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首次在南昌凹陷钻探的鄱参1井揭露了上三叠统安源组烃源岩，否定了该区没有晚三叠世沉积的传统认识，预示了南昌凹陷存在上三叠统的勘探新领域。通过对鄱参1井区地质结构的分析和综合研究，提出南昌凹陷是从晚三叠世以来受层滑倾滑构造控制的一个独立层块构造单元，构造较周边简单。上三叠统烃源岩具有多种母质类型和晚期生烃能力，和上覆白垩系共同构成重建型油气保存单元，有进一步勘探的价值，并以位于层块构造中带南部地区油气地质条件最有利。

ENLIGHTENMENT OF DISCOVERING ANYUAN FORMATION IN NANCHANG SEG TO OIL AND GAS EXPLORATION

The hydrocarbon source rocks of Anyuan Formation, Upper Triassic,have been exposed by well Pocan-1 drilled lately in Nanchang Seg, thus negating the traditional idea of lacking of Upper Triassic and indicating the existence of the new exploration domain of Upper Triassic in the seg. Through the comprehensive analysis and investigation of the geological structure at well Pocan-1 area, it was pointed out that the structural conditions in Nanchang Seg are simpler than those in its peripheric regions, belonging in an independent layer-block structural unit controlled by the slip-sheet and dip-slip structures since Late Triassic. The Upper Trassic hydrocarbon source rocks were of various types of kerogen and late hydrocarbon generating ability, and combined with overlying Cretaceous together to construct a rebuilt oil and gas preservation unit, thus possessing the value of further exploration. In addition, the oil and gas geological conditions in the south part of middle layer-block structural unit are most favorable.