Control of Earth system evolution on the formation and enrichment of marine ultra-deep petroleum in China  

作　　者：ZHANG Shuichang WANG Huajian SU Jin WANG Xiaomei HE Kun LIU Yuke 

机构地区：[1]PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China [2]CNPC Key Laboratory of Petroleum Geochemistry,Beijing 100083,China

出　　处：《Petroleum Exploration and Development》2024年第4期870-885,共16页石油勘探与开发（英文版）

基　　金：Supported by National Key Research and Development Program of China(2017YFC0603101);National Natural Science Foundation of China(42225303,42372162,42102146);Strategic Priority Research Program of the Chinese Academy of Sciences(XDA14010101);Basic and Forward-Looking Major Technology Project of China National Petroleum Corporation(2023ZZ0203)。

摘　　要：Taking the Paleozoic of the Sichuan and Tarim basins in China as example,the controlling effects of the Earth system evolution and multi-spherical interactions on the formation and enrichment of marine ultra-deep petroleum in China have been elaborated.By discussing the development of“source-reservoir-seal”controlled by the breakup and assembly of supercontinents and regional tectonic movements,and the mechanisms of petroleum generation and accumulation controlled by temperature-pressure system and fault conduit system,Both the South China and Tarim blocks passed through the intertropical convergence zone(ITCZ)of the low-latitude Hadley Cell twice during their drifts,and formed hydrocarbon source rocks with high quality.It is proposed that deep tectonic activities and surface climate evolution jointly controlled the types and stratigraphic positions of ultra-deep hydrocarbon source rocks,reservoirs,and seals in the Sichuan and Tarim basins,forming multiple petroleum systems in the Ediacaran-Cambrian,Cambrian-Ordovician,Cambrian-Permian and Permian-Triassic strata.The matching degree of source-reservoir-seal,the type of organic matter in source rocks,the deep thermal regime of basin,and the burial-uplift process across tectonic periods collectively control the entire process from the generation to the accumulation of oil and gas.Three types of oil and gas enrichment models are formed,including near-source accumulation in platform marginal zones,distant-source accumulation in high-energy beaches through faults,and three-dimensional accumulation in strike-slip fault zones,which ultimately result in the multi-layered natural gas enrichment in ultra-deep layers of the Sichuan Basin and co-enrichment of oil and gas in the ultra-deep layers of the Tarim Basin.

关 键 词：evolution of Earth system multi-spherical interaction Paleozoic marine ultra-deep petroleum Tarim Basin Sichuan Basin 

分 类 号：P618.13[天文地球—矿床学]