Oil prices wavered in volatile trade Thursday, as investors weighed an unexpected decline in U.S. crude inventories against growing doubts that major oil producers will agree to curb their output. Brent crude, the global oil benchmark, fell 0.2% to $39.77 a barrel on London’s ICE Futures exchange. On the New York Mercantile Exchange, West Texas Intermediate futures were trading down 0.3% at $37.65 a barrel. Both benchmarks rallied more than 5% on Wednesday after the U.S. data was released. U.S. crude-oil supplies fell by 4.9 million barrels last week, the Energy Information Administration said Wednesday. Analysts surveyed by The Wall Street Journal had expected stockpiles to rise by 3.3 million barrels. “It has been a long time since the EIA weekly U.S. crude oil stock figures have given the market something bullish to work […]