摘要
在常规储层中,核磁共振作为一种快速、无损和灵敏的技术,既可以准确评价储层的孔隙度、渗透率、饱和度三参数,还可以精细刻画储层岩石的孔隙结构.但由于页岩储层致密,干酪根发育,黏土含量高,孔隙类型和孔隙结构复杂,烃的赋存空间和赋存方式特殊,而且存在一定含量的黄铁矿和沥青,导致页岩储层核磁共振响应机理复杂,基于核磁共振的储层参数的准确评价存在困难.为了了解目前核磁共振技术在页岩油气储层参数评价中的研究现状,在参阅大量国内外相关文献的基础上,重点介绍了核磁共振技术在评价页岩储层孔隙度、孔隙结构、渗透率以及饱和度等方面的研究进展.同时,针对解决核磁共振技术在评价页岩储层参数中存在的局限性提出了个人认识,旨在为页岩储层相关研究提供借鉴与参考.
In conventional reservoirs,nuclear magnetic resonance,as a fast,non-destructive and sensitive technique,can not only accurately evaluate the three parameters of reservoir porosity,permeability,and saturation,but also finely describe the pore structure of the reservoir rock.However,due to dense shale reservoirs,well-developed kerogen,high clay content,complex pore types and pore structures,special occurrence spaces and modes of hydrocarbons,and a certain content of pyrite and asphalt,the nuclear magnetic resonance response mechanism of shale reservoir is complicated,and it is difficult to accurately evaluate reservoir parameters based on nuclear magnetic resonance.In order to understand the current research status of nuclear magnetic resonance technology in shale oil and gas reservoir parameter evaluation,based on referring to a large number of relevant literature at home and abroad,this paper focuses on the research progress of nuclear magnetic resonance technology in evaluating shale reservoir porosity,pore structure,permeability and saturation.At the same time,personal knowledge is proposed for solving the limitations of nuclear magnetic resonance technology in evaluating shale reservoir parameters,aiming to provide reference and reference for related research on shale reservoirs.
作者
孙颖
SUN Ying(China University of Petroleum(East China),Qingdao 266580,China)
出处
《地球物理学进展》
CSCD
北大核心
2023年第1期254-270,共17页
Progress in Geophysics
关键词
核磁共振
页岩
孔隙度
孔隙结构
渗透率
饱和度
Nuclear magnetic resonance
Shale
Porosity
Pore structure
Permeability
Saturation
