Oil prices fell more than 2% on Thursday on worries about slow demand growth with coronavirus cases rising, US crude stockpiles hitting an all-time high and the US Federal Reserve projecting recovery from the pandemic would take years. US West Texas Intermediate (WTI) crude futures erased gains from Wednesday, falling as low as $38.42 a barrel. The benchmark contract was down 2.5%, or 99 cents, at $38.61 at 0211 GMT. Brent crude futures fell 2.2%, or 92 cents, to $40.81 a barrel, also giving up gains from Wednesday. US crude inventories rose unexpectedly by 5.7 million barrels in the week to June 5 to 538.1 million barrels – a record – as imports were boosted by the arrival of supplies bought by refiners when Saudi Arabia flooded the market in March and April, data from the Energy Information Administration showed. At the same time, gasoline stockpiles grew more than expected to 258.7 million barrels. Distillate stockpiles, which include diesel and heating oil, rose by 1.6 million barrels, but the increase was smaller than in previous weeks. The market took a negative view on the stock build, even though there were signs of improving gasoline demand in the data, too, said Commonwealth Bank commodities analyst Vivek Dhar. “Most of the (price) gains have come from when strict lockdowns were lifted. Coming back to where it was pre-COVID – that will take some time,” Dhar said. “The key for markets to feel like the worst is over is: when will stockpiles peak globally. That’s what the market is paying attention to.” Adding to the negative sentiment, the US Federal Reserve said the world’s largest economy would shrink 6.5% this year and the unemployment rate would be at 9.3% at the end of 2020 in its first projections of the pandemic era. “Short-term and fast money traders are very much inclined to sell outright or to take profits on any hint of bearish data,” said Stephen Innes, chief global market strategist at Axicorp. In a further sign that recovery will continued to be overshadowed by the coronavirus, total US cases topped 2 million on Wednesday, with new infections rising slightly after five weeks of declines, according to a Reuters analysis.