Fluvial-deltaic reservoirs contain large volumes of oil and gas. These reservoirsandstones may have complex stacking patterns, and shales or very fine grained sandstone may form baffles or barriers to flow. As a result, significant compartmentalization or baffling may occur in fluvial-deltaic reservoirs. Because of their close analogy with reservoirs in the Gulf of Mexico region, outcrops of Ferron Sandstone in central Utah have been used to investigate the heterogeneity and possible recovery behavior of high-accommodation fluvial-deltaic reservoirs.

This report describes the three-dimensional distribution of hydraulic conductivity in the Edwards aquifer from Kinney to Comal Counties, Texas. Quantitative and interpretive assessment of the three-dimensional distribution of permeability in the prolific, complex, and heterogeneous Edwards fractured karstic aquifer leads to improved understanding of the dynamic behavior of the aquifer and identifies areas where information is lacking.