论文标题
CFD-DEM的粗粒胶片以模拟修饰的内聚触点模型中的沙子产生
Coarse-graining of CFD-DEM for simulation of sand production in the modified cohesive contact model
论文作者
论文摘要
对于未固结的储层中的许多碳氢化合物回收应用来说，沙子生产是一个重要的问题。使用与离散元素方法（CFD-DEM）结合的计算流体动力学的模型可以捕获沙子传输问题的微尺度特征。在这项研究中，使用基于哈萨克斯坦储层场的粒度分布（PSD）的样品开发了3D CFD-DEM模型的粗粒方法。严格地呈现了从罚款到粗模型的缩放量表的推导。原始的（精细）模型已被验证为实验室结果，包括沙子生产率。将原始模型的结果与SSW和SSP粗制模型进行了比较。 SSW模型结果与原始系统的沙子生产率相符。我们还观察到流体速度流线以及原始模型和粗模型之间产生的颗粒分布的良好匹配。在平行的粗粒模型中，粗模型的加速度高达9.4。
Sand production is an important issue for many hydrocarbon recovery applications in unconsolidated reservoirs. The model using the Computational Fluid Dynamics coupled with Discrete Element Method (CFD-DEM) can capture micro-scale features of sand transport problems. In this study, a coarse-graining approach of 3D CFD-DEM model is developed for the sand production phenomenon using the sample based on the particle size distribution (PSD) from the Kazakhstan reservoir field. The derivation of scaling from a fine to a coarse model is presented rigorously. The original (fine scale) model is validated to the laboratory results including the sand production rate. The results of the original model is compared to the SSW and SSP coarse-gained models. The SSW model results agrees with the result of the sand production rate for the original system. We also observe a good match of the fluid velocity streamline and the produced particle distribution between the original and the coarse models. The speedup of the coarse model is up to 9.4 in the parallelized coarse-grained model.
