An oil refinery is a facility that processes crude oil into useful products like gasoline, diesel, and jet fuel. The refining process involves separating the different components of crude oil through methods such as distillation and chemical reactions. This transformation allows for the production of various fuels and other petrochemical products. Refineries also play a crucial role in meeting energy demands and supporting the economy. They are often located near oil fields or transportation hubs to facilitate the efficient movement of crude oil and finished products. Environmental regulations are important in refinery operations to minimize pollution and ensure safety.