The description techniques and hydrocarbon potential predicting at the second member of Shawan Formation in Chepaizi area,Juggar Basin

With the continuous improvement in exploration in northwestern of Junggar basin,the situation of exploration targets transform from the structural reservoir exploration to the lithologic reservoir exploration.The characteristics of this kind of lithologic reservoir are small thickness of reservoir,rapid change in horizontal and difficult to distinguish with seismic data in chepaizi area,however,with this characters,Basing on the high precision3D seismic data,The authors using fine synthetic seismogram correlation of multiple parameters to fulfil the reservoir location,forward modeling to clear the characteristics of oil and gas reservoir,prestack attribute and stacked multiple attribute analysis description the reservoir,Exploring the two-step pseudo acoustic inversion method to detection the oil-bearing reservoirs in the area,Eventually forming a subtle reservoir description methods which suitable the second member of Shawan Formation in Chunguang Oilfield.And good exploration results have been obtained in the application of the new 3D data by using the above method in this area.We discovered a series of oil and gas reservoirs such as P2-80.The methods have a certain guiding significance in the similar areas.