Release:
2025. Vol. 11. № 4 (44)About the authors:
Airat A. Galeev, Chief Specialist of the Process Automation and Data Management Division, RN-Geology Research Development, Tyumen, Russia; aagaleev@rn-gir.rosneft.ru, https://orcid.org/0009-0005-2582-2400Abstract:
Capacitance Resistance Models (CRM) are a series of simplified material balance models that use production and injection data to evaluate downhole interactions and estimate production. The field of application covers optimization of well operation conditions, assessment of flooding performance and reservoir pressure management. The use of such models does not require significant computational and time costs, which allows them to be applied in conditions requiring prompt decision-making. Despite the large number of publications devoted to improving CRMs and expanding their range of applicability, there are still some limitations and unaffected areas of research in these models. Such limitations include disregarding the multiphase flow in a reservoir, which leads to a decrease in the predicting quality in conditions of significant changes in the water cut. The appearance of free gas in a reservoir due to a decrease in pressure below the bubble-point pressure results in significant changes in the flow pattern, which is not taken into account in a CRM model. This paper describes a modified CRM-based model for three-phase flow conditions (oil, water, gas). The results of numerical experiments in real wells are shown, demonstrating the best predicting quality in comparison with a classical CRMP model.Keywords:
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