FILE PHOTO: General view of Saudi Aramco's Ras Tanura oil refinery and oil terminal in Saudi Arabia May 21, 2018. REUTERS/Ahmed Jadallah/File Photo

LONDON (Reuters) - Saudi Arabia had 73.1 million barrels of crude oil in three major storage sites inside the country as of early September, according to satellite data and analytics firm Ursa Space Systems.

The kingdom said it would be able to meet its customers’ demands following attacks on its oil infrastructure on Saturday with its ample storage but some deliveries had been disrupted.

At the country’s key export terminal Ras Tanura, Ursa said it observed 39.2 million barrels in storage, or about 60% of tank capacity, on Sept. 5.

Ursa said that Ras Tanura’s storage has ranged from 35 to 45 million barrels over the last 12 months.

Ursa observed 31.1 million barrels at Yanbu on Sept. 9 and 2.8 million barrels at Khafji on Sept. 5.

The firm added that Yanbu storage was at about 60% of capacity and Khafji at around 25%. It added that Yanbu’s stocks had averaged 27.1 million barrels over the last year.

U.S.-based Ursa uses a network of radar satellites to monitor global oil storage as well as other key infrastructure.