伊洛瓦底盆地始新统沉积相及其油气勘探有利区域

Irrawaddy Basin Eocene Sedimentary Facies and Favorable Hydrocarbon Exploration Area

将伊洛瓦底盆地始新统沉积相划分为冲积扇陆相沉积相、浪控三角洲沉积相、河口湾海陆过渡沉积相和无障壁海岸等海相沉积相。在此基础上,了解始新统各地层的沉积相分布情况和整个沉积相演化过程,总结该盆地始新统沉积相的主要沉积模式——浅海陆棚沉积模式和冲积扇—浪控三角洲沉积模式。最后,综合评价该盆地始新统有利勘探区域。

The article divides the facies into alluvial fan continental facies,wave-controlled delta facies,estuary paralic facies and non-barrier coast facies,which is marine facies.Based on it,the facies distribution and evolution of each formation on Eocene Series is clarified,and the primary deposition pattern for facies of the petroliferous basin is summarized as the shallow marine shelf and wave-controlled delta-alluvial deposition pattern.Finally,the advantaged exploration region on Eocene Series in the basin can be evaluated synthetically.