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Sedimentary Characteristics and Hydrocarbon Accumulation in Northeast Sichuan Basin

LI Jian-ming1, WU Xi-ling1, LI Ru-feng2，TANG Liang-jie2，LI Lei2   

  1. 1.Well Logging Research Center, China University of Petroleum, Beijing 102249,China;2.Basin and Reservoir Research Center, China University of Petroleum, Beijing 102249,China
  • Received:2006-07-15 Revised:1900-01-01 Online:2007-05-26 Published:2007-05-26
  • Contact: LI Jian-ming

Abstract: Northeast Sichuan Basin is a Mesozoic-Cenozoic basin in north margin of the Yangtse plate, which has a complex tectonic background and hydrocarbon accumulation history. By means of the analysis method of wave processes, major cycles of sedimentary wave process in this basin have been studied. The results show that there are five-order cycles corresponding to 760 Ma, 220 Ma, 100 Ma, 35 Ma and 20 Ma respectively, and the two first-order sedimentary cycles(200 Ma) and four second-order sedimentary cycles. The authors find that the second-order sedimentary cycles are well matched with reservoir formation cycles through studying the relationship between second-order sedimentary cycles and reservoir formation cycles, and divide three reservoir formation cycles in this basin.

Key words: sedimentary wave characteristics, wave cycle, reservoir formation cycle, Northeast Sichuan Basin

CLC Number: 

  • P618.130.2
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