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	Microstructure formation and degradation mechanism of cementitions plugging agent slurries
	Yan Peiyu ; Zhou Yongxiang ; Yang Zhenjie ; Jian, Qin
	2010-05-10 ; 2010-05-10
关键词	oil well cement YLD plugging agent microstructure degradation leaching Materials Science, Multidisciplinary
中文摘要	The hydration products and microstructure of class G oil well cement and a newly developed plugging agent (YLD) slurries cured in the simulated temperature and pressure environment, which was of similar temperature and pressure with those at the bottom of oil well in a normal depth, were investigated using XRD, TG and SEM. Severe leakage is confirmed at the interface between hardened slurries and steel tube during the dynamically curing process, which induces the quick loss of cementing property of slurries. This should be the dominating cause of degradation of class G oil well cement slurry. A secondary hydration process can take place at the eroded interface of hardened YLD plugging agent slurry. Newly formed C-S-H gel has a self-healing effect to repair the damaged interface, which unceasingly maintains the cementing property of the YLD plugging agent slurry. Therefore, the effective using period of YLD plugging agent can be prolonged.
语种	英语 ; 英语
出版者	JOURNAL WUHAN UNIV TECHNOLOGY ; WUHAN ; WUHAN UNIV TECHNOLOGY, WUHAN 430070, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/23277]
专题	清华大学
推荐引用方式 GB/T 7714	Yan Peiyu,Zhou Yongxiang,Yang Zhenjie,et al. Microstructure formation and degradation mechanism of cementitions plugging agent slurries[J],2010, 2010.
APA	Yan Peiyu,Zhou Yongxiang,Yang Zhenjie,&Jian, Qin.(2010).Microstructure formation and degradation mechanism of cementitions plugging agent slurries..
MLA	Yan Peiyu,et al."Microstructure formation and degradation mechanism of cementitions plugging agent slurries".(2010).

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