The implementation of Water Alternating (WAG) injection to obtain optimum recovery in Cornea Field, Australia

Abstract The Water Alternating Gas (WAG) process is a cyclic of injecting alternating water followed by gas. main purpose WAG injection to improve both macroscopic and microscopic sweep efficiency, maintaining nearly initial high pressure, slow down the gas breakthrough reduced oil viscosity. also decreases residual saturation resulted from flow three phases effects associated with relative permeability hysteresis. study area in Cornea Field located Browse Basin, Western Australia. This conducted because there no investigation on feasibility this field. In study, two-phase bounding imbibition drainage model (Stone 1 Stone 2) along hysteresis (Land, Carlson or Killough) were used. From result, correlation shows more was recovered. Therefore, it feasible be used compared other models. sensitivity analysis, that highest recovered at ratio 1:1. Since miscible reservoir, 1:1 efficient insensitive trapping. Also, production increased shortest cycle time 180 days due minimum miscibility pressure reached. addition, best inject as first phase injected into reservoir CO $$_{2}$$ 2 has mobility while can result early reservoir.