地层条件下有机质页岩极化率与渗透率关系研究  

Study on relationship between polarization and permeability of organic shale under formation conditions

作　　者：闫帅[1,2] 严良俊[1,2] 向葵[1,2] 

机构地区：[1]长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100 [2]长江大学地球物理与石油资源学院,湖北武汉430100

出　　处：《能源与环保》2017年第3期29-33,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金联合基金(U1562109);国家973项目(2013CB228605;U1562109);国家青年基金项目(41404087)

摘　　要：针对目前页岩极化率与渗透率关系研究不明晰的问题,以川黔地区有机质页岩为例,采用电阻率频散实验测量研究方法,研究了30块页岩的矿物组分,测量了其渗透率,分析出地层条件下有机质页岩极化率与黄铁矿含量、渗透率和孔隙率等的关系。研究结果表明:影响页岩极化率的因素很多,页岩极化率与黄铁矿含量以及渗透率密切相关,黄铁矿含量与极化率成正相关关系,随着黄铁矿含量的增加,极化率随之增加,极化率随着渗透率增大而减小,研究为电性参数预测页岩物性储层参数提供了技术支持。Aiming at the unclear problem of the relationship between the shale polarization and permeability, taking organic shale in Si-chuan and Guizhou as an example, using the resistivity dispersion experiment measurement method, studied the mineral composition of 30 shale, measured its permeability, the relationship between the polarizability of organic matter shale and pyrite, permeability and po-rosity was analyzed. The results show that there are many factors that affect the degree of shale polarization, shale polarization is closely related to pyrite and permeability, pyrite has a positive correlation with polarizability, with the increase in pyrite, the polarizability in-creases, the polarizability decreases as the permeability increases,the study provides technical support for the prediction of shale physi-cal reservoir parameters by electrical parameters.

关 键 词：渗透率 极化率 模拟退火法 有机质页岩 孔隙度 

分 类 号：TE31[石油与天然气工程—油气田开发工程]