Image Log Analysis

Course Duration: 2–5 days, including lecture-based modules and hands-on exercises. Shorter version of course focuses on hands-on analysis in a more workshop format.

Who Should Attend: Development and exploration geologists, geophysicists, petrophysics and log analysts, reservoir and drilling engineers, managers, and technical personnel

Course Summary: Image logs represent a valuable but largely underutilized dataset. In addition to classic wireline image logs (electrical and ultrasonic acoustic), participants will be exposed to the latest image logging technology, including high-resolution LWD real-time images (gamma ray, density, PEF, electrical, propagation resistivity, and acoustic), as well as a number of conventional and unconventional interpretation and visualization techniques. Applications and data integration will include structural and stratigraphic/sedimentological interpretation including dip analysis, wellbore stability and geomechanics including common pitfalls of stress orientation analysis, geosteering and reservoir navigation aspects including thickness logs, and cement and casing evaluation. Using an applied “hands-on” approach, participants will be exposed to a diversity of world-wide case examples with complementary exercises, both of an individual and group nature.

You Will Learn To:

• Understand the available image log types and current state of technology
• Understand the fundamentals of dip determination and analysis
• Understand the application of image logs in structural and stratigraphic studies
• Understand the role of image logs in geomechanical and wellbore stability analysis
• Understand the benefits of azimuthal petrophysical analysis versus classic time-averaged logs
• Integrate image log data into multidisciplinary studies

Course Content:

• Welcome and Introduction
  • History of Well Imaging
• General Concepts
  • Image Log Development and Presentation, Tool Technology (Theory and Examples), and General Applications
• Image Log QC, Processing, and Artifacts
  • QC and Processing Aspects, and Examples of Common Image Log Artifacts
• Dip Determination
  • Types of Dip (True, Apparent, and Relative), Image Log Patterns, and Examples
• Visualization
  • Simple PowerPoint and Paper Copy Manipulations, Tube and 3D Displays, and Image Log Movies
• Structural Interpretation
  • Fractures, Faults, and Folds, Dipmeter Interpretation, and Data Integration
• Fracture Characterization
  • Fracture Types, Development of Fracture Model from Integrated Datasets, Natural versus Induced Fractures, Fracture Permeability or Seal, and Stylolites
• Wellbore Stability
  • Stress Conditions, Differential Stress around the Wellbore, Induced Tension Fractures, Breakout, and Wellbore Trajectory
• Stratigraphic/Sedimentologic Interpretation
  • Classic Dipmeter Examples, Microresistivity Curve Correlation, Sedimentological Aspects, Facies Analysis, and Thin Bed Analysis
• Reservoir Navigation and Horizontal Well Placement
  • Key Datasets, Reservoir Navigation, and Thickness Logs
• Azimuthal Petrophysical Analysis
  • Investigating petrophysical variations around the wellbore
• Casing and Cement Evaluation
  • Cased-Hole Application of Ultrasonic Imaging — Examination of Casing and Cement
• Practical Examples and Exercises interspersed throughout course

Course is designed from an applied standpoint, with numerous examples and hands-on exercises from the petroleum industry.