This output is spread to 37% in China, 33% in Australia, 27% in the United Kingdom and 3% in Africa.

Between now and year-end, Roc reiterated an earlier forecast that its total output is expected to remain between 10,000-20,000 boepd.

“The combination of a six-field production base and a potential high impact eight well exploration drilling program offshore China and onshore Angola - including two current wells, Cevada-1 and Soja-1, in Angola - provides Roc shareholders with a balanced exposure to both the current high oil price and exploration upside,” Roc’s managing director John Doran said.

Roc said it has recently achieved several corporate milestones, including a 17,000boepd output from two wells at its Blane oil field, in the North Sea, within a week of coming online.

Production at the Enoch Oil and Gas Field in the North Sea, has largely met expectations since it began more than three months ago with most recent production rates of 12,000boepd, Roc said.

Earlier this month, Roc said its Cliff Head oil field, in the Perth Basin, produced its 4 millionth barrel of oil, 16 months after coming online.

Currently, the field is producing 11,500bopd.

So far this year, Roc said production from the C and D fields in the Zhao Dong Block, offshore China, has under-performed expectations.

“There are a number of reasons for this production performance, including inclement weather, down hole equipment malfunction and a degree of reservoir complexity, all of which are being addressed,” the company said.

Production at Zhao Dong is about 20,000bopd.

Fabrication of the C4 production facilities has begun and production is still expected to start in fourth quarter of this year.