Leading international engineering, procurement and construction contractors are lining up to submit technical bids later this month to Abu Dhabi National Oil Company (Adnoc) for four substantial onshore and offshore packages comprising its $10 billion-plus Hail & Ghasha sour gas development.

Project watchers said technical offers for some of the Hail & Ghasha packages are likely to be submitted within days and that bids for the first package, which comprises the project's significant offshore infrastructure elements, are expected to be submitted by the end of this month.