塔里木盆地塔中地区良里塔格组沉积相研究

摘要

The Ordovician Lianglitag Formation is located in the central uplift of the Tarim Basin,and the Upper Ordovician Lianglitag Formation is a stable carbonate platform.The margin of the platform is controlled by Tazhong No.1 fault zone.The reef and beach facies are the main reservoirs of carbonate reservoirs in the Tazhong area. Carbonatite sedimentary microfacies is the basis of the carbonate sedimentary study.Through the beach facies, sedimentary microfacies and sedimentary microfacies,the sedimentary environment is explained and the fine facies model of the study area is also established.The controlling factors of reservoir development are the carbonate sedimentary reservoir areas of the hot spots.Therefore,it is very important to analyze sedimentary facies of Ordovician Lianglitage Formation.%奥陶系良里塔格组位于塔里木盆地塔中地区中央隆起带，上奥陶统良里塔格组主要以碳酸盐岩台地沉积为主，其台地的边缘受塔中Ⅰ号断裂带所控制，发育的礁、滩相是塔中地区碳酸盐岩油气藏的主力储层，而碳酸盐岩沉积微相分析是碳酸盐岩沉积研究的基础。通过分析滩相、障积礁、灰泥丘、藻席以及潮下低能带这5种沉积微相，识别出沉积旋回，解释了沉积环境，并建立了研究区的精细相模式，进而探讨了当前碳酸盐岩沉积储层研究领域的热点———储层发育的控制因素。因此，对奥陶系良里塔格组进行沉积相分析非常重要。