The energy minister for top OPEC exporter Saudi Arabia said on Nov. 17 that he was optimistic about OPEC's deal to limit oil output and mentioned the lower end of a previously agreed production target, helping spur a rally in the price of crude.

At a meeting in Algeria in September, OPEC made a preliminary deal to limit oil output. The details are meant to be finalized when OPEC ministers gather in Vienna on Nov. 30.

Saudi Energy Minister Khalid al-Falih, speaking to Saudi-owned Al-Arabiya TV, said the oil market was on a path toward becoming balanced, and that "reaching [a decision] to activate that ceiling of 32.5 million barrels per day [MMbbl/d] will speed up the [market] recovery and will benefit producers and consumers."

OPEC agreed on Sept. 28 to limit supply to between 32.5 MMbbl/d and 33 MMbbl/d, with special conditions given to Libya, Nigeria and Iran, whose output has been hit by wars or sanctions.

Falih and other ministers have said previously that OPEC would reduce output to that range, without specifying the higher or lower end.

Oil prices climbed above $47/bbl Nov. 17 as comments from Falih and other ministers boosted expectations that OPEC would complete the deal.

"I'm still optimistic that the consensus reached in Algeria for capping production will translate, God willing, into caps on states' levels and fair and balanced cuts among countries," Falih said.

Several OPEC energy ministers including Falih are expected to meet informally in Doha, Qatar, on the sidelines of a gas exporters' conference to try to build consensus.

Algeria's Energy Minister Nouredine Bouterfa said the issue of Iran's production would not undermine a deal.

"There is strong consensus among OPEC producers for a freeze," he told Reuters.

"Iran is not a problem. Iran is a particular situation and needs particular treatment. They will not have the same rule for the reduction. We will study what the best solution is for Iran."

Qatar's Energy Minister Mohammed al-Sada said Iran and Iraq, which has also sought special treatment in any supply cut, were being asked to freeze output at current levels.

"We are discussing with both countries on that and we are looking at various ways and means of coming to a mutual understanding," Sada told reporters.

Non-OPEC exporter Russia is ready to support OPEC's decision on an output freeze and sees a good chance that it can agree on terms by Nov. 30, Russian Energy Minister Alexander Novak said on Nov. 16.

Falih told Al-Arabiya that he hoped an agreement with Russia to cooperate on market stability would correspond with OPEC's meeting on Nov. 30.