According to one source at Al-Suwaidi, Aramco confirmed that the contractor had won the job in the first week of October. The plants will serve as oil distribution points across the kingdom.

The source says the deal originally covered 12 plants, but Aramco expanded it to 14 following talks with bidders.

The lump sum procure-and-build contract includes four plants in the northwest of the kingdom – Duba, Jouf, Tabuk and Turaif – and five in the southwest – Abha, Rabigh, Jizan, North Jeddah and Yanbu. The contract also covers the Qatif and Hasa bulk plants in the Eastern Province and the Qasim, North Riyadh and Sulayyil plants in the central region.

Al-Suwaidi will increase the petroleum, diesel and fuel oil storage capacities of the plants.

However, the source does not know the scale of the upgrade Aramco is seeking.

On 8 October, Aramco invited 20 companies to submit bids to build a $250m bulk plant at Wasea, southeast of Riyadh. Aramco has set a bid deadline of 14 November and plans to make an award by 20 December.

The winner has until 29 February 2012 to complete the plant.