Application of High Resolution Simulation to Modelling Fluid Instabilities

This paper describes the accurate numerical methods used to solve equations describing two-phase three-component flow on a fine grid to obtain predictions of fingering behaviour for<br>both miscible and immiscible flows. The reasons for the choice of finite difference scheme are discussed, and the use of a total velocity formulation to increase speed with negligible<br>loss of accuracy is described. Results are presented for illustrative line-drive and quarter five-spot configurations, including a tertiary recovery example which shows stabilisation<br>of fingering when water and solvent are injected simultaneously at the optimum WAG ratio.