Carbon isotopic constraints on CO2 degassing in cold-water Geysers, Green River, Utah
Carbon isotopic constraints on CO2 degassing in cold-water Geysers, Green River, Utah
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犹他州格林河冷水间歇泉中二氧化碳脱气的碳同位素限制
DOI：
10.1016/j.egypro.2009.01.307
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Assayag N
中科院分区：
文献类型：
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作者：
Assayag N
犹他州中东部格林河的冷水间歇泉源自小大沃什断层带和盐沃什断层带沿线的天然泉水，以及废弃的油井和水井。这些间歇泉是由源自侏罗纪纳瓦霍砂岩的富含二氧化碳的水中的二氧化碳脱气驱动的。在这里，我们讨论使用水和气体的 δ13C 分析来估计上升水域 CO2 饱和的深度。在发生二氧化碳从二氧化碳储层快速逸出的罕见事件时，这是一个潜在的重要控制措施。在 Green River 中，它对于计算纳瓦霍砂岩中流体-矿物反应的动力学也很重要，作为预测碳储存库中二氧化碳的命运的类比。
Cold-water geysers at Green River, in east central Utah are sourced by natural springs situated along the Little Grand Wash and Salt Wash faults zones, as well as abandoned oil and water wells. The intermittent geysers are driven by degassing of CO2from CO2-rich waters sourced from the Jurassic Navajo sandstone. Here we discuss use of δ13C analyses of water and gases to estimate the depth at which the ascending waters become CO2saturated. This is a potentially important control in the unlikely event of rapid CO2escape from CO2reservoirs. In Green River, it is also important for calculation of the kinetics of fluid-mineral reactions in the Navajo sandstone as an analogue for predicting the fate of CO2in carbon storage reservoirs.