By Natalie Grover and Noah Browning (Reuters) -Oil prices rose more than a $1 a barrel on Wednesday after reports of a disruption to Libya’s top oilfield added to supply concerns emanating from tensions in the Red Sea. Brent crude was up $1.34 or 1.8% at $77.23 a barrel by 1450 GMT, while U.S. West Texas Intermediate crude futures rose $1.29 or 1.8% to $71.67 a barrel. Protests have forced a partial reduction in output at Libya’s 300,000 barrel per day (bpd) Sharara oilfield, two engineers told Reuters. “The Sharara shutdown certainly adds to pricing upside, especially of Brent,” said Viktor K…