塔里木盆地塔中低凸起奥陶纪油气成藏体系  

Ordovician Petroleum Accumulation System in Tazhong Low Uplift of Tarim Basin

作　　者：刘克奇[1] 金之钧[2] 

机构地区：[1]石油大学盆地与油藏研究中心,北京102249 [2]中国石油化工股份有限公司石油勘探开发研究院,北京100083

出　　处：《地球科学（中国地质大学学报）》2004年第4期489-494,共6页Earth Science-Journal of China University of Geosciences

基　　金：国家重点基础研究发展规划"973"项目 (G19990 43 3 0 9) ;中国石油股份公司"九五"重点攻关项目 (No .960 0 0 7) .

摘　　要：国外含油气系统的概念和方法在国内的含油气盆地研究中的应用存在着局限 ,应用油气成藏体系的理论方法对塔中低凸起奥陶系油气成藏过程进行了分析 .塔中低凸起奥陶纪油气成藏体系的源岩为寒武系及下奥陶统烃源岩 ;满加尔坳陷中的砂体和不整合面是油气侧向运移的输导体 ,同时深部断裂是油气垂向运移的输导体 ;圈闭类型主要为古隆起背景上的地层型圈闭和构造型圈闭 .塔中I号断裂构造带是最为有利的油气聚集区 ,塔中北坡次之 ,中央断垒带最差 .The concepts and methods of petroleum system are applied to analyze the Ordovician petroleum accumulation process in Tazhong low uplift of central Tarim basin. Hydrocarbon in the Ordovician petroleum accumulation system originated from the Cambrian and Lower Ordovician source rocks. Sand beds and unconformities in the Manjiaer depression are taken as the pathway of lateral petroleum migration and deep faults as the pathway of vertical petroleum migration. Main traps are composed of stratigraphic and structural typed traps developed in palaeo structural high. The results indicate that the area in the No. 1 fault in Tazhong structure is inferred to be the most favorable zone of petroleum accumulation, and next, the northern slope of Tazhong structure, and the worst one, the middle fault-horst zone. Of them, the No. 1 fault zone in Tazhong structure would be taken as the favorable prospect of next exploration.

关 键 词：塔中低凸起 奥陶纪 油气成藏体系 

分 类 号：P618.1[天文地球—矿床学]