中国石油大学学报（自然科学版）2017，Vol.41Issue(1)：96-101,6.DOI:10.3969/j.issn.1673-5005.2017.01.012
油藏埋存CO2泄漏机制及故障树分析
Mechanisms and fault tree analysis of CO2 leakage during geological storage in oil reservoirs
摘要
Abstract
In this study,the leaking mechanisms and potential pathways of CO2 during geological storage in oil reservoirs were analyzed based on a fault tree analysis method,in combination with the field monitoring results of a CO2 enhanced oil recovery (EOR) and storage demonstration project.The analysis results show that the sealing failures of injector and oil production wells,including casing and wellhead facilities damage,and well cementing failure,are the main reasons for the leakage of CO2,which have been observed in the field monitoring.There has been no reported large-scale leakage of CO2occurring,but relatively high and abnormal CO2concentration in soil near some wellbores were measured,indicating that there was some leakage of CO2 through well casing string or incomplete cement ring occurring.The fault tree analysis results can provide guidelines for monitoring and preventing leakage of CO2 during geological storage.关键词
CO2地质埋存/故障树分析/CO2泄露/井泄漏/环境监测Key words
CO2 geological storage/fault tree analysis/CO2 leakage/well leakage/environmental monitoring分类
能源科技引用本文复制引用
任韶然,韩波,任建峰,张亮,李德祥,宫智武,王晓慧,陈国利,熊小琴..油藏埋存CO2泄漏机制及故障树分析[J].中国石油大学学报（自然科学版）,2017,41(1):96-101,6.基金项目
“十二五”国家油气重大专项(2011ZX05016-005) （2011ZX05016-005）
“十三五”国家油气重大专项(2016ZX05056004-003) （2016ZX05056004-003）
