The petroleum industry involves the exploration, extraction, refining, and distribution of crude oil and natural gas. It plays a crucial role in the global economy, providing energy for transportation, heating, and electricity generation. Companies in this sector operate oil fields, refineries, and pipelines to deliver products like gasoline, diesel, and jet fuel. This industry is divided into three main sectors: upstream, midstream, and downstream. The upstream sector focuses on exploration and production, while the midstream sector handles transportation and storage. The downstream sector is responsible for refining and selling petroleum products to consumers and businesses.