塔里木盆地塔中古隆起控油气模式与有利区预测  

A model for controlling hydrocarbon and predicting favorable exploration zones of the Tazhong palaeouplift in Tarim Basin,NW China

作　　者：庞雄奇[1,2] 周新源[3] 李卓[1,2] 王招明[3] 姜振学[1,2] 

机构地区：[1]中国石油大学油气资源与探测国家重点实验室,北京102249 [2]中国石油大学盆地与油藏研究中心,北京102249 [3]中国石油塔里木油田公司,新疆库尔勒841000

出　　处：《石油学报》2011年第2期189-198,共10页Acta Petrolei Sinica

基　　金：国家重点基础研究发展规划(973)项目(2006CB202308)资助

摘　　要：通过对塔里木盆地塔中古隆起形成演化的恢复及古隆起不同部位油气藏特征的综合研究,明确了塔中古隆起经历了晚加里东期、晚海西期和喜山期3期构造演化过程;建立了塔中古隆起控藏模式,即在古隆起及其周边发育两类8种油气藏类型,其中在古隆起"山外",志留系和石炭系背斜型、地层型、岩性型和断块型油气藏分布于古隆起顶部及斜坡上部,在古隆起"山内",寒武系和奥陶系不整合型油气藏分布于古隆起顶部,礁滩体型、溶洞型和裂缝型油气藏分布于古隆起斜坡下部;阐明了古隆起控油气作用原理,即古隆起发育多种类型圈闭,具有多种输导体系,是浮力作用下油气运聚的有利指向;预测了塔中古隆起有利成藏区,其中塔中主垒带是寻找山外断块类、背斜类油气藏和山内不整合型油气藏的最有利区域,塔中10号带是寻找山外地层类、背斜类油气藏和山内溶洞型油气藏的有利区域,塔中Ⅰ号断裂带是寻找山外岩性类油气藏和山内裂缝型、溶洞型油气藏的有利区域。In order to deeply research a model for both controlling hydrocarbons and predicting favorable exploration zones of the Tazhong palaeouplift in Tarim Basin,this paper focused on the tectonic evolution of the Tazhong palaeouplift and the distribution of different reservoirs.A three-epoch tectonic evolution was identified for the Tazhong palaeouplift,i.e the Late Caledonian,Late Hercynian and Himalayan,and a reservoir controlling model for two classes（inner or outside of buried hill） and eight types was established for the Tazhong palaeouplift.Outside the Tazhong palaeouplift buried hills,Carboniferous and Silurian clastic anticline reservoirs,stratigraphic or lithologic reservoirs and fault-block reservoirs occurred at top parts of the palaeouplift and slope,while within the palaeouplift buried hills,Ordovician and Cambrian carbonate weathering-crust reservoirs occurred at the top,reef-flat reservoirs in the lateral margin,and karst and fractured reservoirs at the lower part of the palaeouplift.The mechanism of the reservoir control by the palaeouplift,which contains various traps and carrier systems indicating favorable direction of hydrocarbon migration,was discussed.The research predicted that the Tazhong main horst zone was the most favorable exploration area for fault-block reservoirs,anticline reservoirs and carbonate weathering-crust reservoirs,the Tazhong No.10 structure zone was the favorable exploration area for stratigraphic reservoirs,anticline reservoirs and carbonate karst reservoirs,and the Tazhong No.1 slope break zone was the favorable exploration area for lithologic reservoirs,carbonate karst reservoirs and buried-hill inside fractured reservoirs.

关 键 词：塔里木盆地 塔中古隆起 构造演化 控藏模式 控油气机理 有利区预测 

分 类 号：TE112[石油与天然气工程—油气勘探]