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21 - Seismic Petrophysics

Geoscience Field of Seismic Petrophysics | Estimated Length : 1 hr

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This course provides an overview of the broad geoscience field of Seismic Petrophysics. First we distinguish between seismic modeling and modeling of well logs in support of seismic modeling. Which logs may be useful in a seismic model and a description of the Shared Earth Model are presented. That model means that petrophysicists, geophysicists, geologists, and reservoir engineers "see" the same rock sequence and the same rock properties as each other. Lectures 22 to 25 show methods we use to apply these concepts to real world examples. A comprehensive case history is used to illustrate the concept.


Petrophysicists, log analysts, geophysicists, geologists, reservoir engineers, and university / tech school students who need to generate log analysis results in aid of seismic modeling, synthetic seismograms, seismic inversion, or AVO models.


  • Provides an overview of the objectives of seismic petrophysics
  • Provides an illustrative example of the utility of a seismic petrophysics approach
  • Gives insight into how log analysis can support geophysical models


  • Seismic Petrophysics Basics
  • Seismic Modeling
  • Log Modeling
  • Logs Used in Seismic Interpretation
  • The Shared-Earth Concept
  • Exercise 21



Crain's Integrated Petrophysics, Lectures 1 to 13 OR equivalent background.

Lecture 25 may be helpful (excluding Exercise 25) to explain seismic methods and terminology.

Basic understanding of geology and well logging.

Your Instructor

Ross Crain
Ross Crain

Mr Crain is a Professional Engineer with over 35 years of experience in reservoir description, petrophysical analysis, and management. He has been 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. He has an Engineering degree from McGill University in Montreal and is a registered engineer in Alberta.

He wrote “The Log Analysis Handbook”, and he offers seminars, mentoring, or petrophysical consulting to oil companies, government agencies, and to consulting service companies around the world. Projects have spanned conventional and unconventional reservoirs in more than 40 countries.

Ross is credited with the invention of the first desktop log analysis system (LOG/MATE) in 1976, 5 years before IBM invented the PC. He continues to advise and train people on software design, implementation, and training. For his consulting practice, he uses his own proprietary software (META/LOG), and is familiar with most commercial systems.

He has won Best Paper Awards from CWLS and CSEG and has authored more than 30 technical papers. Mr Crain was installed as an Honorary Member of the Canadian Well Logging Society for his contributions to the science of well log analysis.

Ross's current interest is development of practical solutions for petrophysical analysis of all forms of unconventional reservoirs, determination of accurate mechanical properties of rocks for stimulation design, mentoring of both novices and experienced petrophysicists.

Class Curriculum

  Welcome to the course
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  Seismic Petrophysics
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  Log Modeling / Log Editing Concepts
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  Seismic Check Shots (SRS, VSP)
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  Reading Material
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  Course Feedback
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  Completion Certificate
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