Comparison of Water Flooding, Gas Injection and WAG Injection Scenarios Performance in a Five Spot Pattern

Enhancing the recovery of an oil reservoir is one of the major roles of any oil company. This is achieved by development of the oilfields by employing different techniques such as infill drilling, water injection, gas injection, water alternate gas (WAG) injection and even thermal methods. In this work a simulation study was performed on five spot pattern reservoir models to determine the optimal production strategy.Water Flooding, Gas injection and Water Alternate Gas injection Scenarios were compared for an Iranian oil reservoir. Results indicated that water injection yields better recoveries than gas or WAG injections. Moreoverthe effect of different parameters such as Grid Size, Perforation interval and Grid orientation were considered in this investigation.