# [TECH] Petroleum Refining

**Petroleum Refining** is the separation and conversion of crude oil into fuels (petrol, diesel, jet fuel), lubricants, and petrochemical feedstocks — the primary energy source of the 20th century.

## Overview

Edwin Drake's oil well (1859, Pennsylvania) launched the petroleum industry. Early refining produced kerosene for lighting. The ICE created enormous demand for petrol. Thermal cracking (Burton, 1913) and later catalytic cracking (Houdry, 1936) allowed refiners to maximise the yield of high-octane petrol. Petrochemicals (derived from refining) became the basis for plastics, synthetic fibres, rubber, and pharmaceuticals.

## Key Actors

- **Companies**: Standard Oil/ExxonMobil (1870), Royal Dutch Shell (1907), BP (1909), Chevron (1879), Saudi Aramco (1933)
- **Inventors**: Edwin Drake (1819–1880), William Burton (1865–1954), Eugène Houdry (1892–1962)

## Key Patents

- Burton, W. US Patent 1,049,667 (1913) — thermal cracking
- Houdry, E. US Patent 1,837,963 (1931) — catalytic cracking

## Economic Value

Global oil and gas industry revenue: **USD 5.0 trillion/year** (2022, IEA). Petrochemicals add a further USD 600B/year. The combined petroleum economy is the single largest industrial sector.

## Notes

IEA *World Energy Outlook* 2023. Petrochemical market: ICIS. The petroleum industry is facing structural decline due to electrification and climate change.

## What This Enables

- **[TECH] Internal Combustion Engine** — Mass petroleum refining for gasoline and diesel was the fuel supply chain that enabled global ICE deployment.
- **[TECH] Jet Engine** — Jet fuel (kerosene/Jet-A) is a petroleum refining product; without it jet turbines cannot operate.

## Discovery Character
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**Surprise level**: Moderate — Drake's oil well (1859) was a commercially motivated drilling project, not a scientific surprise. The surprise was petroleum's eventual centrality to the 20th-century economy — nobody in 1859 foresaw that it would become the basis of plastics, synthetic rubber, pharmaceuticals, and the entire transport system.
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**Mode**: Systematic-commercial (drilling) transitioning to Edisonian (refining) then systematic (catalytic cracking). Early refining was empirical; catalytic cracking (Houdry, 1936) emerged from systematic catalyst screening — Houdry spent years testing clay catalysts before finding one that worked at scale.
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# Parents

* [TECH] Chemical Industry
* [TECH] Chemical Industry