Libyan oil chief Shokri Ghanem, meanwhile, told reporters "all options are open."
OPEC countries are trying to find a way to stem plunging energy prices caused by plummeting demand amid the global economic meltdown.
Experts say Saturday's meeting will come down to what Saudi Arabia, the kingpin and traditional price dove in a group that supplies 40 percent of the world's crude oil, wants.
Saudi King Abdullah said in an interview published Saturday in the Kuwaiti newspaper Al-Seyassah that oil should be priced at $75 a barrel, far above its current rate.
"We believe the fair price for oil is $75 a barrel," he said, without saying how to reach that price.
A barrel of crude cost about $147 in mid-July. On Friday, the U.S. benchmark West Texas Intermediate crude for January delivery was trading at about $54 per barrel.
The cartel held an emergency meeting in Vienna on Oct. 24 to announce a production cut of 1.5 million barrels per day to try to halt the price slide. Its next scheduled meeting is on Dec. 17 in Algeria.
The production cut failed to stop the price drop, and the cartel hastily convened the Cairo gathering on the sidelines of the Organization of Arab Petroleum Exporting Countries' meeting.
"There is total confusion" among OPEC's 13 members, said Fadel Gheit, managing director of oil and gas research at Oppenheimer & Co. in New York. "These people ... really have no business model. They basically thrive when oil prices go up, and now they are crying uncle when prices go down."
And, down they have gone, in an avalanche sped along by a world financial meltdown that also threatens to cut deeply into OPEC member states' government budgets.
But ministers arriving Friday in Cairo were reticent. Saudi oil minister Ali al-Naimi said the cartel would issue an announcement on Saturday and declined to indicate which way they were leaning.
Kuwait's oil minister Mohammed al-Aleem said he believes there is no need for OPEC to make a decision in Cairo on cutting output. But he warned the market is oversupplied, and didn't rule out the need for OPEC to cut production further.
"We believe a decision could be taken ... but I think it will happen in Algeria," he said.