Russia's offline primary oil refining capacity is seen declining by around 15 per cent in the later half of October from the first 15 days of the month, Reuters calculations based on data from industry sources showed on Wednesday. A decline in idle oil refining capacity usually leads to less available crude oil and a resulting fall in exports as refineries consume more feedstock to produce fuel. Such capacity is seen falling to 131,500 metric tons per day (964,000 barrels per day) on average between Oct. 16 and Oct. 31 from 155,000 tons a day in the first half of the month. The schedule for offline primary refining capacities suggests that it will gradually decline to 125,000 tons per day by the end of October from 170,000 tons a day in the beginning of the month. The calculations also showed that Russia has likely passed the autumn peak of idle refining capacity of 192,000 tons reached on Sept. 22.