Yu.L. Egorova, G.V. Aleksandrov, R.Kh. Nizaev
DOI: https://doi.org/10.25689/NP.2022.4.140-155
Abstract
The paper considers analytical dependencies to determine the radius of the steam chamber that is formed in the oil zone following injection of heat carrier into in a high-viscosity reservoir with underlying contact water zone. Analysis of the analytical dependencies showed that the radius of the steam chamber in the oil zone resulting from injection of hot water into the underlying contact water zone below the WOC is 1.24 times the radius of the steam chamber resulting from hot water injection directly into the oil zone. It was found that when steam is used as a heat carrier, the steam chambers’ sizes are comparable regardless of whether the steam is injected directly into the oil zone, or into the underlying contact water zone. It was further found that the ratio of the steam chamber radius resulting from the steam injection to that resulting from the hot water injection varies from 9.9 to 13.4 depending on the injection zone. In case the heat carrier is injected into the oil zone, the steam chamber growth is only determined by the duration of injection, i.e. the stem chamber radius is increased with time. In case hot water is injected both in the oil zone and into the underlying contact water zone, the steam chamber is 1.1 times the steam chamber developed from injection of hot water in the oil zone alone. In case hot water is injected both in the oil zone and into the underlying contact water zone, the steam chamber is 3.5 times the steam chamber developed from injection of hot water in the underlying contact water zone alone.
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Authors
Yu.L. Yegorova, Senior Lecturer of Reservoir Engineering Faculty, Almetyevsk Oil State Institute
2, Lenin st., Almetyevsk, 423450, Russian Federation
E-mail: ulaegor@rambler.ru
G.V. Aleksandrov, Junior Research Engineer, Geologic and Reservoir Modeling Laboratory, Reservoir Engineering Department, TatNIPIneft–PJSC TATNEFT
32, Musa Jalil st., Bugulma, 423236, Russian Federation
E-mail: razrcmg@tatnipi.ru
R.Kh. Nizaev, Dr.Sc., Professor of Reservoir Engineering at Almetyevsk Oil State Institute, Leading Research Associate of Geologic and Reservoir Modeling Laboratory, Reservoir Engineering Department, TatNIPIneft–PJSC TATNEFT
32, Musa Jalil st., Bugulma, 423236, Russian Federation
E-mail: nizaev@tatnipi.ru
For citation:
Yu.L. Egorova, G.V. Aleksandrov, R.Kh. Nizaev Analiticheskie zavisimosti dlja opredelenija raspredelenija temperaturnogo polja, obrazujushhegosja pri zakachke gorjachej vody i para v plast s nizhelezhashhej kontaktnoj vodonosnoj zonoj [Analytic dependencies used to determine temperature profile resulting from injection of hot water and steam into reservoirs with underlying contact water zone]. Neftyanaya Provintsiya, No. 4(32), 2022. pp. 140-155. DOI https://doi.org/10.25689/NP.2022.4.140-155. EDN EHBGWJ (in Russian)