We just learned about the Oil Derrick.
Another part of how we get oil is a Drilling Rig.
We learned about oil wells and oil derricks.
A drilling rig is just a bigger bunch of machines and tools used to get oil that are all grouped together in one place called a "rig".
![drilling rig](https://upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Drilling_the_Bakken_formation_in_the_Williston_Basin.jpg/358px-Drilling_the_Bakken_formation_in_the_Williston_Basin.jpg)
(from: wikipedia - drilling rig)
Kid Facts - Blast from the past: Manual Transmission