西藏伦坡拉盆地下第三系储集层分为孔隙性储集层和裂缝性储集层两大类。孔隙性储集层为盆地内最主要的储集层类型，以扇三角洲平原相和水下分流河道相储集物性最好，次为滩坝相；裂缝性储集层平面分布受控于断裂系统和局部构造，纵向上主要发育在牛堡组三段和牛堡组二段上亚段。该区储集层物性受控于沉积环境和成岩作用，自丁青湖一段到牛堡组一段，成岩作用相对愈强，储集物性相对愈差，较好的储集层主要分布在盆地南、北构造带，但由于受后期强烈改造，其有效性变差，中央凹陷带物性总体较差，但局部相对较好，尤其是扇三角洲发育区。该区裂缝性油气藏的勘探应以牛二段中亚段为主要目的层。图１参４（邹冬平摘） The lower Tertiary reservoirs of the Lunpola Basin in Tibet are divided into two major types: the porous reservoirs and the fractured reservoirs. Porous reservoirs are the most important reservoirs in the basin, with the best reservoir facies in fan-delta plain and sub-distributary channel facies, and secondly in beach-dam facies. The distribution of fractured reservoirs is controlled by faults System and local structure, mainly in the longitudinal development of the third section of the Niubebao Group and the second section of the Niubebao Group. The physical properties of the reservoir are controlled by sedimentary environment and diagenesis. From the section of Dingqing Lake to the section of Niubebao Formation, the diagenesis is relatively stronger and the reservoir properties are poorer. The better reservoirs are mainly distributed in the south of the basin However, due to the strong retrofit of the later period, its effectiveness is poor. The central depression is generally poor in physical properties, but its location is relatively good, especially in the fan delta development area. The exploration of fractured reservoirs in this area should take the Middle Section of Niu Sec section as the main target. Figure 1 Senate 4 (Zou Dongping pick)