中文摘要：

高频层序是由海平面高频振动变化而形成的地层记录，一般形成于具有稳定沉降背景的盆地中，可与米兰科维奇天文周期旋回相对应。作为非海岸沉积环境的陆表海台，其高频层序发育具有一定的特殊性和代表性。在大量岩心观察、薄片分析、测井相研究的基础上，按能量环境、海平面升降及海水咸化旋回以及相序组合等特征，并考虑高频层序格架下储集层成因类型，将川中磨溪气田嘉二段陆表海碳酸盐台地高频层序划分为3类：台坪型、台内浅滩型与潟湖型。以膏质岩类、颗粒岩类广泛发育为特征，常见各种暴露标志，总体表现为向上变浅序列的多种岩性组合。高频层序地层格架内各级层序界面特征清晰，岩性组合稳定，可对比性强。同时，探讨了高频层序格架下早期储层成因机制，指出稳定沉积陆表海台地背景下的高频层序控制了岩相发育序列及同生岩溶作用，进而控制了不同成因类型储集层发育。

英文摘要：

High-frequency sequences,generally formed in basins with stable subsidence settings and correspond well to astronomical Milankovitch cycles,are vivid records of high-frequency eustatic flucturation.Such sequences developed in epicontinental platforms of non-coastal sedimentary environment are both representative and special in certain ways.By combining core observations,thin section analyses and logging facies studies with such factors as energy environment,eustatic fluctuation and sea water salinity cycle as well as reservoir genesis types under high-frequency sequential framework,we classified high-frequency sequences in the epicontinental carbonate platform of the Jia 2 member of the Moxi gas field into the following three types：platform flat type,intraplatform shoal type and lagoon type.The sequences are found to be characterized by widely-distributed gypsiferous rocks and grainstone with all kinds of exposure marks.As a whole,they consist of stratigraphic assemblages of shallowing upwards sequences.Within the framework,sequences are separated by clear boundaries and stratigraphic assemblages are stable and highly comparable.The paper also discussed the mechanisms behind the formation of early reservoirs in the high-frequency sequence framework and proposed that the high-frequency sequences controlled the order of lithofacies development and the syngenetic karstification,and thus controlled the development of different genetic types of reservoirs.