Oil prices rose on Monday amid an ongoing North Sea pipeline outage and because a strike by Nigerian oil workers threatened its crude exports. Signs that booming U.S. crude output growth may be slowing also supported crude prices, although the 2018 outlook still points to ample supply despite production cuts led by OPEC. Brent crude futures LCOc1, the international benchmark for oil prices, were at $63.72 a barrel at 0821 GMT, up 49 cents, or 0.8 percent, from their last close. U.S. West Texas Intermediate (WTI) crude futures CLc1 were at $57.70 a barrel, up 40 cents, or 0.7 percent. The higher prices came on the back of a strike by Nigerian oil workers and the ongoing North Sea Forties pipeline system outage, which provides crude that underpins the Brent benchmark. North Sea operator Ineos declared force majeure on all oil and gas shipments through its […]