Here. Right from a Congressional study. Hope this helps.
Marketlink for Bakken Oil Production
The Bakken Formation is a large unconventional petroleum and natural gas resource underlying parts of North Dakota, Montana, and the Canadian provinces of Saskatchewan and Manitoba.
Although the region has been producing since 1951, it is only since 2006 that prices and technology have made it economic for industry to increase production. In March 2012, Bakken production exceeded 500,000 bpd the first time.
However, production has been increasing steadily, with average daily output in August 2013 exceeding 900,000 bpd.
To date, infrastructure to transport oil produced from the Bakken Formation has not kept up with the
Keystone XL Pipeline Project: Key Issues
Congressional Research Service increased production. Bakken crude oil is transported to refineries by rail and truck, in addition to
more economical transport by pipeline.
As stated earlier, the proposed Keystone XL Project would include a lateral pipeline, the Bakken Marketlink, to provide crude oil transportation service from Baker, MT, to Cushing, OK, via the
proposed Keystone XL Pipeline and from Cushing to Texas via the proposed Gulf Coast Pipeline.
Keystone Marketlink estimates that the project will cost $140 million and have the ability to deliver approximately 100,000 bpd of crude oil to the proposed Keystone XL Pipeline.
Thus, of the Keystone Pipeline’s 830,000 bpd ultimate capacity, up to 12% has been set aside to transport Bakken crude oil. Keystone Marketlink currently has firm, long-term contracts to
transport 65,000 bpd of the 100,000 bpd
More at the link:
http://fas.org/sgp/crs/misc/R41668.pdf