枯竭气藏储氢的可行性及经济性分析——以艾伯塔省为例

IF 5.5 0 ENERGY & FUELS
Xiao Yang , Wei Cao , Shuaichen Liu , Ning Qi , Shengnan Chen
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引用次数: 0

摘要

枯竭气藏中的地下储氢(UHS)是解决阿尔伯塔省等地区季节性能源失衡的一个有希望的解决方案,在这些地区,夏季可再生电力过剩与冬季高需求形成鲜明对比。目前,大多数现有研究都是基于合成油藏模型,没有充分考虑到地质非均质性、现场条件下观察到的操作限制,也没有充分考虑到技术性能和经济可行性的综合优化。本研究调查了UHS在艾伯塔省Edson组近枯竭气藏中的可行性和经济潜力。多种与氢相关的机制,包括渗透率滞后、结构俘获、扩散性、溶解度和缓冲气体的影响,被明确地模拟,提供了一个更现实的存储动力学评估。结合Pareto非支配排序,开发了一种新的多目标麻雀搜索算法(MOSSA),以同时最大化氢采收率和净现值(NPV),同时考虑了整数和连续的操作变量,如井数、位置、注入速率和转换时间。结果表明,与基本情况相比,最佳井配置可将氢气采收率提高10%,在第10年的经济情景中,预计收入将超过2378万加元。敏感性分析表明,压力和井排对储层性能影响显著,而储层机制对储层性能影响最小。这项研究为大规模UHS在实际现场的部署提供了一个技术和经济上强大的框架,解决了关键的知识差距,并支持阿尔伯塔省向低碳能源系统的过渡。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Feasibility and economic analysis of hydrogen seasonal storage in depleted gas reservoirs: A case study in Alberta
Underground hydrogen storage (UHS) in depleted gas reservoirs is a promising solution to address seasonal energy imbalances in regions like Alberta, where surplus renewable electricity in summer contrasts sharply with high winter demand. At present, most existing studies are based on synthetic reservoir models and do not adequately account for geological heterogeneity, operational constraints observed in field conditions, or the integrated optimization of technical performance and economic viability. This study investigates the feasibility and economic potential of UHS in a near-depleted gas reservoir within the Edson Formation, Alberta. Multiple hydrogen-related mechanisms, including permeability hysteresis, structural trapping, diffusivity, solubility, and the effect of cushion gas are explicitly simulated, offering a more realistic assessment of storage dynamics. A novel multi-objective Sparrow Search Algorithm (MOSSA) combined with Pareto non-dominated ranking is developed to simultaneously maximize hydrogen recovery factor and Net Present Value (NPV), incorporating both integer and continuous operational variables such as well count, location, injection rates, and conversion timing. Results show that optimal well configurations improve hydrogen recovery by up to 10 % over the base case, with economic scenarios achieving projected revenues exceeding CAD 23.78 million in the tenth year. Sensitivity analysis reveals that pressure and well scheduling significantly affect performance, while storage mechanisms exert minimal impact. This research provides a technically and economically robust framework for large-scale UHS deployment in real field settings, addressing key knowledge gaps and supporting Alberta's transition to a low-carbon energy system.
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