Oil prices rose on Thursday ahead of an OPEC meeting where members are expected to agree on deeper output cuts in an effort to prop up prices and prevent a glut next year. Sources told Reuters that OPEC was seeking to increase production cuts by the group and its allies led by Russia by more than 400,000 barrels per day (bpd) from their current level of 1.2 million bpd.

The OPEC countries meets on Thursday in Vienna followed by a meeting on Friday with Russia and other producers. That group is known as OPEC+. Brent Crude futures were up 35 cents, or 0.6%, to $63.28 a barrel. Brent surged 3.6% on Wednesday. WTI Crude crude futures were unchanged at $58.42 a barrel. They settled 4.2% higher on Wednesday. The OPEC+ group has been curbing output since 2017 to counter surging production from the United States, now the world’s biggest oil producer thanks to rapid growth in shale oil output. Next year, rising production in other non-OPEC countries such as Brazil and Norway threatens to add to the glut. “We expect a constructive outcome to today’s meeting in terms of a prolongation of the deal, but are not yet convinced that a strong bullish surprise with a sizeable adjustment to the target level will really transpire,” Vienna-based consultancy JBC Energy said in a note.

OPEC’s effort to deepen cuts and increase member compliance was also driven by the group’s de facto leader Saudi Arabia’s hopes to see higher oil prices to support its budget and initial public offering (IPO) of state-owned Saudi Aramco. Oil prices surged on Wednesday on expectations of deeper OPEC cuts and data showing a large drop in U.S. crude inventories last week. But prices are still roughly where they were a week ago as concerns about a U.S.-Chinese trade war persist.

U.S. President Donald Trump on Wednesday described trade talks with China as going “very well”, a day after saying it could take until after next year’s presidential election to complete an agreement.