自升式钻井平台桩腿桩靴牺牲阳极应用及研究  

Application and research of sacrificial anode of spud legs and spud cans of jackup drilling platform

作　　者：张飞 谢勇 赵云龙 王柏和 ZHANG Fei;XIE Yong;ZHAO Yunlong;WANG Baihe(Drilling Division of China Petroleum Offshore Engineering Co.,Ltd.,Tianjin 300450,China;China Merchants Heavy Industry(Jiangsu)Co.,Ltd.,Nantong 226000,China)

机构地区：[1]中国石油集团海洋工程有限公司钻井分公司,天津300450 [2]招商局重工(江苏)有限公司,江苏南通226000

出　　处：《石油工程建设》2024年第4期68-70,共3页Petroleum Engineering Construction

摘　　要：为预防自升式钻井平台海水电化学腐蚀带来的金属结构伤害,在钻井平台生命周期有效保护桩腿和桩靴,需要选择合理的牺牲阳极类型及数量。从牺牲阳极的更换时间、阴极保护的确定、牺牲阳极的选择及牺牲阳极数量的计算四个方面进行了介绍,结合海上移动式平台检验规则,对不同位置的保护对象分别进行了计算。研究表明,结合坞检时间,通过计算设计可以选择出不同保护对象对应的标准牺牲阳极类型及数量。To protect the metal structure of the jack-up drilling platform from being damaged by seawater electrochemical corrosion,the spud legs and spud cans of the platform should be effectively protected during its life cycle by reasonably determining the type and quantity of their sacrificial anode.This paper primarily consists of four parts:the calculation of the replacement time for the sacrificial anode,the determination of the cathodic protection,the selection of the sacrificial anode,and the calculation of its quantity.Protected objects in different positions are calculated separately,with inspection rules for the offshore mobile platform taken into consideration.The study shows that the standard sacrificial anode type and its standard quantity for different protected objects can be determined through computational calculation,in view of the time for docking survey.

关 键 词：自升式钻井平台 电化学腐蚀 桩腿 桩靴 牺牲阳极 阴极保护 

分 类 号：TE985[石油与天然气工程—石油机械设备]