防喷器下放过程中导向绳的动力学响应

防喷器在水下采油的过程中起着重要作用,而导向绳在防喷器下放的过程中起着重要的导向及限制作用。为研究导向绳的力学性能,参考某浮式钻井平台具体参数,结合某海域具体海况,通过对防喷器下放过程的必要简化,基于凝集质量法,将导向绳系统离散成凝集质量模型,运用大型水动力分析软件OrcaFlex建立防喷器下放过程中导向绳的动力学分析模型。运用时域耦合分析得到了导向绳的张力、防喷器的下降速度等的变化情况,计算结果对具体工程实践有一定的指导意义。

Dynamic Analysis of Guide Wires during the Lowering Process of BOP

The Blow Out Preventor(BOP) plays an important role in the process of underwater oil production and the guide wires play an important role in guiding and restraining the BOP. In order to study the mechanical properties of the guide wires of BOP, based on the specific parameters of a certain drilling vessel and the lumped mass method, the guide wires are discretized into lumped mass model. Reference to the specific sea condition and by necessary simplification of the lowering process of BOP, the dynamic model of guide wires has been established by the large hydrodynamic analysis software OrcaFlex. The effective tension of the guide wires and the lowering velocities of BOP are obtained by time - domain coupling analysis. The calculation results have certain guiding significance for actual engineering practice.