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Gas leaks detection using passive thermal infrared hyperspectral imaging

机译:使用被动热红外高光谱成像检测气体泄漏

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摘要

There are many types of natural gas fields including shale formations which are common especially in the St-Lawrence Valley (Canada). Since methane (CH_4), the major component of shale gas, is odorless, colorless and highly flammable, in addition of being a greenhouse gas, methane emanations and/or leaks are important to consider for both safety and environmental reasons. On this regard, passive remote sensing represents an interesting approach since it allows characterization of large areas from a safe location. In order to illustrate the potential of passive thermal infrared hyperspectral imaging for research on natural gas, imaging was carried out on a shale gas leak that unexpectedly happened during a geological survey near Hospital Enfant-Jesus (Quebec City, Canada) in December 2016. Quantitative methane imaging was carried out based on its unique infrared spectral signature. The results show how this novel technique could be used for advanced research on shale gases.
机译:包括页岩地层在内的天然气田类型很多,尤其是在加拿大的圣劳伦斯山谷中。由于页岩气的主要成分甲烷(CH_4)无味,无色且高度易燃,除了是温室气体外,出于安全和环境方面的考虑,甲烷排放和/或泄漏也很重要。在这方面,无源遥感代表了一种有趣的方法,因为它允许从安全位置表征大面积。为了说明被动热红外高光谱成像技术在天然气研究中的潜力,对页岩气泄漏进行了成像,该泄漏是在2016年12月在Enfant-Jesus医院(加拿大魁北克市)附近进行的地质调查中意外发生的。甲烷成像是基于其独特的红外光谱特征进行的。结果表明,该新技术如何可用于页岩气的高级研究。

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