MPLX Cornerstone NGL Pipe Done by End 2016, New Projects Coming

Cornerstone Pipeline Route Map
Cornerstone Pipeline Route Map – click for larger version

Marathon Petroleum Corporation’s MPLX midstream/pipeline division, which includes what used to be called MarkWest Energy, issued its second quarter 2016 update yesterday. Among the important bits of news, MPLX’s Cornerstone Pipeline is currently under construction and will be completed by the end of this year. Cornerstone is a $250 million, 50-mile natural gas liquids pipeline being built by Marathon from the MarkWest cryogenic processing plant in Cadiz (Harrison County, now owned by Marathon), northwest connecting to M3’s fractionator plant in Scio (also in Harrison County) and M3’s cryogenic processing plant in Leesville (Carroll County) before terminating and connecting to Marathon’s refinery in Canton, OH (see Marathon Petroleum’s Newly Announced “Cornerstone” Utica Pipeline). The pipeline will carry, at various times, crude oil, condensate and natural gasoline. From Canton, Marathon plans to move condensate and NGLs to Midwest refining centers and into Canada. Other exciting news: Marathon’s engineering teams continue to “evaluate synergistic projects” for the Marcellus/Utica, including “a butane-to-alkylate facility, a regional NGL export solution in the Northeast, and a long-haul pipeline to the Gulf Coast, such as a reversal of the Centennial Pipeline.” Very cool. Here’s the MPLX update…

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