Oil & Gas Geology ›› 2007, Vol. 28 ›› Issue (5): 653-663.doi: 10.11743/ogg20070517

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Multicycle tectonic evolution and composite petroleum systems in the Tarim Basin

Zhang Guangya, Zhao Wenzhi, Wang Hongjun, Li Honghui, Liu Lei   

  1. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China
  • Received:2007-07-13 Online:2007-10-25 Published:2012-01-16

Abstract:

The multicycle tectonic evolution of Tarim craton controls the formation of superimposed the Tarim Basin,petroleum-geology conditions as well as the features of composite petroleum system,thus determines hydrocarbon distribution and resources potential in the basin.Dominated by the evolution of Paleo-Asian tectonic domain and Tethyan tectonic domain,the basin experienced three extensional-compressional cycles,which can be divided into six phases,with various prototype basins.Affected by 6 large-scale tectonic movements,including Caledonian,early Hercynian,latest Hercynian,Indosinian,Yanshan,and Himalayan,these prototype basins were reshaped by uplifting,denudation,folding,and faulting.The Tarim Basin have the following geologic characteristics:many sets of source rocks,several hydrocarbon kitchens,various types of reservoirs,multiply of reservoir-cap rock combinations,and multistage hydrocarbon generation and accumulation,as well as multiphase adjustment,reforming,and destruction.According to the distribution of the hydrocarbon kitchens and their relation with re-servoirs containing hydrocarbon generated by them,10 composite petroleum systems can be recognized in the basin.The Palaeozoic petroleum system has the following three critical periods:Late Caledonian-early Hercynian,late Hercynian and Himalayan.The hydrocarbon distribution of the petroleum system in each critical period is controlled by the relationships between the hydrocarbon kitchens and paleohighs,and finalized by the superposition of multi-stage petroleum systems.

Key words: multicycle tectonic evolution, composite petroleum system, craton basin, foreland basin, Tarim Basin

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