What is offshore drilling

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OFFSHORE DRILLING:
It is a mechanical process in which a well bore is drilled into the sea bed. It is carried out in order to explore for oil wells, rocky strata and for construction in sea through pile foundations.

Offshore Drilling Rigs Platform ...
Fixed platform is about 1400ft
Complaint tower is about 1800 ft
Mini TLP is about 3300 ft to 4300 ft
FPSO is about 4500 ft to 6500 ft
TLP is about 4500 to 5000 ft.
SPAR Drilling is about 5600 ft to 8000 ft deep.
FPS drilling is about 7600 ft to 8000 ft deep.

Please look at the complexity and tough nature of civil engineering to erect such oil rigs ...Hats off to Civil Engineering ...!!