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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2014  >  36(2): 224-229
Kuang Lichun, Gao Gang, Xiang Baoli, Wang Xulong, Wang Chengyun, Liu Guangdi. Lowest limit of organic carbon content in effective source rocks from Lucaogou Formation in Jimusar Sag[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2014, 36(2): 224-229. doi: 10.11781/sysydz201402224
Citation: Kuang Lichun, Gao Gang, Xiang Baoli, Wang Xulong, Wang Chengyun, Liu Guangdi. Lowest limit of organic carbon content in effective source rocks from Lucaogou Formation in Jimusar Sag[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2014, 36(2): 224-229. doi: 10.11781/sysydz201402224
shu

Lowest limit of organic carbon content in effective source rocks from Lucaogou Formation in Jimusar Sag

doi: 10.11781/sysydz201402224
  • 1.

    Xinjiang Oil Field Company, PetroChina, Karamay, Xinjiang 834000, China

  • 2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China

  • Received Date: 2013-02-02
  • Rev Recd Date: 2014-02-22
  • Publish Date: 2014-03-28
    Abstract
  • The generation and organic geochemical features of source rocks from the Lucaogou Formation in Ji174 well area in the Jimusar Sag of the Junggar Basin were studied. According to hydrocarbon expulsion laws as well as the relationships between soluble organic matter transformation rate, pyrolysis S1/w(TOC) and organic carbon content, the lowest limit of organic carbon content for hydrocarbon expulsion in lutaceous source rocks was determined. In the Lucaogou Formation in Ji174 well area, lutaceous source rocks developed well, and their hydrocarbon generation conditions were similar even though the lithology was various. Due to the differences in mineral compositions and organic matter characteristics, the lowest limit of organic carbon content for hydrocarbon expulsion was different. For pure lutaceous, silty, calcareous and dolomite source rocks, the lowest limits were 2.50%,2.80%,1.45% and 1.30%, respectively. The carbonate-containing effective source rocks took larger proportions than pure and silty mudstones, all over 50%. It was concluded that in the Lucaogou Formation in Ji174 well area, lutaceous effective source rocks were well-developed, and the lowest limits of organic carbon content were higher, which were favorable for hydrocarbon reservoirs.

     

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