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岩屑核磁共振录井的适用性探讨
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作者 刘达贵 冯雪 +3 位作者 童川 杨紫彦 杨琳 陈雷 《录井工程》 2024年第2期22-27,共6页
为了使核磁共振录井技术在油气田勘探开发中发挥更大的作用,以四川盆地致密砂岩为研究对象,探讨岩屑核磁共振录井的适用性。分析了相同层段、不同颗粒直径的岩屑核磁共振孔隙度和渗透率,建立了岩屑核磁共振孔隙度与岩心实验室测定孔隙... 为了使核磁共振录井技术在油气田勘探开发中发挥更大的作用,以四川盆地致密砂岩为研究对象,探讨岩屑核磁共振录井的适用性。分析了相同层段、不同颗粒直径的岩屑核磁共振孔隙度和渗透率,建立了岩屑核磁共振孔隙度与岩心实验室测定孔隙度、岩屑核磁共振渗透率与岩心实验室测定渗透率的数学模型。研究结果表明:同一柱塞岩心样品,核磁共振孔隙度与岩心实验室测定孔隙度、核磁共振渗透率与岩心实验室测定渗透率相关系数r值分别为0.99、0.86;相同层段、不同颗粒直径的岩屑,核磁共振孔隙度与岩心实验室测定孔隙度、核磁共振渗透率与岩心实验室测定渗透率对比,随着岩屑颗粒直径变小,相关系数r值均减小,相关性变差;岩屑颗粒直径不小于3 mm时,核磁共振孔隙度与岩心实验室测定孔隙度相关系数r值均不小于0.90,核磁共振渗透率与岩心实验室测定渗透率相关系数r值均不小于0.73。这表明录井现场PDC钻头岩屑颗粒直径也能够满足核磁共振录井技术的应用。 展开更多
关键词 岩屑核磁共振录井 岩心实验数据 孔隙度 渗透率 相关性
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Application of nuclear magnetic resonance technology to carbon capture,utilization and storage:A review 被引量:10
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作者 Liang Xu Qi Li +2 位作者 Matthew Myers Quan Chen Xiaochun Li 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2019年第4期892-908,共17页
Carbon capture,utilization and storage (CCUS) is considered as a very important technology for mitigating global climate change.Carbon dioxide (CO2) injected into an underground reservoir will induce changes in its ph... Carbon capture,utilization and storage (CCUS) is considered as a very important technology for mitigating global climate change.Carbon dioxide (CO2) injected into an underground reservoir will induce changes in its physical properties and the migration of CO2 will be affected by many factors.Accurately understanding these changes and migration characteristics of CO2 is crucial for selecting a CCUS project site,estimating storage capacity and ensuring storage security.In this paper,the basic principles of nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) technologies are briefly introduced in the context of laboratory experiments related to CCUS.The types of NMR apparatus,experimental samples and testing approaches applied worldwide are discussed and analyzed.Then two typical NMR core analysis systems used in CCUS field and a self-developed high-pressure,low-field NMR rock core flooding experimental system are compared.Finally,a summary of the current deficiencies related to NMR applied to CCUS field is given and future research plans are proposed. 展开更多
关键词 GEOLOGIC carbon STORAGE Nuclear magnetic RESONANCE (nmr) core FLOODING experimental apparatus Low-field nmr HIGH-FIELD nmr
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