Indonesia's crude oil output has fallen in recent years due to aging wells, a lack of investment and the absence of any major oil finds.
Its status as a net importer means it would benefit from lower oil prices, putting it at odds with other OPEC members, who favor higher prices.
Asia's only member of the oil cartel sees daily oil output of 927,000 barrels per day this year, down from 950,000 bpd in 2007.
Separately, Simon Sembiring, director general of mineral, coal and geothermal at the ministry, said Indonesia's long-awaited mining law could be passed before the parliamentary recess in July.
"The law must be passed, we will finish before the parliamentary recess period in July," Sembiring said, speaking on the sidelines of the conference.
Sembiring added an arbitration hearing over the sale of stakes in a copper and gold mine operated by U.S. mining firm Newmont on Sumbawa island would start in Jakarta in December.
Indonesia is home to huge mineral deposits and is a key producer of commodities such as coal, tin, rubber, palm oil and natural gas. However, uncertainty over the new mining law has held up investment in the sector.