Oil & Gas Training
and Competency Development
Competency Management system SLB NEXT

Petrophysics, Quick Look and Log Quality Control

This course covers the following topics:

  • Geology of Carbonates and Clastics
  • Gamma Ray (GR) and Spontaneous Potential: Tool physics and applications to estimate clay volume, clay type and formation water salinities.
  • Porosity and Lithology: Density and Neutron tool physics and applications
  • Acoustics: Tool physics and applications for rock mechanics, well bore stability, and secondary porosity
  • Resistivity Measurements: Tool physics of Shallow Rxo, Laterolog and Induction and High Technology resistivity tools.
  • Introduction to High Technology Tools: NMR, Borehole Imaging, Dielectric  and Wireline Formation Testing.
  • Interpretations: This covers the evaluation of:
    • Clay Volume (Vsh, Vcl),
    • Estimating the parameters of “m” and “n” in the Archie Equation,
    • Quick look techniques to estimate the oil/water, gas/water and oil/gas contacts, salinity estimations of formation water and filtrate water, and unmoved hydrocarbon zones
    • Estimation of water saturations in shaly-sands.

Workshops: 1-2 hours daily of workshop examples

Day 1
  • Reservoir Rock; Life of a well
  • Tool Conveyance, depth Control, filtrate Invasion profiling
  • Basics of Logging, Log Quality Control
Day 2
  • GR Spectroscopy
  • The Spontaneous Potential
  • Acoustic Log, secondary porosity, rock mechanical properties and wellbore stability
  • The density and photoelectric capture cross section
  • The Neutron Log, neutron spectroscopy and sigma neutron capture cross-section
Day 3
  • Density-Neutron applications for lithology, shale volume and effective and total porositiesBasics of Resistivity and the Archie Equation
  • The concept and applications of the Formation Factor (FF) as a variable –m emulator
  • Resistivity measurements in the invaded zone (Rxo)
  • Resistivity measurements in the uninvaded zone using Induction and Laterolog
  • The concept and applications of laterolog and induction array resistivity measurements
Day 4
  • Introduction to High Technology Tools
  • Dielectric measurements
  • Magnetic Resonance Imaging and its applications
  • Borehole imaging
Day 5
  • Interpretation overview of important petrophysics parameters
  • Estimating fluid salinities-Porosity-Lithology
  • Wettability and the saturation exponent (n)
  • Estimation of the volume of shale
  • Computing the values of Sw using different techniques in clean and shaly formations
Learning activity mix

This course will be suitable for all geoscientists and engineers who will benefit greatly from a strong foundation in petrophysics, logging tool physics and log interpretations. This course will also be particularly useful to all new hires who will be working in upstream domains. 

Currently there are no scheduled classes for this course.

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