Spectrum 2000

SPECTRUM 2000 COURSE OUTLINE
c. 1978 - 2008 E. R. (Ross) Crain, P.Eng.
Rocky Mountain House, Alberta Canada T4T 2A2
403-845-2527 email usail
Updated 15 Oct 2007

Session EIGHT - SEISMIC PETROPHYSICS
Course Outline and Instruction Materials c. 1978 - 2008 E. R. (Ross) Crain, P.Eng.

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Integrated Courseware Connecting Logs, Cores, Tests, Productivity, Cash Flow, and Seismic Petrophysics - Since 1973

Students in this class will have varied experience with logs, but need a clear understanding of logs in relation to seismic modeling to enhance their job skills. This seminar is supported by "Crain's Seismic Petrophysics" (152 pages) reference manual and exercises, a high quality PowerPoint presentation, and 1 or 2 days of instruction.

DURATION: 1 day - 8 Professional Development Hours (PDH)

DESIGNED FOR: Anyone who wants to do more with their logs to calibrate synthetic seismograms, seismic inversion, time to depth conversion, AVO, and attribute analysis for lithology/porosity estimates:

Exploration and Production Geologists
Reservoir and Development Engineers
Log Data Processors and Analysts
Exploration Geophysicists and Data Processors
Geological, Geophysical, or Engineering Technologists
Managers and Entrepreneurs
Service Company and Consulting Personnel

SUMMARY: This quantitative course covers all topics needed to calculate log response in support of seismic modeling, creation of synthetic seismograms, and synthetic seismic sections. Editing and repair of sonic and density logs and creation of velocity and density logs from other data is stressed. Fluid and rock replacement concepts, as well as uses of compressional and shear acoustic logs to calibrate inversion, AVO, and porosity/lithology analysis from seismic attributes wraps up the subject.

BENEFITS:

provides understanding of elastic properties of rocks and their relationship to well logs and seismic attributes
provides understanding of the rock/fluid model for log analysis
provides step-by-step procedures for modeling logs for seismic purposes
provides "computer ready" mathematics
gives insight into log quality problems that affect seismic models
provides examples of use and abuse of seismic inversion and AVO models
provides worked examples of lithology/porosity attributes for further study
permanent reference material

SEMINAR OUTLINE:

EDITING and MODELING LOGS
1.01: Seismic Petrophysics and Seismic Modeling
1.02: Seismic Petrophysics and Well Log Modeling
1.03: Logs Used for Seismic Petrophysics
1.04: Log Editing Concepts
1.05: Seismic Check Shots
1.06: Editing Sonic Logs With SRS and VSP Data
1.07: Modeling Sonic and Density Logs With Trend Data
1.08: Modeling Sonic and Density Logs From Resistivity Data
1.09: Modeling Sonic and Density Logs From Neutron and Gamma Ray Data
1.10: Modeling Sonic and Density Logs With Regression
1.11: Modeling Sonic and Density From Log Response Equation
1.12: Modeling the Sonic Log in Vuggy Porosity
1.13: Modeling the Sonic Log Response From Gassmann Equation
1.14: Integrating the Sonic Log
1.15: Acoustic Impedance and Reflection Coefficients
1.16: Quicklook Log Analysis Calculations for Geophysicists
__1. Nomenclature for Log Analysis Models
__2. Nomenclature for Seismic Models
1.17: Elastic Properties of Rocks
1.18: In Conclusion
1.19: Exercises

CASE HISTORIES - MODELING LOGS
2.01: Seismic Modeling With Modeled Logs
__1. Fluid Replacement in Reef
__2. Fluid Replacement in Gas Sand
__3. Editing with Trend Lines
__4. Editing Sonic Log
__5. Fisher – Good Editing
__6. Faust, Smith, Wyllie Editing
__7. Layer Replacement on Reef
__8. Editing by Regression
2.02: In Conclusion
2.03: Exercises

SYNTHETIC SEISMOGRAMS
3.01: Seismic Data Acquisition
3.02: Seismic Velocity Analysis Techniques
3.03: Calculating Seismic Velocity From Logs
3.04: Calculating Interval Velocity From Seismic Data 3.05: Time to Depth Conversions
3.06: Seismic Velocity and Dipping Beds
3.07: Seismic Modeling Concepts
3.08: Step By Step Procedure for Modeling
3.09: Integrating the Sonic Log
3.10: Acoustic Impedance and Reflection Coefficients
3.11: Calculating Seismic Wavelets
3.12: Convolution of Wavelet & Reflection Coefficients
3.13: Case Histories: Synthetic Seismograms
__1. Salt Solution
__2. Devonian Reef
__3. Granite Wash Sandstone
__4. Stratigraphic Trap
3.14: In Conclusion
3.15: Exercises

SEISMIC INVERSION
4.00: Introduction To This Chapter
4.01: Seismic Inversion and Synthetic Sonic Logs
4.02: Capturing Low Frequency Components
4.03: Displaying Seismic Inversion Traces
4.04: Case Histories: Seismic Inversion
__1. Carbonate Strat Trap
__2. Carbonate Reef
__3. Porosity Estimation
__4. Potash Mining
4.05: In Conclusion
4.06: Exercises

VSP, AVO, and POROSITY/LITHOLOGY
5.01 Vertical Seismic Profiles On Wireline
5.02 Vertical Seismic Profiles While Drilling
5.03 Case Histories: Vertical Seismic Profiles
5.04: Amplitude Versus Offset (AVO)
5.05: Case Histories: Amplitude Versus Offset
5.06: Porosity/Lithology From Shear Seismic
5.07: Case Histories: Porosity/Lithology
5.08: In Conclusion
5.09: Exercises