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. These rigs are equipped with drilling equipment that reaches deep into the ground to access valuable resources. Workers on oil rigs play a crucial role in ensuring the extraction process is safe and efficient. Offshore oil rigs are often massive platforms that float on water, while land rigs are typically smaller and more mobile. The extracted oil is then transported to refineries, where it is processed into various products like gasoline and diesel.