摘要
在碳中和战略背景下,页岩气因其低碳、高效的特性,已成为非常规天然气开发的重要方向。然而,随开发规模持续扩大,开采过程中伴生的苯系物污染问题逐渐凸显。系统梳理了页岩气体系中苯系物的形成机理及其多源贡献特征,总结了干酪根热解、微生物代谢与压裂液化学添加剂转化三类主要生成路径,并分析了不同类型干酪根在芳香化演变过程中的反应阶段特征及热力学控制因素。最后,结合现有研究进展,展望了未来在多尺度热解模拟、微生物代谢贡献定量化及污染风险模型构建等方面的研究方向。厘清苯系物在页岩体系中的多相生成机制与源汇关系,对于建立环境风险预警模型与制定可持续开发策略具有重要意义,也为降低页岩气开发过程中的环境污染风险提供了理论支持与方法参考。
Against the backdrop of carbon neutrality,shale gas—an unconventional natural gas resource with low carbon emissions and high efficiency—has experienced rapid development,while the accompanying pollution from benzene series compounds has become increasingly concerning.This review systematically summarizes the formation mechanisms and multi-source characteristics of BTEX compounds in shale gas systems.It analyzes three key generation pathways,including kerogen pyrolysis,microbial metabolism,and the transformation of fracturing fluid additives.Finally,it outlines future research directions in multi-scale pyrolysis simulation,quantitative assessment of microbial contributions,and risk model development.Clarifying the multiphase generation mechanisms and source-sink relationships of BTEX provides a theoretical foundation for establishing environmental risk early-warning models and formulating sustainable development strategies to mitigate pollution during shale gas exploitation.
作者
张博飞
马岚婷
刘佳丽
鱼涛
屈撑囤
ZHANG Bofei;MA Lanting;LIU Jiali;YU Tao;QU Chengtun(Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields,Xi’an Shiyou University,Xi’an 710065,China;Engineering Research Center of Oil and Gas Field Chemistry,Universities of Shaanxi Province,Xi’an Shiyou University,Xi’an 710065,China)
出处
《应用化工》
北大核心
2025年第11期2922-2928,共7页
Applied Chemical Industry
基金
国家自然科学基金(42207462)。
关键词
页岩气
干酪根热解
苯系物
微生物降解
水力压裂
shale gas
kerogen pyrolysis
BTEX
microbial degradation
hydraulic fracturing
