ABOUT COURSE

COURSE DESCRIPTION

This course is designed to quickly review the essentials of petrophysics and wellbore environment needed for well log interpretation. The physics behind the standard and specialized tools used in geological well logging will be covered. The nonuniqueness and scale of log based measurements are important considerations in seek consistency among the varierty of measurements. The qualitative physical interpretations of logs for geological properties and textures and reservoir parameters are described.

COURSE

1. INTRODUCTION AND BOREHOLE ENVIRONMENT

• The in-situ conditions found during well logging
• Stresses and temperatures within the earth, overpressure
• Petrophysical properties, porosity, permeability, capillary pressure.
• Elastic moduli, velocities, resistivity

2. DEPOSITIONAL ENVIRONMENTS

• Structural controls, tectonics
• Traps and reservoirs

3. PETROPHYSICAL PROPERTIES AND EMPIRICISM

• Petrophysical properties, porosity, permeability, capillary pressure.
• Elastic moduli, velocities, resistivity
• Archie’s Laws
• Vshale calculation

4. BRIEF HISTORY AND EVOLUTION OF LOGGING

5. STANDARD LOGGING TOOLS

6. STANDARD INTERPRETATIONAL METHODS

• Correlations
• Log porosities
• Depth Shifting
• Invasion-damage

7. ADVANCED PETROPHYSICAL PROPERTIES

• NMR and capillary pressure, principles
• NMR and capillary pressure measurements
• Fluid distributions
• Log based permeability estimation

8. SONICS

• Compressional and shear velocities
• Relationships to moduli
• Sonic porosity
• Relation between velocities, saturation, composition, porosity and fluids
• Effective Pressure Law
• Pore pressure prediction

9. SPECIALTY LOGS

• Dipole, Sonic Imager
• NMR
• FMS/FMI/UBI/CBL

10. APPLICATIONS

• Fractures
• Anisotropy, stress
• Sequences
• Seismic attributes

11. UNCONVENTIONAL RESERVOIRS

• Logging considerations
• Log responses

12. OVERVIEW

• Summary of most important concepts