matrix R characterizes the noise signals for the selected measured data elements including any dependence between the noise signals in different selected measured data elements, and wherein a vector M has as its components the model filters for the selected measured data elements; (c) estimating the desired data element by using a computer to apply a complex-valued filter vector G=(M (d) repeating (a)-(c) for a plurality of different corresponding measured data elements; and (e) using the estimated desired data elements of the single desired data set to generate a subsurface image.