鄂尔多斯盆地东缘X地区致密砂岩气储层预测技术

Reservoir Prediction Technology of Tight Sandstone in X Area of Eastern Edge of Ordos Basin

鄂尔多斯盆地东缘X地区致密砂岩储层较薄,横向变化较快,储层预测难度较大。利用钻井、测井、地质资料及地震资料建立地质模型进行正演分析,利用正演的地震记录对地震剖面属性进行优选,运用以地质统计学反演为核心的地震储层预测技术来精细刻画储层分布特征,得到纵向上砂体刻画较清楚、平面上符合地质规律的预测成果,对于非均质储层的预测具有较高的实用价值。

The tight sandstone reservoirs in the X area of the eastern edge of Ordos Basin are relatively thin and have rapid lateral changes,making reservoir prediction difficult.The drilling,logging,geological data,and seismic data were used to establish a geological model for forward analysis,forward seismic records were used to optimize seismic profile attributes,and seismic reservoir prediction techniques with geostatistical inversion as the core were used to accurately depict reservoir distribution characteristics,obtaining prediction results that depict sand bodies clearly in the longitudinal direction and conform to geological laws in the plane,which has high practical value for the prediction of heterogeneous reservoirs.