EIA assesses refining and processing options for additional U.S. light tight oil production

With the growth in U.S. production of light tight oil (LTO) in recent years, petroleum refiners in the United States have been processing greater volumes of LTO.  

http://www.pennenergy.com/articles/pennenergy/2015/04/eia-assesses-refining-and-processing-options-for-additional-u-s-light-tight-oil-production.html