Kazakhstan journal for oil & gas industryKazakhstan journal for oil & gas industry2707-42262957-806XKMG Engineering10867610.54859/kjogi108676Research ArticleAbout flooding of low-permeable formationsBersenevSergey F.Bersenev@ufntc.ruBadamshinaGuzel N.BapaninaGN@ufntc.ruhttps://orcid.org/0009-0005-5975-088XEvlampievYaroslav V.evlampievyav@ufntc.ruEmchenkoOlga V.emchenkoov@gmail.comMullagalinIlyas Z.mullagaliniz@ufntc.ruUfa Scientific and Technical CenterNGT-Information Technology15122023545230210202306122023Copyright © 2023, Bersenev S.F., Badamshina G.N., Evlampiev Y.V., Emchenko O.V., Mullagalin I.Z.2023<p>Due to the depletion of hydrocarbon reserves in traditional reservoirs with good filtration and reservoir properties, there is currently increasing interest in hard-to-recover reserves, and the main difficulty in developing such reservoirs is the efficiency of reservoir pressure maintenance systems. When developing low-permeability reservoirs, various mechanisms of oil displacement during flooding can be distinguished. For reservoirs with permeability less than 1 mD, there is no need to maintain high wellhead pressure; moreover, with a large accumulated compensation, stopping the maintenance of reservoir pressure for up to six months does not lead to a drop in production, which creates the prerequisites for organizing cyclic flooding. This will solve a number of problems that arise while maintaining reservoir pressure when working in such conditions.</p> <p>The facies structure of reservoirs sometimes has a decisive influence on the performance of wells and their interinfluence. The transition to the development of fields with a complex geological structure, low filtration characteristics of the formation, the existence of geological bodies with different properties requires not only careful formation of a conceptual understanding of the field, but also the creation of detailed facies digital maps taking into account the existence of zones with different sedimentation, which, as a consequence, creates zones with different filtration and capacitance properties, requiring different approaches to development.</p>Achimov sequencefloodingcyclic injectionfaciesoil displacement mechanismscompensationачимов қалыңдығысулануциклдік айдауфациямұнайды ығыстыру механизмдеріөтемақыачимовская толщазаводнениециклическая закачкафациямеханизмы вытеснения нефтикомпенсация1.Lapitskii DR, Fattakhova KV, Khidiyatov MM. A system for filling inter-well intervals by application of a Markov process to simulation of sedimentation. Sbornik «Trudy VI Baltiyskoy nauchno-prakticheskoy konferentsii «BalticPetroModel-2022. Petrofizicheskoye modelirovaniye osadochnykh porod». Tver: PolyPress; 2022. P. 33–35. (In Russ).2.Salimgareyeva EM, Emchenko OV, Mullagalin IZ, et al. Vyyavleniye mekhanizmov raboty sistemy PPD dlya nizkopronitsaemogo kollektora na baze kompleksnogo analiza dannykh razrabotki, GDI i litologo-fatsial'nogo analiza. Sbornik trudov X Mezhdunarodnoy nauchno-prakticheskoy konferentsii «GeoKaliningrad-2021. Neftegazovaya, rudnaya geologiya i geofizika». Tver: PolyPRESS; 2021. P. 107–111. (In Russ).3.Shvidler MI. Statisticheskaya gidrodinamika poristykh sred. Moscow: Nedra; 1985. 288 p. (In Russ).4.Kassanov MM, Bulgakova GT. Nelineynye i neravnovesnye effekty v reologicheski slozhnykh sredakh. Moscow-Izhevsk: IKI; 2003. 288 p. (In Russ).