The graph above, from last month, is already outdated; CNBC is reporting this morning that the price of crude is now below $50 per barrel.
Certain special interest groups are attributing this fall to the shale oil production derived from fracking in the United States. It's not that simple:
The cause of the fall, by $40 a barrel, in petroleum prices since last summer is almost completely on the demand side. Asian economies, especially China, are dramatically slowing, and won’t be requiring as much petroleum to fuel trucks, trains and cars to deliver people and goods around the country. Most petroleum is used to fuel transport...
US journalists seem to feel it obligatory to mention US shale oil production as a contributor to the price fall, since prices are a matter of supply and demand, and US supply has increased by a couple million barrels a day. But frankly that is a minor increase in world terms– global production is roughly 90 million barrels a day. Between Iran, Iraq (Kirkuk), Libya and Syria, enough oil has gone out of production to more than offset the additional American oil. It isn’t that there is more oil being pumped, it is that the world doesn’t want it as much because of cooling economies.