Keyvan Dailami - Young Researches Club, Omidieh Branch, Islamic Azad University, Omidieh, Iran
Hamid Reza Nasriani - Young Researches Club, Omidieh Branch, Islamic Azad University, Omidieh, Iran
Seyed Adib Sajjadi - Young Researches Club, Omidieh Branch, Islamic Azad University, Omidieh, Iran
Mohammad Sinaei - Young Researches Club, Omidieh Branch, Islamic Azad University, Omidieh, Iran

Although nowadays finite difference simulators have many advantages for reservoir engineers to predict reservoirs in 3 dimensions, they have some disadvantages; such as spending much run time for complex fields with several thousand grids which by using Streamline simulation, the run timewas decreased a lot. In this paper, first a brief summary of streamline simulation and its uniqueness applications were discussed and then an Iranian oil reservoir as a case study was simulated by using FrontSim streamline simulator, then besides testing the results of Sayyafzadehet al (2010) to find the location of infill wells, the most suitable locations for infill drilling wereselected, after that, vertical infill wells were investigated, and overally 3 scenarios were tested byconverting 3 producers to injectors and defining two well patterns. finally the results of simulation and testing infill drilling scenario shows significant increasing in field oil production and field oil recovery factor, approximately 14.5%, and also reduction field water cut. In addition, distinguishing fractures or faults, well's drainage area and understanding that how much injectorsaffect the field oil production are other benefits of Streamline simulation method

Optimization, Simulation, Streamline, Infill Drilling, Well Pattern, vertical well