使用环境度测量来量化来自非传统石油和天然气运营的挥发性有机化合物排放量
Weixin Zhang1,2, Da Pan1,2, I-Ting Ku1
1Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado 80521, United States.
Environmental science & technology
|December 16, 2025
概括
非传统的石油和天然气开发 (UOGD) 的VOC排放量因运营而异. 使用合成泥土和卷轴管道进行钻探造成的排放量最多,而改进的回流实践显著减少了空气污染物.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 能源发展 能源发展
背景情况:
- 非传统的石油和天然气开发 (UOGD) 使用先进的技术,增加了对挥发性有机化合物 (VOC) 排放的担忧.
- 由于潜在的环境和健康影响,对UOGD的准确排放估计至关重要,但目前的数据仍然不确定.
研究的目的:
- 在UOGD期间量化特定操作的VOC排放率.
- 将测量的排放量与现有的估计模型进行比较.
主要方法:
- 利用分散模型模拟和一种新的排放逆转技术.
- 从科罗拉多州布鲁姆菲尔德的10个监测站点分析了四年的每周空气样 (48种VOC) (2019-2022年).
- 钻井,液压压裂,卷轴管道/磨合,回流和生产操作的特征排放.
主要成果:
- 采用合成泥土进行的钻井和卷状管道操作显示了最高的NMVOC排放率 (分别为2.8g/s和1.1g/s的中位数).
- 在回流过程中,NMVOC和排放率明显低于之前报告的值 (96%和98%的减少).
- 发现环保署的非点油气排放估计工具低估了来自钻井泥和回流绿色完成的VOC.
结论:
- 在UOGD运行阶段,VOC排放率有很大差异.
- 改进的管理实践,特别是回流,有效地减少了空气污染物排放.
- 目前的排放模型可能无法完全捕获来自特定UOGD活动的VOC释放,例如钻井泥挥发和回流.
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