ahh, found it
http://tonto.eia.doe.gov/dnav/pet/pe...EEX_mbbl_m.htm
more:
The ?oil? we export is not in the form of crude, but rather is composed of diesel and other heavy fractional petroleum distillates. When crude is refined into its final products, the ratio of what is produced out is fixed (for the most part).
... what little raw crude oil the US exports goes exclusively to Canada. To further put this into perspective, in 2009 we exported a whopping 15.9 million barrels to Canada, or 0.82% of total US domestic oil production.