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首页> 外文期刊>Ocean Engineering >Dynamic simulation of the wireline riser tensioner system for a mobile offshore drilling unit based on multibody system dynamics
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Dynamic simulation of the wireline riser tensioner system for a mobile offshore drilling unit based on multibody system dynamics

机译：基于多体系统动力学的海上移动式钻井平台电缆冒口张紧系统的动态仿真。

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In this study, a wireline riser tensioner (WRT) system was dynamically simulated to analyze the dynamic response of the riser string in a mobile offshore drilling unit (MODU) such as a drilling rig or a drillship. The main function of the WRT system is to sustain the tension to avoid buckling, regardless of the MODU motion. The WRT system consists of a tensioner ring, a wireline, pneumatic cylinders, and air pressure vessels (APVs). It reduces the vertical (heave) motion of the top of the riser string caused by the MODU motion. In this study, the equations of motion of the drilling rig and the WRT system were formulated based on multibody system dynamics. The discrete Euler-Lagrange equation was used to formulate the equations of motion. For the external forces, both the hydrostatic and hydrodynamic forces were considered. Several simulations were performed with various sea states to analyze the motion of the riser string and the efficiency of the WRT system. Furthermore, the gas volume inside the APVs was changed to investigate its impact on the efficiency and performance of the WRT system. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在这项研究中，对缆线立管张紧器（WRT）系统进行了动态仿真，以分析移动式海上钻井平台（MODU）（例如钻机或钻探船）中立管柱的动力响应。 WRT系统的主要功能是维持张力以避免屈曲，而与MODU运动无关。 WRT系统由张紧器环，钢丝绳，气压缸和气压容器（APV）组成。它减少了由MODU运动引起的立管柱顶部的垂直（升沉）运动。在这项研究中，钻机和WRT系统的运动方程是根据多体系统动力学公式制定的。离散的Euler-Lagrange方程用于公式化运动方程。对于外力，既考虑了静水力又考虑了流体动力。在各种海况下进行了一些模拟，以分析立管柱的运动和WRT系统的效率。此外，更改了APV内部的气体量，以研究其对WRT系统效率和性能的影响。 （C）2015 Elsevier Ltd.保留所有权利。

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