The move makes a shift in the way oil flows across the US with Seaway being the delivery and storage point for the US crude oil futures.
Last week, the companies announced completion of reversal of the 500-mile, 30-inch diameter pipeline, which will provide North American producers with the infrastructure to access Gulf Coast refinery demand.
The pipeline will initially provide 150,000 BPD capacity, which is expected to increase to more than 400,000 BPD in the first quarter of 2013 with additional modifications and increased pumping capabilities.
Enterprise and Enbridge control the pipeline through in a 50:50 joint venture deal.
The Seaway system also includes a terminal and distribution network in Texas, which serves the local refineries and in the Houston area including dock facilities at Freeport and Texas City.
