勘探思路、地质认识与勘探技术的创新带来了普光气田的发现。通过对宣汉达县地区勘探历程的解剖，分析了普光地区构造―岩性复合圈闭勘探思路的形成过程，阐述了深层超深层优质碳酸盐岩储层预测模式等主要地质新认识，及复杂碳酸盐岩综合储层预测的技术思路。普光气田的发现，带动了川东北地区元坝、河坝及四川盆地深层勘探的发展，为“川气东送”工程奠定了坚实的资源基础。

The discovery of Puguang Gas Field should be attributed to the innovation of exploration ideas, geological understanding and the development of exploration technologies. By anatomizing the exploration history of Xuanhan-Daxian area, this paper analyzed the formation of structural-lithologic complex trap exploration strategy in Puguang area, expounded the new geological understanding of predictive models of deep-ultra deep high quality carbonate reservoirs and the technical ideas of complicated carbonate reservoir prediction. The discovery of Puguang Gas Field has contributed to the development of deep strata exploration in the Yuanba, Heba and the whole Sichuan Basin, and established the solid resources basis for the "Gas Pipeline from Sichuan to China Eastern Region"  Project.