Exhibit 21.1
MPLX LP
LIST OF SUBSIDIARIES
as of December 31, 2023
Name of Subsidiary | Jurisdiction of Organization/Incorporation | ||||
Andeavor Field Services LLC | Delaware | ||||
Andeavor Gathering I LLC | Delaware | ||||
Andeavor Logistics CD LLC | Delaware | ||||
Andeavor Logistics LLC | Delaware | ||||
Andeavor Midstream Partners GP LLC | Delaware | ||||
Andeavor Midstream Partners LP | Delaware | ||||
Andeavor Midstream Partners Operating LLC | Delaware | ||||
Asphalt Terminals LLC | Delaware | ||||
Blanchard Terminal Company LLC | Delaware | ||||
Canton Refining Logistics LLC | Delaware | ||||
Catlettsburg Refining Logistics LLC | Delaware | ||||
Detroit Refining Logistics LLC | Delaware | ||||
Galveston Bay Refining Logistics LLC | Delaware | ||||
Garyville Refining Logistics LLC | Delaware | ||||
Green River Processing, LLC | Delaware | ||||
Hardin Street Marine LLC | Delaware | ||||
Hardin Street Transportation LLC | Delaware | ||||
Marathon Pipe Line LLC (d/b/a Marathon Pipe Line (Delaware) LLC) | Delaware | ||||
MarkWest Agua Blanca Pipeline, L.L.C. | Delaware | ||||
MarkWest Bluestone Ethane Pipeline, L.L.C. | Delaware | ||||
MarkWest Energy East Texas Gas Company, L.L.C. | Delaware | ||||
MarkWest Energy Finance Corporation | Delaware | ||||
MarkWest Energy Operating Company, L.L.C. | Delaware | ||||
MarkWest Energy Partners, L.P. | Delaware | ||||
MarkWest Energy West Texas Gas Company, L.L.C. | Delaware | ||||
MarkWest Hydrocarbon, L.L.C. | Delaware | ||||
MarkWest Liberty Bluestone, L.L.C. | Delaware | ||||
MarkWest Liberty Ethane Pipeline, L.L.C. | Delaware | ||||
MarkWest Liberty Gas Gathering, L.L.C. | Delaware | ||||
MarkWest Liberty Midstream & Resources, L.L.C. | Delaware | ||||
MarkWest Liberty NGL Pipeline, L.L.C. | Delaware | ||||
MarkWest Mariner Pipeline, L.L.C. | Delaware | ||||
MarkWest Ohio Fractionation Company, L.L.C. | Delaware | ||||
MarkWest Oklahoma Gas Company, L.L.C. | Oklahoma | ||||
MarkWest Panola Utility Company, L.L.C. | Delaware | ||||
MarkWest Pioneer, L.L.C. | Delaware | ||||
MarkWest Pipeline Company, L.L.C. | Texas | ||||
MarkWest Ranger Pipeline Company, L.L.C. | Delaware |
MarkWest Texas PNG Utility, L.L.C. | Texas | ||||
MarkWest Tornado GP, L.L.C. | Delaware | ||||
MarkWest Utica Operating Company, L.L.C. | Delaware | ||||
MPL Louisiana Holdings LLC | Delaware | ||||
MPLX Delaware Basin LLC | Delaware | ||||
MPLX Fuels Distribution LLC | Delaware | ||||
MPLX Operations LLC | Delaware | ||||
MPLX Ozark Pipe Line LLC | Delaware | ||||
MPLX Terminal and Storage LLC | Delaware | ||||
MPLX Terminals LLC | Delaware | ||||
MPLXIF LLC | Delaware | ||||
Mt. Airy Terminal LLC | Delaware | ||||
MWE GP LLC | Delaware | ||||
Ohio River Pipe Line LLC | Delaware | ||||
Rendezvous Pipeline Company, LLC | Colorado | ||||
Robinson Refining Logistics LLC | Delaware | ||||
Tesoro Alaska Pipeline Company LLC | Delaware | ||||
Tesoro Alaska Terminals LLC | Delaware | ||||
Tesoro Great Plains Gathering & Marketing LLC (d/b/a Patterson Rail Terminal) | Delaware | ||||
Tesoro Great Plains Midstream LLC | Delaware | ||||
Tesoro High Plains Pipeline Company LLC | Delaware | ||||
Tesoro Logistics Finance Corp. | Delaware | ||||
Tesoro Logistics Northwest Pipeline LLC | Delaware | ||||
Tesoro Logistics Operations LLC | Delaware | ||||
Tesoro Logistics Pipelines LLC | Delaware | ||||
Tesoro SoCal Pipeline Company LLC | Delaware | ||||
West Relay Gathering Company, L.L.C. | Delaware | ||||
Western Refining Conan Gathering, LLC | Delaware | ||||
Western Refining Delaware Basin Storage, LLC | Delaware | ||||
Western Refining Logistics GP, LLC | Delaware | ||||
Western Refining Logistics, LP | Delaware | ||||
Western Refining Pipeline, LLC | New Mexico | ||||
Western Refining Terminals, LLC | Delaware | ||||
WNRL Energy GP, LLC | Delaware | ||||
WNRL Energy, LLC | Delaware | ||||
Woodhaven Cavern LLC | Delaware |