CO2 GEOLOGICAL SEQUESTRATION AND EVALUATION OF CO2 GEOLOGICAL SEQUESTRATION POTENTIAL IN CHINA
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
万方数据
二氧化碳(CO2)捕获、利用和封存(CCUS)技术是减少人类活动排放CO2的关键技术,也是我国实现"碳中和、碳达峰"目标的重要手段.面对我国复杂的地质条件,构建适用于我国的CO2地质封存评价体系,有针对性的选取数学模型评价我国主要沉积盆地CO2封存潜力,是我国发展CCUS技术的前提.本文根据国内外学者研究成果,阐述了 CO2深部咸水层封存、驱油封存和驱气封存的机制,在我国尚未建立统一CO2地质封存评价体系的情况下,从区域地质条件、储存适宜性、经济性和社会影响4方面提出 了适用于我国的CO2地质封存评价体系;结合国际CCUS项目案例评价了CO2地质封存的安全性,并通过碳收集领导人论坛(CSLF)和美国能源部(DOE)等机构提出的数学模型,分别计算了我国难开采煤层、深部咸水层和枯竭油气藏的CO2储量,科学评价了我国主要沉积盆地CO2地质封存潜力,结果表明中国主要沉积盆地CO2理论封存总量高达41 244.87 × 108 t.
The global application of carbon dioxide capture,utilization,and sequestration(CCUS)technology has made carbon dioxide(CO2)geological sequestration an important means of achieving the goal of"carbon neutrality and carbon peaking".In the face of China's complex geological conditions,constructing a CO2 geological sequestration evaluation system suitable for China and selecting targeted mathematical models to evaluate the CO2 sequestration potential of major sedimentary basins in China is a prerequisite for the development of CCUS technology in China.Based on the research results of domestic and foreign scholars,this article elaborates on the mechanisms of CO2 deep saline water layer sequestration,oil displacement sequestration,and gas displacement sequestration.In the absence of a unified CO2 geological sequestration evaluation system in China,a CO2 geological sequestration evaluation system suitable for China is proposed from four aspects:regional geological conditions,sequestration suitability,economy,and social impact.The safety of CO2 geological sequestration was evaluated based on international CCUS project cases.Using mathematical models proposed by institutions such as the Carbon Collection Leaders Forum(CSLF)and the United States Department of Energy(DOE),the CO2 reserves of difficult to extract coal seams,deep saline water layers,and depleted oil and gas reservoirs in China were calculated,and the CO2geological sequestration potential of major sedimentary basins in China was scientifically evaluated.The results indicate that China has enormous potential for CO2 sequestration,with a theoretical total sequestration capacity of 41 244.87 × 108 tons.
CO2 geological sequestrationsequestration mechanismevaluation systemsequestration poten-tial
万方数据
