Location

Date

Duration

Language

Discipline

Introduction

This course is designed for participants with no prior experience in log analysis or interpretation. It introduces the fundamental techniques required to interpret open hole well logs. Participants will explore both quick-look qualitative methods and more detailed quantitative approaches. The course content is technically broad and not tied to any specific software; all calculations are performed manually using a calculator. Emphasis is placed on both the theoretical foundations and the practical application of log interpretation. The course includes hands-on exercises, real log examples, group discussions, and practical tips. A comprehensive manual is provided for ongoing reference beyond the course. 

Objective

At the end of the training course, participants will:

• Identify the primary lithologies present and determine the volume of each. 

• Calculate porosity from well log data. 

• Detect the presence of hydrocarbons and estimate their quantities. 

• Apply a systematic approach to log interpretation, incorporating real-world practical considerations. 

• Understand the applications and limitations of key specialty logging tools. 

Audience

Reservoir engineers, petroleum engineers, production engineers, geologists, geophysicists, managers, independent operators, marketing personnel and anyone who needs a practical understanding of open hole log interpretation 

Content

Day 1: Fundamentals of Petrophysics & Introduction to Open Hole Logging 

Petrophysical Properties of Reservoir Rocks 

• Estimating shale volume 

• Understanding clay mineralogy and cation exchange capacity 

• Overview of siliciclastic and carbonate rocks 

• Concepts of grain packing: simple cubic, hexagonal, and rhombohedral 

• Types of porosity, including secondary porosity 

• Principles of permeability 

• Common matrix minerals and their properties 

• Fundamentals of resistivity and saturation 

• Introduction to Archie’s and Waxman-Smits models 

• Identifying movable oil 

• Basics of reserves estimation and Estimated Ultimate Recovery (EUR) 

Introduction to Open Hole Logging 

• Classification of boreholes 

• Overview of log types 

• Key applications of well logs 

• Open hole logging 

• Cased hole logging 

• Environmental influences and correction methods 

• Common sources of logging uncertainty 

Day 2: Caliper and Spontaneous Potential (SP) Logging 

Caliper Logging 

• Main applications in log analysis 

• Physics underlying caliper measurements 

• Tool design and recent advancements 

• Key strengths and limitations 

• Commonly used measurement terms 

• Interpretation techniques and case examples 

• Factors affecting caliper responses 

• Quality control and data reliability 

Spontaneous Potential (SP) Logging 

• Role of electrolytes in SP logging 

• Physical principles 

• Streaming potential 

• Electrochemical potential 

• Applications in formation evaluation 

• Tool evolution and recent technologies 

• Depth of investigation 

• Advantages and limitations 

• Understanding Static Spontaneous Potential (SSP) 

• Environmental effects on SP curves: 

• Bed thickness 

• Borehole and invasion 

• Shale and hydrocarbon content 

• Correction techniques for environmental effects 

• Quality control checks 

• SP log interpretation methods 

Day 3: Gamma Ray and Density Log Interpretation 

Gamma Ray Logging 

• Key applications and interpretation insights 

• Tool types and current developments 

• Physics of gamma ray detection 

• Depth of investigation 

• Strengths and limitations 

• Common terminology and units 

• Effects of environmental conditions 

• Correction techniques 

• Quality control procedures 

• Practical interpretation strategies 

Density Logging 

• Applications in lithology and porosity analysis 

• Tool types and recent enhancements 

• Physics of measurement: 

• Bulk density (RHOB) 

• Photoelectric factor (PEF) 

• Investigation volume 

• Benefits and constraints 

• Common measurement terminology 

• Secondary readings (e.g., caliper integration) 

• Environmental influences 

• Correction methods 

• Data validation and QC 

• Interpretation techniques and examples 

Day 4: Neutron, Sonic, and Resistivity Measurements 

Neutron Logging 

• Main uses in porosity estimation 

• Tool technologies: GRN, SNP, and CNL 

• Physics of neutron interactions 

• Investigation depth 

• Pros and cons of neutron logs 

• Key terminology 

• Environmental effects and correction methods 

• Quality control steps 

• Interpretation principles 

Sonic Logging 

• Applications in formation evaluation and geomechanics 

• Tool configurations and recent innovations 

• Physics of sound wave propagation 

• Volume of investigation 

• Strengths and limitations 

• Interpretation terminology 

• Environmental influences and corrections 

• QC procedures 

• Interpretation practices 

Day 5: Advanced Resistivity Logging & Cased Hole Techniques 

Resistivity Logging 

Induction Logging 

• Typical applications and formation suitability 

• Tool technologies and new developments 

• Basic measurement physics 

• Investigation radius 

• Key advantages and drawbacks 

• Environmental influences 

• Correction approaches 

• Quality control 

Laterolog Logging 

• Application domains and comparison with induction tools 

• Tool structure and advancements 

• Physics of current flow in boreholes 

• Volume of investigation 

• Limitations and benefits 

• Environmental factors and corrections 

• QC protocols 

Microresistivity (Rxo) Logging 

• Applications in invasion profile analysis 

• Tool features and measurement principles 

• Depth of investigation 

• Pros and cons 

• Environmental effects and corrections 

• Quality control steps 

Resistivity Log Interpretation 

• Techniques for formation evaluation using resistivity data 

Cased Hole Logging & Cement Evaluation 

Cased Hole Logging Overview 

• Environments and use cases 

• Measurement types specific to cased holes 

• Shared data across open and cased hole logging 

Cement Evaluation Techniques 

• Cement Bond Log (CBL) and Variable Density Log (VDL) 

• Ultrasonic pulse-echo and imaging tools 

• Cement Evaluation Tool (CET) measurements 

• High-resolution ultrasonic imaging 

Tool Selection for Cased Hole Logging 

• Criteria for selecting appropriate tools based on well conditions and objectives 

Certificate

TRAINIT ACADEMY will award an internationally recognized certificate(s) for each delegate on completion of training. 

Methodology

The training course will be highly participatory and the course leader will present, guide and facilitate learning, using a range of methods including formal presentation, discussions, sector-specific case studies and exercises.? Above all, the course leader will make extensive use of real-life case examples in which he has been personally involved. You will also be encouraged to raise your own questions and to share in the development of the right answers using your own analysis and experiences.  Tests of multiple-choice type will be made available on daily basis to examine the effectiveness of delivering the course.

• 30% Lectures  

• 30% Workshops and work presentation 

• 20% Case studies & Practical Exercises 

• 10% Role Play 

• 10% Videos, Software or Simulators (as applicable) & General Discussions 

Fees

£5,750 per Delegate. This rate includes participant’s manual, Hand-Outs, lunch, coffee/tea on arrival, morning & afternoon of each day.