黔北牛蹄塘组页岩孔裂隙与渗透性特征  

Pore Fracture and Permeability Characteristics of Shale in Niutitang Formation of North Guizhou

作　　者：孙文吉斌 左宇军[1,2,3,4] 邬忠虎 许云飞[1,2,3,4] 

机构地区：[1]贵州大学矿业学院,贵阳550025 [2]贵州省非金属矿产资源综合利用重点实验室,贵阳550025 [3]贵州省优势矿产资源高效利用工程实验室,贵阳550025 [4]复杂地质矿山开采安全技术工程中心,贵阳550025

出　　处：《煤炭技术》2017年第12期95-98,共4页Coal Technology

基　　金：国家自然科学基金重点项目(51574093);贵州省重大应用基础研究项目(黔科合JZ字[2014]2005);贵州省高层次创新型人才培养项目(黔科合人才(2016)4011号)

摘　　要：为了研究页岩孔裂隙与渗透特性的关系,利用电镜扫描与岩石力学实验系统对页岩试样进行实验,得到页岩孔隙结构,以及页岩渗透率与围压和渗透压差的关系,讨论了页岩在不同围压下的破坏模式,揭示了页岩渗透率随围压变化和渗透压差变化而变化的内因。In order to study the relationship between the fracture and permeability of shale, the experiment system of SEM and rock mechanics are used to test the shale samples. The experimental results are obtained from the shale pore structure, the relationship between permeability and confining pressure and osmotic pressure. Shale failure modes under different confining pressure are discussed. The internal factors of shale permeability changing with the change of perimeter and osmotic pressure differente are revealed.

关 键 词：页岩 孔裂隙 围压 渗透压差 渗透性 

分 类 号：TE311[石油与天然气工程—油气田开发工程]