Abstract
Residual oil zones (ROZs) are naturally waterflooded, traditionally noneconomic reservoirs in which potentially large amounts of CO2 could be stored in association with enhanced oil recovery. To date, ROZ exploration throughout the United States has primarily consisted of manual matching of hydrodynamics with structural data in preconceived, specific locations, assessing well- or field-scale analyses, followed by field tests. To locate potential ROZs more quickly en masse, Schlumberger Petrel software was used to build a 3-D geocellular model of the Williston Basin, and Schlumberger PetroMod was used to populate petrophysical properties and simulate hydrocarbon generation, migration, and accumulation.
Published Version
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