The Northern Uplift of the Tarim Basin had undergone a long-term compressional uplifting and erosion since the Early Paleozoic,and also integrated with the upwarp of the Cambrian gypsum formation,thus forming two basic types of carbonate rock traps,namely,weathered-crust buried hills and insider anticline traps.The northern uplift,bounded by the Paleozoic Manjiaer marine sag in the south and Mesozoic and Cenozoic Kuqa depression in the north,possesses the conditions that arrest hydrocarbon from both marine and terrestrial sources,and experienced three hydrocarbon accumulation phases in the Hercynian Yanshan and Himalayan.The main reserve spaces are cavities and cracks.Two regional caprocks,Upper-and Middle-Carboniferous mudstone and Cretaceous Kapushaliang Group mudstone play the most important roles in the formation of hydrocarbon reservoir.Unconformity surface and fracture are the two key factors controlling oil/gas reservoir in the north uplift:the former not only controls development and distribution of hydrocarbon accumulation but provides the preponderant pathway on lateral migration;and the latter resulted in the formation of broken zone,further improved reservoir performance.Meanwhile,fracture is the preponderant pathway on vertical migration of hydrocarbon.