影响二氧化碳电阻逆转的因素 地质储存区:量化研究
Chenguang Wang1, Tianyang Li1,2, Tao Yu1
1School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China.
Sensors (Basel, Switzerland)
|May 8, 2025
概括
本研究使用跨孔电阻断层扫描来分析二氧化碳储存区. 研究结果揭示了储存区特性和二氧化碳扩散如何影响阻力逆转,用于监测地质封存.
科学领域:
- 地质物理学 地质物理学
- 环境科学 环境科学
- 地质工程是地质工程.
背景情况:
- 二氧化碳 (CO2) 的地质封存是气候变化缓解的一个关键策略.
- 精确监测二氧化碳储存区对于确保封闭和评估储存稳定性至关重要.
- 电阻断层扫描 (ERT) 是一种潜在的地球物理方法,用于绘制与二氧化碳注入相关的地下变化的图像.
研究的目的:
- 为了研究二氧化碳储存区的电阻逆转特性,使用交叉钻孔ERT.
- 分析储存区体积,电阻,背景形成电阻和二氧化碳扩散对反转结果的影响.
- 探索这些参数影响二氧化碳储存和扩散成像的机制.
主要方法:
- 建立均的半空间和双层背景层学模型.
- 穿孔电阻断层扫描 (ERT) 的应用.
- 使用不完整的高斯-牛顿 (IGN) 逆转方法来处理ERT数据.
主要成果:
- 增加储存区体积显著影响反转电阻.
- 二氧化碳储存区的电阻在特定范围内被准确反转;在某个值以上,准确性会下降.
- 背景形成电阻极大地影响反转结果,其效果的上限.
- 二氧化碳扩散表现出指数级的电阻变化,注射前和注射后的电阻差异增强了扩散区的界限.
结论:
- 电阻逆转特征对二氧化碳储存区参数和扩散敏感.
- 该研究提供了ERT对二氧化碳储存监控的可靠性和局限性的见解.
- 这些发现支持使用ERT来评估地质二氧化碳封存的安全性和稳定性.
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