【Commodity Basics】How Physical Crude Oil Trading Works: A Basic Overview
Quote from chief_editor on May 26, 2026, 3:30 pmPhysical crude oil trading explained for beginners. Learn how crude grades, benchmarks, pricing, and cargo deals work in the real oil market.
Physical crude oil trading refers to the buying and selling of actual crude oil cargoes — barrels loaded onto tankers and delivered to refineries — as distinct from financial trading in crude oil futures or derivatives contracts. Physical crude oil is bought and sold by national oil companies, major integrated oil companies, independent commodity trading houses, and refineries. The physical market determines where crude flows, which refineries run which grades, and how production from different origins reaches consuming regions.
Physical crude oil is not a single uniform commodity. Crude oil refers to a broad category of hydrocarbon liquids that vary in two primary characteristics: density (measured as API gravity) and sulfur content. Lighter crudes (higher API gravity) yield more high-value products like gasoline and jet fuel when refined. Lower-sulfur crudes (called sweet crudes) are easier and cheaper to refine than higher-sulfur crudes (called sour crudes). These characteristics directly affect a crude's price relative to benchmark.
How Crude Oil is Priced and Referenced
Crude oil pricing in physical markets uses three primary benchmarks. Brent crude — produced from the North Sea — is the dominant global benchmark and the reference for European, West African, and increasingly Middle Eastern crude oil pricing. West Texas Intermediate (WTI) crude is the primary benchmark for North American crude markets. Dubai and Oman crude are the primary references for Middle Eastern crude sold into Asia.
Physical crude trades are priced as a differential to one of these benchmarks. For example, a cargo of Nigerian Bonny Light crude — a sweet, light crude from West Africa — might be priced at Dated Brent plus assume $1.50 per barrel, reflecting its quality premium over the Brent benchmark. A cargo of Iraqi Basra Heavy crude — a sour crude with lower API gravity — might be priced at Dated Brent minus assume $3.00 per barrel, reflecting its quality discount and higher refining cost.
Dated Brent refers to a physical Brent-quality crude available for loading within a specific forward window, typically 10 to 25 days from the trade date. The Dated Brent assessment is published daily by S&P Global Commodity Insights (formerly Platts) and reflects actual market bids, offers, and transactions reported by market participants.
How a Physical Crude Oil Deal Is Structured
A typical physical crude oil transaction involves a seller — often a national oil company like Saudi Aramco, Nigeria's NNPC, or a trading company holding a cargo — and a buyer, which is typically a refinery, an integrated oil major, or a trading company that resells the cargo.
The transaction specifies the crude grade, volume (in barrels or metric tons), loading port and window, destination, pricing formula, payment terms, and the quantity measurement and quality inspection procedures. Standard oil cargo sizes range from approximately 500,000 barrels for smaller tankers (Aframax or Suezmax class) to 2 million barrels for Very Large Crude Carriers (VLCCs).
First, buyer and seller agree on terms — usually by telephone or electronic communication between traders. Then, a confirmation telex or sales and purchase agreement (SPA) is exchanged within 24 to 48 hours documenting the agreed terms. Once the vessel is nominated by the seller and accepted by the buyer, loading proceeds at the specified terminal. Bills of Lading (BLs) are issued at loading, and the cargo is priced against the benchmark over the agreed pricing period. Payment typically falls due 30 days after the Bill of Lading date under standard term contracts between majors and national oil companies.
Physical crude oil trading combines knowledge of crude quality, refinery economics, freight markets, and pricing mechanics — the ability to identify which grade fits which refinery at which cost, relative to the benchmark, is where physical crude traders generate value.
Physical crude oil trading explained for beginners. Learn how crude grades, benchmarks, pricing, and cargo deals work in the real oil market.
Physical crude oil trading refers to the buying and selling of actual crude oil cargoes — barrels loaded onto tankers and delivered to refineries — as distinct from financial trading in crude oil futures or derivatives contracts. Physical crude oil is bought and sold by national oil companies, major integrated oil companies, independent commodity trading houses, and refineries. The physical market determines where crude flows, which refineries run which grades, and how production from different origins reaches consuming regions.
Physical crude oil is not a single uniform commodity. Crude oil refers to a broad category of hydrocarbon liquids that vary in two primary characteristics: density (measured as API gravity) and sulfur content. Lighter crudes (higher API gravity) yield more high-value products like gasoline and jet fuel when refined. Lower-sulfur crudes (called sweet crudes) are easier and cheaper to refine than higher-sulfur crudes (called sour crudes). These characteristics directly affect a crude's price relative to benchmark.
How Crude Oil is Priced and Referenced
Crude oil pricing in physical markets uses three primary benchmarks. Brent crude — produced from the North Sea — is the dominant global benchmark and the reference for European, West African, and increasingly Middle Eastern crude oil pricing. West Texas Intermediate (WTI) crude is the primary benchmark for North American crude markets. Dubai and Oman crude are the primary references for Middle Eastern crude sold into Asia.
Physical crude trades are priced as a differential to one of these benchmarks. For example, a cargo of Nigerian Bonny Light crude — a sweet, light crude from West Africa — might be priced at Dated Brent plus assume $1.50 per barrel, reflecting its quality premium over the Brent benchmark. A cargo of Iraqi Basra Heavy crude — a sour crude with lower API gravity — might be priced at Dated Brent minus assume $3.00 per barrel, reflecting its quality discount and higher refining cost.
Dated Brent refers to a physical Brent-quality crude available for loading within a specific forward window, typically 10 to 25 days from the trade date. The Dated Brent assessment is published daily by S&P Global Commodity Insights (formerly Platts) and reflects actual market bids, offers, and transactions reported by market participants.
How a Physical Crude Oil Deal Is Structured
A typical physical crude oil transaction involves a seller — often a national oil company like Saudi Aramco, Nigeria's NNPC, or a trading company holding a cargo — and a buyer, which is typically a refinery, an integrated oil major, or a trading company that resells the cargo.
The transaction specifies the crude grade, volume (in barrels or metric tons), loading port and window, destination, pricing formula, payment terms, and the quantity measurement and quality inspection procedures. Standard oil cargo sizes range from approximately 500,000 barrels for smaller tankers (Aframax or Suezmax class) to 2 million barrels for Very Large Crude Carriers (VLCCs).
First, buyer and seller agree on terms — usually by telephone or electronic communication between traders. Then, a confirmation telex or sales and purchase agreement (SPA) is exchanged within 24 to 48 hours documenting the agreed terms. Once the vessel is nominated by the seller and accepted by the buyer, loading proceeds at the specified terminal. Bills of Lading (BLs) are issued at loading, and the cargo is priced against the benchmark over the agreed pricing period. Payment typically falls due 30 days after the Bill of Lading date under standard term contracts between majors and national oil companies.
Physical crude oil trading combines knowledge of crude quality, refinery economics, freight markets, and pricing mechanics — the ability to identify which grade fits which refinery at which cost, relative to the benchmark, is where physical crude traders generate value.