乌尔禾油田储层测井精细解释方法研究

Study of fine log interpretation of reservoirs in Wuerhe oilfield

针对乌尔禾油田油藏的储层物性变化较大、油水分布关系复杂、地层水复杂多变等实际情况,在对测井曲线进行了预处理之后,采用电阻率-孔隙度法确定了油层的孔隙度、含水饱和度和电阻率下限值,并建立了该地区储层参数测井精细解释模型,利用其模型对工区内300多口井进行了解释处理。解释结果表明,该套方法能够对该地区的测井精细解释提供科学合理的油层起算标准,并能准确地划分油水层,从而能为该地区的地质建模、油藏数值模拟以及储量计算提供准确的基础参数。

In Wuerhe oilfield, the reservoir poroperm characteristics have large variations, distributions of oil and water are complex, and the formation water is complicated and change greatly. After the logs are preprocessed, the resistivity- porosity method is used to calculate the lower limits of porosity, water saturation and resistivity of oil layers, and fine interpretation models are built for the reservoir parameters in this area. These models are used to process and interpret logs of over 300 wells in the study area Interpretation results show that these methods can provide rational zero standards of oil layers for fine log interpretation in the study area, and can accurately divide oil and water layers. Therefore, they can provide accurate basic parameters for geologic model building, numerical simulation of reservoirs and reserves calculation.