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Abstract: Regional Reservoir Characterization Studies Comparing D Sand and J Sand Gas Fields throughout the Denver Julesberg Basin of Colorado and Nebraska

WILLIAMS, CRAIG M., WALTER J. HENDRICKSON, PAUL W. SMITH, RONALD J. WOODS

Regional reservoir characterization studies were conducted throughout the Denver-Julesberg Basin for the purpose of collecting a digital data base for various reservoir characteristics of reservoirs that have produced 5 BCF or greater. Within the Denver-Julesberg Basin, excluding the FERC Tight Sand Wattenberg Field, the D and J Sands are some of the more prolific and popular reservoirs because their depths and recoveries make them attractive targets for operators working this area.

On a field by field basis, reservoir characteristics such as minimum, average, and maximum depth, thickness, porosity, and water saturation were tabulated for the D and J Sands. These findings are compared and contrasted to demonstrate the differences between the D and J Sands and their productive capabilities. The data are also used to show the change in reservoir characteristics of each zone as it is encountered at varying depths in different parts of the Denver-Julesberg Basin.

AAPG Search and Discovery Article #90946©1997 AAPG Rocky Mountain Section Meeting, Denver, Colorado