Currently, many fields in Russia are at the final development stage known not only for a decreasing percentage of active recoverable reserves, but also for a growing share of hard-to-recover reserves, confined, for example, to complex reservoirs featuring primarily highly zonal and layered heterogeneity. In this context, the priority issue is to spot areas containing remaining reserves with a view to subsequently recovering them. Obviously, this issue cannot be tackled without the aid of advanced technologies of crosswell formation evaluation.

This publication presents the remaining reserves detection technology involving integrated multi-well diagnostics and reservoir flow model (RFM) [1] calibration techniques focused on refining development targets and shaping an appropriate RFM to come up with an action plan to tap reserves and ramp up production at the Company's current assets.

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