1. Fixed platforms: These are structures that are fixed to the seafloor and are used for drilling and production operations.
2. Floating platforms: These are structures that float on the surface of the water and are used for drilling and production operations.
3. Subsea templates: These are structures that are placed on the seafloor and are used to connect a number of wells to a central production platform.
4. Tension leg platforms: These are structures that are anchored to the seafloor using tensioned cables or tendons and are used for drilling and production operations.
5. Spar platforms: These are structures that are anchored to the seafloor using a vertical cylinder and are used for drilling and production operations.
6. Floating production storage and offloading (FPSO) vessels: These are vessels that are used for storing and offloading produced oil and gas.
7. Subsea wells: These are wells that are drilled directly into the seafloor and are used for production operations.
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