Structural Design of a Fixed Offshore Platform

Abstract

Fixed platforms are used in the field of oil and gas exploration and are characterized by their great height, which allows the establishment of production and processing facilities on their surface, its heavy weight is a result of the size of the metal structures that make up it, and its stable foundations ensure the stability of the platform and its ability to bear various loads. This study explains the structural design of a fixed platform under the influence of environmental conditions on the Libyan coast, the loads to which it is subject, and the depths required to erect and stabilize the platform in the appropriate place to extract oil or gas using the program  (Structural Analysis Computer System).  The structural study was conducted on one of the four columns on which the platform rests, due to the equal environmental conditions and the forces and moments exposed to them. Information about the platform located in the city of Sabratha was collected from Melita Oil and Gas Company, it was found that the maximum shear force to which the pillars are exposed is 589 KN and the largest torque is 1988 KN, and the permissible stress for all parts of the platform has been reached. This will ensure the   stability of the platform and thus achieve the required safety.