轮南地区下奥陶统碳酸盐岩主要的油气储集空间为裂缝、溶洞及晶间孔,组成裂缝型、裂缝—溶洞型及孔缝型3类储集岩层。不同的储集空间及不同类型的储层具有明显不同的测井响应特征。本文在综合钻井、取心资料及室内分析,测井资料的基础上,建立了区内碳酸盐岩储层识别与划分的标准,并对Ln1,Ln8井进行了储层划分与评价。 The main oil and gas reservoirs of the Lower Ordovician carbonate rocks in Lunnan area are fractures, karst caves and intergranular pores, which are composed of three types of reservoir rocks: fissure type, fractured-karst type and pore type. Different reservoir spaces and different types of reservoirs have significantly different logging response characteristics. Based on comprehensive drilling, coring data, indoor analysis and well logging data, this paper establishes the criteria for identifying and classifying carbonate reservoirs in the area, and divides and evaluates the Ln1 and Ln8 wells.