中东-中亚地区重点盆地油气地质特征及资源评价

根据区域地质-盆地-含油气系统-成藏组合的研究思路，总结了不同类型盆地油气成藏特征和富集规律，评价重点盆地资源潜力。研究认为，中东-中亚地区经历了地体群南离北聚的板块构造演化过程，发育了克拉通盆地、裂谷盆地、被动大陆边缘盆地和前陆盆地等4类主要的原型盆地。平面上，油气主要分布于阿拉伯板块西北部中生代古被动大陆边缘和东欧地台东南缘等稳定构造区的边缘，以及扎格罗斯褶皱带和斯基夫-图兰构造带等活动构造区相对稳定的构造带；层系上，主要分布在石炭系、二叠系、侏罗系、白垩系和新近系；发育碳酸盐岩和碎屑岩两大类储集层，以前者为主，已发现储量占80.45%。在地质综合评价基础上，以成藏组合为评价单元，完成了8个重点盆地71个成藏组合待发现资源量的定量计算评价，优选了Ⅰ，Ⅱ类有利成藏组合。

Petroleum geology and resources assessment of major basins in Middle East and Central Asia

Through the study of regional geology,basin geology,petroleum system,play,hydrocarbon accumulation characteristics was delineated in various type of basins,and resources potential in major basins were evaluated.The plates of the Middle East and Central Asia experienced a divergent tectonic evolution in the south and a convergent evolution in the north.Four prototype basins are recognized:Cratonic basin,rift basin,passive margin basin and foreland basin.On the plane view,oil and gas are distributed in the Mesozoic paleo-passive margin in the northwest of Arabian plate,the southeastern margin of Eastern Europe platform,and the relatively stable areas in tectonically active zones such as the Zagros fold belt and Skiff-Turan tectonic belt.Stratigraphically,petroleum reserves are largely confined to five reservoir intervals:Carboniferous,Permian,Jurassic,Cretaceous and Neogene.Carbonate and clastic rocks contain the bulk of the petroleum reserves,with the former accounting for 80.45%.Based on the integrated geological assessment,this paper evaluates resources potential of 71 plays in 8 major basins.By taking the "play" as the assessment unit,and then type Ⅰ and Ⅱ favorable accumulation areas are determined in the Middle East and Central Asia region.