SINGAPORE : Oil prices were mixed in Asian trade Tuesday as concerns over a sudden glut in Iranian supply eased amid scepticism over an international agreement on its controversial nuclear programme. New York's main contract, West Texas Intermediate (WTI) for January delivery, was up 30 cents at $94.39 in afternoon trade while Brent North Sea crude for January was 19 cents lower at $110.81. Oil had retreated steeply in Asian trading hours on Monday in reaction to Sunday's deal, in which major powers and Iran agreed to some modest sanctions relief in exchange for tighter oversight of Iran's nuclear programme while the parties try to hash out a more comprehensive accord on Iran.