According to the recently published OPEC forecast, if oil exporters managed to survive this year, next year they are likely going to face a financial disaster. The cartel predicts that late 2015 is going to be the time of slightly higher demand for crude oil, which may slightly support oil prices and even let them recover a little. However, early 2016 is going to be the time when the demand crashes, which may result in serious financial difficulties for major oil exporters with economies heavily dependent on oil exports (like Russia, for example).
In particular, oil prices are expected to crash even below the existing ultra-low oil price - $30/b and lower. If this is the case, this will trigger another wave of currency devaluation in Russia. The thing is the Russian Ruble is pegged to oil prices since the Russian economy is heavily dependent on the Russian oil export. At this point, the exchange rate is around 68RUB per 1USD. In early 2016, it is expected to drop further down to 80RUB per 1USD.
Other financial experts, including those working for Goldman Sachs expect oil to devalue down to $20/b. If this is the case, it is hard to predict how strong the devaluation of the Russian Ruble is going to be under such circumstances.
