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本文依据综合标志对松辽盆地研究层段古地理环境进行分析,认为盆地存在着八大沉积类型和五大沉积体系。从各体系时空演化确定古湖岸线和相带的分布。分析盆地油气分布,确认已发现油田多分布在沉积过渡带,即三角洲及滨岸带;两次湖进所夹湖退序列是最好的生、储、盖组合;河道及河口沙坝砂、席状砂、滨湖砂及生物碎屑层是主要的储集岩。
Based on the comprehensive signs, this paper analyzes the palaeogeographical environment of the research intervals in the Songliao Basin and holds that there are eight sedimentary types and five sedimentary systems in the basin. Determine the distribution of the ancient lake shoreline and facies from the spatiotemporal evolution of each system. The distribution of oil and gas in the basin is analyzed to confirm that the oil fields have been found to be mostly distributed in the sedimentary transitional zone, that is, the delta and the coastal zone. The two sequences of lake subduction are the best combination of reservoirs and reservoirs, Sand-like sand, lake sand and biological debris layer is the main reservoir rock.