Treatment of oil of the Bazhenov formation in Western Siberia

UDK: 622.692.1
DOI: 10.24887/0028-2448-2020-10-86-89
Key words: oil treatment process, Bazhenov suite, demulsification, demulsifier, oil, production water cut, quality
Authors: M.Kh. Gazizov (RN-BashNIPIneft LLC, RF, Ufa, the Russian Federation), M.S. Antonov (RN-BashNIPIneft LLC, RF, Ufa, the Russian Federation; Ufa State Petroleum Technological University, RF, Ufa), L.E. Kashtanova (RN-BashNIPIneft LLC, RF, Ufa, the Russian Federation), A.S. Ogneva (RN-BashNIPIneft LLC, RF, Ufa, the Russian Federation), A.V. Zhonin (RN-BashNIPIneft LLC, RF, Ufa, the Russian Federation), E.F. Smolyanec (RN-BashNIPIneft LLC, RF, Ufa, the Russian Federation)

Nowadays the oil and gas industry is focused on the development of hard-to-recover oil reserves, including the extraction of gaseous and liquid hydrocarbons from unconventional sources - gas hydrates, bituminous sandstones, deposits of coal and shale, while gas production of the latter is already industrial. Such objects also include the Bazhenov suite of the studied field. Oil production currently flows, in particular, to the total flow of the field conventional produced fluid to the booster pump station from the preliminary water discharge unit and the central water discharge station of the oil preliminary treatment unit.

The article presents the study results of the mixture treatment process of the Bazhenov suite oil and conventional reservoirs oil at various ratios in conditions of observance the technological regime of oil treatment facilities in the studied field. Demulsifiers have been identified, providing the mixtures required dehydration degree of the Bazhenov suite oil and conventional oil at various compositions in oil treatment facilities of the studied field, providing the required quality of oil and discharged water in terms the content of residual oil products and mechanical impurities. The study results of the oil treatment process when changing the mixture composition of the Bazhenov suite oil and conventional oil as a result of hydraulic fracturing operations performing are presented. It was found that the most effective reagents for the separation of oil-water emulsions, depending on the mixture ratio of the Bazhenov suite oil - conventional oil of the studied field, are demulsifiers Reagent 6 (at a dosage of 19.0 g/t), Reagent 9 (24.9 g/t), Reagent 11 (25.0 g/t), Reagent 12 (24.4 g/t), Reagent 2 at a dosage of 21.3 (g/t).

References

1. Akselrod S.M., Shale oil production: current state and prospects (based on foreign publications) (In Russ.), Karotazhnik, 2013, no. 8, pp. 94–130.

2. Ampilov Yu., Russian shale oil. Prospects for production amid sanctions and falling oil prices (In Russ.), Oil & Gas Journal Russia, 2015, no. 3, pp. 24–30.

 3. Il'inskiy A.A., Perspektivy ispol'zovaniya netraditsionnykh is-tochnikov UVS v energetike (Prospects for the use of unconventional hydrocarbon sources in the power industry), Proceedings of St. Petersburg Scientific Forum “Novye tekhnologii dlya novoy ekonomiki Rossii” (New technologies for the new Russian economy), VIII St. Petersburg Meeting of Nobel Prize Laureates, St. Petersburg, 2013, pp. 57–61.

4. Prishchepa O.M., Aver'yanova O.Yu., The role of unconventional hydrocarbon sources in the mineral resource policy (In Russ.), Mineral'nye resursy Rossii. Ekonomika i upravlenie, 2013, no. 1, pp. 21–24.

5. Varlamov A.I., Afanasenkov A.P., Pyr'ev V.I. et al., Osnovnye vidy istochnikov netraditsionnykh resursov UVS i perspektivy ikh osvoeniya (The main types of sources of unconventional hydrocarbon resources and the prospects for their development), Proceedings of  All-Russian meeting “Metodicheskie problemy geologorazvedochnykh i nauchno-issledovatel'skikh rabot v neftegazovoy otrasli” (Methodical problems of geological exploration and research in the oil and gas industry), dedicated to the 60th anniversary of the formation of VNIGNI, Moscow, 2013, URL: http://www.rosnedra.gov.ru/data/Files/File/2566.pdf.

6. Kryukov V.A., Selezneva O.A., Hydrocarbons reserves in a changing institutional environment (In Russ.), Ekonomicheskiy zhurnal VShE, 2013, no. 3, pp. 407–429, URL: http://www.hse.ru/data/2013/12/19/1338922109/Kryukov.pdf

7. Kiryukhin L.G., Kapustin M.I., Lodzhevskaya M.I. et al., Neftegazonosnost' glubokopogruzhennykh otlozheniy Vostochno-Evropeyskoy platformy (Oil and gas content of deeply submerged sediments of the East European platform), Moscow: Nedra Publ., 1993, 317 p.

8. Tsvetkov L.D., Tsvetkova N.L., Russian shale oil (In Russ.), Vesti gazovoy nauki, 2013, no. 5 (16), pp. 219–230.

9. Rykus M.V., Ogneva A.S., Smolyanets E.F., Antonov M.S., Some aspects of oil and gas carbonaceous depositions formation on the territory of Russia (In Russ.), Neftegazovoe delo, 2020, V. 18, no. 1, pp. 48–59.

Nowadays the oil and gas industry is focused on the development of hard-to-recover oil reserves, including the extraction of gaseous and liquid hydrocarbons from unconventional sources - gas hydrates, bituminous sandstones, deposits of coal and shale, while gas production of the latter is already industrial. Such objects also include the Bazhenov suite of the studied field. Oil production currently flows, in particular, to the total flow of the field conventional produced fluid to the booster pump station from the preliminary water discharge unit and the central water discharge station of the oil preliminary treatment unit.

The article presents the study results of the mixture treatment process of the Bazhenov suite oil and conventional reservoirs oil at various ratios in conditions of observance the technological regime of oil treatment facilities in the studied field. Demulsifiers have been identified, providing the mixtures required dehydration degree of the Bazhenov suite oil and conventional oil at various compositions in oil treatment facilities of the studied field, providing the required quality of oil and discharged water in terms the content of residual oil products and mechanical impurities. The study results of the oil treatment process when changing the mixture composition of the Bazhenov suite oil and conventional oil as a result of hydraulic fracturing operations performing are presented. It was found that the most effective reagents for the separation of oil-water emulsions, depending on the mixture ratio of the Bazhenov suite oil - conventional oil of the studied field, are demulsifiers Reagent 6 (at a dosage of 19.0 g/t), Reagent 9 (24.9 g/t), Reagent 11 (25.0 g/t), Reagent 12 (24.4 g/t), Reagent 2 at a dosage of 21.3 (g/t).

References

1. Akselrod S.M., Shale oil production: current state and prospects (based on foreign publications) (In Russ.), Karotazhnik, 2013, no. 8, pp. 94–130.

2. Ampilov Yu., Russian shale oil. Prospects for production amid sanctions and falling oil prices (In Russ.), Oil & Gas Journal Russia, 2015, no. 3, pp. 24–30.

 3. Il'inskiy A.A., Perspektivy ispol'zovaniya netraditsionnykh is-tochnikov UVS v energetike (Prospects for the use of unconventional hydrocarbon sources in the power industry), Proceedings of St. Petersburg Scientific Forum “Novye tekhnologii dlya novoy ekonomiki Rossii” (New technologies for the new Russian economy), VIII St. Petersburg Meeting of Nobel Prize Laureates, St. Petersburg, 2013, pp. 57–61.

4. Prishchepa O.M., Aver'yanova O.Yu., The role of unconventional hydrocarbon sources in the mineral resource policy (In Russ.), Mineral'nye resursy Rossii. Ekonomika i upravlenie, 2013, no. 1, pp. 21–24.

5. Varlamov A.I., Afanasenkov A.P., Pyr'ev V.I. et al., Osnovnye vidy istochnikov netraditsionnykh resursov UVS i perspektivy ikh osvoeniya (The main types of sources of unconventional hydrocarbon resources and the prospects for their development), Proceedings of  All-Russian meeting “Metodicheskie problemy geologorazvedochnykh i nauchno-issledovatel'skikh rabot v neftegazovoy otrasli” (Methodical problems of geological exploration and research in the oil and gas industry), dedicated to the 60th anniversary of the formation of VNIGNI, Moscow, 2013, URL: http://www.rosnedra.gov.ru/data/Files/File/2566.pdf.

6. Kryukov V.A., Selezneva O.A., Hydrocarbons reserves in a changing institutional environment (In Russ.), Ekonomicheskiy zhurnal VShE, 2013, no. 3, pp. 407–429, URL: http://www.hse.ru/data/2013/12/19/1338922109/Kryukov.pdf

7. Kiryukhin L.G., Kapustin M.I., Lodzhevskaya M.I. et al., Neftegazonosnost' glubokopogruzhennykh otlozheniy Vostochno-Evropeyskoy platformy (Oil and gas content of deeply submerged sediments of the East European platform), Moscow: Nedra Publ., 1993, 317 p.

8. Tsvetkov L.D., Tsvetkova N.L., Russian shale oil (In Russ.), Vesti gazovoy nauki, 2013, no. 5 (16), pp. 219–230.

9. Rykus M.V., Ogneva A.S., Smolyanets E.F., Antonov M.S., Some aspects of oil and gas carbonaceous depositions formation on the territory of Russia (In Russ.), Neftegazovoe delo, 2020, V. 18, no. 1, pp. 48–59.



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