内波参数对半潜式钻井平台漂移量的影响  

Effect of internal wave parametres on drifting quantity of semi-submersible drilling platform

作　　者：张浩[1] 陈国明[1] 郑纯亮[1] 寇贝贝 

机构地区：[1]中国石油大学(华东),山东青岛266580 [2]中海石油(中国)有限公司深圳分公司,广东深圳518067

出　　处：《石油钻采工艺》2015年第1期39-42,共4页Oil Drilling & Production Technology

基　　金：中海石油深海开发有限公司项目"深水半潜式平台锚泊系统安全评估与作业管理研究"

摘　　要：基于KdV理论和莫里森方程,对内波作用力进行理论计算。获得平台在内波作用下的运动时程曲线,发现在内波作用下,平台产生沿内波入射方向的最大漂移量和反向漂移,并在内波过境后不断振荡最终回到平衡位置。针对内波上层流体厚度、最大流速、入射角度和水深等4个因素对平台漂移量的影响进行规律性研究,发现上层流体厚度与水深的变化对平台的漂移量影响不大,最大流速应作为首要监测因素,内波入射角可在最大流速确定的基础上适当调整监测范围。监测到强内波流后,应停止平台作业,断开作业管柱,适当放松迎流向锚链。Based on KdV theory and Morison equation, the theoretical calculation is done for the acting force of internal wave. The motion time travel curve of platform under the action of internal wave is ifgured out. It is discovered that, under the action of internal wave, the platform has the maximum drifting quantity and reverse drifting in the incidence direction of internal wave, and constantly vibrates and ifnally returns to the balanced position after the internal wave passes. According to effects of 4 factors, namely, upper lfuid thickness of internal wave, maximum lfow rate, angle of incidence and water depth on the platform drifting quantity, the research on law is conducted, and it is discovered that the changes of upper lfuid thickness and water depth do not leave great effects on the platform drifting quantity, the maximum lfow rate should be regarded as the primary monitoring factor, and the monitoring scope of angle of in-cidence of internal wave may be properly adjusted on the basis of determined maximum lfow rate. After the strong internal wave current is monitored, the platform operation should be stopped, the operation pipe column should be disconnected, and the anchor chain towards the current direction should be properly loosened.

关 键 词：内波 运动方程 深水 半潜式钻井平台 漂移量 

分 类 号：U611.1[交通运输工程—船舶及航道工程]