This report combines borehole core and geophysical log study with porosity and permeability data to define patterns of facies and permeability distribution in a typical upper Clear Fork reservoir in the Permian Basin.

In this study, 28 cores were used to define the depositional facies, cyclicity, and sequence stratigraphy of a typical upper Guadalupian carbonate platform reservoir in the Permian Basin.

This report presents a statistical analysis of outcrop-permeability data for quantifying spatial patterns of petrophysical heterogeneity in carbonates that are difficult or impossible to observe in the subsurface.

Electrical images in boreholes are becoming increasingly important in interpreting the rock record.

Shallow-water-platform carbonate reservoirs of Permian age have accounted for more than half of the oil production in the Permian Basin, one of the largest oil-producing regions in the United States.

This study offers a high-frequency sequence stratigraphic model of carbonate-ramp strata of the San Andres Formation.

Formation evaluation in heterogeneous carbonate reservoirs is complicated by the presence of multiple pore types. Acoustic properties, Archie cementation exponents, and permeability transforms differ according to pore type.

A waterflood was begun in 1985 in Taylor-Link West San Andres unit (10 million barrels cumulative production) on the south margin of the Central Basin Platform to capture a remaining mobile oil target estimated at 20 million barrels.

Petroleum reservoirs typically yield only a fraction of the oil initially in place because geologic heterogeneity causes incomplete drainage of oil.