摘要
本文应用研究区主要取心井目的层段的压汞资料、薄片、扫描电镜、铸体薄片及图象分析等资料的综合分析、研究,揭示了孤东油田七区西馆上段河流相储层的孔隙结构非均质特征。馆上段储层的孔隙类型以原生孔隙为主,孔隙结构非均质性明显;各沉积微相孔隙结构特征和非均质程度有明显差异;从心滩、边滩、河道充填到河道边缘,其孔喉半径依次变小,孔隙结构变复杂,非均质程度增强。
On the basis of an overall analysis and study of mercury—injection data,thin sections, SEM, cast sections and diagram analysis of the target intervals of main coring wells in the study area, the paper reveals pore structure heterogeneity of fluvial facies reservoirs of the upper member of the Guantao Formation in the west of the seventh district of the Gudong oilfield. The pore types of reservoirs of the upper member of the Guantao Formation are mainly primary pores. The heterogeneity of pore structure is obvious. There is obvious difference in pore structure characteristics of sedimentary microfacies,and their degrees of heterogeneity are also different. From the channel bar,point bar and channel filling to channel border ,the radius of the pore throats becomes smaller successively, the pore structure becomes more complicated and the degree of heterogeneity is increased.
出处
《地质论评》
CAS
CSCD
北大核心
1994年第S1期90-96,共7页
Geological Review
关键词
孔隙结构
毛管压力曲线
孔喉半径
孤东油田
pore structure
capillary pressure curve
radius of pore throat
Gudong oilfield
