Oil & Gas Geology ›› 2008, Vol. 29 ›› Issue (4): 502-506.doi: 10.11743/ogg20080413

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Application of tectonic-thermal evolution history to hydrocarbon accumulation timing in sedimentary basins

Ren Zhanli1,2, Liu Li2, Cui Junping2, Xiao Hui2, Gao Shengli2   

  1. 1. State Key Laboratory of Continental Dynamics, Northwest University, Xi'an, Shaanxi 710069, China;
    2. Northwest University, Xi'an, Shaanxi 710069, China
  • Received:2008-06-24 Online:2008-08-24 Published:2012-01-16

Abstract:

The hydrocarbon generation,migration,accumulation,and reservoiring,are controlled by basin tectonic-thermal history.The sedimentary basins in China are mostly superimposed basins with complicated thermal history.Basins with different tectonic-thermal evolution history and different thermodynamic settings vary dramatically in source rock maturity,depth of oil-generation threshold,key hydrocarbon generation time,and period and times of hydrocarbon accumulation.Multiphase hydrocarbon accumulation is one of the characteristics of the superimposed basins in China.It was controlled by the multiphase hydrocarbon generation of the source rocks and ultimately by the tectonic-thermal evolution history of the basin.The methods for the timing of hydrocarbon accumulation are plenty but all have upsides and downsides with their different approaches and principles.A detailed description of tectonic-thermal history is regarded as an effective way to deal with the contradictory caused by these methods.

Key words: reservoiring stage, hydrocarbon accumulation, tectonic-thermal event, thermal history type, tectonic-thermal history, superimposed basin

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