Analysis of coupling characteristics of the offloading buoy system in west Africa seas

作者：He, Ning; Zhang, Cheng; Kang, Zhuang

来源：28th International Ocean and Polar Engineering Conference, ISOPE 2018, Japan, 2018-06-10 to 2018-06-15.

• Buoy system
• Catenary anchor leg mooring buoys
• Coupling characteristic
• Hydrodynamic model
• Internal relationships
• Model tests
• Offshore oil and gas fields
• West Africa

The deepwater offloading system mainly composed of oil offloading line (OOL), mooring system and a catenary anchor leg mooring (CALM) buoy is widely used in the offshore oil and gas field development in West Africa and other sea areas. The coupling dynamics of the system must be taken into account in the motion investigation of the CALM buoy. In this paper, the internal relationship between the motion of the CALM buoy and the wave load in West Africa seas is analyzed, and the coupling characteristics between the buoy and the mooring system and OOL are studied. Based on the radiation/diffraction theory, the numerical model for coupled analysis of the offloading buoy system including the hydrodynamic models of the buoy and the OOL as well as the mooring system is established. On this basis, the coupling model test of offloading buoy system is conducted to check the numerical model. By combining the model test and numerical simulation, the motion response and dynamics of the whole system in the combined condition of swell and wind wave of West Africa seas are discussed, which can provide a reference for the design of deepwater offloading buoy system and give the technical support for deepwater oil and gas development projects, especially in West Africa seas.

• 出版日期2018
• 单位哈尔滨工程大学