The major oil-fields depletion level is increases every year and production levels maintaining becomes one of the main license holder objectives. Localization of zones with the highest concentration of non-mobile stocks, which are confined to highly heterogeneous reservoirs, is the main means of oil production levels maintaining at the final development stage. Qualitative and reliable identification of promising areas and their subsequent active involving into oilfield development will justify the further field operations profitability and also will allow avoiding the oil production losses, which are connected with inefficient geological and technical operations planning.
Currently three-dimensional hydrodynamic models are the main tool for making operational decision on development control. Such models require a significant amount of time and high engineer qualifications, especially when modeling large objects with a long development history.
Geological and technical operations planning should be implemented by the new high-tech approaches involvement, including analytical techniques, which shows high efficiency on the long-developed fields. Analytical techniques also allow determining the actual initial recoverable oil reserves, to establish the reasons for their difference from the officially approved ones and to reveal the possibility of their significant increase.
Software techniques implementation, which is represented in article, allowed carrying out an oil-field current state development operational analysis on the final development stage. As a result the waterflooding coefficient and coverage ratio coefficient grids were plotted and oil recovery coefficient map was proposed. All results were used in the oilfield development documentation of Surgutneftegas OJSC.
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