碳封存区块内弃置井泄露机制及控制方法模拟
TE254; 弃置井筒作为CO2 地质封存中的主要泄露途径,其密封完整性直接关乎封存效果.为此,针对弃置井筒泄露问题,基于耦合孔隙压力的Cohesive单元法,建立了三维水泥塞-地层有限元模型,模拟了CO2 沿弃置井筒运移过程,分析了水泥浆体系、胶结质量对泄露风险的影响.模拟结果表明:CO2 聚积会诱发水泥塞-地层界面微环隙,形成泄露通道,且微环隙倾向于轴向发育;选择高模量、高泊松比、微膨胀性水泥密封井筒时,井筒泄露风险低;微环隙对胶结质量极为敏感,密封井筒时应重点控制胶结质量.研究结果对指导碳封存区块内井筒弃置具有重要意义....
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Published in | 钻井液与完井液 Vol. 40; no. 3; pp. 384 - 390 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | Chinese |
Published |
中国石油大学(北京)石油工程学院,北京102249%中国石油大学(北京)克拉玛依校区石油学院,新疆克拉玛依834000%中国石油新疆油田公司,新疆克拉玛依834000
01.05.2023
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Subjects | |
Online Access | Get full text |
ISSN | 1001-5620 |
DOI | 10.12358/j.issn.1001-5620.2023.03.015 |
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Abstract | TE254; 弃置井筒作为CO2 地质封存中的主要泄露途径,其密封完整性直接关乎封存效果.为此,针对弃置井筒泄露问题,基于耦合孔隙压力的Cohesive单元法,建立了三维水泥塞-地层有限元模型,模拟了CO2 沿弃置井筒运移过程,分析了水泥浆体系、胶结质量对泄露风险的影响.模拟结果表明:CO2 聚积会诱发水泥塞-地层界面微环隙,形成泄露通道,且微环隙倾向于轴向发育;选择高模量、高泊松比、微膨胀性水泥密封井筒时,井筒泄露风险低;微环隙对胶结质量极为敏感,密封井筒时应重点控制胶结质量.研究结果对指导碳封存区块内井筒弃置具有重要意义. |
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AbstractList | TE254; 弃置井筒作为CO2 地质封存中的主要泄露途径,其密封完整性直接关乎封存效果.为此,针对弃置井筒泄露问题,基于耦合孔隙压力的Cohesive单元法,建立了三维水泥塞-地层有限元模型,模拟了CO2 沿弃置井筒运移过程,分析了水泥浆体系、胶结质量对泄露风险的影响.模拟结果表明:CO2 聚积会诱发水泥塞-地层界面微环隙,形成泄露通道,且微环隙倾向于轴向发育;选择高模量、高泊松比、微膨胀性水泥密封井筒时,井筒泄露风险低;微环隙对胶结质量极为敏感,密封井筒时应重点控制胶结质量.研究结果对指导碳封存区块内井筒弃置具有重要意义. |
Author | 李军 连威 王典 路宗羽 刘献博 刘鹏林 |
AuthorAffiliation | 中国石油大学(北京)石油工程学院,北京102249%中国石油大学(北京)克拉玛依校区石油学院,新疆克拉玛依834000%中国石油新疆油田公司,新疆克拉玛依834000 |
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Author_FL | WANG Dian LU Zongyu LIAN Wei LI Jun LIU Penglin LIU Xianbo |
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DocumentTitle_FL | Simulation Study of Sealing Integrity in Abandoned Wells Within CO2 Sequestration Block |
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Keywords | CCUS 井筒完整性 Abandoned wells Wellbore integrity Numerical simulation 数值模拟 微环隙 弃置井 Micro-annulus |
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PublicationTitle | 钻井液与完井液 |
PublicationTitle_FL | Drilling Fluid & Completion Fluid |
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Publisher | 中国石油大学(北京)石油工程学院,北京102249%中国石油大学(北京)克拉玛依校区石油学院,新疆克拉玛依834000%中国石油新疆油田公司,新疆克拉玛依834000 |
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Snippet | TE254; 弃置井筒作为CO2 地质封存中的主要泄露途径,其密封完整性直接关乎封存效果.为此,针对弃置井筒泄露问题,基于耦合孔隙压力的Cohesive单元法,建立了三维水泥塞-地层有限元模型,模拟了CO2 沿弃置井筒运移过程,分析了水泥浆体系、胶结质量对泄露风险的影响.模拟结果表明:CO2... |
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StartPage | 384 |
Title | 碳封存区块内弃置井泄露机制及控制方法模拟 |
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