We have developed a set of programs for analysis of surface and subsurface data that (1) organize the data to reduce its bulk without violating its integrity, (2) present 3-dimensional graphic representations of the data, and (3) use transport/reaction models to predict the evolution and spatial distribution of secondary porosity and cements. This evolution path and distribution arise through the interaction of flow, diffusion, dispersion, mineral dissolution, and cement precipitation.

These programs are applied to 2 types of reservoir rock: (1) a feldspathic arenite in which feldspar dissolves and calcite cement precipitates, and (2) a limestone undergoing dolomitization.

Knowledge of spatial distribution of porosity and cements derived from these models is valuable in choosing drill-hole sites.

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