Gulf oil producers, already facing a weakening demand picture in 2011 and 2012, are expected to cut their output once Libya resumes production, OPEC's top official said Monday.

Secretary General Abdalla Salem el-Badri, a Libyan, told a forum here that
Libya could reach pre-unrest production levels within 15 months, as few key facilities were damaged, and said he expects Saudi Arabia and other Gulf countries to cut output once Libya 's production recovers, although he hasn't had any individual confirmation.

"When
Libya will come to production, [Gulf] OPEC members will reduce their production...no doubt about it," he said. "Right now I don't see anything, but as long as Libya starts to produce more and more, I'm sure member countries will cut. It is in their benefits."

El-Badri's comments come amid renewed concerns about the global economy. On Monday light, sweet crude futures on the New York Mercantile Exchange for delivery in October traded 1.6% lower at $86.58 a barrel at 0647 GMT, down $1.38 in the Globex electronic session. Brent crude was also lower on a dreary day for more European indexes.

A group of Gulf producers led by
Saudi Arabia unilaterally increased output this summer in expectation of greater demand after OPEC talks broke down in June.

A senior Saudi official said over the weekend that while global oil demand is weaker than expected,
Saudi Arabia has not decided whether to adjust its output once Libya resumes exports in the coming days. The Saudis expect the Libyan oil ramp-up to be be "slow and gradual," the Saudi official added.

El-Badri said Monday he sees rising negativity in the oil market amid greater concerns over weak
U.S. growth, the European sovereign debt crisis and signs that the Chinese government will act aggressively to prevent overheating of its economy.

El-Badri said he was surprised that crude oil prices have remained so high despite the economic anxiety. The International Energy Agency and OPEC last week reduced their forecasts for oil demand, although they differed on the outlook for Libyan crude. OPEC gave a more optimistic prognosis for
Libya and suggested that individual producers could cut back.

El-Badri, a former Libyan energy minister and head of its National Oil Corp., said there is no answer yet as to whether he would return and work in
Libya 's oil industry after his term as OPEC secretary general ends, but said it was safe now for other oil experts to return to the country.

OPEC will recognize the National Transitional Council as
Libya 's representative after the United Nations recognized it as the legitimate government.