• 主题
高级搜索  >
历史搜索 清空历史
首页> 中文期刊> 《地下水科学与工程：英文版》 >Sensitivity assessment of strontium isotope as indicator of polluted groundwater for hydraulic fracturing flowback fluids produced in the Dameigou Shale of Qaidam Basin

Sensitivity assessment of strontium isotope as indicator of polluted groundwater for hydraulic fracturing flowback fluids produced in the Dameigou Shale of Qaidam Basin

         
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Hydrogeochemical processes that would occur in polluted groundwater and aquifer system,may reduce the sensitivity of Sr isotope being the indicator of hydraulic fracturing flowback fluids(HFFF)in groundwater.In this paper,the Dameigou shale gas field in the northern Qaidam Basin was taken as the study area,where the hydrogeochemical processes affecting Sr isotope was analysed.Then,the model for Sr isotope in HFFF-polluted groundwater was constructed to assess the sensitivity of Sr isotope as HFFF indicator.The results show that the dissolution can release little Sr to polluted groundwater and cannot affect the εSr(the deviation of the 87Sr/86Sr ratio)of polluted groundwater.In the meantime,cation exchange can considerably affect Sr composition in the polluted groundwater.The Sr with low εSr is constantly released to groundwater from the solid phase of aquifer media by cation exchange with pollution of Quaternary groundwater by the HFFF and it accounts for 4.6% and 11.0% of Sr in polluted groundwater when the HFFF flux reaches 10% and 30% of the polluted groundwater,respectively.However,the Sr from cation exchange has limited impact on Sr isotope in polluted groundwater.Addition of Sr from cation exchange would only cause a 0.2%and 1.2% decrease in εSr of the polluted groundwater when the HFFF flux reaches 10% and 30% of the polluted groundwater,respectively.These results demonstrate that hydrogeochemical processes have little effect on the sensitivity of Sr isotope being the HFFF indicator in groundwater of the study area.For the scenario of groundwater pollution by HFFF,when the HFFF accounts for 5%(in volume percentage)of the polluted groundwater,the HFFF can result in detectable shifts of εSr(Δ_(εSr)=0.86)in natural groundwater.Therefore,after consideration of hydrogeochemical processes occurred in aquifer with input of the HFFF,Sr isotope is still a sensitive indicator of the Quaternary groundwater pollution by the HFFF produced in the Dameigou shale of Qaidam Basin.

著录项

  • 来源
    《地下水科学与工程：英文版》 |2021年第2期|P.93-101|共9页
  • 作者

    Zhao-xian Zheng; Xiao-shun Cui; Pu-cheng Zhu; Si-jia Guo;

  • 作者单位

    Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological Sciences Shijiazhuang 050061 ChinaKey Laboratory of Groundwater Science and Engineering Ministry of Natural Resources Shijiazhuang 050061 China;

    Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological Sciences Shijiazhuang 050061 ChinaKey Laboratory of Groundwater Science and Engineering Ministry of Natural Resources Shijiazhuang 050061 China;

    Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological Sciences Shijiazhuang 050061 ChinaKey Laboratory of Groundwater Science and Engineering Ministry of Natural Resources Shijiazhuang 050061 China;

    Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological Sciences Shijiazhuang 050061 ChinaKey Laboratory of Groundwater Science and Engineering Ministry of Natural Resources Shijiazhuang 050061 China;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 水文地质学与工程地质学;
  • 关键词

    Dameigou shale gas; Groundwater pollution; Hydraulic fracturing flowback fluids; Strontium isotope; Hydrogeochemical modelling;

    机译：Dameigou页岩气;地下水污染;液压压裂流动液;锶同位素;水力地球化学建模;
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号