Geophysical identification of Cretaceous reservoirs in the Shinan area,Junggar Basin
Industrial oil flows have been successively obtained from the basal conglomerates of the Cretaceous Qingshuihe Formation in the Shinan area,Junggar Basin.However,this set of reservoirs exhibits multi-layer three-dimensional oil-bearing properties and signifi-cant vertical and horizontal variations.Therefore,there is an urgent need to overcome the challenge of the identification and fine-scale characterization of reservoirs.Based on the accurate calibration of seismic and geological horizons,this study reconstructed the paleo-geomorphology of the first member of the Cretaceous Qingshuihe Formation using based on the seismic flattening and residual thickness methods in three steps.By combining the reservoir prediction through natural gamma-ray pseudo-acoustic wave inversion,this study roughly identified the predominant factors controlling sedimentation and the spatial distributions of sand bodies.The results of this study provide an effective method combination for predicting Cretaceous reservoirs in the Shinan area.Furthermore,these results offer a suffi-cient scientific basis for oil and gas exploration in the glutenite reservoirs of the Cretaceous Qingshuihe Formation,thus effectively re-ducing the exploration risk.
3D seismic datapaleogeomorphologyquasi-impedance reservoir predictionoil and gas explorationJunggar Basin
万方数据
维普
