Abu Dhabi Marine Operating Company (Adma-Opco) has extended the deadline for engineering, procurement and construction (EPC) bids on the second package of its Satah al-Razboot (Sarb) oil field development.

The company has asked interested contractors to submit technical proposals by 30 September, pushing the date back from a previous deadline of 27 August.

The estimated $500m packages includes the construction of accommodation and administration buildings, and associated facilities on artificial islands, which are being reclaimed for the full development of the Sarb field, offshore from Abu Dhabi.

The first package of the development, covering site preparation works for the Zirku Island processing facilities, was awarded to Geneva-registered Archirodon Construction in July.

Adma-Opco is currently assessing bids for the third and fourth packages, which include the construction of pipes, platforms and a processing plant.

Adma-Opco is majority-owned by the state-run Abu Dhabi National Oil Company (Adnoc), with minority stakes held by the UK’s BP, France’s Total and Japan Oil Development Company (Jodco).