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CWLS04SC Editing Logs for Geophysical Purposes

This semi-quantitative course covers 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 (log modeling) and creation of velocity and density logs from other log 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.
You can't use a well log for geophysical purposes unless it is corrected for invasion and bad hole effects. Find out how to do it here.

COURSE LEVEL: Beginner to Intermediate, calculator required

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
1.17 Elastic Properties of Rocks

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

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

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

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

 http://www.spec2000.net/00-session8.htm 
Location: Suncor Energy Center, Ottawa Room, 17th Floor 150 - 6th Ave SW

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PROFESSIONAL BACKGROUND
E. R. (Ross) Crain, P.Eng. is a Consulting Petrophysicist and Professional Engineer with over 45 years experience in reservoir description, petrophysical analysis, and management. He is a specialist in the integration of well log analysis and petrophysics with geophysical, geological, engineering, and simulation phases of oil and gas exploration and exploitation, with widespread Canadian and Overseas experience.

Strengths include excellent managerial skills, especially in integrated, multi-disciplined field studies, an ability to bring these projects in on-time and within budget, a successful entrepreneurial background, a proven record of innovation in computer applications, and an ability to teach these skills. 
 EDUCATION
     1962, McGill University, Montreal
        Bachelor of Engineering (Electrical) 

     1972, University of Calgary, Alberta
        Certificate in Management Development
        (Business Administration Certificate Program)

     1980, Olds College
        Farm Business Management

     1963 - 2006, Industry courses in well log analysis, core analysis,
        seismic processing, mining geophysics, DST analysis, petroleum
        economics, production logging, water chemistry ........,


PROFESSIONAL ACHIEVEMENTS

  • 1984 - Present: Principal Consultant, Spectrum 2000 Mindware, an independent petrophysical consulting practice, specializing in petrophysical analysis for integrated projects, mentoring, forensic analysis, and courseware.
  • 1973 - 1986: President and Principal Consultant, Log/Mate Limited, where he developed and successfully marketed the first desktop microcomputer system for log analysis (1976), five years before the terms microcomputer, personal computer, or PC had been coined. 
  • 2005 - 2007: University of Calgary - Invited to assist in curriculum design and course presentation of a new Petrophysics course for 3rd year Geology and Geophysics students. 
  • 2004 - Present: University of Tulsa - Invited to teach Petrophysics portion of TU Leader Program run by TU for Schlumberger engineers. 
  • 2001 - Present: Published "Crain's Petrophysical Handbook - 3rd Millennium Edition", an Internet based eLearning project, also available on CD-ROM, with associated spreadsheet software.
  • 1994: Elected an Honorary Member of Canadian Well Logging Society. President 1990, Treasurer 1988 and 1989, Publications Chairman 1981 and 1982. 
  • 1986 - Published hardcover textbook, "The Log Analysis Handbook", Pennwell, widely used as a reference for practical quantitative petrophysical log analysis.  
  • 1983 - 1986: Expert systems research on artificial intelligence applications in petrophysics for Alberta Research Council / D&S Petroleum Consultants Joint Venture-
  • Published more than 40 technical papers, receiving Best Paper of Year Award CWLS (1985), CSEG (1981), SOC (1964), Keynote Speaker, Libya (2000).
Leader: Ross Crain
Dates: May 3, 2010
Max Attendance: 30 participants
Trip/Course Fee: pre-early bird: $450, post-early bird: $500