In recent years, the production of oil and gas has been developed in deep water depths which exceed 500m. Deep water developments are being followed strongly in different parts of the world (Caspian Sea, Gulf of Mexico, etc.). The movement of floater causes severe stress at the touchdown point (TDP) in steel catenary risers (SCR). The main objective of this study was to simulate the exact behav...

This paper investigates the integrated riser/vessel system which is subjected to random waves. Riser pipelines are the main components of the oil and gas offshore platforms. Whereas Iran country has been located on the fringes of Caspian Sea deep water, therefore study and research in this area is increasingly essential. The fluctuation of floating production causes the severe response and grea...

A steel catenary riser (SCR) attached to a floating platform at its upper end encounters fluctuations in and near its touchdown zone (TDZ), which causes the interaction with the seabed. Subsea surveys and the analysis of SCR’s indicated that the greatest stress and highest damage occurred near the touchdown point (TDP), where the SCR first touches the seabed. Nowadays, the linear seabed spring ...

Several factors can affect the response of steel catenary risers (SCR) around its touch down zone (TDZ). These include stiffness soil, soil suction force on riser TDZ, degradation with cyclic TDZ loading, etc. Riser strength and fatigue computation are usually performed considering flat seabed use rigid or linear (spring) interaction model. However, bathymetric information obtained for SCR lay ...

This study proposed a novel experimental platform to conduct dynamic loading tests of truncated model steel catenary riser (SCR) within the touchdown zone (TDZ). The facilities platform, including soil tank, system, and stirring were introduced in detail. parameters test determined through simulation an situ riser. A pipe was adopted as riser, with its outer diameter equaling that prototype SCR...