Dubai’s state-owned Emirates National Oil Company (Enoc) has invited companies to submit bids on the expansion of its refinery in Jebel Ali, according to sources familiar with the project.

Contractors have been asked to submit technical engineering, procurement and construction (EPC) proposals on the tender by 16 November.

The brownfield project will add 20,000 barrels a day (b/d) to the refinery’s existing capacity of 120,000 b/d to help meet rising domestic fuel demand.

The refinery currently has two trains of condensate. Enoc plans to add two new processing units – jet and diesel hydrotreaters and an isomerisation unit – that will lead to the production of Euro V grade products such as high-octane gasoline, low-sulphur jet fuel and ultra-low sulphur diesel.

The front-end engineering and design (feed) study has been completed by US-based KBR, which won the contract for the study in March 2014.

Companies prequalified to bid for the EPC contract, which is estimated to be worth in the region of $1bn, include South Korea’s GS Engineering & Construction, UK-based Petrofac and Italy’s Saipem among other firms.

Established in 1999, the refinery processes condensate to produce refined products such as naphtha, jet fuel, reformate, diesel oil, fuel oil and liquefied petroleum gas (LPG) for local and export markets.

The most recent expansion of the refinery was completed in 2009 with US-based Foster Wheeler – now part of Amec Foster Wheeler – carrying out the EPC work.