哈拉哈塘地区良里塔格组沉积特征分析

综合运用录井、测井、岩心、薄片及地震等资料，对塔里木盆地哈拉哈塘地区上奥陶统良里塔格组的岩石类型、沉积特征及台缘滩展布进行了研究。结果表明：良里塔格组沉积时期，研究区主体处于碳酸盐岩台地边缘相带，平面上由北向南依次发育台缘洼地、台缘滩、台地前缘斜坡及盆地相（亚相），沉积物以 瘤状灰岩夹砂屑灰岩为主。其中，台缘滩亚相砂屑灰岩呈东西向展布，厚度较大，横向连续性较好，可作为该区有利的储层。

Sedimentary characteristics of the Upper Ordovician Lianglitage Formation in Halahatang area

Based on core observation,thin section analysis,logging and seismic data analysis,we studied the rock types,sedimentary characteristics and reef flat distribution of the Upper Ordovician Lianglitage Formation in Halahatang area.The result shows that during the depositional stage of Lianglitage Formation,the sediments are mainly of nodular limestones and lamellar calcarenites,and the depositional environment is marginal facies in carbonate platform.In the plane,it successively developed basin facies,platform foreslope,reef flat on the edge of platform and platform margin depression from south to north.The reef flat on the edge of platform is distributed in the direction of EW,with great thickness and fine lateral continuity.The calcarenites of reef flat facies on the edge of platform can act as the favorable reservoir.