Even without a northern connection to Canada, the Keystone XL southern leg that is nearing completion in Texas will move a lot more oil to the Gulf Coast.
It will add 700,000 barrels per day of pipeline capacity, boosting current capacity by 27 percent.
Until 2011, most pipeline capacity connected to the Gulf Coast was actually moving oil away from the region, with a maximum of only 250,000 barrels per day coming south in pipelines, according to data from energy information firm Genscape.
But huge amounts of oil production from U.S. shale plays, combined with increased interest in the oil from Gulf Coast refineries, has resulted in a dramatic build up of pipelines. Today there is 10 times the southbound pipeline capacity that there was about two years ago.