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Thermal Evolution History Analysis of Source Rocks of Hefei Basin[J]. Acta Sedimentologica Sinica, 2008, 26(1): 168-177.
Citation: Thermal Evolution History Analysis of Source Rocks of Hefei Basin[J]. Acta Sedimentologica Sinica, 2008, 26(1): 168-177.

Thermal Evolution History Analysis of Source Rocks of Hefei Basin

  • Received Date: 2007-03-30
  • Rev Recd Date: 2007-04-23
  • Publish Date: 2008-02-10
  • Based on vitrinite reflectivity analysis, paleogeotemperature inversion and X ray diffraction series of the smallest granule illite crystallinity, this paper has analyzed thermal evolution of source rock since CarboniferousPermian. The result indicates that 1:CarboniferousPermian source rock was in high maturity, entered threshold of oil generation after the lower Jurassic deposition. After the upper Jurassic, paleogeotemperature was up to 245℃. 2: Fanghushan Formation of the lower Jurassic was also in higher maturity, entered threshold of oil generation after the middle Jurassic, maximal paleogeotemperature up to 260℃ after the middle Cretaceous. 3: Middleupper Jurassic enter threshold of oil generation at lower Cretaceous. Its maximal paleogeotemperature up to 225℃ and 230℃ after Zhuxiang Formation.4: Maximal paleogeotemperature of Zhuxiang Formation up to 110120℃ at the end of the early Cretaceous 5:. Dingyuan Formation of paleogene is immature, maximal paleogeotemperature less than 50℃ after Dingyuan Formation deposition.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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  • Received:  2007-03-30
  • Revised:  2007-04-23
  • Published:  2008-02-10

Thermal Evolution History Analysis of Source Rocks of Hefei Basin

Abstract: Based on vitrinite reflectivity analysis, paleogeotemperature inversion and X ray diffraction series of the smallest granule illite crystallinity, this paper has analyzed thermal evolution of source rock since CarboniferousPermian. The result indicates that 1:CarboniferousPermian source rock was in high maturity, entered threshold of oil generation after the lower Jurassic deposition. After the upper Jurassic, paleogeotemperature was up to 245℃. 2: Fanghushan Formation of the lower Jurassic was also in higher maturity, entered threshold of oil generation after the middle Jurassic, maximal paleogeotemperature up to 260℃ after the middle Cretaceous. 3: Middleupper Jurassic enter threshold of oil generation at lower Cretaceous. Its maximal paleogeotemperature up to 225℃ and 230℃ after Zhuxiang Formation.4: Maximal paleogeotemperature of Zhuxiang Formation up to 110120℃ at the end of the early Cretaceous 5:. Dingyuan Formation of paleogene is immature, maximal paleogeotemperature less than 50℃ after Dingyuan Formation deposition.

Thermal Evolution History Analysis of Source Rocks of Hefei Basin[J]. Acta Sedimentologica Sinica, 2008, 26(1): 168-177.
Citation: Thermal Evolution History Analysis of Source Rocks of Hefei Basin[J]. Acta Sedimentologica Sinica, 2008, 26(1): 168-177.

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