BP (NYSE: BP) said April 9 that, together with its partner the Oman Oil Co. Exploration & Production, it has approved the development of Ghazeer, the second phase of the giant Khazzan gas field in Oman.

The final investment decision (FID) for Ghazeer follows the successful startup of Khazzan’s first phase of development in September 2017. This project, which started production ahead of schedule and under budget, is now producing at design capacity of around 1 billion cubic feet of gas a day (Bcf/d) and around 35,000 barrels a day (bbl/d) of condensate.

“Following the successful startup of Khazzan, we are pleased to announce the sanction of Ghazeer, BP’s first project FID of 2018. Through the transfer of industry-leading skills and technology from BP’s global portfolio, we look forward to further developing this gas field that is expected to support Oman’s energy needs for many decades to come,” Yousuf Al Ojaili, BP Oman’s president, said.

The Ghazeer project is expected to come onstream in 2021 and deliver an additional 0.5 Bcf/d and over 15,000 bbl/dd condensate production. Drilling on the first three development wells has begun, following appraisal drilling on Ghazeer last year. Initial construction work has already started at Khazzan to accommodate a third gas train and associated infrastructure.

The Khazzan and Ghazeer, developments are expected to deliver total production of 10.5 trillion cubic feet of gas and around 350 million barrels of condensate through the end of concession.