Document Type : marine engineering
Authors
1 Department of marine industry, Graduate School of Marine Science and Technology, Science and research branch, Islamic Azad University, Tehran, Iran
2 Department of Physical Oceanography, Graduate School of Marine Science and Technology, Science and research branch, Islamic Azad University, Tehran, Iran
Abstract
Steel-structured jacket or template platforms have been extensively installed in Persian Gulf offshore oil & gas fields. For the jackets in the water depth range of 40 meters in this region, utilizing the self-upending concept has been investigated. It has been concluded that designing the light weight jackets, implementing the self-upending process for their installation operations, are economically and practically more convenient than the usual crane-assisted up-ending methods. Two methods of self-upending for light weight jackets have been presented in this paper .in first method self-upending is implemented without using ballast systems and in second model self-upending is implemented with ballast systems .Considering the required number of new installations for the “new” as well as “brown-bag” projects, and considering the existing problems and difficulties for the available marine spread, especially ready-to-work heavy floating cranes, utilizing this concept in the offshore industry for light weight jackets seems to be a considerable break-through
Keywords
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