UDC

622.276(045)+556.3(045)

Authors

Dorfman Mikhail Borisovich
Institute of Oil and Gas, Northern (Arctic) Federal University named after M.V. Lomonosov (Arkhangelsk, Russia)
e-mail: Michael.B.Dorfman@plc-oil.ru
Khinchuk Konstantin Evgen’evich
Gazprom Neft Middle East B.V. (Saint Petersburg, Russia)
e-mail: kkhinchuk@gmail.com

Abstract

This article describes the different approaches to oil production forecasting in the East-Kolvinskiy oilfield at the start of produced water disposal process as well as the change of an oil recovery index. The East-Kolvinskiy oilfield is a good example of a carbonate oilfield with the complex void system and active aquifer. The tested formation D3fm is represented by the thick carbonate member. The authors took into account the geological and flow properties of the aquifer, as well as the data on the history of oilfield development of analogues (Ardalinsk and Dyusushevsk oilfields). The results of definition and simulation provided by the “Petrel” and “Eclipse” software systems were used, and the extrapolation method of oil-water ratio analysis results was considered. The real changing of the aquifer operation at the start of water disposal process in a zone of oil-water contact is analyzed. The data of the paper can facilitate a solution to the problems at the start of water disposal process in the fracturing of the carbonate reservoirs with a large aquifer area, as well as the problems solving of the changing in predicted oil production and formation pressure distribution of an oilfield. The above methods allow taking into account the change in the oil-water ratio and, consequently, change in production profiles and reserve recovery profitability in the application of various means of produced water disposal process. Analysis of stratum water disposal into the reservoir as an accelerator of crude-oil production will improve the planning quality in the fields of oil production.

Keywords

field development, aquifer, crude-oil production, oil-water ratio, hydrodynamic simulation

References

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