邱军利, 妥进才, 张明峰, 雷天柱, 夏燕青. 柴达木盆地东部石炭系烃源岩热模拟实验及生烃潜力[J]. 煤田地质与勘探, 2011, 39(3): 24-28. DOI: 10.3969/j.issn.1001-1986.2011.03.005
引用本文: 邱军利, 妥进才, 张明峰, 雷天柱, 夏燕青. 柴达木盆地东部石炭系烃源岩热模拟实验及生烃潜力[J]. 煤田地质与勘探, 2011, 39(3): 24-28. DOI: 10.3969/j.issn.1001-1986.2011.03.005
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QIU Junli, TUO Jincai, ZHANG Mingfeng, LEI Tianzhu, XIA Yanqing. Pyrolysis experiment and hydrocarbon generation potential of Carboniferous source rocks in the east of Qaidam basin[J]. COAL GEOLOGY & EXPLORATION, 2011, 39(3): 24-28. DOI: 10.3969/j.issn.1001-1986.2011.03.005
Citation: QIU Junli, TUO Jincai, ZHANG Mingfeng, LEI Tianzhu, XIA Yanqing. Pyrolysis experiment and hydrocarbon generation potential of Carboniferous source rocks in the east of Qaidam basin[J]. COAL GEOLOGY & EXPLORATION, 2011, 39(3): 24-28. DOI: 10.3969/j.issn.1001-1986.2011.03.005
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柴达木盆地东部石炭系烃源岩热模拟实验及生烃潜力

Pyrolysis experiment and hydrocarbon generation potential of Carboniferous source rocks in the east of Qaidam basin

    摘要
  • 摘要: 通过热模拟实验及热模拟产物组分和稳定碳同位素分析，对柴达木盆地东部石炭系烃源岩的生烃能力及产物特征进行了研究。结果表明：石炭系烃源岩的气态烃产率为67.27～161.01m3/t(TOC)，总气体产率为220.51～453.39m3/t(TOC)，显示柴达木盆地东部石炭系烃源岩具有较高的生气能力；液态有机质产率仅为1.73～4.30kg/t(TOC)，残余生油能力相对较低，但考虑到石炭系烃源岩的成熟度已经接近生油窗的下限值(1.3%)，因此模拟实验的液态有机质产率不能真实反映石炭系烃源岩的生油潜力。根据模拟实验的气态烃产率可知，柴达木盆地东部石炭系泥质烃源岩的生气强度为14.2×108～42.5×108 m3/km2，显示其具备形成规模气藏的生烃条件。

     

    Abstract: By taking pyrolysis experiment and analyzing composition and carbon isotopes of pyrolysis products, the hydrocarbon generation potential and products of carboniferous source rocks in the east of Qaidam basin were studied.The results showed that gas hydrocarbon generation of carboniferous source rocks were 67.27～161.01m3/t(TOC), the total gas generation of carboniferous source rocks was 220.51～453.39m3/t(TOC), these values showed that Carboniferous source rocks in the east of Qaidam basin had a high ability to produce natural gas.The yield of liquid organic matter only was from 1.73kg/t. (TOC) to 4.30kg/t(TOC), indicating lower residual oil generation capacity.However, since carboniferous source rocks are close to the maturity of oil window of the lower limit (1.3%), so the liquid organic matter yields can not reflect the oil-generating potential of Carboniferous source rocks.The reservoir-forming potential of Carboniferous source rocks has been discussed in this paper, it is predicted that the hydrocarbon generation intensity can be 14.2×108～42.5×108 m3/km2 on Carboniferous in the east of Qaidam basin, capable of forming gas pools in certain scales.

     

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