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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2011  >  33(6): 662-670
Zhu Jianhui, Lü Jianhong, Miao Jiujun, Yuan Dongshan, Zhang Yanxia. Hydrocarbon generation potential of lower Paleozoic source rocks in southwestern margin of Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2011, 33(6): 662-670. doi: 10.11781/sysydz201106662
Citation: Zhu Jianhui, Lü Jianhong, Miao Jiujun, Yuan Dongshan, Zhang Yanxia. Hydrocarbon generation potential of lower Paleozoic source rocks in southwestern margin of Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2011, 33(6): 662-670. doi: 10.11781/sysydz201106662
shu

Hydrocarbon generation potential of lower Paleozoic source rocks in southwestern margin of Ordos Basin

doi: 10.11781/sysydz201106662
  • 1.

    State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China

  • 2. Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214151, China

  • Received Date: 2011-01-22
  • Rev Recd Date: 2011-10-12
  • Publish Date: 2011-12-28
    Abstract
  • Carbonate and clastic source rocks generated in continental margin environment at the southwestern margin of the Ordos Basin during the early Paleozoic.Explorations proved that the lower Paleozoic source rocks experienced higher hydrocarbon generation even though their organic matter abundance was low.Good source rocks (usually type Ⅰ and Ⅱ) were found in weak-reducing and reducing bathyal environment with high salinity content.Cambrian source rocks generated hydrocarbon during Triassic and had limited contribution to the present reservoirs.The source rocks in Majiagou and Pingliang Formations of Ordovician generated hydrocarbon during Jurassic and Cretaceous.Ordovician source rocks are in high evolution stage,represented by the carbonate rocks in Majiagou Formation as well as the dark mudstones and carbonate rocks in Pingliang Formation.The hydrocarbon generation quantity of the lower Paleozoic is 172.87×1012 m3,while in the north it exceeds 40×108 m3/km2,and in the south it amounts to 30×108 m3/km2.

     

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