Oil pump jacks are seen at the Vaca Muerta shale oil and gas deposit in the Patagonian province of Neuquen, Argentina, January 21, 2019.
Oil pump jacks are seen at the Vaca Muerta shale oil and gas deposit in the Patagonian province of Neuquen, Argentina, January 21, 2019. Reuters / Agustin Marcarian

Oil prices edged lower in volatile trading on Thursday as the market weighed concerns of global supply and a build in U.S. fuel product inventories.

Brent crude futures for September, the more actively traded contract, were down 45 cents, or 0.4%, to $112.00 per barrel at 0711 GMT.

The August contract, which expires Thursday, was at $115.15, down $1.11 a barrel, or 1.0%.

U.S. West Texas Intermediate (WTI) crude futures fell 57 cents, or 0.5%, to $109.21.

"The net drop in crude oil inventories was flattered by SPR releases, while the gasoline stock jump is because U.S. refineries are running at over 95.0% capacity," said Jeffrey Halley, OANDA's senior market analyst for Asia Pacific.

Crude inventories fell by 2.8 million barrels in the week to June 24, far exceeding analysts' expectations in a Reuters poll for a 569,000 barrel drop, U.S. Energy Information Administration data showed, though U.S. gasoline and distillate stockpiles climbed.

Fuel stocks rose as refiners ramped up activity, operating at 95% of capacity, the highest for this time of year in four years.

But further disruptions to supply limited price declines, said ANZ analysts, amid a suspension of Libyan shipments from two key eastern ports, while Ecuador saw output fall due to ongoing protests.

Exports of Ecuador's flagship Oriente crude remain suspended under a force majeure declaration as the spread of anti-government protests hurt oil output, state-run Petroecuador said on Wednesday.

Meanwhile, the OPEC+ group, which includes allies such as Russia, began two days of meetings on Wednesday, though sources said there was little prospect of pumping more oil.