深水隔水管与钻柱耦合作用力学模型

A Coupled Mechanical Model of Deep Water Riser and the Drill String

建立了深水隔水管与内部钻柱耦合作用下的横向振动力学分析模型,该模型耦合了钻柱与隔水管间相互作用的侧向接触力及摩擦力,可以更加准确地描述海洋隔水管的受力与变形状态,为海洋隔水管安全使用,以及隔水管设计制造提供了理论分析方法。

With the rising of high international oil price,the increasing exhaustion of onshore resources and declination of oil and gas production in shallow sea,deep water area has become an important alternating area of worldwide oil and gas.Past theoretical researches were mainly focused on riser dynamic response with the effect of marine environmental loadings and marine platform movement,but for the influential factors of operating strings inside the riser were less studied.The coupling mechanic analysis model between deep water riser and internal drill string under transverse vibration is established,which couples the interaction between drill string and riser of lateral contact force and friction force.The established transverse vibration model can more accurately describe the state of stress and deformation of the marine riser,it provides theoretical analysis method for safe application of marine risers,its design and manufacturing.