* Brent hits $60 per barrel for first time since July 2015
* Opec's head says Saudi, Russia comments 'clear fog'
* Rising US output keeps a lid on US crude gains
Oil prices rose more 1% on Friday on support among the world's top producers for extending a deal to cut output and as the dollar retreated from three-month peaks.
Brent rose 59 cents to $58.89 a barrel by 10:51 a.m. ET (1451 GMT), after rising to a session high of $60.08, the highest since July 2015 and more than 35% above its 2017 lows touched in June.
US light crude oil was up 78 cents, or 1.48% at $53.42 after rising to a session high of $53.52 a barrel. US crude prices have been capped by rising US production.
Ahead of Opec's next policy meeting, Saudi Arabia and Russia declared their support for extending a global deal to cut oil supplies for another nine months, Opec's secretary general told Reuters on Friday. The pact runs to March 2018.
Saudi Arabia's Crown Prince Mohammad bin Salman told Reuters on Thursday the kingdom would support extending the output cut in a bid to stabilise oil demand and supply.
Oil prices have been hovering near their highest levels for this year amid recent signs of a tightening market, talk of an extension of production cuts and tensions in Iraq.
Friday's announcement of a ceasefire between Iraqi forces and the Peshmerga from the country's autonomous northern Kurdish region eased some concerns. "What is interesting is that the pop in WTI futures moved above the Sept. 28 high," said David Thompson, executive vice president at Powerhouse, an energy-specialised commodities broker in Washington, DC.
"So even though the dollar is giving back some of its move, crude may now be trading off of a new driver, the technical breakthrough to a new high."
The dollar trimmed its earlier gains on Friday versus a basket of currencies following a Bloomberg report that US President Donald Trump is said to be leaning toward Federal Reserve Governor Jerome Powell as his pick to head the US central bank.
A weaker dollar makes greenback-denominated commodities including oil cheaper for holders of other currencies.
"I think the combination of short covering and Chevron and Exxon both missing their production guidance for the third quarter has resulted in the market strength today," said Scott Shelton, energy futures broker with ICAP in Durham, North Carolina.
TransCanada Corp said in a filing on Thursday that it is seeking to raise the temporary discounted spot rate for light crude on its 700,000 barrel-per-day Marketlink pipeline. The news sent US crude benchmark's discount to global marker Brent to the widest in a month.
The Organisation of the Petroleum Exporting Countries and some non-Opec producers including Russia have pledged to reduce production by around 1.8 million barrels per day (bpd) until the end of March 2018 to drain a global supply glut.
"If Opec and their non-Opec partners can agree to extend their production curtailments through 2018, then we estimate the oil market will remain in modest under-supply until 2019," US Investment bank Jefferies said.
Opec is expected to discuss extending that agreement at a meeting in Vienna on November 30.
Rising US crude production remains an issue for Opec as it strives to clear a global overhang.
US crude production rose by 1.1 million bpd to 9.5 million bpd in the week ended October 20, according to US Energy Information Administration (EIA) data.