Abstract
The key technique of fine reservoir description is introduced in this chapter systematically. The high-resolution sequence stratigraphy is applied to fine stratigraphic classification and correlation, with the eight principles for layer classification proposed for the first time and the correlation between stratigraphic boundaries defined by the high-resolution sequence stratigraphy and traditional techniques clarified. The existence of fractures in volcanic reservoirs is delicately depicted by synthesizing various data to provide guidance for development planning. The sedimentary facies-based architecture characterization of the glutenite reservoirs of alluvial fan refines the description of a single sand body. The corresponding classification system for different classes of architectures is established, which corresponds to the traditional sedimentology-based system and highlights the role of lithology analysis in reservoir architecture characterization. The pore structure of the reservoir is microscopically classified and evaluated according to the origin, and its influence on oilfield development is analyzed. The research methods of reservoir heterogeneity and permeability heterogeneity characteristics are systematically introduced. On the basis of geological genesis analysis, qualitative analysis is integrated with quantitative classification for the purpose of comprehensive reservoir evaluation. Through cluster analysis and discriminant analysis, the flow units of a reservoir are studied, thereby providing technical support for the conversion of exploitation method from steam stimulation to steam flooding for better heavy oil recovery. Focusing on multipoint geostatistics, the geological modeling technology for fine reservoir description is introduced using examples. The current status of the remaining oil is summarized systematically, and the methods for the remaining oil characterization are presented, together with their advantages and disadvantages.
Published Version
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