中国盐穴氦气储库建设可行性与关键技术

中国石油盐穴储气库技术研究中心

氦气;盐穴;储库;选址;密封性;注采运行;战略储备

Feasibility and key technologies for the construction of salt cavern helium storage in China
ZHOU Zhaoheng,ZHOU Donglin,WANG Jianfu,WANG Lidong

PetroChina Research Center of Salt-Cavern UGS Technology

helium, salt cavern, storage, site selection, airtightness, injection and extraction, strategic reserve

DOI: 10.6047/j.issn.1000-8241.2024.03.003

备注

【目的】中国氦气资源稀缺,产量不足,对外依存度高且来源单一,氦气资源安全形势十分严峻。利用盐穴存储氦气是一项优势明显的大规模氦气储备技术,可有效保障氦气供应能力,提高用氦安全。然而中国目前暂无正在运行的地下盐穴氦气储库,相关研究和建设尚处于起步阶段,需要有针对性地开展可行性与关键技术研究。【方法】通过对国内外氦气资源及氦气储库建设情况的调研,结合中国盐穴储气库建设经验,分析中国盐穴氦气储库建设可行性,提出盐穴氦气储库选址评价、密封性评价、造腔建库、注采运行等关键技术发展建议。【结果】中国氦气断供风险大,需要加大储备。盐穴存氦安全性高、密封性好,适于大规模存储氦气。中国盐穴资源丰富且具有建库技术基础,建设盐穴氦气储库是加大中国氦气储备切实可行的方法。中国的建库地质条件、氦气资源条件等与国外不同,盐穴氦气储库建设需要有针对性地开展关键技术研究。东南沿海地区盐矿靠近氦气进口和消费地,运输成本低,可作为中国盐穴氦气储库建设的优选库址。【结论】建议中国盐穴氦气储库分阶段逐步建设,初期可建设1~2个盐穴储氦腔体,探索验证氦气储库建设技术,以保障中国氦气供给稳定,然后逐步扩建形成可满足5~10年氦气需求的战略储备。(图7表3,参[27]
[Objective] Due to the scarcity of helium resources, insufficient production, high external dependence and single source, the security situation of helium resources in China is very severe. Utilizing salt caverns for helium storage is a significantly advantageous technology for large-scale helium storage that can effectively guarantee the helium supply capacity and improve helium security. However, China is devoid of underground salt cavern helium storage in operation, and related research and construction are still in the stage of initial development, requiring targeted feasibility and key technology researches. [Methods] Based on an investigation of helium resources and helium storage construction as well as China’s experience in salt cavern gas storage construction, the feasibility of salt cavern helium storage construction in China was analyzed, and the suggestions on the development of key technologies for salt cavern helium storage were proposed, such as site evaluation, airtightness evaluation, cavern construction, storage construction, and helium injection and extraction. [Results] China is facing a high risk of helium supply disruption, necessitating the enlargement of reserve capacity. Salt cavern is suitable for large-scale helium storage for its satisfying performance in security and airtightness. The construction of salt cavern helium storage is feasible to increase China’s helium reserve, giving that China has abundant salt cavern resources and a technological base for cavern construction. In addition, it is necessary to perform targeted research on key technologies for salt cavern helium storage construction, considering the geological conditions and helium resource conditions for storage construction in China differ from those in foreign countries. The salt mine in the southeast coastal area is close to the import and consumption of helium, and the transportation cost is low, so it can be used as the preferred storage site for the construction of salt cavern helium storage in China. [Conclusion] It is recommended to construct salt cavern helium storage in China in stages. At the early stage, 1 to 2 helium storage caverns should be constructed to explore and verify the construction technology of helium storage and ensure a stable supply of helium in China, after that more caverns should be constructed gradually to build up a strategic reserve that can meet China’s helium demand for 5 to 10 years. (7 Figures, 3 Tables, 27 References)
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