U.S. West Texas Intermediate (WTI) crude futures stood at $52.17 per barrel by 0755 GMT, down 47 cents, or 0.9 percent, from their last settlement.
International Brent crude oil futures were down by 48 cents, or 0.8 percent, at $61.15 per barrel.
Weighing on financial markets, including crude oil futures, were concerns that trade disputes between the United States and China would remain unresolved, denting global economic growth prospects.
U.S. President Donald Trump said on Thursday that he did not plan to meet with Chinese President Xi Jinping before a March 1 deadline set by the two countries to strike a trade deal.
If there is no agreement between the world’s two biggest economies, Trump has threatened to increase U.S. tariffs on Chinese imports. Another round of talks is scheduled for next week in Beijing.
“Crude prices returned to the lows of the week as slower growth prospects…could signal a return (of reasons) for inventories to rise,” said Edward Moya, market analyst at futures brokerage OANDA.
On Thursday, the European Commission sharply cut its forecasts for euro zone economic growth due to global trade tensions and an array of domestic challenges.
The Commission said euro zone growth this year would slow to 1.3 percent from 1.9 percent in 2018, before rebounding in 2020 to 1.6 percent.
Despite this, traders said crude prices were prevented from falling much further by supply cuts led by the Organization of the Petroleum Exporting Countries (OPEC), adopted late last year with the aim of tightening the market and propping up prices.
As part of the cuts, OPEC-kingpin Saudi Arabia cut its output in January by about 400,000 barrels per day (bpd) to 10.24 million bpd, according to OPEC sources.
That puts Saudi crude oil production almost 1.7 million bpd below that of the United States, which has been churning out around 11.9 million bpd in late 2018 and early 2019 – up by more than 2 million bpd from a year earlier.
“The OPEC+ meeting in April looms large, and we expect that if the group remains committed to their production targets oil prices have further upside,” said U.S. investment bank Jefferies on Friday in a note.
Another risk to supply comes from Venezuela after the implementation of U.S. sanctions against the OPEC member’s petroleum industry in late January. Analysts expect this move to knock out 300,000-500,000 bpd of exports.
For the time being, though, the sanctions impact on international oil markets was limited – Reuters