SYDNEY (Reuters) - Oil prices edged lower on Friday as a surprise increase in U.S. inventories offset support from the threat of lower production in Venezuela.International Brent crude oil futures were at $61.01 a barrel at 0124 GMT, down 8 cents their last settlement. Brent futures closed down 0.1 percent in the previous session.U.S. West Texas Intermediate (WTI) crude futures were at $53.08 per barrel, down 6 cents from their last settlement. WTI futures closed up 1 percent on..