by Xueying Lu and Mohammad Lotfollahi

CO₂ sequestration in subsurface often suffers from poor volumetric sweep efficiency due to low gas viscosity, low gas density, and formation heterogeneity. This study investigates CO₂ mobility control techniques of Water Alternating Gas (WAG) and Surfactant (or Nanoparticle) Alternating Gas (SAG) to increase CO₂ storage capacity in Cranfield via field-scale simulations and optimization. Continue reading →

by Benjamin Ganis

The enhanced velocity (EV) method is a useful way to directly construct a strongly flux-continuous velocity approximation between non-matching subdomain grids [2].  It is a straightforward method to implement based on a two-point flux approximation on Cartesian grids.  The EV method has recently been implemented in the IPARS simulator on a new type of discretization called semi-structured grids.  This enables powerful local mesh refinement capabilities, as well as dynamic adaptive mesh refinement (AMR). Continue reading →