A review of floating semisubmersible hull systems: Column stabilized unit

Abstract

Column stabilized semisubmersible is one of the most commonly used hull systems for the design and development of drilling and production platforms used for offshore deep water operations. Recent reconfiguration and design alterations have improved its hydrodynamic behaviour in rough weather conditions and, thus, its application and functionality in ocean engineering. Semisubmersible dry-trees applications and large wind turbine foundation systems in ultra-deep waters require high payload integration for reduced motion responses in all degrees of freedom. This paper presents a review of recent industrial and academic contributions to the development of column stabilized semisubmersible hulls used for deep water operations. It also provides an overview of the motion and structural attachments of semisubmersibles. The type and formation of dry-trees semisubmersibles are discussed. The dynamic behaviour and comparative advantages of them are also explained.

Composite risers for deep waters using a numerical modelling approach

“…The methodology for the local design involved using the load cases to obtain stress values for each composite layer for different thicknesses. Details on some theories on the stresses are available in literature (Ye, 2016;. The first step in the finite element analysis is to predict the riser behaviour, with some initial values estimated for the composite layers.…”

“…Thus, the composite structure becomes lightweight with low bending stiffness. Generally, marine risers are not independent structures, as they depend on other offshore structures like platforms and semisubmersibles (Odijie, Wang, et al 2017;Odijie, Quayle, et al 2017). The behaviour of composite risers in water, as offshore-dependent structures, are subject to environmental loads (Amaechi et al 2018;DNVGL 2017).…”

Feasibility Limits for a Hybrid System with Ocean Wave and Ocean Current Power Plants in Southern Coast of Brazil

“…There are many technologies available in other areas of ocean resource exploitation [5] [6] [7] [8] [9] that can be adapted for application in the field of energy generation from renewable resources [9] [10]. There are also many initiatives for the development of means and devices for converting energy from ocean waves and ocean currents, among other forms of energy available in the oceans [2] [11] [12].…”

“…In this scenario, an important tool for managers looking for alternatives to obtain energy supplies that are reliable and that prove to be viable is the establishment of feasibility spaces for investment in new energy alternatives. The concept recently presented [5] is related to the energy resource to be used and is also related to the technology (under development) to be applied, obviously depending on its stage of technical and economic maturity, and is also related to the local characteristics of the energy system in which the technological solution will be inserted.…”

Dynamic Analysis of Suction Stabilized Floating Platforms

“…Apart from the general platform designs, a barge type floating offshore platform design for the harvesting wind energy was discussed and analyzed in [6]. A review of the column stabilized semisubmersible hulls, types and formation of dry-trees semisubmersible and their comparative advantages along with dynamic behaviour is elucidated in [7]. A platform could remain afloat with the buoyant force exerted on it by the sea.…”