Deepwater Steel Catenary Riser (DSCR) is the key structure of oil and gas production system in ocean. To design an optimized DSCR system, dynamic characteristics are analyzed by setting some different boundary condi-tions internal fluid types. The main vibration mode found orthogonal to both mass stiffness according normalization condition mode, then regular function jth order principal Kpj obt...

The development of seabed trench by the steel catenary riser (SCR) touch-down zone (TDZ) in its early life can be caused installation loads, direct hydrodynamic and vessel first second-order motions on SCR. This paper presents a numerical technique which pre-trench initiated for fatigue response calculations during SCR detailed design analysis. Examples are presented to demonstrate new approach...

The expansion of a deepwater brownfield may become necessary to increase the production hydrocarbons. Such often requires installation additional risers existing floating platform. However, seabed footprint facilities be congested with subsea pipelines and structures. Tying back such as steel catenary riser (SCR) platform becomes challenging. Floating (FCR) is novel solution bends or ‘waves’ cl...

This paper (SPE 173892) was revised for publication from paper OTC 25335, first presented at the Offshore Technology Conference, Houston, 5–8 May 2014. Original manuscript received for review 20 June 2014. Revised manuscript received for review 27 October 2014. Paper peer approved 4 November 2014. Summary Steel catenary risers (SCRs) on a large-heave-motion vessel are susceptible to compression...

This paper presents a full-scale deep-water steel catenary riser fatigue test system. The proposed system can carry out tests on risers, hoses, and subsea pipelines up to 21 m in length, ranging from 8 24 inches diameter. was realized by mechanical loading with control systems, could axial tension compression, bending moment, torsion, internal pressure simulate all load types risers or pipeline...

A periodic pigging operation performed to clean off sediment and provide operators with detailed health information for a pipeline is mandatorily required. The research on pigging-induced issues the steel catenary riser (SCR), one of key parts in offshore hydrocarbon recovery pipelines between floating production system seabed, has been scarce until now. As result, there an urgent need theories...