Kim also pledged to refrain from further nuclear or missile tests, lifting Asian stock markets and pulling crude oil futures along with them.

Brent crude was at $64.62 per barrel at 1424 GMT, up $1.01 from its previous close.

US West Texas Intermediate (WTI) crude futures were at $60.95 a barrel, up 83 cents.

Brent even turned what would have been its second consecutive weekly loss into a slight weekly rise of 0.4 percent over the course of Friday. WTI stayed in negative territory for the second week running, falling around 0.4 percent.

Analysts warned after two days of sell-offs that the broader market outlook remained bearish due in large part to rising US inventories and production.

"Our overall short-term view is bearish," said Bjarne Schieldrop, chief commodity analyst at SEB.

Data from the US Energy Information Administration showed crude output <C-OUT-T-EIA> rising 23 percent since the middle of 2016 to 10.37 million barrels per day (bpd).

Analysts at Commerzbank said they expected US weekly rig count data, due later on Friday, to show further increases, adding pressure on oil prices.

"After all, it is attractive to drill for shale oil at prices above $60," they said in a note.

Thanks largely to shale, the United States now produces more crude than top OPEC exporter Saudi Arabia. Only Russia pumps more, at almost 11 million bpd.

"It seems only a matter of time before the US becomes the biggest oil producer in the world," Hans van Cleef, senior energy economist at Dutch bank ABN Amro, said in a note to investors.

Unlike Middle East producers, where output is largely dictated by state-owned oil companies, US producers drill and sell purely based on economics. If prices remain at current levels or rise further, US drillers are profitable and will raise output; if prices stumble, US production will fall.

Elsewhere, Libya's 70,000 barrels per day El Feel oilfield stayed shut despite the Petroleum Facilities Guard saying it had reached a deal to reopen it, according to a field engineer and local mediator.

As much as production, oil prices will also depend on demand. Here, there are signs of a slowdown, although much of this could be seasonal as the northern hemisphere winter ends.