摘要
探讨川东北元坝须家河组第二段下亚段气层低阻成因机制。通过系统分析储层段岩心薄片、物性、压汞、扫描电镜等分析测试资料,并对比其他区低阻现象,发现其岩性致密,导电矿物含量极少,微孔隙发育且含大量比表面积高的亲水性次生黏土矿物。这套储层低阻主要是地层含水引起,并且其特殊含水产状才是低阻的主要原因。
This paper discusses the genetic mechanism of the low resistance of the reservoir in Member2 of Upper Triassic Xujiahe Formation in the west of the Yuanba area in Northeast Sichuan.Through the systematic analysis of the rock slices,petrophysical characters,mercury injection parameters,SEM data and compared with the same phenomena of the low resistance in other areas.It is found that this reservoir has tight lithology,rarely conductive mineral content,well-developed micropores and a large number of hydrophilic secondary clay minerals with big specific surface.The low resistance of this reservoir is caused by the formation water and the special aqueous occurrence is the main reason of low resistance.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第5期577-581,共5页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
国家科技重大专项(2011ZX05002-004)
关键词
元坝
须家河组
电阻率
低阻
含水饱和度
黏土矿物
Yuanba
Xujiahe Formation
resistivity
low resistance
water saturation
clay mineral
conductivity
