洋流对海底钻机着底偏移影响分析

Analysis of the Influence of Ocean Currents on the Offset of Seafloor Drilling Rig

本文以深海海底钻机为研究对象,建立深海海底钻机着底偏移运动的力学模型,利用龙格-库塔法对模型进行数值求解,研究不同的洋流方向与洋流流速对海底钻机着底偏移的影响。基于水动力软件OrcaFlex,对不同洋流方向与流速的情况进行仿真分析,并将理论结果与软件仿真结果进行对比分析。研究结果表明:受洋流方向与流速的影响,对于海底钻机的着底偏移影响比较大,随着洋流方向角增大,其偏移量也在逐渐减小;同时洋流的流速越大,其偏移量越大。同时还经过结果对比验证了力学模型的可靠性。本文给出的结论便于海上作业人员进行深海开采作业。

Taking the seafloor drilling rig as the research object,the mechanical model of the bottoming migration movement of the seafloor drilling rig was established.The Runge-Kutta method was used to numerically solve the model to study the influence of different ocean current directions and ocean current velocities on the bottoming offset of the seafloor drilling rig.Based on the hydrodynamic software OrcaFlex,a simulation analysis was conducted under the condition of different ocean current directions and velocities,and the theoretical results are compared with the software simulation results.The comprehensive research results show that ocean current direction and velocity have a great impact on the bottoming offset of the seafloor drilling rig.The offset gradually decreases as the direction angle of ocean current increases.At the same time,as the ocean current velocity,the offset increases.The reliability of themechanical model was verified by the comparison of the results.The conclusions given in this paper are helpful for offshore operators to conduct deep-sea mining operations.