CO_(2)深部咸水层封存选址的地质评价  

The site selection geological evaluation of the CO_(2) storage of the deep saline aquifer

作　　者：曹默雷 陈建平[1,2] CAO Molei;CHEN Jianping(School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China;Beijing Key Laboratory of Land and Resources Information Research and Development,Beijing 100083,China)

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]北京市国土资源信息研究开发重点实验室,北京100083

出　　处：《地质学报》2022年第5期1868-1882,共15页Acta Geologica Sinica

基　　金：核工业北京地质研究院项目基于地质大数据分析的矿产预测关键技术研究项目(编号73952020006)资助的成果。

摘　　要：深部咸水层封存是目前最具前景的CO_(2)地质封存方式。本文通过调研CO_(2)地质封存相关文献,对CO_(2)咸水层封存选址地质评价依据进行分类,总结咸水层封存涉及的定量研究方法并探讨目前CO_(2)地质封存中的不确定性问题。主要认识有:(1)CO_(2)咸水层封存选址的地质依据可根据在评价中的作用分为两类,第一类是用于可行性评价的通用依据,第二类是用于进一步筛选优选靶区的封存适宜性和安全性指标,其中封存适宜性评价针对的是更加细致的储层特征(相较于可行性评价),而安全性评价则集中在盖层适宜性、场地地震安全性、水文地质条件、地面场地地质条件、储层盖层空间分布和构造六个方面;(2)封存潜力评价方面,大范围的可行性评价可首选资料要求较低的面积法进行封存潜力评价,对小范围的优选靶区采取精度更高的容积法和包含更多封存机制的容量系数法;(3)目前CO_(2)地质封存中的不确定性问题主要在于相同依据在不同评价方面产生的不同影响、CO_(2)-水-岩反应对储集物性的影响、研究发现的特殊现象、多场耦合模拟研究不系统以及封存潜力计算中参数不确定问题。The CO_(2)storage of the deep saline aquifer is the most perspective CO_(2)geological storage way. This manuscript arranged papers which are related to researches of the CO_(2)geological storage, classifying geological conditions which is applied in the site selection evaluation of the saline aquifer CO_(2)storage, summarizing quantitative methods of the saline aquifer CO_(2)storage, and discussing main aspects of the uncertainty for the current CO_(2)geological storage. Current geological conditions for the site selection of the CO_(2)storage can be classified into two categories according to their different functions in the evaluation: the first category is the general condition for the feasibility evaluation and the second category is characteristics of the suitability and security of the storage which can be used to select the high-quality target area. Suitability features are more accurate features of reservoirs compared with the feasibility evaluation and the security evaluation focus on the suitability of cap rocks, the security of earthquakes, hydrogeological conditions, geological conditions of ground sites, the spatial distribution of reservoirs and cap rocks and structural features. The area method can be the prior consideration of the calculation of the storage volume in the large size area because of low requirements of materials. The volume method and the capacity coefficient method should be prior selection in the storage potential evaluation of high-quality target areas because of higher accuracy and the consideration of more storage mechanisms respectively. The uncertainty of the current geological evaluation of the saline aquifer storage lies in the following five aspects, which are respectively different impacts of geological factors in different aspects of evaluations, the uncertainty of the influence on the reservoir physical property produced by the CO_(2)-water-rock reactions, special phenomena of the study, the insufficient understanding on the mechanism of various numerical simulations, a

关 键 词：CO_(2)咸水层封存 地质依据 储层 定量研究 不确定性 

分 类 号：X701[环境科学与工程—环境工程]