Capture and subsurface storage of CO₂ is widely viewed as being a necessary component of any strategy to minimise and control the continued increase in average global temperatures. Existing oil and gas reservoirs can be re-used for carbon storage, providing a substantial fraction of the vast amounts of subsurface storage space that will be required for the implementation of carbon storage at an industrial scale. Carbon capture and storage (CCS) in depleted reservoirs aims to ensure subsurface containment, both to satisfy safety considerations, and to provide confidence that the containment will continue over the necessary timescales. Other technical issues that need to be addressed include the risk of unintended subsurface events, such as induced seismicity. Minimisation of these risks is key to building confidence in CCS technology, both in relation to financing/liability, and the development and maintenance of public acceptance. These factors may be of particular importance with regard to CCS projects involving depleted hydrocarbon reservoirs, where the mechanical effects of production activities must also be considered. Given the importance of caprock behaviour in this context, several previously published geomechanical caprock studies of depleted hydrocarbon reservoirs are identified and reviewed, comprising experimental and numerical studies of fourteen CCS pilot sites in depleted hydrocarbon reservoirs, in seven countries (Algeria, Australia, Finland, France, Germany, Netherlands, Norway, UK). Particular emphasis is placed on the amount and types of data collected, the mathematical methods and codes used to conduct geomechanical analysis, and the relationship between geomechanical aspects and public perception. Sound geomechanical assessment, acting to help minimise operational and financial/liability risks, and the careful recognition of the impact of public perception are two key factors that can contribute to the development of a successful CCS project in a depleted hydrocarbon reservoir.

捕获和地下存储CO ₂被广泛认为是最小化和控制全球平均气温持续升高的任何战略的必要组成部分。现有的石油和天然气储集层可以重新用于碳存储，提供了实现工业规模的碳存储所需的大量地下存储空间的很大一部分。枯竭的储层中的碳捕集与封存（CCS）旨在确保地下围堵，以满足安全方面的考虑，并确保围堵将在必要的时间范围内继续存在。其他需要解决的技术问题包括意外地下事件的风险，例如诱发地震。这些风险的最小化对于树立CCS技术在资金/责任方面的信心至关重要，以及开发和维护公众认可度。对于涉及枯竭油气藏的CCS项目，这些因素可能特别重要，在这些项目中还必须考虑生产活动的机械影响。考虑到盖层行为在这种情况下的重要性，已确定并审查了几篇以前发表的枯竭油气储层的地质力学盖层研究，包括在七个国家（阿尔及利亚，澳大利亚，芬兰，法国，德国，荷兰，挪威，英国）。特别强调的是所收集数据的数量和类型，用于进行地质力学分析的数学方法和代码以及地质力学方面与公众认知之间的关系。