Reuters | Oil rises to near one-month high on tightening of supplies Reuters SINGAPORE Oil climbed to a near one-month high on Wednesday on signs of a gradual tightening in global oil inventories and on concerns about a supply outage at a field in the United Kingdom's North Sea that feeds into an international benchmark price. Oil nears one-month high on North Sea outage, expected inventory drawdown Oil ends at 4-week high as traders anticipate fall in US crude inventories Oil's seaborne picture suggests Opec cuts taking effect |