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Prototypes,modifications,and hydrocarbon enrichment variations in basins influenced by Tethyan evolution:A comparative analysis of the persian gulf basin and the Sichuan basin

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Science China Earth Sciences 2023年第12期66卷 2871-2897页

作者： Zhiliang HE Zhijun JIN Shuangjian LI Guoping BAI Xueyan LV Jinrui GUO Jian GAO Jinyin YIN Yingqiang LI Dingye ZHENG China Petroleum&Chemical Corporation Beijing 100728China Institute of Energy Peking UniversityBejing 100871China SINOPEC Petroleum Exploration and Production Research Institute Beijing 102206China SINOPEC Key Laboratory of Geology and Resources in Deep Stratum Beijing 102206China

The hydrocarbon accumulation modes and differences in the Tethyan realm serve as a hot research topic in the petroleum geology community at home and *** the persian gulf basin in the Middle East and the Sichuan basin in China,situated on the southern and northern sides of the Tethyan realm,respectively,record the whole geological process of the opening and closure of the Prototethys,the Paleotethys,and the Neotethys sequentially,exhibiting anomalous hydrocarbon *** on the analysis of the plate tectonic evolution in the Tethyan realm,this study dissects the structures and hydrocarbon accumulation conditions of both *** by a systematic comparative analysis of the factors controlling hydrocarbon enrichment in the process of plate breakup and convergence in the Tethyan realm,this study proposes petroleum exploration targets in the *** results are as follows:(1)Since the Meso-Neoproterozoic,the persian gulf basin and the Sichuan basin have undergone similar tectonic evolution in the early stage but different in the late *** the influence of the formation and evolution of the Prototethys,Paleotethys,and Neotethys oceans,both basins experienced multi-stage development and modification,forming two major extension-convergence ***,both basins are characterized by the vertical orderly superimposition of various basin prototypes in the order of rift-intracratonic basin(passive continental margin)-foreland.(2)The fact that the Tethyan realm was long located at medium-low latitudes and the local anoxic environment formed in the process of plate breakup and convergence played a vital role in the formation of extensive source *** source rocks are predominantly distributed in underfilled rifts and deep depressions that were connected to the ocean in the unidirectional continental breakup process;basin-slopes and intra-shelf basins on passive continental margins;basinal lows within intracratonic basins,and underfill

关键词： Tethyan realm Unidirectional breakup and convergence basin prototype Structural modification Hydrocarbon enrichment Exploration target persian gulf basin Sichuan basin

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Comparison of Kuqa foreland basin with persian gulf basin in salt tectonics

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Global Geology 2007年第2期10卷 156-165页

作者： Guimei WAN Liangjie TANG Wenzheng JIN basin and Reservoir Research Centre China University of Petroleum Beijing 102249 China Key Laboratory for Hydrocarbon Accumulation Mechanism of Ministry of Education ChinaUniversity of Petroleum Ministry of Education Beijing 102249 China

Compared Kuqa foreland basin with persian gulf basin in development of salt layers, salt tectonics, and the relation between salt tectonics and hydrocarbon, it is concluded that the salt diapirs are relative to hydrocarbon. Searching salt diapirs and related traps in Kuqa foreland basin is important. The forming mechanism of salt tectonic in Kuqa foreland basin is different from that of Hormuz Series, but similar to that of Lower Fars Series/Gachsaran Formation. Inspired by the role of salt tectonics of Lower Fars Series/Gaehsaran Formation in hydrocarbon accumulation, the authors considered that the exploration below salt layer should be enforced, and the traps below salt layer in the southern part of the Kuqa foreland basin would be found where salt layer is thicker. On the contrary, the traps should be found both above and below the salt layer in front of the northern mountain where salt layer is thin. The Triassic and Jurassic source rocks are rich in this area with great exploration prospective.

关键词： Kuqa foreland basin persian gulf basin salt tectonics comparison

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