Top oil exporter Saudi Arabia sees no need to hold a summit of producing countries' heads of state if such discussions would fail to produce concrete action toward defending oil prices, sources familiar with the matter said on Thursday.

Oil production from the Organization of the Petroleum Exporting Countries (OPEC) totaled 31.26 million barrels per day (b/d) in August, down 140,000 b/d from the July level of 31.4 million b/d as several member countries, including Saudi Arabia, trimmed output, according to a just-released Platts survey of OPEC and oil industry officials and analysts.

Oil declined for a second day after another Russian official ruled out cooperation on production cuts with OPEC, adding to signs that a global oversupply will persist.

Saudi Aramco, the kingdom's state oil giant, is talking to banks about raising a $5 billion loan related to a refinery it built in collaboration with China's Sinopec.

“Today’s continuing pressure on prices, brought about by higher crude production, coupled with market speculation, remains a cause for concern for OPEC and its members—indeed for all stakeholders in the industry,” the commentary in the latest OPEC Bulletin said.

Supplies outside OPEC are expected to contract in 2016 for the first time since 2008, sliding by 200,000 barrels a day, according to the International Energy Agency. With consumption set to grow by 1.4 million barrels a day, OPEC and its de facto leader Saudi Arabia could seize the chance to broaden their market as competitors damaged by the price slump fall off.

Although OPEC's statutes say support from a simple majority of the 12 members can trigger an extraordinary meeting, none will occur without support from Saudi Arabia, which has yet to give its blessing, OPEC delegates say.

Most Middle Eastern stock markets declined amid mounting concern the region’s largest economy will cut spending after oil prices slumped to the lowest since 2009.

China Petroleum & Chemical Corp., Asia’s biggest oil refiner, posted a 22 percent decline in profit for the first half of the year as the slump in prices outweighed the benefit of cheaper crude to its refining business.

Iran will ramp up crude oil production and reclaim its lost share of exports shortly after international sanctions on the OPEC member are lifted, Iran's oil minister Bijan Zanganeh said on Tuesday.