Sigh... It amazes me how often this lie is told. If you just look at a map, you can see the much greater distance to Japan than the US West Coast Markets.
Map centered on Valdez, Alaska. Export Terminal for the Trans-Alaska Pipeline.
When first built the pipeline oil could not be exported; that was part of the deal to get the pipeline approved through congress. The ban against exporting Alaskan North Slope was lifted in 1996 yet 100% of Alaskan North Slope oil is kept in America. This has been the case for all but 4 years of the nearly 3 decades of Alaskan oil production. Between 1996-1999 5.5% of North Slope oil was exported to Asian countries. These exports were overwhelmingly supported by the US Congress and by the Clinton Administration to offset an oil glut in California at the time. In June 2000 Alaskan North Slope oil again ceased to be exported, and 100% of Alaskan North Slope production has stayed in America.
You can look at the export history from this area since the ban was lifted.
Exports, US West Coast including Alaska and Hawaii
http://tonto.eia.doe.gov/dnav/pet/hist/mcrexp51a.htm
Here you can see data from the California Energy Commission. They track the amount of oil brought into California from Alaska.
CALIFORNIA CRUDE OIL PRODUCTION AND IMPORTS
http://www.energy.ca.gov/2006publications/CEC-600-2006-006/CEC-600-2006-006.PDF
Here you can see from the Washington Government that 74% of the oil used in Washington State refineries comes from Alaska.
Washington State, Petroleum FAQs
http://qa.cted.wa.gov/portal/alias__CTED/lang__en/tabID__847/DesktopDefault.aspx
If you just look at a map, you can see
Yes, we actually did export oil from Alaska to Japan. And we even today export petroleum products to other countries. It has to do with making global oil distribution more efficient. It is a fungible, global commodity.