ORIGIN AND IDENTIFICATION OF LOW RESISTIVITY OIL FORMATION IN SALT BED
盐系地层低电阻率油层形成机理与识别――以江汉盆地潜江凹陷潜江组为例

Based on the study of clay mineral types,characters of rock frameworks and grains,wettability of the rocks,conductance of special heavy minerals,the origin of low resistivity reservoir of Qiangjiang formation in Qiangjiang sag is identified: rock's character of reservoir has a little infection on the formation of low resistivity reservoir;irreducible water content in the rock is the major factor;the odditional conductivity caused by mud and clay and incursion of the mud filtrate are the minor factors.According to the characteristics of low resistivity reservoir,the diagram version method,well-logging curve overlap method and quantitative analysis etc are set up.The methods are taken in practice and got good results.