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Superimposed versus residual basin:The North Yellow Sea basin

Geoscience Frontiers 2012年第1期3卷 33-39页

作者： Wenyong Li Wenfen Lu Yanxu Liu Jianchun Xu China Aero Geophysical Survey and Remote Sensing Center for Land and Resources Beijing 100083China

The North Yellow Sea basin is a Mesozoic and Cenozoic basin. Based on basin-margin facies, sedimentary thinning, size and shape of the basin and vitrinite reflectance, North Yellow Sea basin is not a residual basin. Analysis of the development of the basin＇s three structural layers, self-contained petroleum systems, boundary fault activity, migration of the Mesozoic--Cenozoic sedimentation centers, different basin structures formed during different periods, and superposition of a two-stage extended basin and one-stage depression basin, the North Yellow Sea basin is recognized as a superimposed basin.

关键词： Superimposed basin residual basin Identification method basinal structures basin superposition North Yellow Sea basin

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Methods of Studying Petroleum Systems in residual basins-A Case Study of Mesozoic and Palaeozoic Marinebasins in Southern China

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Acta Geologica Sinica(English Edition) 2002年第2期76卷 205-220页

作者： ZHAO Zongju, ZHU Yan, YANG Shufeng, WANG Genghai,XU Yunjun, FENG Jialiang and DENG Hongying Department of Geoscience, Zhejiang University, Hangzhou 310027, Zhejiang Hangzhou Institute of Petroleum Geology, Hangzhou 310023, Zhejiang Zhou Jian Fei Zhenbi Department of Geoscience Zhejiang University Hangzhou 310027 Zhejiang

Through an integrated study of Mesozoic and Palaeozoic petroleum geology insouthern China and a summing-up of the results of exploration, the authors tentatively put forward aset of methods of studying petroleum systems in modified residual basins or superposed basins. Itscore idea is to put emphasis on the study of the dynamic evolution of petroleum systems. Thetempo-spatial evolution, hydrocarbon-generating processes and hydrocarbon-generating intensities andamounts of resources in different geological stages of chief source rocks are mainly deducedbackward by 3-D basin modelling. The regularities of formation and destruction of oil and gasaccumulations are summarized by analyzing the fossil and existing oil and gas accumulations, thedirection of migration is studied by palaeo-structural analysis, and the dynamic evolution ofPalaeozoic and Mesozoic petroleum systems in southern China is studied according to stages of majortectonic movements. The authors suggest that the realistic exploration targets of Palaeozoic andMesozoic petroleum systems in southern China are secondary and hydrocarbon-regeneration petroleumsystems, while the existing primary petroleum systems are rare. They propose that the favourableareas for exploration of Palaeozoic and Mesozoic petroleum systems in southern China are the frontarea of the Daba Mountains and the steep anticlinal zone on the western side of the Shizhusynclinorium in northeastern Sichuan, the Funin-Yancheng-Hai'an-Xinghua-Baoying area in the northernJiangsu basin, the Qianjiang-Xiantao-Paizhou-Chacan 1 well area in the southern part of the Chenhuarea of the Jianghan basin, the South Poyang basin in Jiangxi and the North subbasin of the Chuxiongbasin. This view has been supported by the discovery of the Zhujiadun gas field in the Yanchengsubbasin of the northern Jiangsu basin and the Kaixiantaixi oil-bearing structure in the southernpart of the Chenhu area of the Jianghan basin.

关键词： residual basin superposed basin petroleum system marine basin southern China

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