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  Residual Statics  

Geo-X has multiple options to determine residual static solutions, each having its pros and cons. These are routinely tested in the processing flow to determine which solution produces the best results. The choice of algorithm is often dependent on the data itself. The options are from two sources; Promax and MASTT.

Promax ‘Max Power’ is a proven classical residual statics resolving module available on the ProMax/SeisSpace platform. It provides stable robust statics solutions in stratigraphic data. As well, in highly structural data, Max Power, allows the option of multiple discrete data windows that are horizon guided for greater accuracy. Flexible number of iterations and convergence steps are possible for optimal performance and computing time

MASTT is a powerful surface consistent statics package for 2D and 3D land or shallow marine seismic data sets. MASTT has been used worldwide since 1982 to solve complex problems involving large residual statics.

MASTT is simple to use. It is a batch process which requires no input other than the unstacked data with conventional geometry headers attached. There is a proprietary, semi-intelligent picking algorithm which derives time picks for each trace input. This algorithm has different sub-algorithms which are optimized for different qualities of data.

The MASTT solution uses a median value criterion to obtain statics from these picks, rather than the more common least squared error solution.

The output is a set of shot statics which are applied to the data, receiver statics which are applied to the data, CDP structure terms which are not applied, and residual NMO terms which are not applied to the data.