The Kirkuk-Ceyhan line, out of service since Monday after an attack by militants, resumed service to the Mediterranean, Upstream reported.
The impact on pricing was hard to assess. There was enough storage capacity in Ceyhan so that deliveries were not interrupted. But attacks on pipelines anywhere put traders on alert.
On the New York Mercantile Exchange, West Texas Intermediate crude oil shed 86 cents to $92.78 per barrel.
Gasoline prices were up 1.42 cents to $2.8260 a gallon.
Home heating oil was $2.8975 a gallon, off 0.42 cents.
Natural gas gained 4.3 cents to reach $4.243 per million British thermal units.
At the pump, the average price of a gallon of regular unleaded gasoline was $3.505, down from $3.512 Thursday, the AAA Fuel Gauge Report said.