Sep 3, 2025 · Petroleum, complex mixture of hydrocarbons that occur in Earth in liquid, gaseous, or solid form. The term is often restricted to the liquid form, commonly called crude oil, but, as …

Jul 2, 2025 · Petroleum, or crude oil, is a fossil fuel and nonrenewable source of energy.

Jun 12, 2023 · What petroleum products are made from crude oil? After crude oil is removed from the ground, it is sent to a refinery where different parts of the crude oil are separated into …

Apr 1, 2025 · Petroleum extraction involves the process of locating and bringing crude oil and natural gas to the surface from deep within the earth’s crust. This process is a critical function …

Aug 21, 2025 · Explore what petroleum is, why it's crucial for the global economy, and learn about ways to invest in the oil industry, including stocks, ETFs, and futures.

Read the latest articles of Petroleum at ScienceDirect.com, Elsevier’s leading platform of peer-reviewed scholarly literature

Petroleum has historically been the most-consumed energy source in terms of total annual U.S. energy consumption. We use petroleum products to propel vehicles, to heat buildings, and to …

Petroleum production, recovery of crude oil and, often, associated natural gas from Earth. Less dense than surrounding water, petroleum migrated up from its source beds through porous …

Petroleum Service Company offers lubricants for industrial, manufacturing, automotive, fleet and aviation applications, as well as greases, race fuels, coatings, fuel additives, and more.

CITGO Petroleum Corporation is a refiner, transporter and marketer of motor fuels, lubricants, petrochemicals and other industrial products.