Abstract
Abstract Laboratory evaluation of waterflood behavior of vugular carbonates is subject to significant uncertainty. Even basic parameters such as residual oil saturation are difficult to estimate and depend on experimental conditions. We use X-ray Computed Tomography (CT) scanning to characterize the porosity, permeability, and waterflood displacement behavior in rocks from two carbonate settings. We find that the porosity and permeability distribution are dissimilar. This causes the dependence of their residual oil saturation on water flow rate to be very different. We attempt conventional methods to extract meaningful information from the data but find them inadequate.
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