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Application of new methodical approaches to increasing the profitability of production of the base well stock in conditions of low oil prices on the world market

UDK: 338.45:622.276
DOI: 10.24887/0028-2448-2020-6-22-26
Key words: system-targeted impact on the reservoir, profitability of production, cost of oil, net income, reduction of OPEX, energy consumption, leveling injection profile of wells, non-stationary waterflooding, physicochemical EOR methods, additional oil production, increase in recoverable reserves, reduction of associated water production, reduction of unproductive injection of water
Authors: A.V. Fomkin (VNIIneft JSC, RF, Moscow), A.M. Petrakov (VNIIneft JSC, RF, Moscow), E.N. Baikova (VNIIneft JSC, RF, Moscow), R.R. Rayanov (VNIIneft JSC, RF, Moscow), M.A. Kuznetsov (Gazpromneft-Noyabrskneftegas LLC, RF, Noyabrsk), S.M. Ishkinov (Gazprom Neft PJSC, RF, Saint-Petersburg)

In the context of the reduction in oil production under the OPEC agreement and the decrease in the cost of oil on the world market, possibly for a long-term period, one of the main strategic tasks of the Russian oil and gas industry is to increase the profitability of operating the base well stock in brownfields by reducing of oil production cost. Decrease in oil production, increase in water cut in well production, decrease in reservoir pressure require an increase in the cost of electric energy for lifting fluid, oil gathering and processing, and injection of produced water. The energy costs of the brownfields can be up to 50–60 % of all OPEX for oil production. A promising direction for increasing profitability are low-cost measures aimed at decline volumes of produced water and reducing energy consumption with a simultaneous increase in additional oil production and residual recoverable reserves.

The article discusses the results of applying technologies to increase the efficiency of operating the base well stock using the example of PJSC Slavneft-Megionneftegaz. Slavneft-Megionneftegas PJSC has performed 2,364 well operations of leveling injection profile of wells using 27 different technologies under the principles of a systematic approach since 2006. At 338 injection well sites works on non-stationary waterflooding was carried out. The additional oil production after leveling injection profile’s well treatment is more than one thousand tons per well, the percentage of success of these works is about 90%.The cumulative additional oil production as of March 1, 2020 amounted to 2.7 mln tons, the decrease in produced water - 14.1 mln tons, unproductive injection of water decreased by 20.4 mln m3; the accumulated net income of the subsoil user exceeded 4.5 bln rubles.

According to VNIIneft, in the current conditions of OPEC oil production decline and low oil prices, the cost of additional oil production from the leveling injection profile’s well treatment is about $ 2.1–2.5 per barrel, which is about 2.7 times lower than the cost of basic production without this works.The proposed approaches have great relevance, high resistance to risk factors, cost-effective and have great potential for further replication in the Western Siberia’s fields and the whole of Russia with aim to ensure financial stability in a worsening macroeconomic conditions.

References

1. Vadimova E., Cunning, taxes and calculation methods: what is behind the figures for production costs in IPO Saudi Aramco? (In Russ.), Neft' i kapital, 2019, URL: https://oilcapital.ru/article/general/15-11-2019/

2. URL: https://ria.ru/20171025/1507529919.html

3. URL: https://tass.ru/ekonomika/7998817

4. URL: https://1prime.ru/energy/20191113/830544350.html

5. URL: http://www.energovector.com/strategy-kak-elektrizuetsya-neft.html

6. Ivanovskiy V.N., Energy of oil production: the main directions of energy consumption optimization (In Russ.), Inzhenernaya praktika, 2011, no. 6.

7. Khavkin A.Ya., Sorokin A.V., Energy assessment of oil production intensification methods (In Russ.), Neftyanoe khozyaystvo=Oil Industry, 1999, no. 6, pp. 24–25.

8. Vinogradova O., Expertise (In Russ.), Neftyanaya vertikal', 1998, no. 7–8, pp. 42–43.

9. Patent no. 2513787 RF, Method for oil deposit development based on system address action, Inventors: Krjanev D.Ju., Zhdanov S.A., Petrakov A.M.

10. RD 39-0147035-254-88R, Rukovodstvo po primeneniyu sistemnoy tekhnologii vozdeystviya na neftyanye plasty mestorozhdeniy Glavtyumenneftegaza (Guidance on the application of systemic technology for influencing oil strata of Glavtyumenneftegaz fields), Moscow – Tyumen - Nizhnevartovsk, VNII, 1988, 236 p.

11. Certificate of the Russian Federation on state registration of a computer program no. 2019660578, PC SVP.

12. Fomkin A.V., Petrakov A.M., Rayanov R.R. et al., Software for the system technology of reservoir stimulation (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2019, no. 3, pp. 102–106.

13. 10 let effektivnogo sotrudnichestva nauki i proizvodstva v sfere uvelicheniya nefteotdachi. Perspektivy novogo urovnya otraslevogo vzaimodeystviya (10 years of effective cooperation between science and production in the field of enhanced oil recovery. Prospects for a new level of industry interaction), Proceedings of XVIII scientific and practical conference of deposits with hard-to-recover reserves, Tyumen, 18–20 of September 2018, Moscow: Neftyanoe khozyaystvo Publ., 2018, 23 p.

In the context of the reduction in oil production under the OPEC agreement and the decrease in the cost of oil on the world market, possibly for a long-term period, one of the main strategic tasks of the Russian oil and gas industry is to increase the profitability of operating the base well stock in brownfields by reducing of oil production cost. Decrease in oil production, increase in water cut in well production, decrease in reservoir pressure require an increase in the cost of electric energy for lifting fluid, oil gathering and processing, and injection of produced water. The energy costs of the brownfields can be up to 50–60 % of all OPEX for oil production. A promising direction for increasing profitability are low-cost measures aimed at decline volumes of produced water and reducing energy consumption with a simultaneous increase in additional oil production and residual recoverable reserves.

The article discusses the results of applying technologies to increase the efficiency of operating the base well stock using the example of PJSC Slavneft-Megionneftegaz. Slavneft-Megionneftegas PJSC has performed 2,364 well operations of leveling injection profile of wells using 27 different technologies under the principles of a systematic approach since 2006. At 338 injection well sites works on non-stationary waterflooding was carried out. The additional oil production after leveling injection profile’s well treatment is more than one thousand tons per well, the percentage of success of these works is about 90%.The cumulative additional oil production as of March 1, 2020 amounted to 2.7 mln tons, the decrease in produced water - 14.1 mln tons, unproductive injection of water decreased by 20.4 mln m3; the accumulated net income of the subsoil user exceeded 4.5 bln rubles.

According to VNIIneft, in the current conditions of OPEC oil production decline and low oil prices, the cost of additional oil production from the leveling injection profile’s well treatment is about $ 2.1–2.5 per barrel, which is about 2.7 times lower than the cost of basic production without this works.The proposed approaches have great relevance, high resistance to risk factors, cost-effective and have great potential for further replication in the Western Siberia’s fields and the whole of Russia with aim to ensure financial stability in a worsening macroeconomic conditions.

References

1. Vadimova E., Cunning, taxes and calculation methods: what is behind the figures for production costs in IPO Saudi Aramco? (In Russ.), Neft' i kapital, 2019, URL: https://oilcapital.ru/article/general/15-11-2019/

2. URL: https://ria.ru/20171025/1507529919.html

3. URL: https://tass.ru/ekonomika/7998817

4. URL: https://1prime.ru/energy/20191113/830544350.html

5. URL: http://www.energovector.com/strategy-kak-elektrizuetsya-neft.html

6. Ivanovskiy V.N., Energy of oil production: the main directions of energy consumption optimization (In Russ.), Inzhenernaya praktika, 2011, no. 6.

7. Khavkin A.Ya., Sorokin A.V., Energy assessment of oil production intensification methods (In Russ.), Neftyanoe khozyaystvo=Oil Industry, 1999, no. 6, pp. 24–25.

8. Vinogradova O., Expertise (In Russ.), Neftyanaya vertikal', 1998, no. 7–8, pp. 42–43.

9. Patent no. 2513787 RF, Method for oil deposit development based on system address action, Inventors: Krjanev D.Ju., Zhdanov S.A., Petrakov A.M.

10. RD 39-0147035-254-88R, Rukovodstvo po primeneniyu sistemnoy tekhnologii vozdeystviya na neftyanye plasty mestorozhdeniy Glavtyumenneftegaza (Guidance on the application of systemic technology for influencing oil strata of Glavtyumenneftegaz fields), Moscow – Tyumen - Nizhnevartovsk, VNII, 1988, 236 p.

11. Certificate of the Russian Federation on state registration of a computer program no. 2019660578, PC SVP.

12. Fomkin A.V., Petrakov A.M., Rayanov R.R. et al., Software for the system technology of reservoir stimulation (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2019, no. 3, pp. 102–106.

13. 10 let effektivnogo sotrudnichestva nauki i proizvodstva v sfere uvelicheniya nefteotdachi. Perspektivy novogo urovnya otraslevogo vzaimodeystviya (10 years of effective cooperation between science and production in the field of enhanced oil recovery. Prospects for a new level of industry interaction), Proceedings of XVIII scientific and practical conference of deposits with hard-to-recover reserves, Tyumen, 18–20 of September 2018, Moscow: Neftyanoe khozyaystvo Publ., 2018, 23 p.



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