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基于等温吸附的页岩水分传输特征研究

沈伟军 李熙喆 鲁晓兵 万玉金 郭伟 左罗

沈伟军, 李熙喆, 鲁晓兵, 万玉金, 郭伟, 左罗. 基于等温吸附的页岩水分传输特征研究[J]. 力学学报, 2019, 51(3): 932-939. doi: 10.6052/0459-1879-18-229
引用本文: 沈伟军, 李熙喆, 鲁晓兵, 万玉金, 郭伟, 左罗. 基于等温吸附的页岩水分传输特征研究[J]. 力学学报, 2019, 51(3): 932-939. doi: 10.6052/0459-1879-18-229
Weijun Shen, Xizhe Li, Xiaobing Lu, Yujin Wan, Wei Guo, Luo Zuo. STUDY ON MOISTURE TRANSPORT CHARACTERISTICS OF SHALE BASED ON ISOTHERMAL ADSORPTION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(3): 932-939. doi: 10.6052/0459-1879-18-229
Citation: Weijun Shen, Xizhe Li, Xiaobing Lu, Yujin Wan, Wei Guo, Luo Zuo. STUDY ON MOISTURE TRANSPORT CHARACTERISTICS OF SHALE BASED ON ISOTHERMAL ADSORPTION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(3): 932-939. doi: 10.6052/0459-1879-18-229

基于等温吸附的页岩水分传输特征研究

doi: 10.6052/0459-1879-18-229
基金项目: 1) 国家自然科学基金(11802312,U1762216)和美国国家能源技术实验室(ESD14085)资助项目.
详细信息
    通讯作者:

    沈伟军

  • 中图分类号: TE312;

STUDY ON MOISTURE TRANSPORT CHARACTERISTICS OF SHALE BASED ON ISOTHERMAL ADSORPTION

  • 摘要: 研究页岩的水分传输特征至关重要,不仅有助于认识页岩的物理化学性质,而且也有助于评价页岩气的吸附扩散和流动能力.本文设计了页岩的水分传输实验装置,采用美国伍德福德和中国南方龙马溪组页岩为研究对象,开展了不同温度、不同湿度下页岩的水分传输实验,研究了页岩的水分传输特征和影响因素.结果表明,页岩的水分吸附属于II型曲线,包含着单分子层吸附、多分子层吸附和毛细凝聚的过程,GAB模型可用于描述页岩的水分吸附过程;水分吸附随着相对压力的增大而增强,有机碳含量和温度对页岩水分吸附起着增强作用,而方解石会抑制页岩的水分吸附;随着相对压力的增大,页岩的水分扩散系数呈现先增大后减小随后增加的趋势,其系数大约在8.73$\times$10$^{ - 9}\sim $5.95$\times $10$^{ - 8 }$m$^{2}$/s之间;伍德福德页岩的等量吸附热均大于龙马溪页岩的等量吸附热,这与其页岩的成熟度有关.研究结果为认识页岩的物理化学性质和力学性能以及评价页岩气的吸附流动能力提供参考依据.

     

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出版历程
  • 收稿日期:  2018-07-11
  • 刊出日期:  2019-05-18

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