On the selection of oil fields areas for the effective use of cyclic waterflooding

UDK: 622.276.43"5"
DOI: 10.24887/0028-2448-2019-4-58-61
Key words: cyclic waterflooding, reservoir simulation, enhanced oil recovery (EOR) method
Authors: S.P. Rodionov (Tyumen Branch of Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of RAS, RF, Tyumen; CONCORD LLC, RF, Moscow), O.N. Pichugin (CONCORD LLC, RF, Moscow), V.P. Kosyakov (Tyumen Branch of Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of RAS, RF, Tyumen; CONCORD LLC, RF, Moscow), Ya.V. Shirshov (CONCORD LLC, RF, Moscow)

One of the most simple, inexpensive and frequently used hydrodynamic methods of enhanced oil recovery is cyclic waterflooding. Despite the development of hydrodynamic modelling technologies, the prediction of the cyclic flooding efficiency remains a challenge. Due to the rapid flow of filtration processes during cyclical waterflooding, the calculated time step needs to be chosen much smaller than when simulating stationary flooding. Therefore, the simulation of cyclic flooding using a hydrodynamic simulator takes much more time, which may be unacceptable in practice. Without taking into account this limitation on the time step, the calculated efficiency will be unreliable (usually close to zero).

The selection of optimal values of the cyclic waterflooding parameters usually requires multiple simulation runs. To reduce the number of simulation runs that require significant time we proposed an effective technology for simulating cyclic waterflooding based on the ‘top-down’ concept. The process is divided into stages, including selection of promising areas from the point of view of additional oil recovery and parameters characterizing the cyclic impact on the reservoir. The technology allows us in real time to select prospective areas and perform an assessment of the impact on the additional oil production of the location of the wells, the period and duration of the cyclic action, and the like.

The advantages of the proposed technology in comparison with analogues are demonstrated, as well as the results of its successful application in some oil fields of Western Siberia and Kazakhstan.

References

1. Bokserman A.A., Shalimov B.V., On the cyclic effect on reservoirs with double porosity when oil is displaced by water (In Russ.), Izvestiya AN SSSR, MZhG, 1967, no. 2, рр. 168–174.

2. Surguchev M.L., Tsynkova O.E., Sharbatova I.N. et al., Tsiklicheskoe zavodnenie neftyanykh plastov (Cyclical flooding of oil reservoirs), Moscow: Publ. of VNIIOENG, 1977.

3. Sharbatova I.N., Surguchev M.L., Tsiklicheskoye vozdeystviye na neodnorodnyye neftyanyye plasty (Cyclical effects on heterogeneous oil layers), Moscow: Nedra Publ., 1988, 121 p.

4. Langdalen H., Cyclic water injection: MS thesis, Norwegian University of Science and Technology, 2014, р. 140.

5. Rodionov S.P., Kosyakov V.P., Sokolyuk L.N., Shirshov Ya.V., Fast simulation method of cyclic water-flooding using averaged two phase flow equations (In Russ.), Neftepromyslovoe delo, 2015, no. 11, pp. 59–63.

6. Rodionov S.P., KosyakovV.P., Pichugin O.N. et al., A new technology based on two-phase flow models for rapid selection of wells for cyclic waterflooding, SPE 187912-RU, 2017.

7. Gavris' A.S., Kosyakov V.P., Botalov A.Yu., The concept of effective design of hydrocarbon fields development. Software solutions (In Russ.), Neftepromyslovoe delo, 2015, no. 11, pp. 75–85.

8. Bogachev K.Yu., Effektivnoe reshenie zadachi fil'tratsii vyazkoy szhimaemoy mnogofaznoy mnogokomponentnoy smesi na parallel'nykh EVM (Effective solution of the filtration problem of a viscous compressible multiphase multicomponent mixture on parallel computers): thesis of doctor of physical and mathematical science, Moscow, 2012.

9. Rodionov S.P., Kosyakov V.P. , Pichugin O.N., Musakaev E.N., New rapid modelling technology to select optimal waterflooding options for oil fields, SPE 182004-MS, 2016.

10. Yaroslavov A.O., Matematicheskoe modelirovanie fil'tratsii nen'yutonovskikh zhidkostey v sloisto-neodnorodnykh plastakh i razrabotka metodik staticheskogo analiza geologo-promyslovoy informatsii (Mathematical modeling of filtration of non-Newtonian fluids in layered heterogeneous reservoirs and the development of methods for static analysis of field-geological information): thesis of candidate physical and mathematical science, Tyumen', 2003.

11. Kambarov G.S., Almamedov D. G., Makhmudova T.Yu., Determining the initial recoverable reserves of oilfield (In Russ.), Azerbaydzhanskoe neftyanoe khozyaystvo, 1974, no. 3, pp. 22–24.

12. Vladimirov I.V., Pichugin O.N., Gorshkov A.V., Experience of application of non-stationary flooding technology at high-viscous deposits of North Buzachi oil field (In Russ.), Neftepromyslovoe delo, 2013, no. 11, pp. 46–52.

One of the most simple, inexpensive and frequently used hydrodynamic methods of enhanced oil recovery is cyclic waterflooding. Despite the development of hydrodynamic modelling technologies, the prediction of the cyclic flooding efficiency remains a challenge. Due to the rapid flow of filtration processes during cyclical waterflooding, the calculated time step needs to be chosen much smaller than when simulating stationary flooding. Therefore, the simulation of cyclic flooding using a hydrodynamic simulator takes much more time, which may be unacceptable in practice. Without taking into account this limitation on the time step, the calculated efficiency will be unreliable (usually close to zero).

The selection of optimal values of the cyclic waterflooding parameters usually requires multiple simulation runs. To reduce the number of simulation runs that require significant time we proposed an effective technology for simulating cyclic waterflooding based on the ‘top-down’ concept. The process is divided into stages, including selection of promising areas from the point of view of additional oil recovery and parameters characterizing the cyclic impact on the reservoir. The technology allows us in real time to select prospective areas and perform an assessment of the impact on the additional oil production of the location of the wells, the period and duration of the cyclic action, and the like.

The advantages of the proposed technology in comparison with analogues are demonstrated, as well as the results of its successful application in some oil fields of Western Siberia and Kazakhstan.

References

1. Bokserman A.A., Shalimov B.V., On the cyclic effect on reservoirs with double porosity when oil is displaced by water (In Russ.), Izvestiya AN SSSR, MZhG, 1967, no. 2, рр. 168–174.

2. Surguchev M.L., Tsynkova O.E., Sharbatova I.N. et al., Tsiklicheskoe zavodnenie neftyanykh plastov (Cyclical flooding of oil reservoirs), Moscow: Publ. of VNIIOENG, 1977.

3. Sharbatova I.N., Surguchev M.L., Tsiklicheskoye vozdeystviye na neodnorodnyye neftyanyye plasty (Cyclical effects on heterogeneous oil layers), Moscow: Nedra Publ., 1988, 121 p.

4. Langdalen H., Cyclic water injection: MS thesis, Norwegian University of Science and Technology, 2014, р. 140.

5. Rodionov S.P., Kosyakov V.P., Sokolyuk L.N., Shirshov Ya.V., Fast simulation method of cyclic water-flooding using averaged two phase flow equations (In Russ.), Neftepromyslovoe delo, 2015, no. 11, pp. 59–63.

6. Rodionov S.P., KosyakovV.P., Pichugin O.N. et al., A new technology based on two-phase flow models for rapid selection of wells for cyclic waterflooding, SPE 187912-RU, 2017.

7. Gavris' A.S., Kosyakov V.P., Botalov A.Yu., The concept of effective design of hydrocarbon fields development. Software solutions (In Russ.), Neftepromyslovoe delo, 2015, no. 11, pp. 75–85.

8. Bogachev K.Yu., Effektivnoe reshenie zadachi fil'tratsii vyazkoy szhimaemoy mnogofaznoy mnogokomponentnoy smesi na parallel'nykh EVM (Effective solution of the filtration problem of a viscous compressible multiphase multicomponent mixture on parallel computers): thesis of doctor of physical and mathematical science, Moscow, 2012.

9. Rodionov S.P., Kosyakov V.P. , Pichugin O.N., Musakaev E.N., New rapid modelling technology to select optimal waterflooding options for oil fields, SPE 182004-MS, 2016.

10. Yaroslavov A.O., Matematicheskoe modelirovanie fil'tratsii nen'yutonovskikh zhidkostey v sloisto-neodnorodnykh plastakh i razrabotka metodik staticheskogo analiza geologo-promyslovoy informatsii (Mathematical modeling of filtration of non-Newtonian fluids in layered heterogeneous reservoirs and the development of methods for static analysis of field-geological information): thesis of candidate physical and mathematical science, Tyumen', 2003.

11. Kambarov G.S., Almamedov D. G., Makhmudova T.Yu., Determining the initial recoverable reserves of oilfield (In Russ.), Azerbaydzhanskoe neftyanoe khozyaystvo, 1974, no. 3, pp. 22–24.

12. Vladimirov I.V., Pichugin O.N., Gorshkov A.V., Experience of application of non-stationary flooding technology at high-viscous deposits of North Buzachi oil field (In Russ.), Neftepromyslovoe delo, 2013, no. 11, pp. 46–52.



Attention!
To buy the complete text of article (a format - PDF) or to read the material which is in open access only the authorized visitors of the website can. .

Mobile applications

Read our magazine on mobile devices

Загрузить в Google play

Press Releases

21.10.2020
19.10.2020
15.10.2020