地下咸水层储氢数值模拟技术发展现状

Development Statues of Numerical Simulation Technology for Underground Hydrogen Storage in Saline Aquifers

在全球倡导能源转型、节能减排的背景下,高效储存、利用“绿氢”已成为能源产业未来发展的重要趋势,地下咸水层储氢也随之成为一种极具潜力的新型大规模储能技术。调研总结咸水层储氢库发展现状,阐明数值模拟技术在氢气-咸水流体系统的研究及应用进展,总结热-渗-力-化多场(thermal-hydrodynamic-mechanical-chemical, THMC)耦合数值模拟方法的技术瓶颈。结果表明:地下咸水层储氢技术具有安全可控、高效灵活、储能容量大等优势,其成熟应用可同时实现经济、社会、生态效益“共赢”;数值模拟方法是研究地下储氢(underground hydrogen storage, UHS)的有效手段,但该方法仍处在发展初级阶段,数值模拟器和全局算法的优化有助于实现咸水层储氢库工程的设计;运用注采方案设计、人工智能等技术能为优化提供一定参考。

Under the background of global advocacy of energy transition and energy conservation and emission reduction,efficient storage and“green hydrogen”utilization has become an important trend in the future development of energy industry,and underground hydrogen storage in saline aquifers has also become a new large-scale energy storage technology with great potential.The development statues of hydrogen storage reservoir in saline aquifers was reviewd,the research and application progress of numerical simulation method applied in hydrogen-saline system were illustrated,and the technical difficulties were concluded in thermal-hydrodynamicmechanical-chemical(THMC)coupling numerical simulation models and methods.The results show that underground hydrogen storage in saline aquifers has the advantages of safety,controllability,high efficiency and flexibility,and large storage capacity,and its mature application can achieve a win-win situation of economic,social and ecological benefits;numerical simulation method is an effective means to study underground hydrogen storage(UHS)while its still in the initial developing stage.The optimization of numerical simulation and global algorithm is helpful to realize the design of saline reservoir engineering.Applying injection-production scheme designing,artificial intelligence technology can provide certain references for optimization.