CO₂ capture and sequestration in deep saline aquifers is widely considered to be a leading option for controlling greenhouse gas emissions. One such possibility involves injection of supercritical carbon dioxide into a high-permeability geothermal reservoir. In addition to the benefit of sequestering the CO₂ in the reservoir, the CO₂ can be used to mine geothermal heat for utilization above ground. This paper describes one of the options for generating power from hot supercritical CO₂ obtained from CO₂ production wells connected to a geothermal reservoir, where the original source of the CO₂ is CO₂ captured from fossil-fired power plants or industrial processes. The cost of power generated using CO₂ produced from a geothermal reservoir with a gas turbine generation system is compared to the cost of generating power from a conventional geothermal steam power plant.

深层盐水中的CO ₂捕集和封存被广泛认为是控制温室气体排放的主要选择。一种这样的可能性涉及将超临界二氧化碳注入高渗透性地热储层中。除了将CO ₂隔离在储层中的好处外，CO ₂还可用于开采地热以用于地上利用。本文介绍了一种从与地热储层相连的CO ₂生产井中获得的热超临界CO ₂发电的选项之一，其中CO ₂的原始来源为CO ₂从化石发电厂或工业过程中捕获。将使用具有燃气轮机发电系统的地热库中产生的CO ₂产生的发电成本与常规地热蒸汽发电厂产生的发电成本进行了比较。