Particulate Straining in Simple Porous Media

A number of glass bead packs have been sintered to slightly consolidate them and create artificial rock samples with high porosity (~42%) and uniform grain size (~1 mm). One of the samples was imaged with x-ray microtomography, and the others were flooded with different suspensions. Core flooding has been done for different flow rates, concentrations and bimodal particle sizes and each sample and CT images were taken before and after each suspension flood.

将多组玻璃珠装填体进行轻度烧结以实现固结，制备得到孔隙率约42%、粒径均匀（约1 mm）的人造岩心样品。其中1件样品采用X射线显微CT（X-ray microtomography）进行成像表征，其余样品则分别使用不同悬浮液开展岩心驱替实验。本实验针对不同流速、悬浮液浓度及双峰粒径参数开展多组岩心驱替作业，且在每次悬浮液驱替操作前后，均对各测试样品进行成像并采集CT图像。