Crudeoil trading range for the day is 4483-4937.
* Crude oil fell as concerns about supply disruptions eased and Libyan ports resumed export activities.
* The focus shifted toward possible supply increases, even as a Norwegian union for workers on offshore oil and gas drilling rigs stepped up a six-day strike.
* Russia and other major oil producers may increase output further should supply shortages hit the global oil market, Russian Energy Minister Alexander Novak said.
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