通过我们自主研发的盆地模拟软件恢复了莫里青断陷从始新世到现今地层的有机质演化史、生烃史、排烃史、排替压力史以及油气成藏史.结果表明,在永吉组沉积时期双阳组烃源岩成熟,开始生烃,其中双一段Ro>0.7％,达到排烃门限开始排烃,孔隙以次生孔为主,盖层封闭性好,油气藏开始形成.万昌组沉积时期,双阳组烃源岩排烃与构造定型期匹配良好,油气藏大规模形成.从新近纪开始,构造活动基本停止,油气藏保存良好至今.%In this paper, the evolutionary history of organic matter, hydrocarbon generation history, hydrocarbon displacement history, pressure history and hydrocarbon accumulation history of the Moliqing sag from the Eocene to the present stratum are all simulated in our own developed basin simulation software.The results show that the organic matter in Shuangyang Formation is mature.It begins to generate hydrocarbon during the deposition period.The Yongji Formation, the organic of the shuangyi formation'Ro> 0.7 which reaches the expulsion threshold;including its pore are mainly secondary holes.Hydrocarbon reservoirs began to form.During the deposition period of the Wanchang Formation, the hydrocarbon expulsion of the source rocks of Shuangyang Formation is well matched with the structural stage, and the hydrocarbon reservoirs are formed in large scale.Since the tectogenetic movement in Neogene was basically stopped, the hydrocarbon reservoirs have been well preserved.
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