The article presents a computer technology for well group oil production optimization with reservoir and surface constraints. The technology is based on "reservoir – well – surface infrastructure" system integrated modeling, which covers the entire hydrocarbon field development management cycle. The integrated model includes a hierarchical filtration model describing a multiphase inflow to well group in fractured reservoir, an oil production optimization model with water and gas production restrictions, a surface field development model, a multiphase flow model in the well group gathering system and wellbore with its equipment restrictions. The integrated model is implemented as a production optimization calculation module in the RN-KIN software package. This module is a useful tool for well operation mode express-management. The calculation module intended for bottom-hole pressure and phase flow rates history matching and forecast, operation modes management with considering reservoir and surface interference and well operation modes optimization which best way consistent with reservoir and the surface system. The technology was tested at one of the largest Russian Federation oil and gas fields (fractured carbonate reservoir). An example of using the technology is presented for a well group: optimal flow rates and accumulated oil, water and gas production, and the well equipment parameters are calculated.
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