Partner Nido Petroleum said production is not expected to start before early August as a replacement section for the damaged riser and two spare sections are being shipped from Singapore.

This is expected to take about a week followed by another 10 days of work to repair the riser.

The company added a 30m section of the production riser was damaged when the floating, production, storage and offtake vessel Rubicon Intrepid was disconnected from the field to seek shelter from Typhoon 07W Fengshen in June.

Nido deputy managing director Joanne Williams said while the damage and delay were frustrating, they were short-term challenges that could be remedied straight away.

"The silver lining can be found in the current record oil price, which means that Nido will recover all costs expended during the development in only a couple of months once the field comes online," she added.

Otto Energy managing director Alex Parks added the financial impact of the delay was relatively minor to Otto as the project was commercially robust.

Otto has an 18.28% indirect stake in the project through its 31.38% stake in field operator Galoc Production Company while Nido holds a 23% stake in the project.

Galoc is expected to produce more than 15,000 barrels of oil per day once it is brought on stream.

Other partners in the field are Alcorn Gold Resources, Forum Energy, Oriental Petroleum, PetroEnergy Resources and Philodrill.