Yanqi basin is stituated between tarim basin and tarpan - harmi basin . its petrolenm system underwent the formation and destruction during jurassic - cretaceous , the activation and reconstruction during tertiary - quaternary 焉耆盆地位于塔里木盆地和吐哈盆地之间，其含油气系统经历了侏罗纪-白垩纪的形成与破坏阶段和第三纪-第四纪的活化与再建阶段。
