Dynamic characteristics of compressed air energy storage system embedded with abandoned oil well storage: A numerical approach

IF 10.1 1区工程技术 Q1 ENERGY & FUELS

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-09 DOI:10.1016/j.energy.2026.140378

Hua Yang , Jiachao Wu, Jingyu Cui, Cong Du, Liang Tian, Fuxing Zhao

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引用次数: 0

Abstract

Compressed air energy storage (CAES) is a promising solution for large-scale energy storage. This study develops a three-stage compression and two-stage expansion thermal-storage CAES (TS-CAES) system with abandoned oil well (AOW) storage. Simulation results show: (1) During the energy storage stage, the underground well (UG) achieves the fastest pressure buildup rate, reaching 15 MPa in 6.3 h, 1.0 h faster than the first on-ground tank (OG1) and 1.6 h faster than the second on-ground tank (OG2); (2) During the energy release stage, UG maintains the most stable internal temperature, with an energy release duration of 4.2 h, shorter than OG1 (4.5 h) and OG2 (5.3 h), thus ensuring stable turbine inlet conditions; (3) UG benefits from geothermal coupling with surrounding strata (343 K), which accelerates pressurization, stabilizes discharge, and enables the highest recoverable waste heat (6.95 × 10⁴ MJ), surpassing OG1 and OG2 by over 10%. This geothermal contribution transforms the UG chamber from a passive air reservoir into an active energy conversion component. This study confirms the feasibility of using abandoned oil well as alternative air storage tanks (ASTs) in TS-CAES systems, providing theoretical support for their integration with geothermal resources to optimize large-scale energy storage performance.

查看原文本刊更多论文

基于废弃油井库的压缩空气储能系统动态特性的数值分析

压缩空气储能（CAES）是一种很有前途的大规模储能解决方案。本研究开发了一种具有废弃油井（AOW）储存的三级压缩两级膨胀储热CAES （TS-CAES）系统。仿真结果表明：(1)在蓄能阶段，地下井（UG）的蓄压速率最快，在6.3 h内达到15 MPa，比地面第一储罐（OG1）快1.0 h，比地面第二储罐（OG2）快1.6 h；(2)在能量释放阶段，UG保持最稳定的内部温度，能量释放持续时间为4.2 h，短于OG1 （4.5 h）和OG2 (5.3 h)，从而保证了涡轮进口条件的稳定；(3) UG利用与周围地层（343 K）的地热耦合，加速加压，稳定排放，最大可回收余热（6.95 × 104 MJ），超过OG1和OG2 10%以上。这种地热贡献将UG室从被动空气储层转变为主动能量转换组件。本研究证实了废弃油井作为替代储气罐在TS-CAES系统中的可行性，为其与地热资源的整合优化大规模储能性能提供了理论支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Energy 工程技术-能源与燃料

CiteScore

15.30

自引率

14.40%

发文量

审稿时长

14.2 weeks

期刊介绍： Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.