SC3-RAV™ 2011 - Baziw Consulting Engineers Ltd.

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BCE SC3RAV 2011 Seismic Data Analysis Software Chapter 1 Introduction 1.1 What is SC1-RAV? SC1-RAV is a Windows® program, which facilitates comprehensive Downhole Seismic Testing (DST) data reduction, analysis, and display. The user is provided with an extensive set of mathematical tools and patented algorithms to derive DST interval velocities and to quantify vertical seismic profiles. In addition, SC1-RAV allows the review of frequency spectra, the comparison of both unfiltered and digitally filtered traces, and the plotting of interval velocity profiles. SC1-RAV also provides extensive chart editing, plotting, and exporting functionality. SC1-RAV includes the following features: • Configurable for either geophones or accelerometers. • Extensive frequency spectrum analysis. • Bandpass, high pass, low pass, and notch digital filters. • Patented P-Wave and S-wave velocity estimation algorithm. • Batch job processing. • Source wave arrival time estimation. • Linear least squares regression interval velocity estimation. • Reverse Polarity Technique. • Forward Modeling Downhill Simplex Method (FMDSM) in estimating interval velocities. • Display of seismic depth profile with trend line specification. • Display of peak particle accelerations, velocities, and displacements. • Calculation of interval Gmax values. • The ability to carry out data interpolation to increase the time series resolution. • Post data stacking. • Application of a signal decay function to minimize the effect of source wavelet multiples. • Display of calculated interval velocities. Version 11.1.0 Page 1
BCE SC3RAV 2011 Seismic Data Analysis Software 1.2 Organization of users manual The purpose of this manual is to instruct users of SC1-RAV in the use of the program by explaining its structure, taking the user step by step through the program menus, and specifying the use of interactive graphics and I/O routines. In addition, the manual contains the following items: • Appendix 1 provides a copy of the paper entitled “Digital filtering techniques for interpreting seismic cone data.” This paper outlines the mathematical technique utilized in obtaining optimal crosscorrelation time shifts. • Appendix 2 provides a copy of the paper entitled “Derivation of seismic cone interval velocities utilizing forward modeling and the downhill simplex method”. This paper outlines the mathematical algorithms utilized in the Forward Modeling and the Downhill Simplex Method (FMDSM). If required, BCE can also provide a thorough training course in the use of the SC1-RAV software package. Alternatively, the user can contact BCE to obtain a step-by-step instructional document that outlines the estimation of interval velocities utilizing the SC1-RAV software. The methods of analysis covered range from basic trend line estimation to more advanced patented cross-correlation techniques and iterative forward modeling. The user is also provided with an exercise document and associated seismic data set. Version 11.1.0 Page 2
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SC3-RAV™ 2011 - Baziw Consulting Engineers Ltd.

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