Neftyanaya Provintsiya
electronic peer-reviewed scholarly publication
Neftyanaya provintsiya No. 2(34), 2023

Assessment of technological efficiency of cyclic directed hydrochloric acid treatment by displacement characteristics (by the example of the kizelovksy horizon of the Bavlinsky field)

V.E. Alekseev, R.Kh. Nizaev


The paper presents the analysis of targeted cyclic hydrochloric treatment application in producing wells on Kizelovskian horizon of Bavlinskoe field. Process efficiency of reviewed targeted cyclic hydrochloric acid treatment technology is determined using decline curve analysis methods by Kambarov G.S., Kazakov A.A., Pirverdyan A.M. and Sazonov B.F. based on forecasting of basic operation conditions of producing wells with Pearson’s correlation analysis on constructed dependencies (production decline curves) 12, 9, 6 and 3 months prior to targeted cyclic hydrochloric acid treatment of wells. Efficiency analysis of targeted cyclic hydrochloric treatment of producing wells on Kizelovskian horizon of Bavlinskoye field shows that implementation of this technology results in oil production increase. Based on performed evaluation this technology is recommended for further use. Incremental oil production using this technology is 16.4 thousand tons, specific incremental oil production in general is 297.4 tons per well. The highest specific oil production was observed in 2016 reaching as high as 384 tons per well.

Key words:

targeted cyclic hydrochloric acid treatment, production decline curves, incremental oil production, Kizelovskian horizon, production enhancement operations, bottom hole treatment


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2. STO TN 337-2018. Instructions for Cyclic Directional Salt-Acid Treatment of Carbonate Beds., Bugulma. – 2018. (in Russian)

3. Savelev V.A. Geologo-promyslovye metody prognoza nefteotdachi [Field-geologic oil recovery evaluation methods]. Izhevsk: Udmurt University Publ. 2008 – 147 p. (in Russian)


V.E. Alekseev, Postgraduate student of Almetyevsk State Oil Institute (AGNI)
2, Lenin st., Almetyevsk, 423450, Russian Federation

R.Kh. Nizaev, Dr.Sc., Assistant Professor, Leading Research Associate, TatNIPIneft-PJSC TATNEFT
32, Musa Jalil st., Bugulma, 423236, Russian Federation

For citation:

V.E. Alekseev, R.Kh. Nizaev Otsenka tekhnologicheskoy effektivnosti tsiklicheskoy napravlennoy solyano-kislotnoy obrabotki po kharakteristikam vytesneniya (na primere kizelovskogo gorizonta Bavlinskogo mestorozhdeniya) [Assessment of technological efficiency of cyclic directed hydrochloric acid treatment by displacement characteristics (by the example of the kizelovksy horizon of the Bavlinsky field)]. Neftyanaya Provintsiya, No. 2(34), 2023. pp. 165-172. DOI EDN NUCXQL (in Russian)

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