Marathon Garyville Refinery

Marathon Petroleum Company LP · Marathon Petroleum Corporation · Garyville, LA

Operating PADD3 asphalt

Marathon Petroleum's oil refinery in Garyville, Louisiana Photo: Earthworks · CC BY 3.0 · source

bpd crude capacity · EIA 2026: 617,000
pipelines it injects into: 3
delivery points reachable: 59
terminals on those points: 158
events on record: 4

Capability

Crude distillation 617,000 bpd operable, 617,000 operating (EIA-820, as of 2026-01-01). Downstream units below, barrels per calendar day.

Conversion — makes gasoline and diesel from heavier oil

Catalytic cracking (FCC)	142,500
Hydrocracking — gas oil	123,500
Delayed coking	105,000

Upgrading

Catalytic reforming — low pressure	133,000
Vacuum distillation	299,000 sd

Treating — meets sulfur specs

Hydrotreating — diesel	181,500 sd
Hydrotreating — kerosene & jet	90,500 sd
Hydrotreating — gasoline	128,000 sd
Hydrotreating — naphtha / reformer feed	127,500 sd
Hydrotreating — heavy gas oil	106,000 sd

Production capacity

Alkylates · 52,500 Asphalt road oil · 33,000 Isomerization isobutane · 23,000 Isomerization isopentane isohexane · 35,500 Petcoke market · 33,275 Sulfur short tons day · 1,402

Crude slate

Primarily heavy sour crude oils (via LOOP/marine imports), plus Canadian heavy/Bakken crude via the reversed Capline since 2022.

Crude in & products out

Direction	Mode	Route	Point / origin	Products	Source
crude in	marine	Louisiana Offshore Oil Port (LOOP) Reference site states crude is 'supplied via the Louisiana Offshore Oil Port (LOOP)', primarily heavy sour crude oils.	offshore deepwater port / waterborne imports	crude	source
crude in	pipeline	Capline Pipeline Capline reversed to full southbound service Jan 1, 2022; the pipeline operator (Marathon Pipe Line, a Marathon affiliate) explicitly names Garyville as a served destination for the reversed, southbound Canadian/Bakken crude.	Patoka, IL hub via the St. James, LA market hub	crude	source
crude in	pipeline	LOCAP Pipeline Consistent with the LOOP crude-supply finding above; LOCAP is the documented onward pipeline link from LOOP's onshore terminal to Mississippi River corridor refineries, though this specific refinery tie-in was not separately re-confirmed this session beyond the general LOOP reference.	LOOP onshore storage (Clovelly, LA) to St. James area refineries	crude	source
products out	pipeline	Bengal Oil Products Pipeline / Colonial Pipeline Reference site states the refinery 'is connected to the Bengal Oil Products Pipeline' and 'products can be shipped via the Colonial Oil Products Pipeline' -- consistent with the Bengal JV (Colonial/Shell Midstream) linking southern Louisiana refineries to Colonial's Baton Rouge origin.	Baton Rouge origin area (via Bengal connection)	gasoline distillate	source
products out	pipeline	Plantation Pipeline Plantation Pipeline's documented origin point is Baton Rouge specifically (not Garyville); no source reviewed confirms a direct Garyville injection point onto Plantation. Treat as unconfirmed.	unclear -- see notes	gasoline distillate	source
products out	pipeline	Centennial Pipeline Centennial's Louisiana segment runs Beaumont, TX to Longville, LA (western/central LA) and north to Illinois -- it does not pass through or originate at Garyville (St. John the Baptist Parish, on the river between New Orleans and Baton Rouge). No source ties Garyville product to Centennial.	unclear -- see notes	gasoline distillate	source
products out	truck rack	Garyville MPC Asphalt Terminal Company-named on-site asphalt terminal -- direct company asset.	at refinery	asphalt	inferred
products out	marine	Marathon Petroleum Company LLC - Terminal Transport and Marine Division Company-named marine/barge division -- direct company asset, consistent with the refinery's Mississippi River frontage.	at refinery / Mississippi River	gasoline distillate	inferred

Pipeline reach

Pipeline	Injects at	Delivery points	Terminals	Lowest ¢/bbl	Median ¢/bbl
Plantation Pipeline	Garyville (St. John the Baptist Parish), via Marathon Pipe Line (joint tariff 156.29.0)	29	147	114.65	251.61
Marathon Pipe Line (MPLX)	Garyville (St. John the Baptist Parish), LA same city	28	11	91.04	255.35
Bengal Pipeline	Garyville (Saint John the Baptist Parish) same city	2	0	69.98	69.98

Substitutes

Other refineries injecting into the same pipelines — the supply that could backfill an outage here.

Events

2024-09 outage
Regulators (state/EPA) reported 20 alleged safety-related breakdowns at Garyville following the 2023 tank fires. source
2023-08-25 fire
Major naphtha/diesel storage-tank fire (two tanks, one holding 150,000 bbl sour naphtha, spread to an adjacent 300,000 bbl diesel tank); units shut, 2-mile evacuation ordered then lifted; restart began Aug 28. Described by Marathon as the third blaze at the plant in less than a year. source
2022-02-21 fire
Fire/explosion at the refinery, extinguished same day; five contract workers injured. source
2021-08-29 outage
Sustained damage in Hurricane Ida; shut in ahead of landfall, ran on generators during repairs, restarted by Sept. 10, 2021. source

Rates are pipeline line-haul transcribed from published FERC tariffs; every figure cites its tariff and item. Cost to serve (netback) adds origin spot price and destination fees. "Confirmed" links match a tariff delivery point to the facility; "same city" means the point is in the facility's city — plausible, not proof; "per research" means the facility's research profile names the pipeline as an outlet.