确定泥质砂岩储层地层水电阻率新方法探索

地层水电阻率始终是确定储层含水饱和度的一个关键参数。基于在未受注入水影响的目的层地层水矿化度等于邻近泥岩层束缚水矿化度的假设，提出了一种利用邻近泥岩信息求取地层水矿化度的方法，并用实际测井资料进行了试算。此方法的提出不仅对未水淹泥质砂岩储层的评价有一定的价值，同时对将来开展水淹层储层的混合液电阻率的求取也有一定的启示。

A New Method to Determine Formation Water Resistivity of Shaly Sand Reservoirs

Formation water resistivity is one of the key parameters used to determine formation water saturation. We developed a method to calculate the formation water salinity based on an assumption that the virginal water salinity of a reservoir approximates to that in the shale which is adjacent to the interest layer, and the latter can be determined from log data in the near shale. Field examples of this new method show that the new method is a good help to evaluation of the unflooded reservoir as well as to estimation of the mixed fluid resistivity in waterflooded reservoir.