I don’t understand how oil rigs just live out in the middle of the ocean??? how were they installed? do they float or are they stuck to the sea floor?? pls help
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In the middle of the ocean they use drill ships, which have 4 giant propellers constantly adjusting the position relative to GPS (google dynamic positioning).
Then they have a drilling string (pipe) that they lower to the floor where they connect to a subsea manifold system (installed long ago). The manifold controls well pressure, etc
If waves are too big, they’ll have to pull up the drill string and wait until their dynamic positioning can be used again.
In shallower water (100-400 feet) they use permanent platforms and drilling rigs float over to them with tug boats and latch on.
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