西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (1): 19-22.DOI: 10.3863/j.issn.1674-5086.2009.01.005

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THE MATCHING RELATIONSHIP BETWEEN STRUCTURAL DEFORMATION STAGE AND HYDROCARBON GENERATION STAGE IN EASTERN QIULITAGE TECTONIC BELT OF KUQA DEPRESSION

JIN Wen-zhenga，b TANG Liang-jiea，b WAN Gui-meia，b YU Yi-xina，b

  

  1. China University of Petroleum：a.Basin and Reservoir Research Center,b.State Key Laboratory of Petroleum Resource and Prospecting,Changping Beijing 102249,China)JOURNAL OF SOUTHWEST PETROLEUM UNIVERSITY(SCIENCE & TECHNOLOGY EDITION)，VOL.31，NO.1,19-22,2009（ISSN 1674-5086，in Chinese
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-02-20 Published:2009-02-20

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Abstract:

In eastern Qiulitage Tectonic Belt of Kuqa Depression,there exist complex geological structures as the result of the complicated tectonic evolution,the source rocks in Yangxia Sag have also experienced complex evolution since Mesozoic.It is important to hydrocarbon accumulation that the generation time of source rocks matches the formation time of structural traps.The hydrocarbon generated at the same time as or after the structural traps form is favorable for accumulating.Through analyzing the balanced profile and the growth strata,it is found that the main stage of tectonic movement of the Eastern Qiulitage Tectonic Belt in Kuqa depression was from Kuqa stage of Pliocene to Quaternary.Then the maturity history of source rocks of Triassic and Jurassic in the Yang well 1& artificial well1 is simulated,and it is found that Triassic source rocks generated wet gas and dry gas and Jurassic source rocks generated condensate gas from Kuqa stage of Pliocene to present.Thus,in the structural deformation period,there is a good matching relationship with the hydrocarbon generation stage of source rocks in Yangxia sag,and the structural traps in the studied area should have captured massive gas that generated in Yangxia Sag.

Key words: Eastern Qiulitage tectonic belt, structural deformation stage, hydrocarbon generation history, the balanced profile, the growth strata

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