钻铤螺纹联接载荷分布规律与疲劳失效

Mechanism and Prevention of Fatigue Failure for Drilling Collar Thread Linking

楼一珊1 朱 亮1 李忠慧1

( 1 长江大学石油工程学院, 湖北荆州434023; 2 中国石油管道公司中原分公司, 山东德州253000)

Y angtze University, J ingzhou
434023, China

The fa tigue failure o f drilling co llar thread link ing is a
m a in facto r o f the drill colla r fa ilure, w hich accounts fo r a
larg e proportion o f the acc idents in the dr illing too l fa ilure.
The fa tigue is the m ain reason leading to the thread link ing
fa ilure. This article uses The F inite E lem ent so ftw are to
analyze the mechan ism s o f do llars thread fa tigue fa ilure and
puts forwa rd the preventing measures acco rding to the load
d istr ibu tion o f the drilling co llar thread linking.