层序地层学在油储勘查研究中的新思维

当前层序地层学面临的问题是不能充分证明所研究的层序具有等时性和可对比性。层序界面和体系域与固，液体矿产的成矿作用存在内在的，有机的成因联系。最大海泛面以上各体系 叠置可构成自生的生储盖组合；具有古喀斯特作用的高水位体系域的溶蚀孔洞和其上的暴露面为成矿流体的运移提供了通道，因此它们不仅是层控型金属矿产的储矿空间，而且也是最有利的储油构造的地层圈闭。

A New Thought of Sequence Stratigraphy Used in Reservoir Survey

The study of sequence stratigraphy at present still faces a question whether the study sequences are isochronous and cor- relative.The geological practice has proven that there is an in- ner original relation between sequence boundaries,system tracts and mineralization of solid or liquid minerals.The system tracts stacking up above maximum flooding surface may as- semble an authigenic source-reservoir-caprock assemblage. The dissolution pore or cave in highstand system tract made by paleo-karstification and exposed surface above it provide a way of migration for solid or liquid mineralizing fluids to pass through,which is not only a space for stratabound ore housing but also the most favorable accumulation structure of strati- graphic trap.This kind of cause and effect coupling relation with mineralization brings to light the real value of sequence stratigraphy,also gives a new challenge to sequence stratig- raphy.The two points PUt forward in the paper,multisolution in application of sequence stratigraphy and misunderstanding in study;and the relation between sequence stratigraphy and mineralizing fluids,hydrocarbon-generating and migration,are of great value for us to pay more attention.