O.V. Postnikova, L.A. Magadova, M.M. Mukhin, A.N. Abramov, A.P. Nebesskaya
Interstitial space transformation resulting from acid treatment of Bashkirian carbonate reservoir rocks
DOI 10.47148/0016-7894-2023-5-81-91
Key words: hydrochloric (acid) treatment; organochlorine compounds; oil; carbonate reservoir rocks; reservoir porosity and permeability; high-technology equipment; electron microscopy; interstitial space.
For citation: Postnikova O.V., Magadova L.A., Mukhin M.M., Abramov A.N., Nebesskaya A.P. Interstitial space transformation resulting from acid treatment of Bashkirian carbonate reservoir rocks. Geologiya nefti i gaza. 2023;(5):81–91. DOI: 10.41748/0016-7894-2023-5-81-91. In Russ.
Acknowledgement: This work was supported by the Ministry of Science and Higher Education of the Russian Federation under agreement № 075-15-2022-300 dated 18.04.2022 within the framework of the development program for a world-class Research Center «Efficient development of the global liquid hydrocarbon reserves».
Acid treatment for enhanced oil recovery is one of routine and efficient methods; and hydrochloric acid is the most commonly used one. Given the widespread occurrence of treatments with the use of hydrochloric acid, as well as substantial volume of acidic solutions pumped into wells (usually several tens of cubic metres per well), the question of the possibility of in situ organochlorine compounds formation resulting from interaction of hydrogen chloride with oil becomes relevant. The authors describe possibility of organochlorine compounds formation in oil after hydrochloric treatment. They examined the process of interaction of 0 to 24 % hydrochloric acid solution with oil at 80 °C, after which they determined content of organically bound chlorine using X-ray fluorescence analysis. The authors show that at the end of the study an increase in the organically bound chlorine amount in oil phase was observed compared to the “blank” experiment with distilled water. In addition, a scanning electron microscope was used to examine the influence of hydrochloric acid on structural features and mineral composition of carbonate deposits, which causes changes in reservoir porosity and permeability.
Ol’ga V. Postnikova ORCiD
Doctor of Geological and Mineralogical Sciences,
Professor
Gubkin University,
65 korp. 1, prospekt Leninsky, Moscow, 119991, Russia
e-mail: olgapostnikova@yandex.ru
Lyubov’ A. Magadova
Doctor of Technical Sciences,
Assistant professor
Gubkin University,
65 korp. 1, prospekt Leninsky, Moscow, 119991, Russia
e-mail: lubmag@gmail.com
Mikhail M. Mukhin ORCiD
Candidate of Technical Sciences,
Assistant professor
Gubkin University,
65 korp. 1, prospekt Leninsky, Moscow, 119991, Russia
e-mail: mmm.himeko@gmail.com
Aleksandr N. Abramov ORCiD
Postgraduate, engeneer, assistant
Gubkin University,
65 korp. 1, prospekt Leninsky, Moscow, 119991, Russia
e-mail: abramov.aln@yandex.ru
Aleksandra P. Nebesskaya ORCiD
Junior researcher
A.V. Topchiev Institute of Petrochemical Synthesis,
RAS (TIPS RAS),
29, prospect Leninsky, Moscow, 119991, Russia
e-mail: nebesskaya@ips.ac.ru
1. Peterson J.A., Clarke J.W. Petroleum geology and resources of the Volga-Ural Province, U.S.S.R. In: Geological Survey circular; 885. Denver; 1983. pp. 1–27.
2. Peterson J.A., Clarke J.W. Geology of the Volga-Ural Petroleum Province and detailed description of the Romashkino and Arlan oil fields. Open-File Report 83-711. Denver; 1983. 175 p. DOI: 10.3133/ofr83711.
3. Glushchenko V.N., Silin M.A. Neftepromyslovaya khimiya: Kislotnaya obrabotka skvazhin [Oilfield chemistry]: uchebnoe posobie. V 5 t. T. 4. Moscow: Interkontakt Nauka; 2010. 703 p. In Russ.
4. Reservoir acidizing and acid systems test methods [Kislotnye obrabotki plastov i metodiki ispytaniya kislotnykh sostavov]: Ucheb. posobie dlya studentov vuzov. In: M.A. Silin, L.A. Magadova, V.A. Tsygankov, M.M. Mukhin, L.F. Davletshina, eds. Moscow: RGU nefti i gaza imeni I.M. Gubkina; 2011. 120 p. In Russ.
5. Kelland M.A. Promyslovaya khimiya v neftegazovoi otrasli [Field chemistry in the oil and gas industry]. In: L.A. Magadovoi, ed. Saint Petersburg: TsOP «Professiya»; 2015. 608 p. In Russ.
6. Tat’yanina O.S., Abdrakhmanova L.M., Sudykin S.N., Zhilina E.V. Otsenka vliyaniya solyanoi kisloty na protsess obrazovaniya khlororganicheskikh soedinenii v nefti [Assessment of the influence of hydrochloric acid on the formation of organochlorine compounds in oil]. In: TatNIPIneft’. Naberezhnye Chelny; 2017. pp. 363–369. In Russ.
7. Kuplevich I.L., Davydov A.V., Russkina N.S. et al. Operativnyi podschet zapasov nefti i rastvorennogo gaza Karasevskogo mestorozhdeniya: otchet Litsenziya № 01193 NR [Operational calculation of oil and dissolved gas reserves of the Karasevsky field]. Zakrytoe aktsionernoe obshchestvo «Samar-Nafa». Moskva, 2011. In Russ.
8. GOST R 52247-2021. Neft’. Metody opredeleniya khlororganicheskikh soedinenii [GOST R 52247-2021. Crude oil. Methods for determination of organic chlorides : national Standard of the Russian Federation : date of introduction 2022-07-01]. Moscow: Rossiiskii institut standartizatsii; 2023. 40 p. Available at: https://internet-law.ru/gosts/gost/76179/?ysclid=lm4o2dy0pb701050780 (accessed 11.04.2023). In Russ.
9. Kirkinskaya V.N., Smekhov E.M. Karbonatnye porody-kollektory nefti i gaza [Carbonate rocks-collector of oil and gas]. Leningrad: Nedra; 1981. 255 p. In Russ.
Section: Oil and gas reservoirs