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Pipeline Transportation/MPLX

MPC owns leases or has ownership interests in approximately 8,300 miles of pipeline, which includes approximately 2,900 miles owned or leased through our ownership in MPLX LP, a master limited partnership formed by MPC in 2012. Also through investments in MPLX LP and its wholly owned subsidiary, MarkWest, MPC owns 5,000 miles of gas gathering and natural gas liquids pipelines and has ownership interests in 51 gas processing plants, 11 NGL fractionation facilities and one condensate stabilization facility.

MarkWest is the second-largest processor of natural gas in the United States and largest processor and fractionator in the Marcellus and Utica shale plays. The company’s midstream energy operations include: natural gas gathering, processing and transportation; NGL gathering, transportation, fractionation, storage and marketing; and crude oil gathering and transportation. Its integrated midstream energy asset network links producers of natural gas, natural gas liquids and crude oil from some of the largest supply basins in the United States to domestic and international markets.

MPC manages one of the largest petroleum pipeline networks in the U.S., based on total volume delivered. The company operates pipeline systems that move crude oil from production fields and other pipeline connections to MPC refineries and other delivery points in the industry. The company also operates pipeline systems that move refined products from refineries to product terminals.

MPC delivered approximately 2.1 million barrels of crude oil and petroleum products daily through its common carrier pipelines in 2014, of which approximately 1.9 mmbpd were delivered through MPLX LP pipelines. High-speed computers, constantly evolving technology and satellite communications enable the company to monitor and control its many pipeline systems throughout the U.S. from a single control center in Northwest Ohio.

Marathon Petroleum also has partial ownership interests in several pipeline companies. For more information please visit Marathon Pipe Line LLC.


MPLX Fact Sheet

  2015 MPLX Fact Sheet (PDF 100 kB)