00585naa#a2200181#i#450# EN\\bibl\110482 20260204185541.3 2949-2440 20251217b2025####ek#y0engy0150####ca RU The problem of high viscosity oil production in heterogeneous reservoirs Journal article Astrakhan Astrakhan State Technical University 2025 8 с. Journal article local Горное дело. 622 Abutalieva Ilmira Rastyamovna Subbotina Elena Sergeevna vestnik.astu.ru