34 - Tight Oil

Analyzing Tight Oil Reservoirs | Estimated Length : 60 mins

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This course covers the visual and numerical log analysis methods for evaluating tight oil plays. First we will distinguish between tight oil (in low porosity clean or shaly sands and low porosity carbonates) from true oil shales (course 31) and from so-called "shale oil" plays. Tight oil and shale oil plays may or may not contain mature kerogen, and may therefore contain some adsorbed gas. You will learn the specialized knowledge required to address the kerogen and shale corrections required in this unconventional environment. Radioactive sands and low resistivity sands are also covered in detail. Examples specific to this environment are provided.


Petrophysicists, log analysts, geologists, reservoir engineers, stimulation engineers, and university / tech school students who wish to broaden their exposure to unconventional uses of well logs.


  • Provides insights into the many varieties of tight oil plays
  • Provides step-by-step procedures for analysis
  • Provides "computer ready" mathematics
  • Answer oriented results, with quality control guided by core assays


  • Tight Oil Basics
  • Shale Volume
  • Porosity
  • Water Saturation
  • Permeability
  • Lithology
  • Pyrite Corrections
  • Reservoir Quality in Tight Oil
  • Tight Oil Examples



Crain's Integrated Petrophysics, courses 1 to 13 and 27 OR equivalent background

Basic understanding of geology and logging tool response

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.

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 lifetime access sound? After enrolling, you have unlimited access to this course for as long as you 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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