INTRODUCTION TO CASED-HOLE LOG INTERPRETATION

Instructor: Roger L. Nutt 5 days

Who should attend:

Newly-hired staff from all disciplines, and anyone – however long their oil-field experience – who needs to know what cased-hole logs are available, what they measure, and how to interpret the results. This course is not intended for staff who specialize in cased hole log interpretation, for which the Reservoir Monitoring and Production Log Interpretation course is more appropriate.

About this course

This course will familiarize you with all the common cased-hole surveys: cement bond surveys, corrosion logs, production logging tools, and the reservoir monitoring surveys, including pulsed neutron tools, phase velocity logs, water-flow logs and thru’-casing resistivity surveys.

Course Content:

• Cement bond logs, pulse-echo tools, ultra-sonic bond indicators.
• Corrosion logs – Electromagnetic thickness tools, pipe anomaly tools.
• Production logging tools and principles

· Flowmeters - how they work, what they measure.

· Bubble counter tools and techniques.

· Temperature tools.

· Gradiomanometer and fluid density tools and their application

· Water Hold - up meters.

· Calipers.

· What the presence of NORM means, and how to use gamma-ray and spectral gamma-ray to identify it.

· How production logging tools are affected by deviation.

· Pulsed neutron tools – TDT and C/O (Gamma Spectroscopy logging).

· Identifying the presence and speed of water flow behind the casing.

· Problems with horizontal wells - and how to solve them.

What you will learn...

The wide variety of tools available for measuring in and through casing, how they work, and how to interpret the results. Theoretical understanding of the tools will be reinforced by hands-on interpretation of innumerable examples from all over the world.