自升式钻井平台自存工况抗倾覆稳性分析  

Analysis of Stability Against Overturning for Jack-up Rig in Survival Condition

作　　者：杨光[1] 刘瑞华[1] 陈东昌[1] 杨小龙[1] 

机构地区：[1]海洋石油工程股份有限公司,天津300451

出　　处：《中国造船》2009年第A11期199-204,共6页Shipbuilding of China

摘　　要：对自升式钻井平台自存工况下的抗倾覆稳性进行了分析。介绍了自升式平台抗倾覆稳性基本原理和计算方法，并对一座250英尺自升式钻井平台自存工况进行了抗倾覆稳性计算。运用NAPA分析软件建立平台风力矩模型，以及建立SACS模型计算平台波浪流载荷，并根据P—Delta效应计算出平台的附加力矩。最后计算出该自升式钻井平台在自存工况的抗倾覆安全系数，并以此为基础进一步讨论平台重心的调整范围。Analysis of stability against overtuming for Jack-up rig in survival condition has been performed in this paper. The theory of stability against overturning is introduced and the stability against overturning for a rig, which can work in the depth of 250 feet, in survival condition is calculated. Wind moment model is set up with NAPA software, while SACS structural model is used to analyze wave load and current load. The moment caused by P-Delta effects is taken into account additionally. Then the factors of anti-overturning are estimated. Based on above calculation. Further the variation of gravity center of the platform and its effect on overturning is discussed.

关 键 词：自升式钻井平台 抗倾覆稳性 自存工况 P—Delta效应 

分 类 号：TE951[石油与天然气工程—石油机械设备] TU476.4[建筑科学—结构工程]