Oil rigs are large structures used to extract oil and natural gas from beneath the Earth's surface. They can be found on land or offshore in oceans and seas. Offshore oil rigs are often built on platforms that float or are anchored to the seabed, allowing access to underwater oil reserves. These rigs are equipped with drilling equipment and machinery to reach deep into the ground. Once oil is extracted, it is transported through pipelines or tankers to refineries, where it is processed into various products like gasoline and diesel. The operation of oil rigs is crucial for the global energy supply.