Analysis And Design Of Deepwater Steel Catenary Riser

In recent years, the exploration and production activity of offshore oil and gas industry in deepwater is numerous. Global offshore industry is building systems today for production in even deeper water, progressively using new technologies, and significantly extending existing technologies. This is the general trend in the offshore oil and gas industry. It is also true for China offshore industry. Recent exploration activities indicate the discovery of hydrocarbon resources in the South China Sea at the water depth of 500m approximately. There are 12 blocks with water depth varying from 500m to 2500m in South China Sea to open for joint exploration and production.Regardless of the floater concept adopted for offshore field development, there is always a need of risers, which form the critical parts of offshore infrastructure. Risers are some of the more complex aspects of deepwater developments. Steel Catenary Riser (SCR) is considered a cost effective solution to deepwater oil and gas production, and is used widely. It is envisaged that SCR will continue to be the most economic solution as water depth increases further, even up to and beyond 10,000 feet.The assignment of this thesis is to carry out the configuration design and analysis work of a SCR, including the riser pipe wall-thickness sizing design and verification, the analysis of riser strength, the analysis of motion fatigue and VIV fatigue.1. Design and verification of pipe wall-thickness was carried out based on API RP 2RD;2. Static and dynamic strength analysis of the riser was finished using the EXCEL computation program and large-scale finite element method analysis software ABAQUS separately;3. Dynamic response of riser was achieved using ABAQUS software firstly, and then stress-time course curve was disposed to calculate and obtain the motion fatigue life using the rain-flow method;4. VIV fatigue life was calculated using the software SHEAR7.Through the work of computation and analysis above, it wasconcluded that the design proposal of the SCR is reliable...