Crude Oil: Infrastructure Up to the Refinery Matters as Much as Where It Is Produced

Updated: 2026-09-05 Scope: Crude oil, from extraction and reserves through associated-gas and produced-water management, storage, pipeline and maritime transport, benchmark grades, and delivery to refineries. The product mix after refining—gasoline, diesel, jet fuel, asphalt, petrochemical feedstocks, and other products—is covered in the separate “Refined Petroleum Products” report.

Evidence coverage in this edition

This edition integrates the existing physical network, BACI 2024 trade concentration, and primary-source collection for crude oil conducted on 2026-09-05 and consolidated in internal audit files. Evidence coverage by stage is as follows. Verified (supported by primary sources) and lead (unverified; requires further research) are not mixed in the conclusions.

Partial means that some sources exist, not that a stage has been covered comprehensively. Materials from three companies or data sources (Aramco, Petrobras, and U.S. producer aggregates) cannot represent the global crude-oil industry.

Physical-network corrections

The primary-source audit led to corrections to the downstream edges from the crude-oil node. Before the review, crude oil had direct edges to several downstream nodes, including asphalt products and power generation. These were removed, leaving only crude oil → petroleum refining.

Conclusion

The structure of the crude-oil industry cannot be explained only by “where it is drilled.” Even with the same reserves or production volume, crude cannot become a marketable product without facilities to manage associated gas and water, storage capacity, pipeline and maritime networks, and receiving refinery capacity.

According to the U.S. Energy Information Administration (EIA), the United States produced an average of 13.6 million barrels per day in 2025, making it the world’s largest oil producer. This is an actual production figure; it does not establish the availability of associated infrastructure or connection to refining. EIA

The central structural fact is that a refining stage always lies between crude oil and refined products, and the properties of crude—such as API gravity and sulfur content—must match refinery specifications before it can be converted into higher-value products.

In 2025, Petrobras reported that its 10 Brazilian refineries processed 1.670 million barrels per day of oil and other feedstocks against combined net crude-distillation capacity of 1.813 million barrels per day. Domestic crude accounted for 92% of feedstock and imported crude 8%. This is one example of how refinery acceptance capacity suited to crude properties, not just the origin of the crude, shapes supply. Petrobras FY2025 Form 20-F

The overall flow

Oil field (extraction · reserves)
  ├─ Associated gas ── Flaring / recovery (regulation · IEA estimates) → Natural-gas system (outside this report)
  └─ Produced water / EOR ── Separation · injection-well treatment (EPA Class II UIC)

Crude oil (properties vary: API gravity · sulfur content, etc.)
  ├─ Storage ── Onshore tanks · strategic reserves (salt caverns · national reserves)
  ├─ Transport ── Pipelines · tanker fleets · marine terminals
  └─ Delivery to refinery (must match distillation capacity)
        └─ Petroleum refining (gasoline · diesel · jet fuel · asphalt · petrochemical feedstocks, etc.)
             See the separate “Refined Petroleum Products” report for details

Industry structure by stage

1. Upstream: extraction, reserves, and production facilities

Upstream crude production varies substantially in scale and reserve characteristics across countries and companies. EIA reports that the United States produced an average of 13.6 million barrels per day in 2025, including lease condensate. This was about 40% more, on average, than the second- and third-largest producers, Russia and Saudi Arabia, making the United States the world’s largest producer. This is actual production, not a measure of operating capacity or the availability of associated infrastructure. EIA

For reserves, Saudi Aramco disclosed that, as of December 31, 2025, the Kingdom’s reserves in fields operated by Aramco included 261.7 billion barrels of crude oil and condensate and 342.0 billion barrels of total hydrocarbons equivalent. Reserves differ from production capacity and actual output; confusing these measures can lead to a mistaken view of a resource country’s ability to supply. Saudi Aramco Annual Report 2025

At the facility level, Petrobras’s FPSO (floating production, storage, and offloading vessel) Almirante Tamandaré operates in the Búzios field in Brazil’s Santos Basin. A SEC filing says its nominal crude capacity is 225,000 barrels per day; it was authorized to operate at 270,000 barrels per day in September 2025 and recorded 250,000 barrels per day with a peak flow of 270,000 barrels per day in October. The planned Búzios 8 FPSO is scheduled to start operations in 2026, with nominal capacity of 180,000 barrels per day of crude and 254.3 million cubic feet per day of gas. SEC EDGAR: Petrobras FY2025 Form 20-F

Associated gas and produced water are upstream by-products, not simply waste streams. The IEA points to gas left unused through leaks, flaring, and venting, and estimates that eliminating non-emergency flaring could make an additional 100 billion cubic meters of gas available globally each year. This is an international aggregate estimate, not a measure of flaring or compliance at an individual field. IEA Global Methane Tracker 2026

In May 2026, U.S. EPA guidance said routine flaring of associated gas from new oil wells could continue in limited circumstances after the May 7, 2026 phase-out date. EPA

For produced water—a fluid that may include formation water, injection water, and chemicals added during separation and treatment—EPA explains under oil and gas effluent guidelines and Class II Underground Injection Control (UIC) rules how it is typically injected thousands of feet underground into rock formations isolated from drinking-water sources. EPA: Effluent guidelines / EPA: Class II UIC wells

2. Midstream: storage, pipelines, and maritime transport

Crude moves from producing areas to refineries through storage and transport infrastructure. The key point is that storage and transport capacity are independent variables affecting supply reliability.

The U.S. Department of Energy (DOE) operates the Strategic Petroleum Reserve (SPR), which stores federally owned emergency crude in underground salt caverns at four sites in Texas and Louisiana. Authorized storage capacity is 714 million barrels. Contracted drawdown capacity at marine terminals totals 2.22 million barrels per day; a single DOE-owned marine terminal can draw down 400,000 barrels per day. SPR crude is released through competitive sales when the President determines that a release is required under the Energy Policy and Conservation Act (EPCA). DOE: SPR

The four sites—Bryan Mound, Big Hill, West Hackberry, and Bayou Choctaw—are organized around three pipeline drawdown systems: Seaway, Texoma, and Capline. Each system connects to at least one major refining center, interstate crude pipeline, and marine terminal. Individual salt caverns hold 6–37 million barrels, typically about 10 million. DOE: SPR storage sites

As a commercial example, Petrobras/Transpetro reported that in 2025 it owned or operated 7,768 km of pipelines (6,928 km owned and 840 km third-party), a fleet of 115 vessels (26 owned and 89 chartered), and 60 terminals. It supplies Brazil and world markets through this logistics network. SEC EDGAR: Petrobras FY2025 Form 20-F

3. Benchmark crude and quality standards

Crude is not homogeneous: API gravity, sulfur content, and other properties affect transaction prices and refinery design. ASTM International’s D287 standard defines a test method for determining API gravity from specific gravity at 60°F (15.56°C) using a glass hydrometer, for crude and petroleum products handled as liquids with Reid vapor pressure of 26 psi (180 kPa) or less. This describes the scope of the standard, not the acceptance specification for any individual transaction. ASTM D287

The American Petroleum Institute (API) says its standards, developed through an ANSI-accredited process and widely adopted by industry and regulators, include MPMS Chapter 9.1 on density, relative density, and API gravity of crude and liquid petroleum products, and Chapter 10.3 on centrifuge tests for water and sediment in crude and fuel oils. API standards plan

These standards provide an institutional basis for objective measurement of crude properties. This review did not obtain transaction specifications that would verify the specific properties underlying price differences among benchmarks such as WTI and Brent, which also reflect origin and logistics.

4. Delivery to refining

Crude realizes value as fuel and chemical feedstock only after a refinery can receive and process it. Petrobras reported processing 1.670 million barrels per day of oil and other feedstocks at its 10 Brazilian refineries in 2025 and producing 1.732 million barrels per day of petroleum products. Its feedstock was 92% Brazilian crude and 8% imported crude; combined net crude-distillation capacity—the nominal capacity available to operate—was 1.813 million barrels per day. SEC EDGAR: Petrobras FY2025 Form 20-F

Across U.S. refineries, EIA reports that an average of 0.84 gallons of asphalt and road oil was produced per 42-gallon barrel of crude input in 2023. This is a post-refining product yield, not evidence that crude is directly used as asphalt or power-generation fuel. EIA also says power generation uses refined heating oil or fuel oil; this review found no primary source for equipment or contracts that directly supply crude to power producers. EIA: Refinery inputs and outputs / EIA: Use of oil

Product mixes after refining, the branches into chemical feedstocks and fuels, and links to petrochemicals are covered in the separate “Refined Petroleum Products” report.

5. How to evaluate companies

Companies should not be collected as a flat list of “famous oil-producing countries’ companies.” Research should identify their roles and the facts that primary sources can establish.

Primary-source materials verified with URLs in this review include U.S. EIA (production aggregates), Saudi Aramco (reserves), Petrobras (production facilities, transport, storage, and refining), DOE (SPR), ASTM International and API (standards), and U.S. EPA and IEA (by-products and environmental regulation). See the internal audit file webapp/scripts/output/industry-structure-source-library-v2/audits/2026-09-05/2709-crude-petroleum.md for details and unverified leads. It is an internal memo containing classification-code references and should not be presented directly to readers.

6. Bottlenecks and business opportunities

Data caveats

Sources