地层水矿化度是地层水的固有特点，是其中含有各种矿物元素含量的总和，其大小与地层成藏环境和岩石碎屑颗粒沉积物来源有关，常见的元素有Ca2+,Mg2+,Na+,K+,HCO3-,Cl-。
地层水矿化度对岩石电阻率绝对值的影响很大。
The formation water salinity has a large effect on the absolute resistivity values.
无论地层水矿化度高或低，粘土附加导电均可能造成油气层低阻。
No matter what the salinity of stratum-water is high or low, the additional conductivity influence of clay may make pay have low resistance.
泥质砂岩视地层因素与地层水电阻率有关，随地层水矿化度升高而增大。
The apparent formation factor increases with the increase of the salinity of formation water.
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