准噶尔盆地乌伦古坳陷石油地质特征及勘探方向  

PETROLEUM GEOLOGIC CHARACTERISTICS AND EXPLORATION STRATEGY IN WULUNGU DEPRESSION OF JUNGGAR BASIN

作　　者：陈占坤[1] 谢国军[1] 张福顺[1] 

机构地区：[1]中国石化石油勘探开发研究院,北京100083

出　　处：《新疆地质》2010年第1期61-64,共4页Xinjiang Geology

基　　金：中国石油化工股份有限公司海相油气勘探前瞻性(G8804-07-ZS-0012)项目资助

摘　　要：准噶尔盆地北部乌伦古坳陷地层主要由石炭系、三叠系、侏罗系及白垩系组成.研究区分别在三叠系、侏罗系、石炭系发育3套烃源岩.石炭系火山岩储层和侏罗系碎屑岩储层为本区主要勘探目的层,白垩系和三叠系发育的厚层泥岩为本区两套区域性盖层.三叠、侏罗系烃源岩于侏罗系末期开始排烃,石炭系烃源岩于三叠纪末进入生烃门限.断层和不整合面共同构成该区油气运移的主要通道,边缘深大断裂带附近及石炭系不整合面附近,是油气勘探的主要方向.The stratum in Wulungu depression was formed by Carboniferous,Triassic,Jurassic and Cretaceous.Three source rocks were developed in Jurassic, Triassic and Carboniferous. Volcanic rock in Carboniferous and clastic rock in Jurassic are the main prospecting targets.Thick mudstones developed in Cretaceous and Triassic are two regional cap rocks in this area. Source rocks in Jurassic and Triassic began to generate hydrocarbons in the end of Jurassic, and the source rock in Carboniferous entered the ＂oil windows＂ in the end of Triassic.The faults and unconformities are the favorable migration pathways in this area.Traps which were near the deep fault belt and the unconformity of Cretaceous are the primary target for oil and gas exploration.

关 键 词：乌伦古坳陷 烃源岩 石油地质 不整合 

分 类 号：P618.13[天文地球—矿床学]