白垩纪昂拉仁错是冈底斯岛弧后的前陆盆地,盆地的发展经历了一个完整的海进一海退沉积旋回,并在沉积上表现出由北向南沉积层序逐渐增高、厚度变薄的趋势;在纵向上有多套有利的生储盖组合,发育有背斜圈闭、断块圈闭、岩性圈闭、火山岩圈闭多种类型.盆地的后期改造经历了晚燕山和早喜山运动长期近南北向挤压,形成南北对冲的构造格局,其中晚燕山运动有利于油气的运移和聚集,早喜山运动对油气具破坏性.该盆地具有和日本海盆地、台湾台西盆地基本相似的地质发展史和油气地质条件. The Cretaceous Anlairen fault is a foreland basin after Gangdese arc. The basin experienced a complete seaward-receding sedimentary cycle and shows a gradually increasing depositional sequence from north to south with a thickness Thinning trend. There are several sets of favorable reservoirs and cap assemblages in the longitudinal direction, with development of anticline traps, block traps, lithologic traps and various types of volcanic traps. And the Early Early Himalayan movement was squeezed long-term near north-south direction to form a structural pattern of north-south hedging. The Late Yanshanian movement is favorable for the migration and accumulation of oil and gas, and the Early Early Himalayan movement is destructive to oil and gas. Taiwan Taixi Basin basic similar geological history and oil and gas geological conditions.