| The hybrid riser is connected with the FPSO to transport oil and gas, which is the mainstream deep-sea oil and gas production method,the hose is the weak components of oil transportation, the consequences of the damage are very serious. The hybrid riser is composed of a free standing riser and a jumper hose. In this paper, considering the hydrodynamic force of the hybrid riser and the FPSO motion, the hydrodynamic model of the coupling of the hose, pontoon, riser and FPSO is established for the hybrid riser with a water depth of 2 100 meters. Based on the survival sea condition, the motion response and dynamic internal force response of the hybrid riser including the jumper hose and the steel riser are calculated and analyzed, and the influence of FPSO motion on the dynamic response of the hose is studied. The time history of the hose motion, the extreme value of the motion, and the time history of the tension are calculated. The results show that the FPSO motion increases the motion response and tension of the hose, and leads to the increase of the internal force of the hose, and has a non-negligible effect on the tension at the top of the hose and the midpoint motion. In addition, under high sea conditions, the FPSO motion has a more significant effect on the dynamic response of the hose. The research work and conclusion are of great significance for the reasonable design of oil hoses to ensure oil safety. |
