This article describes a systematic approach used to improve efficiency of water shutoff treatments application in JSC Rosneft. The description of the main stages of this approach as well as n tools and techniques used in it is given.The approach proposed consists of three main stages. The first stage -the creation of a rating of waterflooding patterns which require application of water shutoff treatments, the second stage -the selection of optimal technologies for a given reservoir properties, which includes an analysis of previous studies, tracer studies, laboratory testing and modeling of the effects of treatments, third stage -monitoring of the operations and probabilistic estimation of incremental oil recovery.

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