Adnoc LNG has pushed back the technical bid submission deadline for its second Integrated Gas Development (IGD) expansion project.

Technical bids for IGD Expansion 2, which is estimated to be worth $1bn, are now due in on 8 April, according to industry sources.

Companies expected to bid on the project include:

• Flour
• Technip
• National Petroleum Construction Company / Petrofac JV
• CB&I / Larsen & Toubro JV
• Worley Parsons / Archirodon / Hyundai E&C JV

The IGD Expansion 2 project will expand the volume of gas from Abu Dhabi's offshore field processed at Gasco's onshore operations at Habshan.

The expansion is also expected to add 200-400 million cubic feet a day of capacity.

The project includes adding two booster compression trains, three dehydration trains and two amine-based fuel gas treatment units – as well as associated facilities.

The package was originally tendered in March 2015 as one of five packages that formed the Integrated Gas Development Expansion project.

Commercial bids for the EPC contract were submitted in December 2015, but the project was subsequently put on hold and the contract was never awarded.

All of the other packages that were part of the first expansion project are currently in the execution phase. Gasco completed the initial $11bn IGD project in 2013.

The original IGD project allowed Gasco to transfer 1 billion cubic feet a day (cf/d) of high-pressure gas from the offshore Umm Shaif field via Das Island to onshore processing facilities at Habshan and Ruwais.