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页岩油可动性分子地球化学评价方法——以济阳坳陷页岩油为例

蒋启贵 黎茂稳 马媛媛 曹婷婷 刘鹏 钱门辉 李志明 陶国亮

蒋启贵, 黎茂稳, 马媛媛, 曹婷婷, 刘鹏, 钱门辉, 李志明, 陶国亮. 页岩油可动性分子地球化学评价方法——以济阳坳陷页岩油为例[J]. 石油实验地质, 2018, 40(6): 849-854. doi: 10.11781/sysydz201806849
引用本文: 蒋启贵, 黎茂稳, 马媛媛, 曹婷婷, 刘鹏, 钱门辉, 李志明, 陶国亮. 页岩油可动性分子地球化学评价方法——以济阳坳陷页岩油为例[J]. 石油实验地质, 2018, 40(6): 849-854. doi: 10.11781/sysydz201806849
JIANG Qigui, LI Maowen, MA Yuanyuan, CAO Tingting, LIU Peng, QIAN Menhui, LI Zhiming, TAO Guoliang. Molecular geochemical evaluation of shale oil mobility: a case study of shale oil in Jiyang Depression[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2018, 40(6): 849-854. doi: 10.11781/sysydz201806849
Citation: JIANG Qigui, LI Maowen, MA Yuanyuan, CAO Tingting, LIU Peng, QIAN Menhui, LI Zhiming, TAO Guoliang. Molecular geochemical evaluation of shale oil mobility: a case study of shale oil in Jiyang Depression[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2018, 40(6): 849-854. doi: 10.11781/sysydz201806849

页岩油可动性分子地球化学评价方法——以济阳坳陷页岩油为例

doi: 10.11781/sysydz201806849
基金项目: 

国家科技重大专项“大型油气田及煤层气开发:中国典型盆地陆相页岩油勘探开发选区与目标评价”(2017ZX05049001)资助。

详细信息
    作者简介:

    蒋启贵(1963-),男,博士,研究员,从事有机地球化学实验与应用研究。E-mail:qiguij2004@126.com。

  • 中图分类号: TE135

Molecular geochemical evaluation of shale oil mobility: a case study of shale oil in Jiyang Depression

  • 摘要: 目前,对于页岩油的可动性评价还没有规范的方法和标准,常使用热解S1S1/w(TOC)及中值孔喉半径等多参数的组合并结合勘探开发实际来进行综合表征,相关地质解释理论依据相对缺乏。通过对济阳坳陷页岩油岩心样品的实验分析及研究,利用页岩油分子组成与页岩含油性及页岩油赋存空间的耦合关系,建立了表征页岩油可动性的分子地球化学评价参数模型。研究表明,当∑nC20-/∑nC21+比值小于1时,页岩孔喉中值半径一般大于20 nm,此时,热解S1一般大于3 mg/g,S1/w(TOC)>100 mg/g,且随S1S1/w(TOC)及页岩孔喉中值半径的增大,∑nC20-/∑nC21+比值基本不变,反映了页岩孔喉半径达到一定级别后,喉道中大、小烃类分子扩散运动不受扩散能垒的影响,孔喉道中页岩油分子组成相对均质,页岩油可动性强;当∑nC20-/∑nC21+比值大于1时,页岩孔喉中值半径一般小于20 nm,此时热解S1一般小于3 mg/g,S1/w(TOC)<100 mg/g,且随S1S1/w(TOC)及页岩孔喉中值半径的减少,∑nC20-/∑nC21+比值快速升高,反映了页岩孔喉半径小于一定级别后,大分子烃类组分在喉道中扩散运动受到扩散能垒的抑制,页岩油可动性差,易流动的主要是低分子量烃,此时页岩游离油含量也较低。济阳坳陷页岩油流动孔喉下限半径在20 nm左右。

     

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出版历程
  • 收稿日期:  2018-08-09
  • 修回日期:  2018-10-17
  • 刊出日期:  2018-11-28

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