Several analyses have been published in the specialized literature on the use and performance of distinct prestack seismic attributes as direct hydrocarbon indicators (DHI). The main idea is to use combinations of those attributes, in particular the P and S impedances (IP and IS), to minimize the dry rock frame contribution, that cause the increase of the pore fluid discrimination capacity.

The Batzle proposal (2001) refers to the calculation of K-G (where K and G represent the bulk modulus and the shear modulus, respectively). Several publications of Goodway et al. since 1997 have systematically presented the...

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