Underground storage in main countries are provided as following (sort by country initials): :

China, Mainland

Europe For details of Europe Underground Storage, please see here https://www.gie.eu/index.php/gie-publications/maps-data/gse-storage-map

Russia Source: https://www.gazprom.com/about/production/underground-storage/

Ukraine Source: https://naftogaz-europe.com/article/en/englstorage

Please contact customer support if you have any further questions - RBAC, Inc. support line (281) 506-0588 ext. 125, from 9:00 am to 5:00 pm CT