Oil rally may be short-term?

Another good week for oil after the OPEC Secretary predicted global oil consumption growth to over 100 million barrels per day by 2020. Mohamed Barkindo's statement was widely welcomed by oil investors.
Investors are now beginning to ask - is the oil rally justified and how far could the price of black gold go?
The market knows that OPEC's positive comments and forecasts often are rapidly being overcomed. Especially in cases where net long positions of investors rise to high levels, as currently the case is.
Investors are aware that any forecasts coming from OPEC should be taken with a great portion of mistrust. In the end, they come from a party that is interested in a high oil price and can be manipulated.
Some experts start to worry that the price of oil has risen too much and too fast. Not only the planned repairs of US refineries expected to bring downward pressure on raw material prices, but also the number of shale growers is rising as a result of the rise in oil prices.
Oil demand from China may also fall below expectations, which is another factor to lower the price of oil.
On the other hand, the unprecedented warming of relations between Russia and Opec may be a factor that will continue to support the cost of the raw material. What will happen from now on is yet to be seen.