神木气田太原组储层分类评价研究

Reservoir Classification and Evaluation in Taiyuan Formation of Shenmu Gas Field

鄂尔多斯盆地神木气田太原组储层具有特低孔-低孔、特低渗-低渗以及非均质性强的特征,因而对储层的分类评价和预测有较大难度。结合该研究区的地质特征,以鄂尔多斯盆地神木气田太原组储层为研究对象,选择了资料丰富的30口井的参数数据,运用Q型聚类分析的方法对该区域进行了分类,得到了分类评价指标;应用判别分析法对Q型聚类分析的分类指标进行验证,给出了储层分类评价的定量描述模型。试验结果表明,所给出的评价方法与其他评价方法具有高度的吻合度。

Reservoirs in Taiyuan Formation of Shenmu Gas Field in Orclos Basin have characteristics of low porosity,low permeability and strong reservoir heterogeneity,it is difficult to predict and evaluate the effective reservoirs.Combined with geological characteristics of study area.Taiyuan Formation in Shenmu Gas Field in Ordos Basin is taken as a object of study.A research has been carried out by selecting the parameters from 30 wells,Q-type cluster analysis is firstly used to classify reservoirs and obtain the criteria of evaluation and classification.And then the classification indicators of Q-type cluster analysis are verified by using discriminatory analysis,by which a quantitative model of reservoir evaluation is obtained.The results show that the method mentioned in this paper is highly consistent with other evaluation methods.