D.L. Dobrovinskiy, M.N. Vilkov
Most of the fields in Western Siberia are at the latest stage of development, which is characterized by high water-oil ratio (WOR) and water cut of the produced products. In this connection, the current exploitation conditions of the well stock make it necessary to adjust the criteria for applying workovers program aimed at maintaining the level of oil production. Therefore, about 40 % of hydraulic fracturing operations are performed in the zone of the injected water front at a base level of water cut in candidate-wells of more than 90 %, which contradicts generally accepted selection standards. However, it should be noted that the existing fracturing technologies and the accompanying preliminary workover operations allow performing cost-effective work package in these conditions. The aim of the work is to increase the efficiency of classical single–stage fracturing in deviated oil wells in conditions of proximity to the front of the injected water by the method of multi-stage injection of proppant into one target perforation interval. The paper presents the results of comparing the efficiency of multistage and standard fracturing, determines the criteria for obtaining a higher increase in oil production with a decrease in the level of water cut after fracture.
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D.L. Dobrovinskiy, Lead Engineer of the oil production Intensification planning Department, Branch of LLC «LUKOIL-Engineering» «KogalymNIPIneft » in Tyumen
80, h 2, Deputatskaya st., Tyumen, 625007, Russian Federation
M.N. Vilkov, Head of Department of the oil production Intensification planning, Branch of LLC «LUKOIL-Engineering» «KogalymNIPIneft» in Tyumen
17, Linnaya st., Tyumen, 625046, Russian Federation
D.L. Dobrovinskiy, M.N. Vilkov Povyshenie jeffektivnosti gidrorazryva plasta v naklonno-napravlennoj skvazhine metodom mnogostadijnoj zakachki proppanta v uslovijah blizosti fronta nagnetanija [Improving the efficiency of hydraulic fracturing in a deviated well by the multi-stage injection of proppant in conditions of proximity of the injection water front]. Neftyanaya Provintsiya, No. 4(32), 2022. pp. 223-238. DOI https://doi.org/10.25689/NP.2022.4.223-238. EDN DXYBFQ (in Russian)