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本文以洒西盆地为例,着重讨论了变形盆地沉积相中的几个问题:1.原始沉积厚度的恢复;2.盆地内部原地系统和外来系统沉积体系的区别;3.盆地原始沉积边界的恢复。最后指出,这类盆地油气二次勘探的主要方向是生储油层系被掩覆的前缘推覆带和盆地内部该层系重叠的地带。
This paper takes Xixi Basin as an example and discusses several problems in the sedimentary facies of the deformed basins: 1. The restoration of the original sedimentary thickness; 2. The difference between the in-situ system and the exogenous system sedimentary system in the basin; 3. The original sedimentary boundary of the basin Recovery. Finally, it is pointed out that the main exploration direction of oil and gas in this kind of basin is the frontal nappe belt in which the oil and gas reservoir system is covered and the overlapping zone in the basin.