Petroleum industry

The petroleum industry is a massive global network of processes. It involves the exploration, extraction, refining, and transportation of petroleum. This industry is the largest in the world when measured by dollar value. It provides the raw materials needed for modern industrial civilization. We rely on petroleum for many daily items. It is used to create fuel oil and gasoline. Beyond fuel, it is a key ingredient for plastics, fertilizers, pesticides, and even medicines.

Petroleum is a naturally occurring liquid found in rock formations. It consists of a complex mixture of hydrocarbons and organic compounds. Scientists believe it forms from the remains of ancient plankton. These tiny organisms died hundreds of millions of years ago. Their carbon-rich remains were covered by layers of mud and silt. As these layers sank deep into the Earth's crust, they were exposed to intense heat and pressure. This process gradually transformed the organic residue into oil reservoirs.

To manage these complex tasks, the industry is divided into three stages. The first stage is called upstream. This involves the exploration for oil and the extraction of crude oil from the ground. The second stage is midstream. This stage focuses on the transportation and storage of the crude oil. It often uses massive oil tankers and long pipelines. The final stage is downstream. This stage involves refining the crude oil into various useful end products.

Human history with oil is very long, spanning over 5,000 years. Early humans used unrefined oil for warfare and to keep fires burning. For a long time, other sources provided more energy. In the 19th century, whale oil was used for lighting. Wood and coal were the main sources for heating and cooking. Everything changed when people discovered they could extract kerosene from crude oil. Kerosene became a vital fuel for lamps and heating. This discovery made petroleum one of the most valuable commodities on Earth.

Many important discoveries shaped the modern industry. In 1853, Samuel Kier established the first American refinery in Pittsburgh. In 1858, James Miller Williams discovered oil in Ontario, Canada. He extracted 1.5 million liters of crude oil by 1860. In 1859, Edwin Drake drilled a famous well in Pennsylvania. This well is often considered the first true modern oil well. In 1878, Ludvig Nobel revolutionized transport by launching the first oil tanker. By the 1920s, oil fields were established in many nations, including Sweden and Venezuela.

Technology has allowed us to find oil in more difficult places. In the early 1930s, the Texas Company created mobile steel barges for drilling. In 1937, companies began using fixed platforms in the waters of Louisiana. A major milestone occurred in 1947. The Kermac No. 16 well was the first oil discovery drilled out of sight of land. Since then, deep-water drilling and drillships have expanded our reach. We can now find oil far beneath the ocean surface.

Today, the scale of petroleum use is enormous. The world consumes approximately 36 billion barrels of oil every year. Developed nations are the largest consumers of this resource. Different regions rely on oil for different proportions of their energy. For example, the Middle East gets 53% of its energy from oil. In North America, that number is about 40%. In Africa, it is 41%, and in Europe and Asia, it is 32%.

Petroleum is also a major factor in global economics and politics. In 2022, the net income of the global oil and gas industry reached a record US$4 trillion. This was due to factors like higher fuel prices and falling debt levels. Control over oil supplies has even influenced major historical events. During World War II, access to oil in the Middle East and the Dutch East Indies was critical. Today, the industry remains a central part of how nations function and interact.