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Abstract
Resin-coated ceramic particles are a new type of proppants being tested in hydraulic fracturing operations, and this study investigates the drag coefficients of resin-coated ceramic particles in water. Eight resin-coated ceramic particles with diameters between 450 and 924 μm are selected in the tests. Using the high-resolution images obtained from a computer tomography (CT) scan, we measure the bulk volume, mean diameter, and volumetric fractions of three constituents making up each particle (resin coating, ceramic body, and air pockets). Compared to other methods, CT scan method leads to the minimum discrepancy between the estimated densities and the ideal particle densities. We measure the settling velocity of resin-coated ceramic particles in water in order to determine the drag coefficients, finding that the Roos and Willmarth's correlation (1971) is more appropriate for calculating the drag coefficients of resin-coated ceramic particles than the other four correlations.
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