6 Well seismic surveying and acoustic logging 1.4 Case study of a downhole acquisition, PSSL and acoustic logging, in the same borehole 44 1.5 Conclusion 46 References 47 Chapter 2 • Well seismic surveying 49 2.1 Introduction 49 2.2 Well seismic data acquisition 53 2.2.1 Necessary resources for data acquisition 53 2.2.2 Implementation in the field 53 2.2.2.1 Description of classical VSP operation in a vertical well 53 2.2.2.2 Well probes 54 2.2.2.3 Seismic source 56 2.2.2.4 Acquisition parameters 56 2.2.2.5 Security 57 2.2.2.6 Quality Control 57 2.2.2.7 Production 57 2.3 Seismic waves 57 2.4 Processing sequence 62 2.5 Application with a geotechnical dataset 71 2.6 Conclusion 74 References 76 Chapter 3 • Acoustic logging 77 3.1 Introduction 77 3.2 Acoustic logging data acquisition 79 3.2.1 Necessary resources for data acquisition 80 3.2.2 Implementation in the field 80 3.2.2.1 Description of an acoustic logging operation in a vertical borehole 80 3.2.2.2 Acoustic probes 81 3.2.2.3 Acquisition and visualization parameters 84 3.2.2.4 Acoustic logging in deviated well 84 3.2.2.5 Security 84 3.2.2.6 Quality control 84 3.2.2.7 Production 84 3.3 Acoustic waves 85 3.4 Processing sequence 88
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