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24 - Inversion, Vertical Seismic Profiles, Amplitude Versus Offset

Seismic Petrophysics | Estimated Time : 40 mins

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This course provides an overview of advanced topics in seismic petrophysics, including attribute analysis, seismic inversion, vertical seismic profiles (VSP), and amplitude versus offset (AVO). It is intended as a primer for non-geophysicists who work with logs in support of geophysical projects. You will learn how these processes are performed, how logs are used to calibrate results, and how geophysical and geological interpretations are made from them. Numerous examples and case histories are included.


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 understanding of advanced seismic processing applications
  • Provides procedures for using logs to calibrate seismic inversions and AVO models
  • Provides "computer ready" mathematics
  • Gives insight into how log analysis can support geophysical interpretations


  • Seismic Concepts for Non-Geophysicists
  • Seismic Data Acquisition
  • Seismic Attributes Basics
  • Seismic Inversion Procedures
  • Capturing Low Frequency Components
  • Displaying Seismic Inversion Traces
  • Case Histories: Seismic Inversion
  • Porosity/Lithology From Shear Seismic
  • Case Histories: Porosity/Lithology
  • Vertical Seismic Profile Concepts
  • Vertical Seismic Profiles On Wireline
  • Vertical Seismic Profiles While Drilling
  • Case Histories: Vertical Seismic Profiles
  • Amplitude Versus Offset (AVO)
  • Case Histories: Amplitude Versus Offset
  • Exercise 24



Crain's Integrated Petrophysics, Lectures 1 to 13 and 21 to 23 OR equivalent background

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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  Porosity Lithology Models and Case Histories
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  Reading Material
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  Course Feedback
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  Completion Certificate
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Frequently Asked Questions

When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does 12-month unlimited access sound? After purchase, you have unlimited 12 months to access to this course as often as you'd like - across any and all devices you own.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 30 days and we will give you a full refund.

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