塔中45井萤石成因与油气成藏  

Fluorite Origin and Petroleum Reservoir in Well TZ-45 in Tarim Basin

作　　者：张兴阳[1] 顾家裕[1] 罗平[1] 

机构地区：[1]中国石油石油勘探开发科学研究院实验研究中心,北京100083

出　　处：《新疆石油地质》2004年第5期479-482,共4页Xinjiang Petroleum Geology

基　　金：国家973重点研究发展规划项目资助(编号:G1999043311)

摘　　要：塔里木盆地塔中45井揭示了以奥陶系萤石发育段为储集层的特殊油气藏类型。通过对萤石发育段的岩石学、地球化学、储集层地质学及成矿地质学的综合研究认为,萤石为低温热液成因,萤石成因与二叠纪火山活动无必然联系,而与喜马拉雅运动期盆地流体的活动有关;此类盆地流体为成矿、成藏和埋藏岩溶流体的统一体,萤石成矿、油气成藏与埋藏岩溶作用之间存在伴生关系。结合萤石的成矿条件,预测成矿流体来源的上游方向具有好的储集层发育。A special type of petroleum reservoir characterized by Ordovician fluorite interval is found in TZ-45 Well in Tarim basin. This paper presents the researches on the fluorite-developed interval in lithology, geochemistry, reservoir geology and mineralizing geology. The comprehensive study shows that the fluorite was genetic under the epithermal environment without inevitable relations to Permian volcanic activities, but certain relations to the basinal fluid movement during the Himalayan orogeny. Since the basinal fluid was associated fluid for mineralization, petroleum accumulation and buried karstification, there exited the associated relations among the fluorite mineralization, petroleum accumulation and buried karstification. It is predicted that the upstream could be of developed reservoirs originated with the mineralizing fluid under the conditions of the fluorite mineralization.

关 键 词：塔里木盆地 奥陶系 萤石 储集层 油气藏 

分 类 号：TE122.2[石油与天然气工程—油气勘探]