"We met in December last year and we met in June this year. We decided to keep our production at 30 million barrels a day, the same as before. We are not ready to reduce our production," Badri said after a meeting in Moscow with Russia's energy minister.
OPEC at its last meeting in Vienna in June kept its output levels despite a supply glut, extending the strategy of oil powerhouse Saudi Arabia which aims to preserve market share and fend off competition from booming US shale.
The fall followed a rebound in prices after a steep slump last year. Prices continued a slight recovery on Thursday following reports of a drop in US stockpiles.
US benchmark West Texas Intermediate (WTI) for delivery in September climbed 33 cents to USD 49.12 a barrel compared with Wednesday's close, while Brent North Sea crude for September gained 65 cents to USD 54.03 a barrel in London afternoon trade.
OPEC and Russia said in a joint statement after today's talks that indicators pointed to a possible "more balanced situation on the oil market and its stabilisation" in 2016.
The accord paves the way for the removal of sanctions and the gradual return of Iranian oil to the global market in 2016.
The Organization of the Petroleum Exporting Countries -- whose 12 members including Iran pump one third of global oil -- is mindful that Iranian oil could worsen a global supply glut and depress oil prices further.
Badri, however, insisted that OPEC welcomed the lifting of sanctions on Iran and would be able to cope with any increased volumes.
"I think the quantity that is in question, I think our group will accommodate them.
