基于NMR和SEM技术研究陆相页岩孔隙结构与分形维数特征——以松辽盆地长岭断陷沙河子组页岩为例

P618.13; 为了表征陆相页岩的孔隙结构和分形特征,选取松辽盆地长岭断陷沙河子组陆相页岩作为研究对象,通过X射线衍射(XRD)分析、扫描电镜(SEM)图像分析、核磁共振(NMR)实验,运用分形维数理论,讨论NMR分形维数与矿物组成、地球化学参数、物性参数之间的相互关系,并且通过SEM图像提取技术定量化研究页岩储层孔隙特征.结果表明:沙河子组陆相页岩具有多种孔隙类型、孔径分布复杂、非均质性较强的特点.基于弛豫时间截止值,可将NMR 分形维数划分为束缚流体孔隙分形维数(0.060 9~1.420 4)和可动流体孔隙分形维数(2.964 0~2.986 9).矿物组成与分形维数的关系显示石英含量...

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Published in地球科学与环境学报 Vol. 42; no. 3; pp. 313 - 328
Main Authors 梁志凯, 李卓, 姜振学, 高凤琳, 张瀛涵, 肖磊, 杨有东, 侯煜菲, 王立伟
Format Journal Article
LanguageChinese
Published 中国石油大学(北京)非常规油气科学技术研究院,北京 102249 01.05.2020
中国石油大学(北京)油气资源与探测国家重点实验室,北京 102249
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ISSN1672-6561
DOI10.19814/j.jese.2019.10003

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Abstract P618.13; 为了表征陆相页岩的孔隙结构和分形特征,选取松辽盆地长岭断陷沙河子组陆相页岩作为研究对象,通过X射线衍射(XRD)分析、扫描电镜(SEM)图像分析、核磁共振(NMR)实验,运用分形维数理论,讨论NMR分形维数与矿物组成、地球化学参数、物性参数之间的相互关系,并且通过SEM图像提取技术定量化研究页岩储层孔隙特征.结果表明:沙河子组陆相页岩具有多种孔隙类型、孔径分布复杂、非均质性较强的特点.基于弛豫时间截止值,可将NMR 分形维数划分为束缚流体孔隙分形维数(0.060 9~1.420 4)和可动流体孔隙分形维数(2.964 0~2.986 9).矿物组成与分形维数的关系显示石英含量与束缚流体孔隙分形维数成负相关关系,黏土矿物含量与束缚流体孔隙分形维数成正相关关系;NMR分形维数与有机质含量呈线性相关,与成熟度不存在明显相关性;这说明矿物组成和有机质含量对NMR 分形维数起明显的控制作用.储层物性方面,NMR分形维数与孔隙率成线性负相关关系,而与渗透率成正相关关系,说明NMR分形维数能够作为衡量物性的重要指标.总体来说,SEM图像分形维数可以用来反映孔隙形态的多样性和页岩孔隙的发育程度;NMR分形维数与储层物性之间的关系可用于评价页岩储层质量.
AbstractList P618.13; 为了表征陆相页岩的孔隙结构和分形特征,选取松辽盆地长岭断陷沙河子组陆相页岩作为研究对象,通过X射线衍射(XRD)分析、扫描电镜(SEM)图像分析、核磁共振(NMR)实验,运用分形维数理论,讨论NMR分形维数与矿物组成、地球化学参数、物性参数之间的相互关系,并且通过SEM图像提取技术定量化研究页岩储层孔隙特征.结果表明:沙河子组陆相页岩具有多种孔隙类型、孔径分布复杂、非均质性较强的特点.基于弛豫时间截止值,可将NMR 分形维数划分为束缚流体孔隙分形维数(0.060 9~1.420 4)和可动流体孔隙分形维数(2.964 0~2.986 9).矿物组成与分形维数的关系显示石英含量与束缚流体孔隙分形维数成负相关关系,黏土矿物含量与束缚流体孔隙分形维数成正相关关系;NMR分形维数与有机质含量呈线性相关,与成熟度不存在明显相关性;这说明矿物组成和有机质含量对NMR 分形维数起明显的控制作用.储层物性方面,NMR分形维数与孔隙率成线性负相关关系,而与渗透率成正相关关系,说明NMR分形维数能够作为衡量物性的重要指标.总体来说,SEM图像分形维数可以用来反映孔隙形态的多样性和页岩孔隙的发育程度;NMR分形维数与储层物性之间的关系可用于评价页岩储层质量.
Author 肖磊
高凤琳
李卓
张瀛涵
杨有东
侯煜菲
梁志凯
姜振学
王立伟
AuthorAffiliation 中国石油大学(北京)油气资源与探测国家重点实验室,北京 102249;中国石油大学(北京)非常规油气科学技术研究院,北京 102249
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Author_FL ZHANG Ying-han
LI Zhuo
LIANG Zhi-kai
JIANG Zhen-xue
WANG Li-wei
GAO Feng-lin
HOU Yu-fei
XIAO Lei
YANG You-dong
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DocumentTitle_FL Characteristics of Pore Structure and Fractal Dimension in Continental Shale Based on NMR Experiments and SEM Image Analyses—A Case Study of Shahezi Formation Shale in Changling Fault Depression of Songliao Basin,China
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Keywords 图像提取
分形维数
陆相页岩
核磁共振
扫描电镜
松辽盆地
孔隙结构
沙河子组
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PublicationYear 2020
Publisher 中国石油大学(北京)非常规油气科学技术研究院,北京 102249
中国石油大学(北京)油气资源与探测国家重点实验室,北京 102249
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Snippet P618.13; 为了表征陆相页岩的孔隙结构和分形特征,选取松辽盆地长岭断陷沙河子组陆相页岩作为研究对象,通过X射线衍射(XRD)分析、扫描电镜(SEM)图像分析、核磁共振(NMR)实验,...
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Title 基于NMR和SEM技术研究陆相页岩孔隙结构与分形维数特征——以松辽盆地长岭断陷沙河子组页岩为例
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