Integration of new data and improvement of predictive accuracy when creating geological and hydrodynamic model of the Kashiro-Podolsk carbonate deposits

UDK: 622.276.1/.4:55

DOI: 10.24887/0028-2448-2025-8-42-47

Key words: carbonate deposits, Kashiro-Podolsk deposits, low permeability reservoir, horizontal wells, core

Authors: R.F. Timerkhanov (RN-BashNIPIneft LLC, RF, Ufa); A.M. Vagizov (RN-BashNIPIneft LLC, RF, Ufa); I.M. Fayzova (RN-BashNIPIneft LLC, RF, Ufa); N.N. Shvetsova (RN-BashNIPIneft LLC, RF, Ufa); N.F. Lukmanov (RN-BashNIPIneft LLC, RF, Ufa); R.R. Haydarshin (RN-BashNIPIneft LLC, RF, Ufa); A.T. Gareev (RN-BashNIPIneft LLC, RF, Ufa); R.M. Zhdanov (Rosneft Oil Company, RF, Moscow); R.F. Yakupov (Bashneft-Dobycha LLC, RF, Ufa; Branch of Ufa State Petroleum Technological University in the city of Oktyabrsky, RF, Oktyabrsky)

Hydrocarbon development requires continuous improvement of production forecasting and management methods. The key role in this process is played by the creation and updating of geological and hydrodynamic models. Creation and numerical experiments on a hydrodynamic model is a time-consuming process. The complex geological structure and low state of exploration of carbonate reservoirs add uncertainty to the hydrodynamic modeling process. This, in turn, negatively affects the accuracy of forecasting such reservoirs. A variable approach with the study of all uncertainty factors in some cases enables to qualitatively improve the predictive ability of the model. This article is devoted to the description of the construction of the sector model of carbonate deposits of the Moscovian stage in the area of the unique field in the Republic of Bashkortostan. The model is based on the integration of the results of research work aimed at clarifying the geological structure and modern geological data. The study proposes an increase in the number of applied petrophysical dependencies to provide a more detailed description of the facies variability of carbonate reservoirs. The integration of new data into the process of construction and adaptation of geological and hydrodynamic data enabled to revise the distribution of reserves over the area and over the section of the carbonate deposits.

References

1. Lozin E.V., Razrabotka unikal’nogo Arlanskogo neftyanogo mestorozhdeniya vostoka Russkoy plity (Developing a unique Arlan oil field of the East of the Russian Plate), Ufa: Publ. of BashNIPIneft, 2012, 704 p.

2. Baymukhametov K.S., Enikeev V.R., Syrtlanov A.Sh., Yakupov F.M., Geologicheskoe stroenie i razrabotka Arlanskogo neftyanogo mestorozhdeniya (Geological structure and development of the Arlanskoye oilfield), Ufa: Publ. of Bashneft’, 1997, 368 p.

3. Shaydullin V.A., Medvedev D.A., Vagizov A.M. et al., Experience of water inflow limitation after multi-stage hydraulic fracturing of the carbonate deposits at the Arlanskoye field (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2024, no. 10, pp. 78–82, DOI: https://doi.org/10.24887/0028-2448-2024-10-78-82

4. Privalova O.R., Gadeleva D.D., Minigalieva G.I. et al., Well logging interpretation for Kashir and Podolsk deposits using neural networks (In Russ.), Neftegazovoe delo, 2021, no. 1, pp. 69-76, DOI: https://doi.org/10.17122/ngdelo-2021-1-69-76

5. Burikova T.V., Savel’eva E.N., Khusainova A.M. et al., Lithological and petrophysical characterization of Middle Carboniferous carbonates (a case study from north-western oil fields of Bashkortostan) (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2017, no. 10, pp. 18–21, DOI: https://doi.org/10.24887/0028-2448-2017-10-18-21

6. Timerkhanov R.F., Vagizov A.M., Shvetsova N.N., Monitoring of drilling results taking into account geological features of the Kashiro-Podolsk deposits of the Arlanskoye field (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2025, no. 2, pp. 22–27, DOI: https://doi.org/10.24887/0028-2448-2025-2-22-27

7. Leont’evskiy A.V., Gareev A.T., Minigalieva G.I. et al., Features of the geological structure of the Kashir and Podolsk deposits of the unique Arlan field (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2024, no. 9, pp. 50–55, DOI: https://doi.org/10.24887/0028-2448-2024-9-50-55

8. Pozhitkov N.D., Stupak I.A., Denisov V.V. et al., Approaches to modeling the Kashiro-Podolsk deposits of the Arlanskoe field in the Republic of Bashkortostan

(In Russ.), Neftegazovoe delo, 2022, V. 20, no. 5, pp. 45–54, DOI: https://doi.org/10.17122/ngdelo-2022-5-45-54

9. Shvetsova N.N., Timerkhanov R.F., Vagizov A.M. et al., Non-standard tasks and standard solutions for 3D seismic exploration for additional exploration (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2025, no. 3, pp. 32–36, DOI: https://doi.org/10.24887/0028-2448-2025-3-32-36