Neftyanaya Provintsiya
electronic peer-reviewed scholarly publication
Neftyanaya provintsiya No.3(31),2022

A new approach to defining reservoir properties by frac-ports in horizontal wells based on hydraulic fracturing data under high heterogeneity

B.S. Shevchenko, A.G. Akimov, R.R. Ziazev
DOI: https://doi.org/10.25689/NP.2022.3.56-67

Abstract


Transition from directional wells to horizontal is not only an efficiency increase of hard-to-extract reserves development , but also additional uncertainties that were not inherent to directional wells. In particular, the challenge of reserves localization and uncertainty in distribution of reservoir properties in a single-row system development become an even more laborious task. The approach considered in the paper makes it possible to evaluate reservoir properties and distribution of production for each frac port of horizontal wells separately without increasing the cost of the development. The developed approach is an alternative to a long-term well testing and well logging, which involve shutting down wells for the period of testing. To apply the proposed approach, downhole pressure gauge data, fluid flow rate during hydraulic fracturing, PVT properties of the reservoir fluid, reservoir characterization and completion parameters are sufficient. Based on output data, the following correlations are constructed: "permeability - total/instant leakoff" and "reservoir pressure - fracture closure pressure", which are used to estimate reservoir properties, as well as distribution of production for each frac-port separately. The proposed approach is universal and applicable to any horizontal wells with hydraulic fracturing and bottomhole pressure gauge in the assembly.

Key words:

HPF; reservoir properties distribution; heterogeneous formation; development of hard-to-recover reserves; dynamic well test

References

Asalkhuzina G.F., Davletbaev A.Ya., Il'yasov A.M. et al., Pressure drop analysis before and after fracture closure for test injections before main fracturing treatment (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2016, no. 11, pp. 41–45.

Makhota N.A., Davletbaev A.Ya., Fedorov A.I. et al., Examples of mini-frac test data interpretation in low-permeability reservoir (In Russ.), SPE 171175-RU, 2014, https://doi.org/10.2118/171175....

Howard G.C., Fast C.R. Optimum fluid characteristics for fracture extension//Drilling and Production Practice, API. – 1957. – Vol. 24. – P.261-270 (Appendix by E.D. Carter).

Mohamed M., Muhammad O.B. Diagnostic fracture injection test (DFIT)//Petroleum Today. – 2015. – Vol.11 – P.26-41

Authors

B.S. Shevchenko, Lead Specialist, LLC «Tyumen Petroleum Research Center»
79/1, Osipenko st., Tyumen, 625002, Russian Federation
E-mail: bsshevchenko2@tnnc.rosneft.ru

A.G. Akimov, Manager, LLC «Tyumen Petroleum Research Center»
79/1, Osipenko st., Tyumen, 625002, Russian Federation
E-mail: agakimov@tnnc.rosneft.ru

R.R. Ziazev, Head of Department, LLC «Tyumen Petroleum Research Center»
79/1, Osipenko st., Tyumen, 625002, Russian Federation
E-mail: rrziazev@tnnc.rosneft.ru

For citation:

RB.S. Shevchenko, A.G. Akimov, R.R. Ziazev Novyj podhod v opredelenii FES po frak-portam gorizontal'nyh skvazhin na osnove dannyh GRP v uslovijah vysokoj neodnorodnosti [A new approach to defining reservoir properties by frac-ports in horizontal wells based on hydraulic fracturing data under high]. Neftyanaya Provintsiya, No. 3(31), 2022. pp. 56-67.DOI https://doi.org/10.25689/NP.2022.3.56-67. EDN FFYKUR (in Russian)

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