Liu Guangxiang, Luo Kaiping, Peng Jinning, Deng Mo, Guan Honglin. CAUSES AND SIGNIFICANCE OF ABNORMAL THERMAL EVOLUTION OF ORGANIC MATTERS IN CHANGYANG AREA, HUBEI PROVINCE[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2010, 32(1): 52-57. doi: 10.11781/sysydz201001052
Citation: Liu Guangxiang, Luo Kaiping, Peng Jinning, Deng Mo, Guan Honglin. CAUSES AND SIGNIFICANCE OF ABNORMAL THERMAL EVOLUTION OF ORGANIC MATTERS IN CHANGYANG AREA, HUBEI PROVINCE[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2010, 32(1): 52-57. doi: 10.11781/sysydz201001052

CAUSES AND SIGNIFICANCE OF ABNORMAL THERMAL EVOLUTION OF ORGANIC MATTERS IN CHANGYANG AREA, HUBEI PROVINCE

doi: 10.11781/sysydz201001052
  • Received Date: 2009-08-26
  • Rev Recd Date: 2009-12-08
  • Publish Date: 2010-02-28
  • Studies of vitrinite reflectance and illite crystallinity from Upper Sinian to Lower Triassic in Chang-yang area of Hubei Province have indicated that,there are 2 abnormal zones of equivalent vitrinite reflectance and illite crystallinity between Permian-top of Silurian and bottom of Silurian-top of Lower Cambrian.The upper abnormal zone is formed by thermal effects of advection hot liquid flowing along D2y,S3sh sandstone reservoir as well as D2y/S3sh,C1y/D unconformity surface.The lower abnormal zone is formed by thermal convection of hot liquid in-C1s-O reservoir.Hydrocarbon generation in P and O3w-S1ln should stop at the end of Middle Triassic;however,due to thermal effect of hot liquid during the Yanshanian stage,it continues to the end of Jurassic,hence favorable for petroleum accumulation.

     

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