The well-developed coal electricity generation and coal chemical industries have led to huge carbon dioxide(CO_(2))emissions in the northeastern Ordos Basin.The geological storage of CO_(2) in saline aquifers is an ef...The well-developed coal electricity generation and coal chemical industries have led to huge carbon dioxide(CO_(2))emissions in the northeastern Ordos Basin.The geological storage of CO_(2) in saline aquifers is an effective backup way to achieve carbon neutrality.In this case,the potential of saline aquifers for CO_(2) storage serves as a critical basis for subsequent geological storage project.This study calculated the technical control capacities of CO_(2) of the saline aquifers in the fifth member of the Shiqianfeng Formation(the Qian-5 member)based on the statistical analysis of the logging and the drilling and core data from more than 200 wells in the northeastern Ordos Basin,as well as the sedimentary facies,formation lithology,and saline aquifer development patterns of the Qian-5 member.The results show that(1)the reservoirs of saline aquifers in the Qian-5 member,which comprise distributary channel sand bodies of deltaic plains,feature low porosities and permeabilities;(2)The study area hosts three NNE-directed saline aquifer zones,where saline aquifers generally have a single-layer thickness of 3‒8 m and a cumulative thickness of 8‒24 m;(3)The saline aquifers of the Qian-5 member have a total technical control capacity of CO_(2) of 119.25×10^(6) t.With the largest scale and the highest technical control capacity(accounting for 61%of the total technical control capacity),the Jinjie-Yulin saline aquifer zone is an important prospect area for the geological storage of CO_(2) in the saline aquifers of the Qian-5 member in the study area.展开更多
碳捕集与封存(Carbon Capture and Storage,CCS)技术作为缓解全球气候变暖、减少CO_(2)排放的有效路径之一,其潜力评估至关重要。目前CCS技术主要包括CO_(2)强化石油(天然气)开采封存技术、CO_(2)驱替煤层气封存技术以及咸水层CO_(2)封...碳捕集与封存(Carbon Capture and Storage,CCS)技术作为缓解全球气候变暖、减少CO_(2)排放的有效路径之一,其潜力评估至关重要。目前CCS技术主要包括CO_(2)强化石油(天然气)开采封存技术、CO_(2)驱替煤层气封存技术以及咸水层CO_(2)封存技术3类。各类封存技术利用了不同的封存机制,其潜力评估方法也略有差别。油气藏封存和咸水层封存主要利用了构造圈闭储存、束缚空间储存、溶解储存、矿化储存等封存机制,煤层气封存主要利用了吸附封存机制。国内外学者和机构针对各类封存技术提出了相应的计算方法,依据其计算原理可归纳为4类物质平衡封存量计算法、有效容积封存量计算法、溶解机制封存量计算法以及考虑多种捕获机制的综合封存量计算法。通过对各类经典方法及其计算原理进行综述,剖析潜力封存量计算方法的内涵原理和应用场景,分析了CO_(2)地质封存潜力评价方法在实际应用中面临的问题,有助于提升我国的CCS潜力评价质量。展开更多
CCUS(Carbon Capture,Utilization and Storage,碳捕集、利用与封存)技术是减少化石能源发电和工业生产过程中CO_(2)排放的关键技术,也是我国实现碳中和的兜底技术。CO_(2)地质封存是CCUS技术的核心组成部分,决定了CCUS技术的发展潜力...CCUS(Carbon Capture,Utilization and Storage,碳捕集、利用与封存)技术是减少化石能源发电和工业生产过程中CO_(2)排放的关键技术,也是我国实现碳中和的兜底技术。CO_(2)地质封存是CCUS技术的核心组成部分,决定了CCUS技术的发展潜力和发展方向,建立适用我国地质特点的CO_(2)封存潜力评价方法,科学评估我国主要沉积盆地CO_(2)封存潜力是我国CCUS技术发展的基础。国外将CO_(2)地质封存潜力评价分为国家/州级筛选、盆地级评价、场址描述、场址应用4个阶段,并将封存地质体特征、区域地质、评估目的、地方保护、社会健康、封存安全和环境风险等作为主要指标,形成了一系列盆地级别评价指标体系,同时针对不同封存地质体,建立了CSLF(碳封存领导人论坛)法、DOE(美国能源部)法、欧盟法,ECOFYS和TNO-TING法等CO_(2)封存量计算方法。我国封存潜力评估整体处于起步阶段,尚未建立统一、系统的封存潜力评估方法,采用的封存潜力评价方法主要是基于层次分析法的模糊综合评价,并发展了封存潜力的次级盆地评价方法和CO_(2)封存量的溶解度计算方法。我国CO_(2)地质封存潜力巨大、方式多样,封存有利区域为渤海湾盆地、松辽盆地、鄂尔多斯盆地、准噶尔盆地、苏北盆地和四川盆地。由于中国地质条件的复杂性,采用不同评价方法评估得到的CO_(2)封存潜力差距较大,亟需对深部咸水层、正在开采或枯竭的油气田、深部不可采煤层、浅海等主要封存地质体开展CO_(2)封存潜力的精细评估。展开更多
Carbon dioxide(CO_(2))geological utilization and storage(CGUS)is the key link of CO_(2)capture,utilization,and storage(CCUS).The accurate characterization of the geological body structure is a vital prerequisite of CG...Carbon dioxide(CO_(2))geological utilization and storage(CGUS)is the key link of CO_(2)capture,utilization,and storage(CCUS).The accurate characterization of the geological body structure is a vital prerequisite of CGUS.This paper gives a review of the multi-scale three-dimensional geological structure characterization and site selection of CO_(2)storage.It shows that there is a lack of systematic and high-precision methods for transparency characterization of multi-scale three-dimensional engineering geological structure and hydrogeological structure of a CO_(2)storage site.There is no clear understanding of the fracture evolution and gas-liquid migration process of multi-scale geological body structure under the disturbance of CO_(2)injection.There is a lack of sufficient quantitative methods for the dynamic evaluation of CO_(2)geological storage potential.The geological suitability evaluation method for site selection of CO_(2)storage is rough and has poor applicability,which is difficult to satisfy the urgent needs of CGUS site selection in the whole process of CO_(2)sequestration industrialization in the future.Thus,it is required to conduct studies on the transparency characterization of geological body structure and intelligent site selection for CO_(2)storage,which is of great importance for CGUS engineering practice.展开更多
基金funded by the Top 10 key scientific and technological projects of CHN Energy in 2021 entitled Research and Demonstration of Technology for Carbon Dioxide Capture and Energy Recycling Utilization(GJNYKJ[2021]No.128,No.:GJNY-21-51)the Carbon Neutrality College(Yulin)Northwest University project entitled Design and research of large-scale CCUS cluster construction in Yulin area,Shaanxi Province(YL2022-38-01).
文摘The well-developed coal electricity generation and coal chemical industries have led to huge carbon dioxide(CO_(2))emissions in the northeastern Ordos Basin.The geological storage of CO_(2) in saline aquifers is an effective backup way to achieve carbon neutrality.In this case,the potential of saline aquifers for CO_(2) storage serves as a critical basis for subsequent geological storage project.This study calculated the technical control capacities of CO_(2) of the saline aquifers in the fifth member of the Shiqianfeng Formation(the Qian-5 member)based on the statistical analysis of the logging and the drilling and core data from more than 200 wells in the northeastern Ordos Basin,as well as the sedimentary facies,formation lithology,and saline aquifer development patterns of the Qian-5 member.The results show that(1)the reservoirs of saline aquifers in the Qian-5 member,which comprise distributary channel sand bodies of deltaic plains,feature low porosities and permeabilities;(2)The study area hosts three NNE-directed saline aquifer zones,where saline aquifers generally have a single-layer thickness of 3‒8 m and a cumulative thickness of 8‒24 m;(3)The saline aquifers of the Qian-5 member have a total technical control capacity of CO_(2) of 119.25×10^(6) t.With the largest scale and the highest technical control capacity(accounting for 61%of the total technical control capacity),the Jinjie-Yulin saline aquifer zone is an important prospect area for the geological storage of CO_(2) in the saline aquifers of the Qian-5 member in the study area.
文摘碳捕集与封存(Carbon Capture and Storage,CCS)技术作为缓解全球气候变暖、减少CO_(2)排放的有效路径之一,其潜力评估至关重要。目前CCS技术主要包括CO_(2)强化石油(天然气)开采封存技术、CO_(2)驱替煤层气封存技术以及咸水层CO_(2)封存技术3类。各类封存技术利用了不同的封存机制,其潜力评估方法也略有差别。油气藏封存和咸水层封存主要利用了构造圈闭储存、束缚空间储存、溶解储存、矿化储存等封存机制,煤层气封存主要利用了吸附封存机制。国内外学者和机构针对各类封存技术提出了相应的计算方法,依据其计算原理可归纳为4类物质平衡封存量计算法、有效容积封存量计算法、溶解机制封存量计算法以及考虑多种捕获机制的综合封存量计算法。通过对各类经典方法及其计算原理进行综述,剖析潜力封存量计算方法的内涵原理和应用场景,分析了CO_(2)地质封存潜力评价方法在实际应用中面临的问题,有助于提升我国的CCS潜力评价质量。
文摘CCUS(Carbon Capture,Utilization and Storage,碳捕集、利用与封存)技术是减少化石能源发电和工业生产过程中CO_(2)排放的关键技术,也是我国实现碳中和的兜底技术。CO_(2)地质封存是CCUS技术的核心组成部分,决定了CCUS技术的发展潜力和发展方向,建立适用我国地质特点的CO_(2)封存潜力评价方法,科学评估我国主要沉积盆地CO_(2)封存潜力是我国CCUS技术发展的基础。国外将CO_(2)地质封存潜力评价分为国家/州级筛选、盆地级评价、场址描述、场址应用4个阶段,并将封存地质体特征、区域地质、评估目的、地方保护、社会健康、封存安全和环境风险等作为主要指标,形成了一系列盆地级别评价指标体系,同时针对不同封存地质体,建立了CSLF(碳封存领导人论坛)法、DOE(美国能源部)法、欧盟法,ECOFYS和TNO-TING法等CO_(2)封存量计算方法。我国封存潜力评估整体处于起步阶段,尚未建立统一、系统的封存潜力评估方法,采用的封存潜力评价方法主要是基于层次分析法的模糊综合评价,并发展了封存潜力的次级盆地评价方法和CO_(2)封存量的溶解度计算方法。我国CO_(2)地质封存潜力巨大、方式多样,封存有利区域为渤海湾盆地、松辽盆地、鄂尔多斯盆地、准噶尔盆地、苏北盆地和四川盆地。由于中国地质条件的复杂性,采用不同评价方法评估得到的CO_(2)封存潜力差距较大,亟需对深部咸水层、正在开采或枯竭的油气田、深部不可采煤层、浅海等主要封存地质体开展CO_(2)封存潜力的精细评估。
基金supported by the National Natural Science Foundation of China(Grant No.42141009)the Key Research Program of the Institute of Geology and Geophysics,CAS(Grant No.IGGCAS-202201).
文摘Carbon dioxide(CO_(2))geological utilization and storage(CGUS)is the key link of CO_(2)capture,utilization,and storage(CCUS).The accurate characterization of the geological body structure is a vital prerequisite of CGUS.This paper gives a review of the multi-scale three-dimensional geological structure characterization and site selection of CO_(2)storage.It shows that there is a lack of systematic and high-precision methods for transparency characterization of multi-scale three-dimensional engineering geological structure and hydrogeological structure of a CO_(2)storage site.There is no clear understanding of the fracture evolution and gas-liquid migration process of multi-scale geological body structure under the disturbance of CO_(2)injection.There is a lack of sufficient quantitative methods for the dynamic evaluation of CO_(2)geological storage potential.The geological suitability evaluation method for site selection of CO_(2)storage is rough and has poor applicability,which is difficult to satisfy the urgent needs of CGUS site selection in the whole process of CO_(2)sequestration industrialization in the future.Thus,it is required to conduct studies on the transparency characterization of geological body structure and intelligent site selection for CO_(2)storage,which is of great importance for CGUS engineering practice.
