石油地质与工程2025，Vol.39Issue(3)：35-40,6.
碳酸盐岩储层孔隙结构及其对储层物性的影响
Pore structure of carbonate reservoirs and its influence on reservoir physical properties:a case study of Yichuan-Huanglong area in the Southeast of Ordos Basin
摘要
Abstract
The exploration potential of the fifth member of Majiagou Formation of Ordovician in Yichuan-Huanglong area of Ordos Basin is huge.By means of drilling core observation,casting thin section identifi-cation,scanning electron microscope and high-pressure mercury injection data analysis,the reservoir space type and microscopic pore throat structure characteristics of carbonate reservoirs in Majiagou Formation of Ordovician in Yichuan-Huanglong area are finely characterized,and five parameters,namely porosity,permeability,median radius of saturation,displacement pressure and median pressure of saturation,are se-lected to classify the reservoirs by SPSS software,and their oil and gas geological significance is discussed.The research results show that:The reservoir rocks in the fifth member of Majiagou Formation in the study area are mainly limestone,dolomite and evaporite,with great lithology variation and great thickness in the longitudinal direction.A large number of dissolution fractures and pores are developed in the reservoir.The reservoir pores in the study area are generally undeveloped,with an average porosity of 3.18%and an aver-age permeability of 2.15×10-3 μm2.Reservoirs are divided into three types:type I,type II and type III,in which type I has good physical properties and is the key object for subsequent development.关键词
宜川-黄龙地区/马家沟组五段/碳酸盐岩储层/孔隙结构/储层物性Key words
Yichuan-Huanglong area/the fifth member of Majiagou Formation/carbonate reservoirs/pore structure/reservoir physical properties分类
石油、天然气工程引用本文复制引用
刘梦,李爱荣,霍瑞麟,赵凯丽,侯宾东..碳酸盐岩储层孔隙结构及其对储层物性的影响[J].石油地质与工程,2025,39(3):35-40,6.基金项目
国家自然科学基金项目"鄂尔多斯盆地南部长6油层组地层水特征与油气富集规律研究"(41772140). （41772140）
