摘要
本文对国内“近岸水下扇”的命名及分类进行了总结分析，简述了“近岸水下扇”的沉积模式以及形成条件、各亚相和微相的划分及其沉积特征，提出了影响“近岸水下扇”储集性的因素，评价了“近岸水下扇”各微相砂体的储集性能，指出了富集油气的沉积微相类型以及所形成的油藏类型。
The nearshore subaqueous fans are widespread in many Mesozoic and Cenozoic fault lake basins in eastern China. There has been considerable debate concerning the nomenclature of nearshore subaqueous fans for a long time. This paper presents a summary of the nomenclature and classification and model for the formation of the nearshore subaqueous fans in China, with the emphasis on the division of sedimentary facies belts and reservoir potential of the nearshore subaqueous fans. The main factors eontmlling the development and reservoir potential of the fan sandstone and conglomerate bodies are discussed, and oil- and gas-bearing sedimentary mierofacies types and oil pool types are described.
关键词
近岸
水下扇
沉积特征
储集性
命名
油气藏
nearshore subaqueous fan
sedimentary characteristics
reservoir potential
