Abstract
Regardless of natural water flooding or artificial water flooding in sandstone reservoir, due to the existence of reservoir heterogeneity, the long-term erosion of fluid leads to the formation of preponderant seepage channels, which intensifies reservoir water flooding and reduces oil recovery factor. Based on core data and field production data, applying geology and reservoir engineering analysis, this paper clarified the formation mechanism of preponderant seepage channels in large layered sandstone reservoirs with co-development of natural water flooding and artificial water flooding. A numerical simulation model considering time-varying permeability of reservoir was established. Key indexes of geology, fluid and development were selected to study the influencing factors of preponderant seepage channel formation, and orthogonal experimental analysis was used to determine the main controlling factors. It is important for preponderant seepage channel identification and remaining oil distribution study.
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This paper was prepared for presentation at the 2023 International Field Exploration and Development Conference in Wuhan, China, 20-22 September 2023. This paper was selected for presentation by the IFEDC Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the IFEDC Technical Team and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC Technical Committee its members. Papers pre-sented at the Conference are subject to publication review by Professional Team of IFEDC Technical Committee. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of IFEDC Organizing Committee is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of IFEDC. Contact email: pa-per@ifedc.org.
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The project is supported by CNPC International development and production science and technology project (Number 2023-YF-01–09).
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Feng, M. et al. (2024). Formation Mechanism Study of Preponderant Seepage Channels in Natural Water Flooding and Artificial Water Flooding Co-development Reservoir. 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/10.1007/978-981-97-0468-2_33
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DOI: https://doi.org/10.1007/978-981-97-0468-2_33
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