Geological conditions, reservoir evolution and favorable exploration directions of marine ultra-deep oil and gas in China

LI Jianzhong,TAO Xiaowan,BAI Bin,HUANG Shipeng,JIANG Qingchun,ZHAO Zhenyu,CHEN Yanyan,MA Debo,ZHANG Liping,LI Ningxi,SONG Wei

Fig. 5. Hydrocarbon accumulation and evolution process of the Sinian-Cambrian reservoirs in Central Sichuan. Z2dn1—Deng 1 Member; Z2dn2—Deng 2 Member; Z2dn4—Deng 4 Member; —C1q—Qiongzhusi Formation; —C1c—Canglangpu Formation; —C 1l—Longwangmiao Formation; —C2+3—Middle-Upper Cambrian; O—Ordovician; S—Silurian; P—Permian; T1-2—Middle-Lower Triassic; T3x—Xujiahe Formation; J—Jurassic.