Tectonic evolution and source rocks development of the super oil-rich Bohai Bay Basin,East China  

作　　者：ZHANG Gongcheng TONG Dianjun CHEN Kai LIU Hui FANG Xuan 

机构地区：[1]CNOOC Research Institute Company Limited,Beijing 100028,China [2]Hubei Key Laboratory of Marine Geological Resources,China University of Geosciences,Wuhan 430074,China

出　　处：《Petroleum Exploration and Development》2024年第5期1165-1182,共18页石油勘探与开发（英文版）

基　　金：Supported by the Project from Department of Science and Information of CNOOC(2021-KT-YXKY-03)。

摘　　要：The Bohai Bay Basin,as a super oil-rich basin in the world,is characterized by cyclic evolution and complex regional tectonic stress field,and its lifecycle tectonic evolution controls the formation of regional source rocks.The main pre-Cenozoic stratigraphic system and lithological distribution are determined through geological mapping,and the dynamics of the pre-Cenozoic geotectonic evolution of the Bohai Bay Basin are investigated systematically using the newly acquired high-quality seismic data and the latest exploration results in the study area.The North China Craton where the Bohai Bay Basin is located in rests at the intersection of three tectonic domains:the Paleo-Asian Ocean,the Tethys Ocean,and the Pacific Ocean.It has experienced the alternation and superposition of tectonic cycles of different periods,directions and natures,and experienced five stages of the tectonic evolution and sedimentary building,i.e.Middle–Late Proterozoic continental rift trough,Early Paleozoic marginal-craton depression carbonate building,Late Paleozoic marine–continental transitional intracraton depression,Mesozoic intracontinental strike-slip–extensional tectonics,and Cenozoic intracontinental rifting.The cyclic evolution of the basin,especially the multi-stage compression,strike-slip and extensional tectonics processes in the Hercynian,Indosinian,Yanshan and Himalayan since the Late Paleozoic,controlled the development,reconstruction and preservation of several sets of high-quality source rocks,represented by the Late Paleozoic Carboniferous–Permian coal-measure source rocks and the Paleogene world-class extra-high-quality lacustrine source rocks,which provided an important guarantee for the hydrocarbon accumulation in the super oil-rich basin.

关 键 词：tectonic evolution sedimentary building stratigraphic distribution source rock Bohai Bay Basin super basin 

分 类 号：P618.13[天文地球—矿床学]