24/09/2026
𝗧𝘆𝗽𝗲𝘀 𝗼𝗳 𝗢𝗳𝗳𝘀𝗵𝗼𝗿𝗲 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 , 𝗔 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗢𝘃𝗲𝗿𝘃𝗶𝗲𝘄
Offshore platforms are broadly classified based on their structural support system, mobility, water depth, station-keeping method, and functional requirements. The selection of a platform concept is driven by parameters such as water depth, metocean conditions, reservoir characteristics, installation methodology, and required operational life.
🔹 𝟭. 𝗙𝗶𝘅𝗲𝗱 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺
Jacket-type and gravity-based structures are founded directly on the seabed and are typically used where permanent support is required. Structural design must consider in-place strength, environmental loads, fatigue, pile soil interaction, and foundation integrity.
🔹 𝟮. 𝗝𝗮𝗰𝗸-𝗨𝗽 𝗥𝗶𝗴
A mobile offshore unit with retractable legs that are lowered to the seabed, allowing the hull to be elevated above the water surface. Critical engineering considerations include leg strength, spudcan–soil interaction, preload conditions, air gap, and environmental loading.
🔹 𝟯. 𝗦𝗲𝗺𝗶-𝗦𝘂𝗯𝗺𝗲𝗿𝘀𝗶𝗯𝗹𝗲 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺
A floating structure supported by submerged pontoons and columns. Its hydrodynamic characteristics provide relatively good motion performance in waves. Engineering assessments commonly include global motion response, stability, station keeping, mooring analysis, fatigue, and structural strength.
🔹 𝟰. 𝗗𝗿𝗶𝗹𝗹𝘀𝗵𝗶𝗽
A ship-shaped drilling unit designed primarily for deepwater drilling. It generally uses dynamic positioning (DP) or mooring systems for station keeping. Key engineering areas include hull strength, drilling loads, riser analysis, DP capability, intact/damage stability, and fatigue assessment.
🔹 𝟱. 𝗧𝗲𝗻𝘀𝗶𝗼𝗻 𝗟𝗲𝗴 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 (𝗧𝗟𝗣)
A buoyant floating structure restrained by vertical tendons connected to seabed foundations. The tendon system provides high vertical stiffness and limits heave motion. Design requires assessment of tendon loads, hull–tendon interaction, global motions, fatigue, and foundation behaviour.
🔹 𝟲. 𝗦𝗣𝗔𝗥 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺
A deep-draft cylindrical floating structure with substantial buoyancy below the waterline. Its configuration provides favourable motion characteristics for deepwater production.
🔹 𝟳. 𝗙𝗣𝗦𝗢
A Floating Production, Storage and Offloading unit combines hydrocarbon processing, storage, and offloading on a floating vessel. Engineering involves hull structural assessment, topside integration, turret/mooring analysis, cargo containment, fatigue, stability, and process-system integration.
🔹 𝟴. 𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝘁 𝗧𝗼𝘄𝗲𝗿
A slender, flexible fixed structure designed to accommodate environmental-induced lateral movement while remaining connected to the seabed.
