低孔低渗储层渗透率测井解释模型研究

采用岩心分析数据与测井曲线相结合的方法，引入泥质含量参数配合声波时差进行多元线性回归分析。建立鄂尔多斯盆地研究区低孔低渗储层渗透率测井解释模型。根据泥质含量特征二次分类后进行多元线性回归，建立两个渗透率测井解释模型相关性良好，对应于研究区两种不同的沉积微相特征；测井解释渗透率与岩心实测渗透率匹配良好，解释模型满足研究区精度要求。在沉积微相背景约束条件下，对研究区储层选择合理参数多元线性回归建立渗透率测井解释模型，可以使低孔低渗储层渗透率解释达到良好应用效果。

Study on the Well- logging Inferpretation Model of Reservoirs of Low Porosity and Permeability

The paper builds a well - logging interpretation model of reservoirs of low porosity and permeability in Ordos Basin on basis of two parts ： one is the combination of data about the core and borehole curve, the other is analysis of multiple regression which is taken out with the consideration of shale content parameters and interval transit time. Moreover, another well - logging interpretation model is established with the analysis of multile regression of revoirs which are classified according to their content of shale. The test results show that the two models are in high correlation, and can apply to the study on sedi- mentary microfacies of the two kinds of reservoirs in the studied area . Furthermore, the data about permeability of core get from the two models are close to the field test data, which means that the two models are precise. The study inspires scholars that well - logging interpretation model established with proper parameter and multiple regression model is useful.