以薄片鉴定、铸体分析、地震特殊处理和分析测试为基础 ,研究了辽河盆地东部凸起奥陶系储层的岩石学特征、储集空间类型、孔喉结构和物性特征 ,并进一步探讨了影响控制储层的有利因素和不利因素。白云石化作用、埋藏期溶解作用和表生期岩溶作用是改善储层的主要因素 ,而表生期岩溶作用对储层改造剧烈 ,又是其中最重要的一种影响因素 ;压实作用和胶结作用则是对储层破坏的两大主要因素。研究表明 ,奥陶系风化壳储层将是今后勘探的重点目的层 Based on the identification of thin slices, the analysis of castings, the special treatment of seismic and the analysis and testing, the petrologic characteristics, reservoir space types, pore-throat structure and physical properties of raised Ordovician reservoirs in the east of Liaohe Basin are studied. Affect the control of the reservoir of favorable and unfavorable factors. Dolomitization, burial dissolution and epigenetic karstification are the main factors for reservoir improvement. However, epikarst karstification is one of the most important factors affecting the reservoir reforming. Compaction and cementation The role of the two main factors is the destruction of the reservoir. Research shows that the Ordovician weathering crust reservoir will be the key target for future exploration