黔南地区上石炭统发育一套巨厚层碳酸盐岩沉积，其具有分布面积广、地层发育完整、沉积厚度大等特点。然而，该地区油气勘探程度较低，做好其碳酸盐岩储层特征研究对黔南海相地层资源潜力和前景评价具有重要意义。文中在野外实测资料、室内铸体薄片鉴定、扫描电镜鉴定及储层物性测试的基础上，分析了研究区大埔组各种岩性的储层特征。大埔组岩性主要为生屑灰岩、微晶灰岩、云质灰岩、（含）灰质云岩、白云岩；储集空间类型主要为次生孔隙，原生孔隙相对不发育；储层孔隙结构复杂，整体属低孔、低渗储层。储层发育的控制因素主要为岩性、成岩作用及构造裂缝，沉积相对储层发育控制不明显。隐伏的构造裂缝发育带及埋藏白云石化带可作为下一步勘探工作的重点。

The huge-thick carbonate rock developed in Upper Carboniferous in southern Guizhou, and it is characterized bywide distribution, integrated strata and huge sediment thickness. But its exploration degree is low. So doing a good job in the research of carbonate reservoir characteristics has significances to the evaluation of resource potentiality and prospect ofmarine strata in southern Guizhou. Based on field actual measurement data, cast slice, scanning electronic microscope and reservoir property test, the reservoir characteristics of different lithologies of Upper Carboniferous Dapu Formation are analyzed. The lithologies of Dapu Formation mainly are  lastic limestone, microcry-stalline limestone, dolomitic limestone, limy dolomite and dolomite. The main reservoir space type is secondary pore, and the primary pore does not develop. The reservoir pore structure is complicated, belonging to low-porosity and low-permeability reservoirs. The controlling factors of reservoir development mainly contain lithology, diagenesis and structural fracture, except for sedimentary facies. The zone of concealed structural fracture and burial dolomitization may become the further important exploration areas.