边城油田陈家舍区块戴一段储层下限参数研究

Research on lower limit parameters of Dai-1 member of Chenjiashe block in Biancheng oilfield

通过典型井四性关系研究,结合录井、试油资料,建立了陈家舍区块油藏孔隙度和含油饱和度等测井解释模型。并通过分析化验数据的对比验证了解释模型的正确性,为确定研究区储层有效厚度下限奠定了基础。研究结果表明,戴一段储层孔隙度大于18.5%,含油饱和度大于45%,泥质含量小于20%,电阻率大于4Ω·m,声波时差大于270μs/m时,为标准油层。戴一段油藏有效储层下限的确定方法对临近区块有效开发具有指导意义。

Through studying the four-property relationship of typical wells, and combined with well logging and testing data, log in- terpretation models of Chenjiashe block were established, which involved porosity and oil saturation. By comparing with test data, the exactness of interpretation model was veried, thereby providing basis for determining the lower limit parameters of reservoir ef- fective thickness in the study area. The research shows that Dai- 1 member is a normal oil layer and its porosity is greater than 18.5 %, oil saturation is greater than 45 %, shale content is lower than 20 %, resistivity is greater than 4Ω·m, and acoustic travel time is greater than 270 μs/m. The lower limit determination method of Dai-1 member has guiding significance for adjacent blocks.