石油钻机无故障数据可靠性评定——单侧置信下限法

The confident interval estimated method on the reliability evaluation of zero failure data in drilling rig

文章针对石油工程装备可靠性评定中亟待解决的无故障数据,引入了威布尔单侧置信下限法,对最关键的形状参数进行分析和计算,并求得了不同时间状态下符合实际的可靠度。弥补了石油行业在无故障数据可靠性评定方面的不足。

To get the zero failure date which are urgently needed to be processed in the reliability evaluation for oil equipment,the most important shape parameter is calculated by Weibull confident interval estimated method,that is the zero failure data are taken as the continuity point of failure adta,and the lower limit of confident interval is constructed by using classical approach.The confident estimation to the headframe and bed plate of drilling rig is done by this method,the computational solution is identical with that in practise.This shows the method in this paper is efficient. This work is helpful in improving the accuracy of confident estimation in oil field.