The o®shore structures built in the ocean to explore oil and gas are located in depths from
very shallow water to the deep ocean. Depending on the water depth and environmental
conditions, the structural arrangement and need for new ideas required. Based on geometry
and behaviour, the o®shore structures for oil and gas development has been divided into
following categories.

p>1.2 Types of O®shore Structures

The o®shore structures built in the ocean to explore oil and gas are located in depths from
very shallow water to the deep ocean. Depending on the water depth and environmental
conditions, the structural arrangement and need for new ideas required. Based on geometry
and behaviour, the o®shore structures for oil and gas development has been divided into
following categories.

1. Fixed Platforms

² Steel template Structures

² Concrete Gravity Structures

2. Compliant tower

² Compliant Tower

² Guyed Tower

² Articulated Tower

² Tension Leg Platform

3. Floating Structures

² Floating Production System

² Floating Production, Storage and O²oading System

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