以单井沉积相分析为基础，结合地表露头资料、岩心观察、岩屑录井及薄片鉴定分析，确定出塔里木盆地东部地区寒武系—奥陶系沉积相类型为深海相、半深海—等深积岩相、浅海相和碳酸盐岩台地相，并进一步划分出若干亚相和微相。在沉积微相分析的基础上，研究了早寒武世—中奥陶世各时期的沉积相模式、平面展布特征和演化规律，认为早寒武世主要于东部发育台盆模式，中晚寒武世台盆模式更为明显，持续至早—中奥陶世该区中部发育深水坳拉槽沉积区，西部和东部则为台地相区及过渡带，为典型的三分结构。在台地与深海盆的边缘带发育礁滩储集体，有利于储层的发育。成岩作用类型复杂多样，其中以破坏性成岩作用占主导地位。

On the basis of sedimentary facies of single well, seimic data, as well as surface outcrop data，core observation，cutting logging and thin section analysis, the sedimentary facies in eastern Tarim Basin are defined, including abyssal facie, bathyal-contourite drift facies, near-shore deposits and carbonate platform. Several sub-facies and micro-facies are also recognized. Based on analysis of sedimentary microfacies, the sedimentary models, distribution and evolution in Early Cambrian-Middle Ordovician are analyzed. It is believed that plateau- basin model mainly developed in Early Cambrian in the east, and it is more obvious in Middle-Late Cambrian. Until Early-Middle Ordovician, the sedimentary facies in the study area is of typical trisection units, which are deep water aulacogen in middle part, carbonate platform and slope facies in the west and east. At the edge zone of platform and deep sea basin, reef flat reservoir developed, which is favorable for reservoir development. There also developed many types of diagenesis, and the destructive diagenesis is dominated one.