A new drillpipe design virtually eliminates failures that result from slip damage

被引：3
|
作者：
Wilson, GE
机构：
来源：
SPE DRILLING & COMPLETION | 1997年 / 12卷 / 01期
关键词：
D O I：
10.2118/35036-PA
中图分类号：
TE [石油、天然气工业];
学科分类号：
0820 ;
摘要：
Drillstrings made before 1982 were not designed to meet the rigorous demands of today's drilling. Deeper wells and higher-angle holes are requiring higher pump pressure, and more tensile and torque capacity. Back-reaming, with the use of a power swivel, is agitating these conditions even further. Recent work has been done to improve the fatigue life of drillpipe by making drillpipe with longer internal-taper upsets and stress-relief grooves. Even through improvements have been made, slip damage still takes its toll on drillpipe. This paper addresses the failures caused by slip damage and offers a solution for solving this problem. Finite element work and fatigue testing has been done to prove the effectiveness of this new drillpipe design.
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页码：33 / 36
页数：4
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