Failure mechanism of sucker rod coupling

IMR OpenIR

	Failure mechanism of sucker rod coupling
	D. L. Duan; Z. Geng; S. L. Jiang; S. Li
	2014
发表期刊	Engineering Failure Analysis
ISSN	1350-6307
卷号	36 页码:166-172
摘要	Failure of sucker rod coupling or tubing is a major problem in sucker rod pumping systems, which occurs constantly in oil fields around the world. Such failures can lead to heavy maintenance work and higher expenses in oil production. To date, no economical method has yet been proposed to address the problem. In this paper, three samples with different service times are selected from California oil fields and are analyzed in details. A comparison of the dimensions and macro-morphologies of the samples with different service times is used to reveal the failure process. Failure mechanism is discussed based on the analysis of the micro-morphologies, microhardness, microstructures, and chemical composition of the samples. The analytical results indicate that the damage is initially caused by abrasion between the coupling and the tubing; the contact load decreases as the coupling diameter decreases, and the synergistic action between wear and corrosion becomes the main damage cause. Large numbers of defects (pores) in the material can accelerate both corrosion and wear aspects of the damage. Alternating stress may affect the mechanical properties of the coupling, but it is not the main factor of failure. (C) 2013 Elsevier Ltd. All rights reserved.
部门归属	[duan, d. l. ; geng, z. ; jiang, s. l. ; li, s.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; jiang, sl (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; sijiang@imr.ac.cn
关键词	Sucker Rod Coupling Failure Corrosion Wear Corrosion Synergism Co2 Corrosion Sliding Wear Erosion Steel Wells System
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72542
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. L. Duan,Z. Geng,S. L. Jiang,et al. Failure mechanism of sucker rod coupling[J]. Engineering Failure Analysis,2014,36:166-172.
APA	D. L. Duan,Z. Geng,S. L. Jiang,&S. Li.(2014).Failure mechanism of sucker rod coupling.Engineering Failure Analysis,36,166-172.
MLA	D. L. Duan,et al."Failure mechanism of sucker rod coupling".Engineering Failure Analysis 36(2014):166-172.