Abstract
The offshore structures are used worldwide in different ways and for different purposes in a variety of weather conditions and water depths. The main aim of these structures is to explore and extract the gas and oil and it should works safely for approximately 25 years or more against some conditions. These structures plays a vital role on developing the economic level of the country and it is essential to be accurate in all of their planning, designing, manufacturing, transporting, and installing processes. There are many types these platforms which differ according to their function and the needed water depth. Gravity platform or condeep platform is one of these platforms which is fixed offshore platform, made by concrete. The purpose of this paper is to give some information overview about advantages, disadvantages, materials used, design, construction, transportation and installation of gravity platforms.
Highlights
The demand for energy, gas and oil is always increases and this is the main reason for creating and developing offshore structures
The offshore structures are mostly built in areas where there is gas and oil at a certain distance from the shoreline
It is essential to be accurate in planning, fabricating, designing, transporting, installing, and selecting the type of offshore platform (Sadeghi, 2008)
Summary
The demand for energy, gas and oil is always increases and this is the main reason for creating and developing offshore structures. The offshore structures are mostly built in areas where there is gas and oil at a certain distance from the shoreline. The aim of these structures is to explore and extract gas and oil and sometimes for electric purposes. Ship loading and unloading, navigation and bridges support are all uses of the offshore platforms in which oil production is considered as one of the most important uses (Sadeghi, 2007). Offshore structures are very significant and considered among the tallest structures all over the world. They should be well operated because of the environmental challenges (Nouban et al, 2017). In the case of deepwater and harsh environmental conditions, the fixed platforms are used to obtain the stiffness and strength needed for the structures (Sadeghi & Guvensoy, 2018)
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