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MPC’s Midstream segment includes the operations of MPLX, which transports crude oil and other feedstocks to MPC’s refineries and other locations; delivers refined products to wholesale and retail market areas; gathers, processes and transports natural gas; and transports, fractionates, stores and markets NGLs.

MPC owns, leases or has ownership interests in approximately 8,400 miles of crude oil and products pipelines, of which approximately 2,900 miles are owned through MPC’s investments in MPLX. MPC also has partial ownership interests in several pipeline companies. MPC delivered approximately 2.19 million barrels of crude oil and petroleum products daily through its common carrier pipelines in 2015. 

Also through investments in MPLX, MPC owns more than 5,600 miles of gas gathering and NGL pipelines and has ownership interests in 54 processing plants, 13 NGL fractionation facilities and two condensate stabilization facilities. In 2015 (1), 5,468 million cf/d of natural gas was processed with 307 million bpd of ethane and NGLs fractionated.

MPC has ownership interests in two ocean vessel joint ventures with Crowley Maritime Corporation: a 50 percent interest in Crowley Ocean Partners LLC that owns and operates four Jones Act product tankers and a 50 percent interest in Crowley Blue Water Partners that owns and operates three 750 class articulated tug barges.

(1) Beginning Dec. 4, 2015, which was the effective date of the MarkWest merger