by James Burgess, Oil Price:
Over the past year or so there seems to have been far more train derailments of cars carrying crude oil that have resulted in huge, deadly explosions, and it is not a coincidence that the oil in these explosions originated from the Bakken shale formation in North Dakota.
One problem is that the light crude extracted from the Bakken is more flammable than heavy crude, but there are other factors at play here as well.
In order to extract oil in the Bakken the oil companies use fracking to split apart the shale rock and gain access to the tight light oil trapped there. A special mix of chemicals is used to split the rocks underground, and while companies refuse to disclose the exact composition of this cocktail of chemicals, claiming that it is a trade secret, there is a high possibility that they are extremely flammable. Some of these chemicals remain mixed up in the crude oil, thereby increasing its flammability.
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