Taking into consideration continuous reserve structure degradation, difficult extracted reserves annual increasing, it is necessary to examine more thoroughly the mechanics of formation fluids moving, especially after active development termination. One of the main tasks of modern oil and gas producing соmрlех is to work with discovered and developed oilfield with residual formation reserves, and to look for the new ways of their development. Studying this рrоblem, it was gathered an extensive amount of geologic field information of Byelorussian, Russian and other countries oilfields, that prove perceptiveness of abandoned flooded wells and fields retuning with their further secondary development. To prove the possibility of residual oil reserves redistribution in the formation, there were performed several tests with carbonate core samples in oil reservoir bedding structure with the help of sand packed tubes and filtration manifold in water-oil displacement, and also mathematic simulation method of water-oil saturation redistribution process.
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