Libya’s National Oil Corporation should lift the force majeure it imposed on El Feel and Sharara oilfields on Sunday after pipeline valves were shut down, United Nations Libya adviser Stephanie Williams said in a tweet on Monday. “Blocking oil production deprives all Libyans from their major source of revenue,” she added. Oil climbs as supplies expected to remain tight Oil prices rose in January with investors betting that global supply will remain tight, although restraint by major producers was partially offset by a rise in Libyan output. Brent crude settled up 42 cents, or 0.5%, to $86.48 a…