Accurate Reactive Transport Modeling in Heterogeneous Reservoirs with the Dual Mesh Method

Abstract

This paper recall the Compositional Dual Mesh Method, an extension to the concept of dual mesh for reactive transport modeling. This approach involves two meshes, a low-resolution mesh to resolve the pressure equation and a high-resolution mesh to transport the species and to calculate the geochemical equilibrium. Geochemical equilibrium being very sensitive to the concentration, preserving the fine heterogeneities leads to a more accurate field behavior simulation than conventional approach which consist in performing simulations on a coarser mesh. The method is applied to a simulation of CO2 storage in a geological model representing a fluvial deposit with a complex realistic architecture that keep a high resolution of the heterogeneities.

Reactive Transport Modeling For CO2 Sequestration With A Dual Mesh Method

“…The second application is done on a fluvial sedimentary heterogeneous model (Bruyelle et al 2017). The geometry of the heterogeneous geological model is similar based on to the Minjur Sandstone (Saudi Arabia) and was built by Issautier et al (2013; to evaluate the role of compartmentalization of heterogeneous reservoir on CO2 storage capacity estimate.…”

“…Fifth CO 2 Geological Storage Workshop 21-23 November 2018, Utrecht, The Netherlands Figure 3 Comparison of CT breakthrough curves for production well (Bruyelle et al 2017).…”