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天然气地球科学

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页岩等温吸附/解吸影响因素研究

赵玉集,郭为，熊伟，左罗，高树生，刘洪林，苗雪   

  1. 1.中国矿业大学（北京），北京 100083；
    2.中国石油勘探开发研究院廊坊分院，河北 廊坊  065007;
    3.中国石油华北油田分公司勘探开发研究院，河北 任丘 062550
  • 收稿日期:2013-07-22 修回日期:2013-11-04 出版日期:2014-06-10 发布日期:2014-06-10
  • 通讯作者: 赵玉集zhaoyujishunli@sohu.com E-mail:zhaoyujishunli@sohu.com
  • 作者简介:赵玉集(1967-)，男，河南泌阳人，高级工程师，博士后，主要从事油气田开发研究. E-mail:zhaoyujishunli@sohu.com.
  • 基金资助:

    国家重大科技专项“页岩气开发机理及技术政策研究”(编号:2011ZX05018-005)资助.

Study of Impact Factors on Shale Gas Adsorption and Desorption

ZHAO Yu-ji，GUO Wei，XIONG Wei，ZUO Luo，GAO Shu-sheng，LIU Hong-lin，MIAO Xue   

  1. 1.College of Geosciences and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China;
    2.Research Institute of Petroleum Exploration and Development-Langfang Branch, Langfang 065007, China;
    3.Huabei Oilfield Exploration and Development Institute, PetroChina, Renqiu 062550, China
  • Received:2013-07-22 Revised:2013-11-04 Online:2014-06-10 Published:2014-06-10

PDF (PC)

656

摘要：

页岩吸附气含量对储量计算至关重要，吸附气解吸过程直接关系到页岩的产量。采用川南地区和昭通地区龙马溪组页岩样品，设计页岩吸附/解吸实验，研究页岩的等温吸附/解吸特征以及影响因素。实验结果表明:温度升高页岩最大吸附量(VL)下降，解吸率上升，并且两者都与温度呈现良好的线性关系；总有机碳含量(TOC)和黏土矿物含量均会影响页岩的吸附能力，TOC含量高的页岩最大吸附量与TOC呈正相关，TOC含量低的页岩最大吸附量与黏土矿物含量呈正相关；水分的存在会降低页岩的吸附能力同时也降低页岩的解吸率，含水率越高解吸剩余吸附量越大。

关键词: 页岩, 吸附, 温度, 水分, 黏土矿物, TOC

Abstract:

Adsorbed gas content is essential to the calculation of shale gas reserves,and adsorbed gas desorption process is directly related to the production of shale.Isothermal adsorption and desorption experiments under different conditions were carried out with Longmaxi shale samples collected from south of Sichuan and Zhaotong area.The results show that the maximum adsorption volume VL decreases with the increase of temperature and the desorption ratio increases with the increase of temperature,which both showed a good linear relationship with the temperature. TOC and clay mineral content will affect the shale gas adsorption capacity.The shale maximum adsorption volume has a positive correlation with TOC in shale with high TOC content,while the maximum adsorption volume and clay mineral content was positively correlated in shale with low TOC content.The presence of water will reduce the shale adsorption capacity and also the desorption ratio.The remaining adsorption volume after desorption increases with the moisture content.

Key words: Shale gas, Adsorption, Temperature, Moisture content, minerals, TOC

中图分类号: 

  • TE122.2

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