Oil wells are structures created to extract crude oil from underground reservoirs. They are drilled into the earth's surface, reaching deep rock formations where oil is trapped. Once a well is established, various methods are used to bring the oil to the surface, including pumping and natural pressure. The process of drilling an oil well involves specialized equipment and techniques to ensure safety and efficiency. Oil wells can vary in depth and production capacity, depending on the geological conditions of the area. Successful oil extraction can significantly impact local economies and global energy markets, making oil a vital resource.