SINGAPORE, Oct 10 (Reuters) - The Middle East crude market firmed on Wednesday after Iraq and Iran joined other regional producers and raised their official selling prices for Asia. Oman crude weakened after its ministry sold 1 million barrels of prompt October loading crude at a low price after a fire shut its Mina Al Fahal refinery last Friday. * OSP: - Iraq's state oil marketer Somo raised its November OSP of Basra Light to Asia to 45 cents above the average of Oman/Dubai quotes, from flat against the average in October. - Iran has raised its official selling prices (OSPs) for November-loading Iranian Light crude by 90 cents to $2.85 above Oman/Dubai quotes from a $1.95 premium in October. The OSP for Iranian Heavy was raised to 5 cents above Oman/Dubai quotes, while that for Forozan was raised to 75 cents above Oman/Dubai, compared with a 5 cent discount in October. Iran left OSPs of Soroush and Norouz grades unchanged at $6.10 a barrel discount to Iranian Heavy OSP for November, the sources said. * TRADES: - Oman sold an extra cargo of crude that the refinery closure has freed up was sold to European firm Mercuria Energy Trading at parity or a discount to the grade's official selling price of $109.05 a barrel, traders said. October Oman cargoes were mostly sold at a premium of $1.30 a barrel to Dubai quotes. * REFINERY NEWS: Oman's state news agency said state-run Oman Oil Refineries and Petroleum Industries Company (Orpic) had issued a statement confirming a small fire on Friday at the 106,000-barrel-per-day refinery. The company said on Tuesday it would restart the refinery in the next few days after its maintenance team repairs the damage caused by the fire. Orpic said the blaze did not cause substantial damage and that supplies of oil, diesel and jet fuel would not be affected. * MARKET NEWS - Iraq is aiming to produce 5-6 million barrels of oil per day (bpd) by 2015, targeting 9-10 million bpd by 2020, a level that could be sustained for 20 years, the Deputy Prime Minister for Energy said on Wednesday. - Frontier Resources International Plc has signed an exploration and production sharing agreement (EPSA) with the Omani government for a 100 percent interest in Oman's Block 38, Frontier said in a statement on Wednesday. - Asia's top refiner, China's Sinopec, has started work to build Southeast Asia's largest oil storage terminal at the Batam free trade zone in Indonesia, the company and industry sources said, in an $850-million investment aimed to boost petroleum trading. CRUDE Price Prev Change DEC DME Oman diff to Dubai 1.08 1.03 +0.08 NOV Brent 114.49 112.54 +1.95 DEC Dubai 109.26 107.75 +1.51 DEC DME Oman 110.34 108.78 +1.56 NOV Brent/Dubai EFS DUB-EFS-1M 4.59 4.20 +0.39 PRODUCT CRACKS NOV fuel oil crack -8.13 -9.69 +1.56 NOV gasoil crack 19.67 19.58 +0.09 NOV naphtha crack -7.60 -7.76 +0.16 COMPLEX REFINERY MARGINS Today 10.33 Last 5 days 9.40 Last 365 days 7.37

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