Region, Basin, and Play Level Dlscovery Characterization with the GASIS Database

HUGMAN, ROBERT H., PETER S. SPRINGER, and HARRY VIDAS

The goal of the U.S. Department of Energy's GASIS project is to develop a large-scale database of standardized reservoir property, geological, and ultimate recovery data for Lower-48 oil and gas reservoirs. The GASIS Reservoir Data System will contain over 180 data elemerds for approximately 20,000 reservoirs. While GASIS is similar in concept to the regional GRI/DOE Gas Atlas reservoir datasets, it contains a much wider range of information for each reservoir, data definitions and formats are consistent across the entire Lower-48 coverage, and a large amount of original data have been added. A multi-year reservoir study effort has resulted in the compilation of an extensive amount of consistent, high quality reservoir property data.

As an example of the application of GASIS for exploration decisionmaking, the database was used to develop a region, basin, and play level discovery analysis of the Rocky Mountain region. The analysis includes reservoir size distributions, discovery history, reservoir properties, geological relationships, and well recovery statistics. Reservoir and play level economics have also been evaluated by importing GASIS data into a discounted cash flow model.

AAPG Search and Discovery Article #91021©1997 AAPG Annual Convention, Dallas, Texas.