Fractured reservoirs consist about 60% of the world's proven oil reserves and 40% of the world's gas reserves . It is logically to suggest future interest increasing of production because most of highest classic clastic reservoirs are discovered and developed for many years. One of the prospective areas is basement of Western Siberia in Russia that have negligible amount of investigations. Fractured reservoirs have complex lithology and composition comparing with clastic reservoirs. Understanding of fracture characteristics is necessary for oil and gas companies that spent huge amount of money with little effect. Many decisions lead to non-effective drilling and development strategies according to low level of knowledge about fractured reservoirs. It is important to understand nature of fractured reservoir system, understand how fluid filtration is happened, what ways it used and what the main influence parameters on fluid flow. Modelling of fractures reservoirs is useful tool for prediction behaviour of reservoir despite on many uncertainties during modelling. Reducing uncertainties and finding keys for knowing how modelling it is more fully leads to achieve optimum recovery and maximum profit for oil companies.