塔里木古生代海相大油气田形成条件及勘探方向

Forming Conditions and Exploration Prospecting of Paleozoic Marine Giant Fields in Tarim Basin

列举了塔里木盆地1984年以来油气勘探的一些重大进展,描述了塔里木原型盆地的特征以及加里东中晚期、海西早期、海西末期三次构造运动对盆地产生的形变改造作用,对塔里木盆地的构造变形区、构造变形层作了划分,并从形成大油气田的基本地质条件出发,阐述了塔里木盆地古生代海相地层具有多套烃源层和多种成油组合,并对大型古隆起、斜坡、区域性不整合面和断裂在塔里木油气勘探中的指向意义作了较深入的分析,认为它们是寻找大油气田的有利地质条件。

Give some examples of significant progress in petroleum ex- ploration in marine strata in Tarim Basin.It is described to the characteristics of prototypal Tarim Basin and the deformation and reconstruction of the basin that was resulted from the mid- die-late Caledonian,early Hercynian and end Hercynian oroge- nies.The tectonic deformation areas and strata in the basin are classified.It is pointed that there are multi-sets of source rocks and several hydrocarbon reservoir assemblages in the Paleozoic marine strata according to the basic geological con- ditions of forming giant fields.The geological condition,explo- ration significances and prospecting of large paleo-uplifts,the paleoclinoform,the regional unconformity interface and fracture zone are discussed.