The potential of noble gas tracers for CO 2 monitoring and early warning tracers for leakage
The potential of noble gas tracers for CO 2 monitoring and early warning tracers for leakage
复制标题
惰性气体示踪剂用于 CO 2 监测和泄漏预警示踪剂的潜力
DOI：
10.1002/ghg.1342
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Gilfillan S
中科院分区：
文献类型：
--
作者：
Gilfillan S
温室气体：一段时间以来，对储存的二氧化碳泄漏到环境中的可能性的担忧一直是一个问题。你在爱丁堡大学开展的监测二氧化碳泄漏的工作在减轻这些担忧方面取得了重大进展。你能给我们介绍一下这项工作的背景以及这项技术实际上是如何工作的吗？吉尔菲兰：该技术基于对来自世界各地深层天然CO2储层的CO2样品中的氦、氖和氙等惰性气体的分析。这些储层在地质学上与天然甲烷气储层相似，但它们含有二氧化碳，具有独特的稀有气体指纹，与大气中的稀有气体不同。氦的情况尤其如此，因为氦比空气轻，因此会从大气中流失到太空中。我们研究的一个储层是位于美国亚利桑那州和新墨西哥州边界的圣约翰圆顶天然二氧化碳储层。在这一储层之上，我们发现了大量的陆源碳酸盐岩，称为碳酸盐岩。钙华是由碳酸钙从富含溶解CO2的沃茨中沉淀而成，因此在圣约翰圆顶附近发现的大量钙华表明富含溶解CO2的沃茨迁移到地表的历史很长。我们想确定溶解的CO2是否仍在迁移到地表，因此我们对CO2水库上方的浅层地下水进行了调查。我们测量了地下水中的惰性气体指纹，在大多数样本中，我们发现了与二氧化碳惰性气体指纹的决定性联系。
GHG: Concern related to the potential for stored CO2 to leak into the environment has been an issue for some time. The work that you have carried out at Edinburgh University to monitor CO2 leaks has made significant progress in mitigating these concerns. Can you talk us through some of the background to the work and how the technology actually works? Gilfillan: The technique is based on analysis of the noble gases such as helium, neon, and xenon in samples of CO2 from deep natural CO2 reservoirs around the world. These reservoirs, which are geologically similar to natural methane gas reservoirs except they contain CO2, have unique fingerprints of noble gases which are distinct from those found in the atmosphere. This is particularly the case for helium, which is lighter than air and hence is lost to space from the atmosphere.One of the reservoirs we studied was the St John’s Dome natural CO2 reservoir, located on the border of Arizona and New Mexico in the USA. Above this reservoir we found a large amount of terrestrially derived carbonate rocks known as travertines. Travertines are formed by the precipitation of calcium carbonate from waters rich in dissolved CO2, hence the large amount of travertines found in the vicinity of St John’s Dome indicated a long history of waters rich in dissolved CO2 migrating to the surface. We wanted to determine if dissolved CO2 was still migrating to the surface so we undertook an investigation of the shallow groundwater above the CO2 reservoir. We measured the noble gas fingerprints in this groundwater and in the majority of samples we discovered a conclusive link to the noble gas fingerprint of the CO2
影响因子：
30.7
作者：
V. Scott;S. Gilfillan;Nils Markusson;H. Chalmers;R. Haszeldine
通讯作者：
V. Scott;S. Gilfillan;Nils Markusson;H. Chalmers;R. Haszeldine