Abstract: In the deep-ultra-deep area of the Sichuan Basin, Anyue and Penglai gas fields have been discovered, with reserves exceeding 100 trillion cubic meters, making them two super-large gas fields in Sinian-Cambrian system. In order to find their replacements, it is urgent to clarify the main controlling factors of their accumulation. Based on the previous studies, a systematic study on the gas genesis and the main controlling factors of the Anyue and Penglai gas fields was conducted by using geological and geochemical data. The research concludes that the formation of deep-ultra-deep super-large gas fields is mainly controlled by four main controlling factors: （1）The development of two intracontinental rifts, namely the Deyang-Anyue and Wanyuan-Dazhou rifts, during the Late Sinian to Early Cambrian periods, which controlled the formation of high-quality main source rocks in the Lower Cambrian. The thickness of source rocks in these rifts is three to four times that of adjacent areas, and their gas generation intensity is two to three times higher.（2）The development of the Anyue-Fengjie shelf margin platform during the Late Sinian to Early Cambrian periods, which controlled the formation of four high-quality reservoirs: the second and fourth members of the Dengying Formation of the Sinian System and the lower member of the Canglangpu Formation and the Longwangmiao Formation of the Cambrian System. The reservoirs in the shelf margin zone are thick and have good storage properties. （3）The long-term inheritance of the Gaoshitiji-Moxi giant paleo-uplift formed during the Tongwanian period, which controlled the formation of large structural and lithologic traps in the core of the paleo-uplift and lithologic traps in the slope area. The areas of the Dengying Formation traps in the core and slope of the paleo-uplift are 7500 km² and 5720 km², respectively. （4）The in-situ cracking of large ancient oil reservoirs to form gas fields, with high accumulation efficiency. A large number of liquid hydrocarbon inclusions were found in different host minerals, with abundances ranging from 10% to 80%. The content of reservoir bitumen in the gas-rich areas is high, mainly ranging from 1% to 8%.Based on the factors such as the platform margin shoals and the platform interior shoals, the scale of source rocks, the structure of the target layer and the exploration degree, as well as the geological conditions that the study area has the potential for three-dimensional hydrocarbon accumulation and multiple enrichment, three types of favorable areas for the formation of large and super-large gas fields are evaluated. The first type of area is the development zone of the platform margin shoals and the platform interior shoals where the Anyue and Penglai gas fields have been discovered, namely the Anyue-Penglai zone. The second type of area is the development zones of the platform margin shoals and the platform interior shoals where breakthroughs have been made or which have the potential for large-scale exploration, such as Hongya-Leshan, Yilong-Guangyuan, Rongchang-Gulin, Bazhong-Dazhou, and Shizhu-Lichuan. The third type of area is the development zones of the platform interior shoals, such as Chongqing-Liangping and Weiyuan-Luzhou.The research results have significant implications for deep and ultra-deep oil and gas exploration.

Key words: Deep-ultra-deep area, Intracratonic rifts, Shelf-rimmed platform, Main controlling factors, Sinian-Cambrian, Anyue gas field;Penglai gas field, Sichuan Basin