OIL prices remained stubbornly high on Monday fuelled by an explosion at Kuwait’s biggest refinery which triggered frantic trading in the Asian petroleum product market. International benchmark Brent crude futures were trading at $30,67, up 28c. US light crude gained 30c to $32,55. Dealers said the closure on Sunday after a blast at Kuwait’s huge 485000 barrels a day Mena al-Ahmadi refinery had driven petroleum product prices higher in Asia — the destination for most of Kuwait’s refined oil sales. “It all seems to be moving up on the back of the Kuwaiti refinery. There is a strong Singapore gas oil market,” said a trader. But they said the extra Kuwaiti crude that will now be sold, rather than processed at the refinery, might eventually pull crude prices lower.