Decision support algorithm for drilling new sections of a carbonate reservoir

UDK: 622.276.342.008
DOI: 10.24887/0028-2448-2023-11-108-112
Key words: carbonate reservoir, classification, development system, hydrodynamic modelling, multivariate calculations
Authors: A.I. Sayakhutdinov (RN-BashNIPIneft LLC, RF, Ufa), S.I. Boyko (RN-BashNIPIneft LLC, RF, Ufa), A.A. Sonnykh (RN-BashNIPIneft LLC, RF, Ufa), A.A. Povalyaev (RN-BashNIPIneft LLC, RF, Ufa), M.S. Antonov (RN-BashNIPIneft LLC, RF, Ufa; Ufa State Petroleum Technological University, RF, Ufa), F.M. Kalimullin (Rosneft Oil Company, RF, Moscow), K.V. Toropov (Ufa State Petroleum Technological University, RF, Ufa)

The choice of a development system for new oil fields is made by carrying out a series of calculations of predictive indicators on a hydrodynamic model, followed by an economic evaluation of the proposed options. A large number of varying development parameters (well placement scheme, distance between wells, completion method, horizontal well length, presence and number of hydraulic fractures, time of oil injection well development, etc.), as well as a large range of variation of these parameters values, require considerable time to select optimal values under the existing macroeconomic parameters. The developed algorithm for the selection of the optimal well placement system for carbonate reservoirs allows to realize a large variation of the development system parameters in a short time. In this paper, the algorithm for selecting the optimal well placement system is presented on the example of one of the Company's fields. The aim of this study is to establish a method for optimizing multivariate carbonate reservoir development systems. Our proposed method builds on the existing corporate software module, which facilitates the making of operational design decisions for any new drilling sites of carbonate objects. The module has been modified to include parameters that describe fluid filtration in a carbonate reservoir, such as reservoir type, wettability character, and secondary medium parameters.

References

1. Fedorov A.E., Dilmukhametov I.R., Povalyaev A.A. et al., Multivariate optimization of the system for the development of low-permeability reservoirs of oil fields of the Achimov formation (In Russ.), SPE-201811-RU, 2020, DOI: http://doi.org/10.2118/201811-RU

2. Fedorov A.E., Suleymanov B.I., Povalyaev A.A. et al., Decision support system for tight oil fields development Achimov deposits and their analogues using machine learning algorithms (In Russ.), SPE-201921-RU, 2020, DOI: http://doi.org/10.2118/201921-MS

3. Sayakhutdinov A.I., Ambartsumyan R.A., Kalimullin F.M., Classification of carbonate reservoirs for the purpose of increasing the efficiency of the development of carbonate objects (In Russ.), Ekspozitsiya Neft' Gaz = Exposition Oil Gas, 2022, no. 6, pp. 58–63, DOI: http://doi.org/10.24412/2076-6785-2022-6-58-63

4. Nelson R., Geologic analysis of naturally fractured reservoirs, Gulf Professional Publishing, 2001, 352 p.

5. Golf-Racht T., Fundamentals of fractured reservoir engineering, Amsterdam, New York: Elsevier, 1982.

6. Aguilera R., Naturally fractured reservoirs, Tulsa, Oklahoma: PennWell Books, 1995, 521 p.

7. Sergeychev A.V., Toropov K.V., Antonov M.S. et al., Automated intelligent assistant in the selection of well placement when developing hard-to-recover reserves (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2020, no. 10, pp. 76–81, DOI: https://doi.org/10.24887/0028-2448-2020-10-76-81

8. Rozova A.R., Saf'yannikov I.M., World experience in applying various systems to develop low-permeable carbonate reservoirs (In Russ.), Neft'. Gaz. Novatsii, 2019, no. 1, pp. 24-28.

9. Lutfullin A.A., Basic methods of increasing of recoverable oil in Russia (In Russ.), Burenie i neft', 2009, no. 1, pp. 6–9.

10. Nurgaliev A.A., Khabibullin L.T., Analysis of well spacing effect on oil recovery and flooding pattern in small carbonate reservoirs in the Republic of Tatarstan (In Russ.), Interekspo Geo-Sibir', 2016, V. 2, no. 3, pp. 234–238

11. Topal A.Yu., Usmanov T.S., Zorin A.M. et al., Efficiency of horizontal wells elongation in carbonate reservoirs on the example of deposits Udmurtneft OJSC (In Russ.), Burenie i neft', 2018, no. 10, pp. 60–64.



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