Dr. Xiwen Wang is the Vice President of the northwest Branch of the Petroleum Exploration and Development Research Institute, and is well known as a senior technical expert of CNPC. He has chaired numerous major sci-tech projects for CNPC, publishing nearly a hundred papers for domestic and international academic periodicals.

• Preface vii1 Study on Method for Relative Fidelity Preservation of Seismic Data 11.1 Introduction 11.2 Discussion on Impact on Processing of High]resolution, High SNR for Seismic Acquisition and Observation Mode 31.3 Discussion on the Cause of Notching 111.4 Discussion of Impact on Processing of Relative Fidelity Preservation Seismic Data for Seismic Acquisition and Observation Mode 171.5 Comparison of Results of High]resolution, High SNR Processing and Relative Fidelity Preservation Processing 281.6 Elastic Wave Forward Modeling 301.7 Conclusions 33References 342 Method and Principle for Seismic Migration and Imaging 372.1 Kirchhoff Integral Prestack Depth Migration 372.2 Amplitude Preservation Fourier Finite Difference Prestack Depth Migration Method 402.3 Reverse Time Migration 46References 733 Study of Reverse Time Migration Method for Areas With Complicated Structures Based on the GPU/CPU System 753.1 Introduction 753.2 The GPU/CPU High]performance Calculation and Its Application in Seismic Exploration 773.3 Study on the Two]way Wave Extrapolation Operator and Its Boundary Conditions 823.4 Study on the Imaging Condition and Low]frequency Noise Suppression Method 913.5 Study and Application of RTM Prestack Imaging Algorithm based on the GPU/CPU System 983.6 Conclusions 111References 1144 Study and Application of Velocity Model Building Method for the Areas with Complicated Structures 1174.1 Introduction 1174.2 Status Quo and the Development of the Velocity Model Building Method 1184.3 Impacting Factors for  the Velocity Model Building 1204.4 Study and Application of the Seismic Velocity Model Building Method 1284.5 Quality Monitoring and Accuracy Discussion of the Seismic Velocity Model Building 1564.6 Velocity Analysis Method for Reverse Time Migration in Angle Domain 1624.7 Study of the Full Waveform Inversion Method 172References 1805 Case Study 1835.1 Application of 3D Prestack Reverse Time Migration in Subsalt Imaging 1835.2 Application of High]density All]round Seismic Data Processing in the Carbonatite Region 2105.3 Application of Seismic Imaging Method for Complicated Structures in the Tuha and Jiuquan Basins 2585.4 Application of the Seismic Prestack Imaging Method in the Buried Hill Structural Zone in the Nanpu of Jidong Oilfield 303References 329Index 333