Effects of Surface Defects on Mechanical Properties of MP35N Well Testing Wire Line

Abstract

Abstract:

Key words:

摘要： 针对试井钢丝在长期使用过程中，整盘钢丝会出现各种不同表面缺陷影响试井钢丝力学性能这一现象，对存在直径变细、划痕、腐蚀坑、折弯四种类型不同规格的表面缺陷ＭＰ３５Ｎ试井钢丝开展了大量力学性能实验，通过实验发现，划痕深度小于２００μｍ力学性能影响可以忽略不计，等于或大于２００μｍ拉断力陡降。在实验中拉断力随钢丝直径变细、折弯角度及腐蚀坑深度增加而下降。拉伸断口表明，腐蚀和划痕缺陷拉伸断口呈脆性断裂特征，直径变细和折弯缺陷拉伸断口呈韧性断裂特征。

关键词: 试井钢丝, 表面缺陷, 力学性能, 断口形貌

CLC Number:

TAN Jian, LI Guo, ZHANG Huali, TANG Guanghua, WANG Ke, QIAN Shihong, WEN Shujiang. Effects of Surface Defects on Mechanical Properties of MP35N Well Testing Wire Line [J]. DPT, 2020, 43(增): 98-100.

谭健,李国,张华礼,唐光华,王柯,钱思虹,文蜀江. 表面缺陷对ＭＰ３５Ｎ试井钢丝力学性能的影响研究[J]. 钻采工艺, 2020, 43(增): 98-100.

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