What is the residual oil saturation for water flooding vs immiscible gas flooding? | Ask PERM

Amir Asks PERM: Hi there, If you flood two identical cores (let's say with poro=25%, perm=200 md) one with water and another one with immiscible gas (like associated gas), for which case do you expect a higher residual oil saturation? Thanks, Amir   Dr. Jonathan Bryan from PERM Answers: Hello, Let’s start by assuming that [...]