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13 - Carbonate Reservoirs

Basic Petrophysical Analysis | Estimated Time : 1 hr 30 mins

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This quantitative course continues coverage of basic petrophysical analysis into the realm of carbonate reservoirs. You will learn the impact of fractures, secondary porosity, mixed mineralogy, and the effects of gas in heavy minerals. TWO examples and a case history illustrate the topic.


Managers, geologists, log analysts, geophysicists, reservoir engineers, completion engineers, stimulation engineers, and university / tech school students who wish to become proficient in petrophysical analysis or who need to manage or make use of petrophysical results will benefit from this course.


  • Provides understanding of the various concerns implicit in carbonate reservoir analysis
  • Provides step-by-step procedures for calculations
  • Gives "computer-ready" mathematics
  • Provides exercises and worked examples for further study


  • Special Considerations in Carbonate Reservoir
  • Review Fracture Identification Methods
  • Secondary Porosity Index
  • Gas in Dolomite Problem
  • Exercise 3
  • Case History
  • Exercise 10

ESTIMATED TIME : 1hr 30 mins


Crain's Integrated Petrophysics, Lectures 1 to 12 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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  Reading Material - Course Companion
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  Complex Lithology with Gas and Heavy Minerals
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  Limestone and Dolomite Scale Logs
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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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