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.

中文翻译：

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确定树脂涂层对最佳水力压裂应用陶瓷支撑剂沉降的影响

摘要 树脂包覆陶瓷颗粒是一种在水力压裂作业中进行试验的新型支撑剂，本研究研究了树脂包覆陶瓷颗粒在水中的阻力系数。在测试中选择了直径在 450 到 924 μm 之间的八种树脂涂层陶瓷颗粒。使用从计算机断层扫描 (CT) 扫描获得的高分辨率图像，我们测量构成每个颗粒的三种成分（树脂涂层、陶瓷体和气穴）的体积、平均直径和体积分数。与其他方法相比，CT 扫描方法导致估计密度与理想粒子密度之间的差异最小。我们测量树脂涂层陶瓷颗粒在水中的沉降速度以确定阻力系数，发现 Roos 和 Willmarth'