【摘要】 塔里木盆地是多旋回叠合盆地,主要烃源岩为奥陶系和寒武系,其古生界盆地经历过海西早期、海西晚期和燕山晚期等三期主要构造运动,现今具典型的残余盆地性质。开发了三维油气盆地定量描述和动态模拟软件系统,对塔里木盆地进行了全面研究。三期构造运动所剥蚀的(古生界)排油气损失量之和约占累积排油气量的12%左右。其中以海西早期剥蚀的排油气损失量最大,达263×10~8t;奥陶系排油气损失最严重,其次为寒武系。塔里木盆地的油气资源潜量仍十分巨大,油127×10~8t,气68×10~8t 油当量。含四个石油资源潜量富集区,按强度依次为满加尔蚴陷、唐古巴斯坳陷、阿瓦提坳陷和巴楚隆起;天然气资源潜量富集区三个,依次为满加尔坳陷、唐古巴斯坳陷和阿瓦提坳陷。且末北部有一个从石炭纪以来长期继承性发育的鼻状隆起带,是满加尔坳陷的油气运移指向地区,有可能形成大型复合油气田。更多还原

【Abstract】 Tarim Basin is a multi-cycle superposed basin.Ordovician and Cambri- an are the major source rocks.The Paleozoic basin having undergone three tectonic movements of Early Hercynian,Late Hercynian and Late Yanshan is a typical remnant basin.It is considered that a large amount of oil-gas lost in above three tectonic movements accounts for some 12% of total expulsion of hydrocarbon based on 3D quantitative oil- gas basin description and dynamic simulation.The largest loss of oil- gas is in Early Hercynian up to 26.3×10~9t.Vertically,oil-gas loss in Ordovician is the biggest,followed by Cambrian.The quality of source rocks depends on if it has been affected by Early Hercynian because the later structural movements have less effect on it.However,the basin is still rich in oil-gas resource.It has statistically 12.7×10~9t of oil, 6.8×10~9t of gas,four oil accumulations,three gas accumulations as well.Besides that,since Carboniferous an inherited and developed nose uplift to north of Qiemo is a direction of oil-gas migration in Man- ja’er depression,which may be possible to form a large scale of com- posite oil-gas pool.更多还原