* Dollar index gains for second day running
* U.S. government says global oil disruptions peak
* New attacks in Nigeria support prices (Repeats to additional subscribers)
By Henning Gloystein and Dmitry Zhdannikov
SINGAPORE/LONDON, June 10 (Reuters) - Oil prices fell on Friday, as a stronger dollar pulled crude off 2016 highs hit this week, although strong refinery demand and global supply disruptions lent support.
Brent oil futures LCOc1 were trading at $51.15 per barrel at 0910 GMT, down 80 cents while U.S. West Texas Intermediate (WTI) futures were down 85 cents at $49.71 a barrel.
Analysts said that a rebound in the dollar .DXY had dented oil prices by making fuel imports for countries using other currencies more expensive.
The dollar index .DXY was up 0.28 percent adding to Thursday's gains as jittery global financial markets sent investors toward safe haven currencies.
"Oil prices eased back from a near 12-month high as the dollar reversed its recent trend," ANZ bank said on Friday adding that supply disruptions around the world should help to keep prices from falling deeper.
Crude prices have almost doubled since touching their lowest in more than a decade in early 2016 as strong demand and supply disruptions erode a glut that pulled down prices by as much as 70 percent from a mid-2014 peak.
Declines in U.S. shale oil output are being compounded by steep falls in Nigerian production due to attacks by militants and in Canada due to forest fires.
The U.S. government said on Thursday unplanned global oil supply disruptions averaged more than 3.6 million bpd in May, the highest monthly level recorded since it started tracking disruptions in January 2011.
On Friday, the Niger Delta Avengers militant group said it had blown up the Obi Obi Brass trunk line operated by ENI ENI.MI .
On the demand side, global refining activity is expected to hit a record high just as crude supply disruptions around the world tighten the market.
Available global refining capacity will reach 101.8 million bpd in August, its highest on record, and up from around 97.25 million bpd in March, data on Thomson Reuters Eikon shows.
Investment bank Jefferies said on Friday that U.S. refinery utilisation reached 90.9 percent in the first week of June.
Consultancy JBC Energy said it had increased its 2016 oil demand growth outlook to above 1.4 million barrels per day, largely on increased U.S. gasoline consumption.
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http://tmsnrt.rs/1PND18i COLUMN-Oil market is back in balance: Kemp
Unplanned supply disruptions
http://www.eia.gov/todayinenergy/detail.cfm?id=26592
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