Fine-migration-induced permeability damage in geological reservoirs is a critical problem in several environmental and energy operations. This study presents a novel numerical model aimed at predicting the hydro-mechanical response of a saturated porous formation containing fines to injection-induced fluid flow. The proposed model contains two novel components: incorporation of spatiotemporal fluid flow in the porous formation, and integration of the coupled interactions between the poroelastic response of the saturated porous formation and fine mobilization, migration, and straining. The modified particle detachment model has been adopted, using the maximum retention function for a monolayer of size-distributed fines. The results from the proposed model reveal that incorporation of the fines migration, mobilization, and straining has a substantial impact on in situ pore pressures (~ 65% higher pore pressures were predicted at wellbore vicinity after 1 h injection when incorporating particle straining). The findings also depict a lower fine-migration-induced permeability damage when incorporating the poroelastic response of the porous layer to injection flow.

在一些环境和能源运营中，精细迁移引起的地质储层渗透率破坏是一个关键问题。这项研究提出了一种新颖的数值模型，旨在预测含有细粉的饱和多孔地层对注入诱导的流体流动的水力响应。所提出的模型包含两个新颖的组成部分：将时空流体结合到多孔地层中，以及将饱和多孔地层的孔隙弹性响应与精细动员，运移和应变之间的耦合相互作用进行整合。已经采用了改进的颗粒分离模型，对颗粒分布的细粉单层使用了最大保留功能。拟议模型的结果表明，罚款的迁移，动员，应变对原位孔隙压力有实质性的影响（在引入颗粒应变后，注入1 h后，在井眼附近预计孔隙压力会增加约65％）。这些发现还表明，当结合多孔层对注入流的孔隙弹性响应时，较低的精细迁移引起的渗透性破坏。