A Lithology-assembly-based Method for Reservoir Prediction——By Taking Xilinhaolai Area in Baiyinchagan Sag for Example

The lower member of Tenggeer Formation in Xilinhaolai Area was thinner interbedding,where oil enrichment was determined by reservoir distribution,thus the reservoir prediction should be studied,it was important to predict reservoir.Based on the analysis of the strata litho-structure,the geologic meaning of the seismic reflection was confirmed after an exact sand-body calibration and forward modeling.The ability using seismic data to identify the thin reservoir was enhanced and the uncertainty of seismic prediction was reduced.After prediction of these main oil-bearing sand bodies,it provides a reliable base to the exploration and development.The result indicates that the prediction accordant rate is high and it is an important breakthrough of the exploration to the structure-litho reservoir in this area.