藏北伦坡拉盆地下第三系储集层主要发育于始新统牛堡组二段至渐新统丁青湖一段，储集层所经历的成岩作用十分复杂，现象十分丰富。详尽描述了压实、４期溶蚀、３期胶结、交代、破裂等成岩作用的过程及特征，确认区内储集层所经历的主要成岩环境为：湖底／河流→大陆地表→埋藏→大陆地表。孔隙演化研究表明，区内储集层的原始孔隙度均较高，经过一系列成岩作用后，原生孔隙所剩无几；溶蚀作用特别是深埋溶蚀作用形成的各类溶孔，是进油期的主要孔隙，孔隙度一般为５％～１５％，部分充填烃类。照片１０图５参４（邹冬平摘） The lower Tertiary reservoirs in the Lunpola Basin in northern Tibet mainly develop in the second member of Neoproterozoic Niubeizu Formation and Dingqing Lake, a part of the Oligocene Dingqing Lake. The diagenesis experienced by the reservoir is very complicated and the phenomenon is very rich. The processes and characteristics of diagenesis, such as compaction, stage 4 dissolution, stage 3 cementation, replacement and rupture, are described in detail. The main diagenetic environments experienced by the reservoirs in the area are: lake bottom / river → land surface → land surface → land surface . The study of pore evolution shows that the original porosity of the reservoirs in the area is relatively high. After a series of diagenesis, the primary pores are scarce; the dissolution, especially the dissolution of various types of dissolved pores formed by deep-buried dissolution, The main porosity, porosity is generally 5% to 15%, partially filled with hydrocarbons. Photo 10 Figure 5 Reference 4 (Zou Dongping pick)