Adnoc Gas advances project to add new train at Habshan

23 April 2025

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Adnoc Gas is moving forward with a major project to add a new gas processing train at its Habshan complex in Abu Dhabi and has started an early engagement process with contractors.

Adnoc Gas, the natural gas processing business of Abu Dhabi National Oil Company (Adnoc Group), issued an expression of interest (EoI) document to contractors for the Habshan 7 new gas train project in March. Contractors submitted responses by 8 April, according to sources.

Adnoc Gas processes about 10 billion standard cubic feet a day (cf/d) of gas across different sites, including its Asab, Bab, Bu Hasa and Habshan facilities, as well as a natural gas liquids (NGL) fractionation plant at Ruwais. The company also owns and operates a 3,250-kilometre natural gas pipeline distribution network across the UAE.

The Habshan complex is one of the biggest gas processing facilities in the UAE and indeed in the Middle East and North Africa region. Its output capacity is 6.1 billion cf/d. The complex comprises five trains and 14 processing units that receive gas feedstock from onshore and offshore fields in Abu Dhabi.

With Adnoc Group pressing forward to achieve its goals of raising oil production potential to 5 million barrels a day by 2027, as part of its strategic P5 programme, high volumes of associated gas output are set to enter the grid.

The new train at the Habshan complex, which Adnoc Gas expects to commission in 2029, will play a key role in handling these additional gas volumes.

UK-headquartered Wood Group has performed the concept study and initial engineering design of the Habshan 7 new gas train project.

Adnoc Gas intends to install the Habshan 7 train adjacent to the Habshan 5 train. This will enable the new train to utilise the ullage in the Habshan 5 sulphur recovery and tail gas treatment units and optimise operations.

The scope of work on the Habshan 7 new gas train project covers engineering, procurement and construction of the following units:

  • New high-pressure pipeline from the main Habshan complex to the new gas train
  • Separation and condensate stabiliser unit
  • Acid gas removal unit
  • Mercury removal unit
  • Deep NGL recovery unit
  • Sales gas and residue gas compressor
  • NGL product storage and transfer pump, as well as metering skid
  • Utility units (IA, N2, PW, FW, steam generation, DM)
  • Flare unit, to be located in Habshan 5 on common derrick
  • Flare gas recovery package
  • Water treatment package
  • Non-process buildings, to be located outside the Habshan 5 train
  • Power generation system
  • NGL pipeline from Habshan 5 to Ruwais, based on an existing pipeline assessment
  • Sales gas pipeline from Habshan 5 to sales gas network.

During the early engagement process, Adnoc Gas will select contractors to carry out pre-EPC activities, such as front-end engineering and design (feed) verification, project technical review, assistance in procuring long-lead items and site visits.

ALSO READ: Contractors prepare bids for Shah gas plant expansion project

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Indrajit Sen
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