system
Given the following post, respond as if you're commenting on Reddit:
human
ELi5: how do people build oil rigs in the oceans? How do we put the giant pillars into the ocean floor?
gpt
We don't actually anchor them to the floor. Those deep water platforms actually float there with anchor lines to keep them stable. The drill and pump mechanism is sent down some somewhat flexible tubing.

There was an article in The Economist about towing one to a scrap yard in Turkey.