26 - Cement Integrity

Cement Integrity Logging | Estimated Length : 1 hour 30 mins

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This semi-quantitative course covers all topics needed to calculate cement strength and bond index in both neat and light weight cements. You will learn how to analyze both modern and older style cement integrity logs. Numerous examples are used to illustrate CBL, VDL, CMT, CET, and USI logs. Casing and tubing inspection logs and a case history are also covered. This course is critical for completion and stimulation engineers, since a successful frac job is impossible in bad cement.


Petrophysicists, log analysts, geologists, reservoir engineers, completion engineers, stimulation engineers, and university / tech school students who wish to broaden their skills in more advanced uses of well logs.


  • Provides understanding of cement strength and bond log response
  • Provides understanding of CBL tool theory and practice
  • Provides "computer ready" mathematics
  • Gives insight into log quality problems that affect cement analysis
  • Permanent reference material


  • Introduction
  • Types of Cement Integrity Logs
  • Temperature Logs
  • Cement Bond Logs (CBL)
  • Cement Bond-Variable Density Logs (CBL-VDL)
  • Cement Mapping Logs (CMT, CET, PET)
  • Ultrasonic Imaging Logs (USI, RBT)
  • Casing / Tubing Inspection
  • Ultrasonic Methods
  • Electromagnetic Methods
  • Multi-Finger Caliper Methods
  • Case History
  • Exercises 26

ESTIMATED TIME : 1 hour 30 mins


Crain's Integrated Petrophysics, Courses 1 to 11 OR equivalent background

Basic understanding of well completion concepts

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
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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 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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