Creep microindentation of low-density oil well cement and the implication on radial cracking risk of cement sheath

doi:10.1016/j.petrol.2022.111155

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Creep microindentation of low-density oil well cement and the implication on radial cracking risk of cement sheath
	Chen Z(陈召); Sorelli, Luca; Benard, Philippe
刊名	JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
	2023
卷号	220 页码:12
关键词	Low slurry density Oil well cement Microindentation Basic creep Radial cracking
ISSN号	0920-4105
DOI	10.1016/j.petrol.2022.111155
通讯作者	Chen, Zhao(zhao.chen.2@ulaval.ca)
英文摘要	To better provide zonal isolation for the production of oil and gas, low-density oil well cement (LD-OWC) filling a deep oil well was developed to reduce the high hydrostatic pressure caused by the cement slurry. The key mechanical properties of LD-OWC and related cracking susceptibility, nevertheless, have not been fully under-stood. This work was to characterize the elastic and creep properties of LD-OWC using microindentation and assess the radial cracking risk of the cement sheath. With two types of LD-OWC cured at different temperatures, our measurement through mercury intrusion porosimetry (MIP) showed that their porosities depended on the slurry densities level, and the basic creep exhibited a logarithmic increase in the long term. Mechanical prop-erties such as Young's modulus (E), indentation hardness (H), and creep modulus (C) of LD-OWC were statis-tically characterized, in particular, E and C were in line with those obtained by macroscopic tests. Moreover, a viscoelastic sheath model was developed to evaluate the stress redistribution in the steel casing, the cement sheath, and the formation in the long term. We found that lower slurry densities of OWC reduced the risk of radial cracking. Taking advantage of parametric analysis, the power-function correlation between the safety factor of radial cracking and the mechanical and geometrical sheath properties was also demonstrated.
分类号	一类
资助项目	Natural Sciences and Engineering Research Council of Canada[CRDPJ 485320-15]
WOS关键词	C-S-H ; LONG-TERM CREEP ; ELASTIC-MODULUS ; COLLOID MODEL ; INDENTATION ; PASTE ; INTEGRITY ; CONCRETE ; REFINEMENTS ; PERFORMANCE
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
WOS记录号	WOS:000891780500003
资助机构	Natural Sciences and Engineering Research Council of Canada
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/91099]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
推荐引用方式 GB/T 7714	Chen Z,Sorelli, Luca,Benard, Philippe. Creep microindentation of low-density oil well cement and the implication on radial cracking risk of cement sheath[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2023,220:12.
APA	陈召,Sorelli, Luca,&Benard, Philippe.(2023).Creep microindentation of low-density oil well cement and the implication on radial cracking risk of cement sheath.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,220,12.
MLA	陈召,et al."Creep microindentation of low-density oil well cement and the implication on radial cracking risk of cement sheath".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 220(2023):12.