THE USE OF SEISMIC ATTRIBUTES FOR A GEOSTATISTICAL BASED INTEGRATED RESERVOIR DESCRIPTION AND UNCERTAINTY ASSESSMENT
MIKE BAHORICH, LYNN PEYTON, ANTHONY A. VASSILIOU, RICHARD L. CHAMBERS, GREG A. PARTYKA, J. MICHAEL ROSS, 1996. "THE USE OF SEISMIC ATTRIBUTES FOR A GEOSTATISTICAL BASED INTEGRATED RESERVOIR DESCRIPTION AND UNCERTAINTY ASSESSMENT", Stratigraphic Analysis Utilizing Advanced Geophysical, Wireline and Borehole Technology for Petroleum Exploration and Production, Jory A. Pacht, Robert E. Sheriff, Bob F. Perkins
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Amoco’s Mid-Continent Business Unit acquired a 3-D seismic data set to aid in the delineation of a Morrowan age channel sand whose thickness can be below seismic resolution. There were twenty-two existing wells prior to seismic data acquisition. Attempts to correlate sand-thickness with traditional seismic attributes were unsuccessful; however, a peak-to-trough time difference attribute has a very high correlation coefficient (p = 0.94) with sand-thickness. On the basis of this correlation, geostatistical methods were used to quantitatively integrate the two data types and assess uncertainty in the results. Post processing of thirty geostatistical conditional simulations created risk and iso-probability maps for sand-thickness. These results predicted a 75% chance (probability) of encountering 80 ft of sand at a proposed well location; subsequent drilling confirmed 78 ft of sand.