水下储存装备是基于油水置换技术的一种独立的存储单元，提供海上多样化介质存储，是海上能源开发和利用的重要装备。分析了未来水下储存装备可能的5种应用场景，包括浅海边际油田开发、水下储能技术、水下甲醇和液氨储存技术、水下LCO2储存技术和海底化学药剂储存和注入技术等。在浅海边际油田，采用综合处理平台、水下储油装备与穿梭油轮相结合的模式，提高成本适应性和储存量定制灵活性；为海上风电平台提供水下储能技术（水下压缩空气储能与水下储氢），保证外输电的稳定性，减轻平台上部空间存储局限性；海上风电也可转化为甲醇和液氨，采用水下存储方案，省去平台存储单元，降低总体投资；在水下安装LCO2存储装备代替回注平台存储，可提高LCO2储存效率和环境适应性；采用海底化学药剂储存和注入技术，可显著提升化学药剂系统的安全性、成本效益和注入精确性。

Underwater storage facilities， leveraging oil-water displacement technology， serve as independent storage units that provide diversified media storage at sea and are essential for the development and utilization of marine energy. This paper analyzes five potential application scenarios for future underwater storage facilities， including the development of marginal oil fields in shallow waters， underwater energy storage technology， underwater methanol and ammonia storage technology， underwater carbon dioxide storage technology， and the storage and injection technology of chemical reagents on the seabed. In marginal oil fields， a combined approach using an integrated processing platform， underwater storage facilities， and shuttle tankers can enhance cost adaptability and the flexibility of storage capacity customization. Underwater energy storage technology (underwater compressed air energy storage and underwater hydrogen storage) is provided for offshore wind platforms to ensure the stability of power transmission and reduce the limitations of storage space on the platform. Offshore wind power can also be converted into methanol and ammonia， by adopting underwater storage solutions. The storage units on the platform can be canceled， thereby reducing overall investment. By installing LCO2 storage facilities underwater instead of storing it on the injection platform， the efficiency of LCO2 storage and its environmental adaptability can be improved. The use of seabed chemical reagent storage and injection technology significantly enhances the safety， cost-effectiveness， and injection accuracy of the chemical reagent system.