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Adnoc extends deadline for Umm Shaif gas cap bids

10 October 2025

Abu Dhabi National Oil Company’s offshore arm, Adnoc Offshore, has extended the technical bid submission deadline for a major project to increase gas and condensate production from the Umm Shaif hydrocarbons field.

The primary objective of Adnoc Offshore’s Umm Shaif gas cap and surface pressure boosting project is to increase gas production by 550 million cubic feet a day (cf/d) and raise associated condensate output by 50 million barrels a day (b/d).

Adnoc Offshore intends to feed about 520 million cf/d of the additional produced gas volumes into its parent Adnoc Group’s sales gas grid.

Adnoc Offshore has divided the engineering, procurement and construction (EPC) scope of the project’s first phase into three packages. The broad scopes of the two offshore packages and one onshore package are as follows:

  • Offshore package 1 – fabrication of a 30,000-tonne gas compression system
  • Offshore package 2 – fabrication of a 30,000-tonne gas compression system
  • Onshore package – EPC of gas inlet and processing systems on Das Island

Contractors now have until 30 October to submit technical bids for the three EPC packages of the Umm Shaif gas cap and surface pressure boosting project, according to sources.

The previous technical bid submission deadlines were 1 September, 31 July and 10 October, MEED previously reported.

The following contractors are among those that are understood to be bidding for the offshore packages:

  • China Offshore Oil Engineering Company (COOEC)
  • Hyundai Heavy Industries (South Korea)
  • Lamprell (Saudi Arabia/UAE)
  • Larsen & Toubro Energy Hydrocarbon (India)
  • McDermott (US)
  • NMDC Energy (UAE)
  • Saipem (Italy)

The following contractors, among others, are understood to be bidding for the onshore package:

  • Archirodon (Greece)
  • Petrofac (UK)
  • Target Engineering Construction Company (UAE)

The project operator is understood to have issued the main EPC tender for the Umm Shaif gas cap and surface pressure boosting project in the first quarter of this year.

Australian firm Worley has performed front-end engineering and design (feed) work on the project.

Umm Shaif gas production

Adnoc Offshore operates the Umm Shaif hydrocarbons development, which is located 150 kilometres (km) northwest of the city of Abu Dhabi. The Umm Shaif field is located in Abu Dhabi’s offshore Umm Shaif and Nasr hydrocarbons concession, previously operated by former Adnoc Group companies Adma-Opco and Zadco.

Between March and April 2018, Adnoc awarded a 10% stake in the Umm Shaif and Nasr offshore block to Italy’s Eni, 20% to France’s TotalEnergies and 10% to China National Petroleum Corporation. Adnoc Group retained the majority 60% interest. The operators produce a total of about 460,000 b/d of oil from the Umm Shaif and Nasr block.

Gas is produced from the Umm Shaif Khuff and Uweinat reservoirs, as well as from the Arab C and Arab D Early Production Scheme 2. The Umm Shaif Khuff reservoir is a formation that consists of dry gas volumetric reservoirs located in the Umm Shaif field.

Khuff reservoirs have been in production in Abu Dhabi since August 1989. Umm Shaif Khuff gas is currently produced from 28 active wells within the Umm Shaif field. A majority of these wells supply gas to Adnoc Group subsidiaries Adnoc LNG and Adnoc Gas Processing, with the remaining supporting oil reservoirs at the Umm Shaif field through gas injection.

The Umm Shaif Super Complex (USSC) processes and transports oil, condensates and natural gas in separate pipelines to Das Island for further processing and export. The condensates collected from the USSC are transported to Das Island through an 18-inch pipeline stretching 34.4km or spiked into the 36-inch Adnoc main oil line.

The gas collected from the USSC is transported to Das Island through two 46-inch pipelines, which also run 34.4km.

Pressure at the Umm Shaif Khuff gas reservoirs will start to decline by the end of 2028. The flowing wellhead pressures at some of the Khuff gas wellhead towers are likely to reduce, so boosting well deliverability and increasing the flowrates is necessary.

Therefore, new Khuff surface pressure boosting facilities are required to maintain the plateau – with a goal of achieving a 90% gas recovery factor – and increase production beyond the end of the plateau by lowering pressure at the Khuff reservoirs.

Project tendering exercise

Adnoc Offshore has been making attempts to advance the Umm Shaif gas cap project since at least 2019, and has experimented with several project execution models.

According to the original schedule, the project was due to be commissioned in 2023, but progress slowed down, primarily due to the Covid-19 pandemic.

Adnoc Offshore launched a feed-to-engineering, procurement, construction and installation (EPCI) competition for the project in May 2019, and selected the following three entities based on their feed submissions:

  • McDermott (US)
  • National Petroleum Construction Company (UAE) / TechnipFMC (France)
  • Saipem (Italy) / Petrofac (UK)

Technical bids for the EPCI works on the estimated $1.5bn project were submitted in January 2020 and commercial bids were submitted by August of that year.

The Saipem/Petrofac consortium emerged as the lowest bidder for the project in September 2020, MEED reported.

Petrofac is said to have eventually pulled out of the consortium and was replaced by state-owned China Petroleum Engineering & Construction Company (CPECC).

In 2022, the Saipem/CPECC consortium is understood to have remained the lone bidder on the Umm Shaif gas cap project. Adnoc Offshore engaged the consortium for a revised feed exercise, and went on to receive commercial offers on a single-source basis.

In 2023, Adnoc Offshore cancelled the tendering process for the project and later decided to proceed with a conventional EPC-based project execution model.

Last year, the operator appointed Worley to undertake feed works on the renewed Umm Shaif gas cap project. Worley has a legacy of involvement in the Umm Shaif hydrocarbons development.

ALSO READ: Adnoc marks steel cutting on Umm Shaif oil field project
https://image.digitalinsightresearch.in/uploads/NewsArticle/14845013/main2949.jpg
Indrajit Sen

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