Abstract
Thin-layer low-resistivity subtle reservoir is a kind of complex reservoir, accounting for large proportion in the currently developed oilfields. Predictably, this kind of reservoir will become more important with time. Compared with the conventional oil reservoir, it is much more difficult to conduct study about this kind of reservoir, and there are many difficult problems to be solved for the effective development of this kind of oil field. Therefore, it is necessary to study systematically about the geological characteristics of thin-layer low-resistivity subtle reservoir, to conduct special geological and development research, and to apply the research results to practical development. In this paper, with DK oilfield as an example, based on the integrated study results for more than 20 years, we summarized the geological characteristics of thin-layer low-resistivity subtle reservoirs, including the structure, formation, and the relationship of gas, oil and water. In addition, we systematically analyzed the development experiences and lessons of this type of reservoir. On the basis of the study results, we put forward a series of key measures, including measures in drilling, logging, logging interpretation, strata correlation, perforation optimization and water flooding enhanced recovery. With these methods, further understanding about this type of complex reservoir has been obtained, and better solution has been found for the related problems. We have found out the distribution regularity of oil, gas and water, and made clear about the characteristics of subtle reservoirs, which laid a solid foundation for further adjustment of oilfield development and making plans for reservoir stimulation. In this paper, we systematically discussed the characteristics and development work emphasis of this type of reservoir for the first time. Moreover, with a real oilfield as an example, this study can provide guidance for the development of the same type of thin-layer low-resistivity subtle reservoirs, with high reference value for the development of other fields.
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Liang, Xg., Zeng, X., Fan, Cj., Liu, Yy., Chen, L. (2022). Characteristics and Development Work Emphasis of Thin-Layer Low-Resistivity Subtle Reservoir – A Case Study of DK Oilfield. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2021. IFEDC 2021. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-2149-0_498
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DOI: https://doi.org/10.1007/978-981-19-2149-0_498
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