In 2014, the Bakken celebrated its billionth barrel of oil delivered to market. This was a year in which many speculators expected US oil to surpass Saudi Arabia in output (as outrageous as that may sound).
Theories as to why oil (and therefore gasoline) prices have plummeted are numerous. Some claim the Saudis are attempting to check US oil, others say its an economic war with Iran/Russia. Both are likely true, but we need to look deeply into the repercussions of this price decline on a long-term geopolitical scale.
Check it out Montana.
They appear willing to pay the price: Saudi Arabia Facing Largest Deficit in Its History
And US companies are already being taken down: Oil Price Claims Its First Casualty
Saudi oil mainly comes from the Ghawar field and a few others clustered around it.