This has been in the planning stages for a while.
Shell considers reversal of Houma-to-Houston pipeline
http://fuelfix.com/blog/2011/08/05/shell-considers-reversal-of-houma-to-houston-pipeline/
August 5, 2011
Federal Offshore—Gulf of Mexico Field Production of Crude Oil
http://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=MCRFP3FM2&f=M
Texas Field Production of Crude Oil
http://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=MCRFPTX2&f=M
Louisiana Field Production of Crude Oil
http://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=MCRFPLA2&f=M