Free gas transport in the subsurface: Analogues and applications

地下自由气体传输：类似物和应用

• 批准号: RGPIN-2016-06509
• 负责人: Ryan, Cathryn
• 金额: $ 2.11万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=634024
• 关键词: Free; gas; transport; subsurface; Analogues

We know free gas transport occurs in the shallow subsurface because one can see its expression as bubbles in springs, wetlands, geysers, and as free gas ‘breakouts’ during excavations and drilling. Yet we know little about free gas migration in the ‘shallow’, or non-saline, groundwater zone. There is almost no mention of free gas transport in groundwater textbooks, and virtually no conceptual diagrams in either textbooks or the published literature. It is consequently difficult to design effective field approaches to identify, monitor, and mitigate gas fluxes. In essence we don’t know what free gas transport ‘looks like’ conceptually in the subsurface, nor do we know how to investigate or monitor for its occurrence.

我们知道自由气体运输发生在浅层地下，因为我们可以看到它在泉水、湿地、间歇泉中的气泡表现，以及在挖掘和钻探过程中自由气体的“爆发”。然而，我们对“浅层”或不含盐的地下水区的自由气体运移知之甚少。地下水教科书中几乎没有提到自由气体输送，教科书和已发表的文献中也几乎没有概念图。因此，很难设计有效的现场方法来识别、监测和减轻气体通量。从本质上讲，我们不知道地下自由气体传输的概念“样子”，也不知道如何调查或监测它的发生。