泥质砂岩三孔隙度测井解释方法研究

Research on Logging Interpretation Methods for 3 Porosities in Muddy Sandstone

针对大庆油田外围地区复杂泥质砂岩储层解释难的问题,介绍了泥质砂岩三孔隙度理论模型研究,以岩心分析资料为基础,明确了应用压汞和核磁共振资料划分三种孔隙度的方法;建立了三孔隙水导电理论模型、三孔隙组分解释方法,在此基础上开展了储层参数的测井解释方法研究,实现了应用岩心分析资料动态确定模型中饱和度参数,该模型在大庆外围地区部分井中应用,针对低电阻率油层、压裂产水层的解释,见到了较好的应用效果。

It is difficult to interpret the complicated muddy sandstone reservoirs in peripheral oilfields of Daqing oilfield. This paper is about the research on theoretical model with 3 porosities for muddy sandstone. Based on core analysis data, the method to divide 3 kinds of porosities with the application of intrusive mercury and NMR data has been established. Theoretical model for water conducting electricity with 3 porosities has been built. Based on the interpretation with 3 porosities components, the research on logging interpretation method of reservoir parameters has been done. According to core analysis data, the saturation parameter for the model can be determined dynamically. This model has been used in partial wells of Daqing peripheral area and the application results about low resistivity oil layers and interpretation of fractured water production layers is better.