辽宁工程技术大学学报（自然科学版）Issue(8)：1050-1054,5.DOI:10.3969/j.issn.1008-0562.2013.08.008
二氧化碳地质埋存中固井结构损伤因素
Cementing structural damage factors in geological storage of CO2
摘要
Abstract
Focusing on the process of carbon dioxide being injected into the stratum, this paper summarized the mechanical impact factors of leakage pathways formed by damage of cementing structural integrity with the increasing of flow pressure. The three-dimensional model of casing - cement - strata and good cementation of each interface are established by using the FLAC and FLAC3D numerical simulation. The analysis method of cement annulus shear or tensile failure with the casing inner pressure of hole bottom increasing is proposed, meanwhile, the relationship between the inner pressure of hole bottom and the cement annulus safety factor is obtained; also, it can be concluded that the analysis method of interface sustained cracking due to fluid invades, so that establish the corresponding axisymmetric model, finally,it exhibits interface unit number and changing safety factor of internal pressure of the bottom hole.关键词
二氧化碳地质埋存/套管/水泥环/渗漏/结构完整性/压力/界面/裂缝Key words
CO2 geological storage/well casing/cement annulus/leakage/integrity of structure/pressure/interface/crack分类
能源科技引用本文复制引用
谭雨,李宏,宋力..二氧化碳地质埋存中固井结构损伤因素[J].辽宁工程技术大学学报（自然科学版）,2013,(8):1050-1054,5.基金项目
中央高校基本科研业务费专项资金资助项目（DUT10RC(3)79；DUT12ZD102）；国家重点基础研究发展计划基金资助项目（2011CB013503）；国家自然科学基金资助项目（51079017）；教育部新世纪优秀人才支持计划基金资助项目 （3）
