Natural CO2 Analogs for Carbon Sequestration
Natural CO2 Analogs for Carbon Sequestration
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用于碳封存的天然二氧化碳类似物
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
B. Tye
中科院分区：
文献类型：
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作者：
S. Stevens;B. Tye
该报告总结了在美国三个自然发生的地质CO{sub 2}领域进行的研究。这些油田是天然的类似物，可用于设计地质构造中人为CO{sub 2}的工程长期储存。为科罗拉多的McElmo Dome、亚利桑那州和新墨西哥州的St. Johns Dome以及密西西比的杰克逊Dome开发了地质、工程和操作数据库。这三个研究地点共储存了24亿吨（46 Tcf）的CO{sub 2}，相当于美国发电厂1.5年的排放量，其规模与最大的拟议封存项目相当。这三个CO{sub 2}气田提供了一系列科学上有用的对比地质环境（碳酸盐岩与砂岩储层;超临界与游离气体状态;正常压力与超压力），以及不同的商业开发阶段（大多数为未开发到成熟）。目前的研究主要依赖于CO{sub 2}油田运营商合作伙伴提供的现有数据，并辅以新的地球化学数据。对这些独特的天然CO{sub 2}积累的进一步研究可以进一步帮助指导工程CO{sub 2}储存场地的安全和经济有效的设计和操作方法的开发。
The report summarizes research conducted at three naturally occurring geologic CO{sub 2} fields in the US. The fields are natural analogs useful for the design of engineered long-term storage of anthropogenic CO{sub 2} in geologic formations. Geologic, engineering, and operational databases were developed for McElmo Dome in Colorado; St. Johns Dome in Arizona and New Mexico; and Jackson Dome in Mississippi. The three study sites stored a total of 2.4 billion t (46 Tcf) of CO{sub 2} equivalent to 1.5 years of power plant emissions in the US and comparable in size with the largest proposed sequestration projects. The three CO{sub 2} fields offer a scientifically useful range of contrasting geologic settings (carbonate vs. sandstone reservoir; supercritical vs. free gas state; normally pressured vs. overpressured), as well as different stages of commercial development (mostly undeveloped to mature). The current study relied mainly on existing data provided by the CO{sub 2} field operator partners, augmented with new geochemical data. Additional study at these unique natural CO{sub 2} accumulations could further help guide the development of safe and cost-effective design and operation methods for engineered CO{sub 2} storage sites.