Location: Russia Well type: Horizontal producer Reference: SPE-191560 Case benefits — Located and identified the fracture as the water source — Enabled the operator to make informed decisions about workover requirements Challenge Multistage fracturing is an effective stimulation technique for heterogeneous, low-permeability oil reservoirs. However, after a fracturing campaign, there may be a risk of increased communication between the water-bearing formation, which may cause a high water cut in the stimulated well. In this case from the Volga-Ural region of Russia, the operator wanted to identify unexpected water sources in a horizontal well in a low-permeability carbonate reservoir. The well had been subjected to a multistage acid fracturing job and it was necessary t

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