歧东油田明下段油藏的储层砂体主要为曲流河相，其储油物性略亚于相邻的周边地区，但测井曲线特征明显、易于进行储层划分和对比。自然电位曲线负异常，泥岩具有低值的自然电位和低电阻率特征、且曲线较平直；储层砂岩测井曲线具有箱式特点，下部异常略高于上部异常。其孔隙度和含油饱和度与声波速度和地层密度具有较好的一致关系，测井资料储层表征明显 The reservoir sandbody of Mingxia reservoir in Qidong oilfield is predominantly meandering river facies with slightly lower oil storage properties than the adjacent surrounding areas, but the well logging curves have obvious features and are easy to divide and contrast. Natural potential curve negative anomalies, mudstone has low natural potential and low resistivity characteristics, and the curve is relatively straight; reservoir sandstone log has a box-type characteristics, the lower anomalies slightly higher than the upper anomaly. The porosity and oil saturation have a good agreement with the acoustic velocity and formation density, and the well logging data have obvious characteristics