The Deepwater Semi-Platform is one of the most important equipments for the development of deepwater oil and gas fields. As a large deepwater floating structure, it is a comprehensive development and processing center and it can provide oil and gas processing, storaging and loading/unloading, power supply, personnel life and other functions. The design of a Deepwater Semi-Platform in China is still in its infancy, facing great challenges, especially for the hull piping stress analysis. Taking the hull piping of a Deepwater Semi-Platform as an example, based on CAESAR II and ANSYS software and the relevant data at home and abroad, using ASME B31.1 as the calculation and evaluation standard, the calculation method for hull piping stress analysis of Deepwater Semi-Platform has been studied, the hull piping loads suitable for harsh environment and complex hull deformations have been selected, the hull piping stress analysis load cases have been compiled, and the hull super-high penetration riser, non-metallic piping of ballast system, SCR(Steel Catenary Riser) riser and a series of complex piping stress analysis have been studied. The new type pipe support suitable for the hull structure is proposed, and the best recommended scenario is obtained. The best recommended scenario and a better example design for the future of hull piping has been provided.
The Deepwater Semi-Platform is one of the most important equipments for the development of deepwater oil and gas fields. The design of a Deepwater Semi-Platform in China is still in its infancy, facing great challenges, especially for the hull piping stress analysis. Taking the hull piping of a Deepwater Semi-Platform as an example, based on CAESAR II and ANSYS software and the relevant data, using ASME B31.1 as the calculation and evaluation standard, the calculation method for hull piping stress analysis of Deepwater Semi-Platform has been studied, the hull piping loads suitable for harsh environment and complex hull deformation conditions have been selected, the hull piping stress analysis load cases have been compiled, and the hull super-high penetration riser, non-metallic piping of ballast system, SCR riser and a series of complex piping stress analysis have been studied. The new type pipe support suitable for the hull structure is proposed, and the best recommended scenario is obtained.
