Contractors are expected to submit commercial proposals on the phase 3 development of Abu Dhabi’s Rumaitha and Shanayel onshore oil fields on 19 November, after the bid deadline was extended, according to sources close to the bidding process.

Project operator Abu Dhabi Company for Onshore Oil Operations (Adco) tendered the estimated $1bn engineering, procurement and construction (EPC) contract in the second quarter of 2013 and received technical bids in the third quarter.

According to sources, the contractors submitting technical bids included:

The deal is likely to be awarded in the first quarter of 2014, after commercial proposals are submitted.

The Rumaitha and Shanayel fields form part of Adco’s North East Bab asset, which is located 31 kilometres from Abu Dhabi city and also includes the Al-Dabbiya field.

North East Bab has the capacity to produce about 110,000 barrels a day (b/d) – about 8 per cent of Adco’s total production – and this capacity is due to be doubled after the third-phase expansion project’s completion.

The package for the expansion of the Al-Dabbiya field is expected to be tendered in 2014, with Adco currently in the process of awarding the front-end engineering and design (feed) contract.

While Rumaitha and Shanayel are located onshore south of Abu Dhabi city, Al-Dabbiya lies in a shallow coastal marine area, which is one of the most environmentally sensitive locations in the emirate.