理化检验：物理分册2012，Vol.48Issue(5)：337-341,5.
RTTS封隔器中心管外螺纹接头断裂分析
Fracture Analysis on Pin Thread Joint of Central Tube of RTTS Packer
刘箐霖 1李玉民 2张金源1
作者信息
- 1. 中国石油大学,北京102249
- 2. 中原油田钻井管具工程处,濮阳457331
- 折叠
摘要
Abstract
The fracture reasons for the pin thread ioint of central tube of RTTS packer were analyzed through macroscopic examination, chemical composition analysis, mechanical property testing, metallographic examination, fracture analysis and finite element calculation. The results showed that failure form was overload breakage in the root of the first complete buckle of pin thread. It becaused the stress value in the root of pin thread had already at or near the material yield strength when the high-pressure perforating operation had on （and at the moment of low pressure after the explosion of the bullet gun）, which resultedin plastic yield damage.关键词
封隔器/中心管/射孔/过载断裂/应力集中Key words
packer/central tube/perforation/overload breakage/stress concentration分类
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刘箐霖,李玉民,张金源..RTTS封隔器中心管外螺纹接头断裂分析[J].理化检验：物理分册,2012,48(5):337-341,5.
