* Both benchmarks rise for fifth straight week
* U.S. inches towards coronavirus aid bill
* OPEC+ to increase supply, but keep bulk of supply cut intact
* Brent six-month backwardation highest since February
* U.S. oil rigs rise 5 to 246, highest since May -Baker Hughes (Updates with settlement prices)
By Jessica Resnick-Ault
NEW YORK, Dec 4 (Reuters) - Brent crude oil futures rose more than 1% on Friday, remaining just under $50 a barrel, as expectations of a U.S. economic stimulus package and the possibility of a vaccine for the coronavirus overrode rising supply and increased COVID-19 deaths.
A bipartisan $908 billion coronavirus aid plan gained momentum in the U.S. Congress. LCOc1 settled up 54 cents or 1.11% at $49.25 a barrel. During the session, the contract hit its highest since early March at $49.92. West Texas Intermediate CLc1 rose 62 cents to $46.26 a barrel, after touching a high of $46.68 a barrel.
Both benchmarks gained for a fifth consecutive week, with Brent up 1.7% and U.S. crude up 1.9%.
"We're higher, despite super bearish events - it's all about stimulus," said Bob Yawger, director of energy futures at Mizuho in New York. "You can't go home short this weekend because they could sign a deal this weekend."
OPEC+, comprising of the Organization of the Petroleum Exporting Countries and its allies, on Thursday agreed on a compromise to increase output slightly from January but continue the bulk of existing supply curbs to cope with coronavirus-hit demand.
OPEC and Russia agreed to ease deep oil output cuts from January by 500,000 barrels per day with further as yet undefined increases on a monthly basis, failing to reach a compromise on a broader policy for the rest of 2021. had been expected to continue existing cuts until at least March, after backing down from plans to raise output by 2 million bpd.
The increase means the group will reduce production by 7.2 million bpd, or 7% of global demand from January, compared with current cuts of 7.7 million bpd.
While some analysts saw an undersupplied oil market even under the new higher supply quotas, others expected the barrels would tip the market into oversupply.
Wood Mackenzie analysts, for example, expect that if the increases continue through March, there might be 1.6 million bpd unwanted in the first quarter.
The premium of Brent crude futures LCOc1-LCOc7 for nearby delivery to future months is at its highest since February, a structure called backwardation, which usually points to supplies tightening up and suggests receding fears of a current glut.
U.S. production, meanwhile, has recovered from the two-and-a-half-year lows touched in May mainly because shale producers have brought wells back online in response to rising prices.
The U.S. oil rig count RIG-USA-BHI rose five to 246, its highest since May, energy services firm Baker Hughes Co said. RIG/U
Money managers raised their net long U.S. crude futures and options positions in the week to Dec. 1, the U.S. Commodity Futures Trading Commission (CFTC) said.