A three-dimensional CFD-DEM simulation method was developed to investigate the influence of different reservoir fluids on sand production. The fluid properties and reservoirs were prescribed and modelled after the conditions in the Kenkiyak and Uzen oil fields in Kazakhstan. A cylindrical sandstone sample was modelled using the Discrete Element Method in three stages of the pluviation, diagenesis, and perforation processes as in the oil field. A coupled simulation with the Computational Fluid Dynamics was used to simulate the sand production from the perforated sandstone under different fluid flow conditions with light and heavy oils. A continuous sand production was found to be more severe with the heavy oil flow due to its higher transport capability and a microstructural sanding mechanism that mobilized a higher proportion of the sample's particles with the fluid outflow. Sand production for light oil occurred in two stages of a first transient sand production that was followed by a second continuous sand production. The transient sand production was associated with more significant bond breakage, particle movement and porosity change within the damage zone that was created by the central perforation inside the sandstone sample.

开发了三维 CFD-DEM 模拟方法来研究不同储层流体对出砂的影响。流体特性和储层是根据哈萨克斯坦 Kenkiyak 和 Uzen 油田的条件规定和模拟的。一个圆柱形砂岩样品使用离散元方法在油田中的雨洪作用、成岩作用和射孔过程的三个阶段进行建模。与计算流体动力学的耦合模拟用于模拟穿孔砂岩在不同流体流动条件下使用轻质油和重质油的出砂。由于稠油具有更高的输送能力和微结构出砂机制，随着流体流出，样品颗粒的比例更高，因此发现连续出砂对稠油流动更为严重。轻质油的出砂分两个阶段进行，第一次是短暂的出砂，然后是第二次连续的出砂。瞬态出砂与砂岩样品内部中心射孔造成的损伤区内更显着的粘结断裂、颗粒运动和孔隙度变化有关。