Abstract
The interval from the Ordovician Yijianfang Formation to the 2nd member of Yingshan Formation in Fuman Oilfield is a typical fault-controlled carbonate fractured-vuggy reservoir. Its dynamic reserves estimation is a challenge for reservoir engineer. An improper estimation may result in large error and even mistakes in development decision-making. Based on the reservoir and flow characteristics as well as the challenges such as limited static pressure data, undefined development laws and difficult parameter determination in Fuman Oilfield, this paper proposes two methods, i.e. well test analysis and flowing material balance, to estimate the dynamic reserves. The basic principles and application conditions of the two methods are introduced, and verified with examples. The calculation results indicate that the dynamic and static reserves are basically consistent, providing a basis for the formulation of reservoir development strategies.
Copyright 2023, IFEDC Organizing Committee.
This paper was prepared for presentation at the 2023 International Field Exploration and Development Conference in Wuhan, China, 20–22 September 2023.
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Acknowledgments
The project is supported by Scientific Research and Technological Development Project of China National Petroleum Corporation “Research on Static Characterization and Dynamic Description Technology of Multiscale Fractured and Caved Reservoir” (Number 2021DJ1501).
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Yao, C. et al. (2024). Reserves Estimation for Ultra-deep Fault-Controlled Fractured Cavity Carbonate Reservoirs. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2023. IFEDC 2023. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-97-0479-8_49
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DOI: https://doi.org/10.1007/978-981-97-0479-8_49
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