Producer
Motiva Enterprises LLC
Privately held US refining and marketing company (HQ Houston TX); joint venture 100% owned by Saudi Aramco since Shell's divestiture (2017). Operates the largest single US refinery: Port Arthur TX at 630,000 bpd (some sources: 635,000 bpd) — larger than any other US refinery by nameplate capacity. The Port Arthur refinery was built specifically to process medium-sour Saudi Arabian crude: its coking, hydrocracking, and desulfurization units are optimized for Arab Light and Arab Medium grades. Motiva's refinery is simultaneously the largest US refinery AND the primary US destination for Saudi crude oil — a single asset that anchors both the world's largest refinery company (Saudi Aramco) and the US-Saudi petrodollar relationship.
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Inputs supplied
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Goods downstream
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Facilities
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Stories
What they make
1 input Motiva Enterprises LLC supplies
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Goods downstream
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Where they make it
3 facilities
Louisiana Offshore Oil Port (LOOP) →
USLouisiana · port
Louisiana Offshore Oil Port (LOOP); located ~18 miles offshore in the Gulf of Mexico (Lafourche Parish, LA). Only US deepwater port capable of offloading VLCC (Very Large Crude Carriers, 2+ million barrel tankers) at full draft. Handles ~10-15% of all US crude oil imports — primary entry point for Saudi, Iraqi, Angolan, and other medium-sour crude imports too large to enter through Mississippi River terminals. Connected to onshore storage (Clovelly Hub, ~50 million barrel capacity) and multiple Gulf Coast refinery pipeline systems. LOOP is the US Gulf Coast's critical import infrastructure for heavy crude grades not producible domestically. NOTE: LOOP is industry-owned consortium (Valero, Marathon, Shell, Murphy, others); listed under motiva for KG proximity. Source: https://www.loopllc.com/About-LOOP
Motiva Port Arthur Refinery →
USTexas · refinery
Largest US oil refinery at 630,000 bpd capacity; 100% Saudi Aramco-owned (formerly 65% Aramco / 35% Shell). Expanded from 285K to 600K+ bpd in 2012. Processes primarily Saudi and Canadian heavy crude.
Motiva Port Arthur Refinery (TX) →
USTexas · refinery
Port Arthur, TX; 630,000 bpd nameplate capacity — largest single US refinery. Processes primarily Saudi Arabian medium-sour crude (Arab Light, Arab Medium) delivered by VLCC tankers through Sabine Pass and the Louisiana Offshore Oil Port (LOOP). Coking, hydrocracking, desulfurization, and catalytic cracking units configured for heavy-sour crude. 100% Saudi Aramco owned since Shell divestiture 2017. Source: https://www.motivaenterprises.com/our-operations/refinery/
What else they do
Business segments
The company's full revenue map — where this supply-chain role fits within their broader business.
Port Arthur Refinery (US's Largest — 630,000 bpd)
85%Fuels Marketing & Shell Brand (Historical)
10%Base Oils (Lubricants) — Expanding
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Intelligence
What's known
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Did you know2017
Motiva Enterprises LLC — the company operating the largest oil refinery in the United States — is 100% owned by Saudi Aramco, the Saudi Arabian national oil company, which is majority-owned by the Kingdom of Saudi Arabia. The Port Arthur, Texas refinery at 630,000 barrels per day is simultaneously: (1) the largest single petroleum refining asset in the US, producing ~3.5% of US total refining capacity; (2) the primary physical US destination for Saudi crude oil, the refinery's entire design is optimized for Arab Light and Arab Medium grades; and (3) the largest US industrial asset owned by a foreign sovereign wealth entity. American motorists buying gasoline in the US Gulf Coast and Southeast region may unknowingly be purchasing fuel produced by a Saudi government-owned refinery, using Saudi government-owned crude oil. The US-Saudi petrodollar relationship is physically anchored in a single Texas refinery.
Reuters ↗Concentration2025
Motiva Enterprises — which operates the largest US oil refinery (Port Arthur TX, 630,000 bpd) — has been 100% Saudi Aramco-owned since 2017 when Shell exited the joint venture. This means the single largest US refinery is owned by Saudi Arabia's state oil company, a member of OPEC+ that coordinates production cuts affecting US gasoline prices. The ownership structure has not triggered CFIUS review.
Bloomberg ↗Origin2023
Motiva Enterprises was formed in 1998 as a 50/50 joint venture between Saudi Aramco and Shell Oil Company to operate three US refineries (Port Arthur TX, Convent LA, and Norco LA). Over time, Convent and Norco were sold or reassigned; Port Arthur became the focus. The Port Arthur refinery was originally built by Texaco in the 1900s and expanded multiple times; Shell and Aramco invested heavily in the early 2000s to upgrade it to 635,000 bpd. In 2017, Shell divested its 50% stake in Motiva for ~$2.2B, making Saudi Aramco the sole owner. This transfer made Motiva the only major US petroleum refinery entirely owned by a foreign sovereign state — a shift that passed with limited public attention despite its strategic significance.
Motiva Enterprises LLC ↗Capacity2023
The Port Arthur refinery's design creates a structural US-Saudi interdependency. The refinery's coking and vacuum distillation units were specifically sized and configured for processing medium-sour Saudi crudes (Arab Light, ~34° API, 1.8% sulfur; Arab Medium, ~31° API, 2.6% sulfur). While Port Arthur can process other crude grades, its economics are best with Saudi supply. If Saudi Arabia curtailed crude exports to Motiva — as a diplomatic lever, production cut compliance, or geopolitical retaliation — Port Arthur would either run suboptimally on substitute crudes or reduce throughput. Either scenario would tighten Gulf Coast gasoline supply and raise US pump prices. A bipartisan US energy independence policy goal coexists with the continued operation of the largest US refinery as an asset of the Saudi government.
US Energy Information Administration ↗