OPEC would wait until crude inventories fell to around 53 days of forward cover before considering raising output, Oil Minister Ali Al-Naimi was reported as saying in remarks published late Friday. OPEC left output targets unchanged at a meeting Thursday, as higher oil prices and optimism the global economy would soon start to recover outweighed concern over high crude stocks. The oil price hit a six-month high over $66 a barrel Friday. “We will wait until inventories are at the level which we consider reasonable, which is about 53 days of forward cover,” the minister for the top oil exporter told industry publication Petroleum Argus in an interview, when asked what would prompt OPEC to increase supply. “I think that is a fair level.” Oil stocks stand at around 62.4 days of cover, according to the International Energy Agency. Recession has caused the sharpest fall in demand in nearly three decades, so oil in stocks covers more days of demand. But if demand picks up, the days of forward cover would fall without OPEC taking more oil off the market, Al-Naimi said. The rally in prices was sustainable, Al-Naimi said. Oil has more than doubled from a December low of $32.40 a barrel. “I believe it is highly sustainable,” he said. “I believe it is reflecting increased demand, improved economic recovery and confidence in national policies that have been adopted by many countries to improve the economy.” State oil giant Saudi Aramco has capacity to produce above 12.5 million bpd if needed, without including capacity in the neutral zone between the Kingdom and Kuwait, Al-Naimi said. That was higher than the 12 million bpd nameplate capacity that the Kingdom has repeatedly stated Aramco would have once expansion plans under way were completed next month. “We could produce 12.5 million bpd even if we did not have the neutral zone,” the oil minister said. “Our surface facilities and pipelines provide more than 12.5 million bpd. What restricts us is the wells. We have the reserves and the drilling rigs. If we want to produce more than 12.5 million bpd from Aramco alone, we can do that.” The Saudi side of the neutral zone had capacity to pump around 500,000 bpd, he added. That would give total capacity at around 13 million bpd.