This phase, known as Cushing MarketLink, is part of the Keystone XL pipeline. This proposed phase would start from Cushing, Oklahoma where domestic oil would be added to the pipeline, then it would expand 435 miles (700 km) to a delivery point near terminals in Nederland, Texas to serve the Port Arthur, Texas marketplace. Also proposed is an approximate 47 miles (76 km) previous pipeline to transport crude oil from the pipeline in Liberty County, Texas to the Houston, Texas area.
Domestic oil producers in the USA are pushing for this phase so the glut of oil can be distributed out of the large oil tank farms and distribution center in Cushing, Oklahoma. On November 16, 2011, Enbridge announced it is buying ConocoPhillips' 50% interest in the Seaway pipeline that flows from the Gulf of Mexico to the Cushing hub. In cooperation with Enterprise Products Partners LP it plans to reverse the Seaway pipeline so that an oversupply of oil at Cushing could reach the Gulf. This project will replace the earlier proposed alternative Wrangler pipeline project from Cushing to the Gulf Coast. However, according to industries, the Seaway line alone is not enough for oil transportation to the Gulf Coast.
On March 22, 2012, President Obama announced an approval of the Cushing, Oklahoma to the Gulf Coast portion of the pipeline. TransCanada said that work on that section of the pipeline could start in June 2012 and be on-line by the middle to late 2013.
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