I could answer this, but first, I want to see where you are headed with this. Is there a point?
The D.O.E was of no help. I've been to BP’s & Exxon web sites to look at their financials for a clue.
I see the difference in price between Brent and other oil classifications.
I see we've reduced dependence on Saudi oil and increased dependence on Canadian.
I see we export approx 2 million barrels a day and produce about 10 million barrels a day.
We (the oil companies) import 126 million barrels a month from opec.
We have 22 billion barrels of proven reserves. and supposedly 2 trillion un-proven reserves ( shale ?)
What I don't see is, how does any of this weens us from mid-east\opec oil ? It still seems to me it's the oil companies that have to be weened from mid-east oil.
If the feds open up the whole country to drilling and fracking, how does that stop the oil companies from still buying mid-east\opec crude and selling it here ?