Structural Interpretation And Reservoir Prediction Of Jurassic Badaowan Formation In Mahu Sag

In recent years,the Triassic exploration in the slope area of Mahu sag has made a breakthrough.But the reservoir is buried relatively deep about 4000 m,so it is difficult to guarantee the development benefit,and the current international oil price is running at a low level.Therefore,it is necessary to develop new ideas to find shallow and high-efficiency reservoirs with relatively shallow burial and higher efficiency.Taking the Badaowan formation of Jurassic system in Mahu sag as the main target layer,combining the existing geological seismic data and synthetically utilizing the relevant data of seismic,logging,geology,drilling and so on,the paper carries out the research of high-quality reservoir prediction and fine fracture interpretation.Firstly,the basic situation of geological seismicity in the target area is analyzed synthetically.By using the techniques of fine reservoir calibration,seismic forward modeling and seismic attribute analysis to depict the boundary of the facies zone,the prestack boundary is used.The poststack inversion prediction technique is used to study the lateral distribution and development of high quality reservoirs in the target area,and then,by establishing the seismic response identification standard,the coherence technique and curvature are used to reduce the widely developed faults in this area.The small faults without continuous fault are interpreted in detail.The research shows that the reservoir development in this area is mainly concentrated in the first member and sand formation of Badaowan formation,and three major fault block traps are developed,which provides the conditions for regional reservoir formation.