Oil notched its biggest weekly loss since the depths of the last price crash, as record Saudi output, pressure from US President Donald Trump and a global stock sell-off intensified crude's freefall.
Futures slid below US$60 ($88.56) in London on Friday (US time) and ended the week down about 12 per cent, the worst showing since January 2016. Traders focused on the growing risks of a new glut of crude after Saudi Arabia's oil minister said Thursday that production from the world's largest exporter had climbed further this month.
Oil joined a swoon in equity markets nervous about international trade and a weakening economy. The S&P 500 Index fell to its lowest mark since May while European markets lost ground after a report showing a slowdown in Germany. Energy companies led declines, with shale drillers Concho Resources and Devon Energy each down more than 5 per cent.
"Crude's getting shellacked," said Kyle Cooper, director of research at energy consultant IAF Advisors in Houston. "The equities are giving a foreboding sign for overall economic growth. I think that's what's disturbing people."
In the US, West Texas Intermediate oil prices slid toward US$50 a barrel, the baseline at which many large shale explorers set their budget this year, RBC Capital Markets analyst Scott Hanold said in a note to clients. Smaller producers planned on even more, predicating budgets on WTI prices 10 to 15 per cent higher, he wrote.