层序成因格架中的储集体分布--以西南地区二叠系为例

西南地区二叠系层序成因格架及储集体分布关系的研究表明，不同成因沉积盆地的层序内部构型及成因格架不同，其中储集体特征及分布亦各异，总体而言，该区二叠系层序格架中的有利储集体主要包括：（１）低水位体系域中的盆底－斜坡扇，浪控三角洲砂体，河谷充填－进积复合砂体，混屑浊积岩、冲积扇砂体，丘礁组合；（２）海侵体系域中的浅滩及障壁滩砂体、河口湾砂体，潮控三角洲砂体，扇三角洲砂体，丘礁滩组合，火山碎屑浊积岩、浊

Sequence Genetic Framework and Distribution of Favorable Reservoir in Permian System in Southwest China

A research on the relationship between sequence genetic framework and reservoir distribution of the Permian system in Southwest China shows that the sequence framework of distinct genetic basins and their reservoir characteristics and distribution are quite different In the general, favorable reservoirs within the Permian sequence framework in Southwest China include mainly:(1)basin floor and slope fans, delta front, alluvial fan, valley fill, progradation complex, shoal bioherm reef complex, calcareous and mixed clastic turbidites in LST; (2)barrier beach, shoal, estuary, tide influenced delta, fan delta, turbidity fan, lag sediment, bioherm reef complex, pyroclastic turbidite in TST; (3)river and wave dominated delta, alluvial channel fan, fan delta, turbidity fan, terrigeneous and carbonate shoals, bioherm reef complex, calcareous clastic beach bioherm reef complex, calcareous clastic turbidite, and dolostone in HST; and (4)karst reservoir dominated by sequence boundary surface including overlying eluvial breccia complex and underlying karstic breccia system