Multi-Attribute Analysis and Its Application in Tight Sand Gas Reservoir Prediction - A Case Study in the Sixth Member of XuJiahe Formation

In this project, curvature attributes are exploited to locate the fracture and fault developed zone, phase change attributes are utilized to depict sedimentary margin and strong amplitude attributes on seismic section are selected to reflect effective sand distributed region. P wave which is obtained though impedance inversion can be transformed into porosity and permeability information of target layer on the basis of well log statistics. Combined with tectonic and sedimentary analysis, favorable reservoir developed zones are predicted. The comparison shows fair to good agreement between the predicted and actual occurrence of fractures and it provides the research foundation from theory to case study for the exploration and development of tight sand gas reservoir.