Vahid Azari - Chemical and Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran
Mohammad Fathinasab - Chemical and Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran
Mohsen Masihi - Chemical and Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran

Existence of fractures can impose some complexities to understanding the mechanisms of oil recovery and subsequently to reservoir simulation. There are some new mechanisms active in fractured reservoirs that doesn’t exist in conventional ones. In this work we investigate the effect of different parameters on oil recovery by simulating a typical fractured reservoir in Eclipse software package. It is seen that very high production rates or small matrix blocks can drastically fall the Ultimate Recovery Factor (URF). Also in these cases transition period terminates faster and the reservoir mainly produces at pseudo-steady-state condition. Block-to-block interaction (Re-infiltration) is another threat for oil recovery which is shown that it would have more dominant effect in some moderate oil production rates.

Fractured Reservoir, Reservoir Simulation, Ultimate Recovery Factor, Production Mechanisms, Eclipse Sofware