As we have seen recently, there is a general trend that presents a constant fall in oil prices. The reasons for that are twofold:
1) A genuine decrease in world demand for crude oil which might indicate the possibility of a recession.
2) An American pressure on OPEC countries not to cut supplies to keep prices low in order to exert economic pressure on Russia as a result of its aggressive policy in the Ukraine crisis.
Nevertheless, the trend is not definite. There are some fluctuations in oil prices as the commodity is going up and down. Last week (March 22-27, 2015), there was a rise in prices until Friday on which the commodity's bullishness reached an abrupt end with significant loses. What happened last week was a direct result of the market's balancing mechanism. On Friday, investors felt that crude oil was overvalued and so it was time to ditch it.
It will be interesting to keep record of the commodity's performances in the coming week.
Source: FMTrader's financial reviews