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辽河裂谷盆地在漫长的盆地演化和复杂的地质构造条件下形成了具有丰富油气资源潜力的下第三系一古潜山含油气系统,尤以西部凹陷最为典型,其基底具有多种潜山圈闭类型,下第三系具有理想的生储盖组合和良好的保存条件。下第三系陆相烃源岩主要分布于西部凹陷中央深陷带的盘山、清水等洼陷中,而西部斜坡带的曙光、杜家台等古潜山带是其油气主要聚集区。通过含油气系统分析,认为含油气系统的持续时间为太古代至新生代早第三纪末,保存时间为晚第三纪,关键时刻为早第三纪末。靠近生油中心附近的诸潜山带为今后油气勘探的主要方向。
In the Liaohe rift basin, the Lower Tertiary-one buried hill oil-bearing system with abundant oil and gas resources potentiality has been formed under the long basin evolution and complicated geological conditions. Especially in the western sag, the most typical depression has many buried hills Trap type, the lower Tertiary system with the ideal combination of storage and cover and good preservation conditions. The Lower Tertiary continental facies source rocks are mainly distributed in the Panshan, Qingshui and other depressions in the central depression of the western depression, while the ancient buried hills such as Dawning and Dujiatai in the western slope belt are the major oil and gas accumulation areas. Based on the analysis of petroleum system, the duration of petroleum-bearing system is considered to be from the Archean to the Early Cenozoic and the preservation time is late Tertiary. The key time is early Tertiary. Close to the oil center near the buried hill for the future of the main direction of oil and gas exploration.