Is a oil rig and oil well a same thing?

No, an oil rig and an oil well are not the same thing. An oil rig is a large structure used for drilling and extracting oil from beneath the Earth's surface, often located offshore or on land. An oil well, on the other hand, is the actual hole drilled into the ground that allows oil to flow to the surface. While oil rigs are used to create and manage oil wells, they serve different purposes in the oil extraction process.