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E-160 - Well Logging & Qualitative Log Interpretation

  • Geoscientists and other E&P professionals interested in log acquisition and interpretation
  • To provide an overview of main logging tools, and an insight into fundamentals of well log interpretation for reservoir identification and characterization
Learning Objectives
  • To acquire the concepts of log interpretation (Archie formula, invasion)
  • To review mud logging, coring and wireline logging techniques
  • To perform a quick-look interpretation to characterize reservoirs: fluid contacts, lithology, porosity, saturation
Ways and means
  • Interactive presentations and exercises to build a lithology and fluid column

Basic interpretation concepts 1 day
  • Definition of main reservoir petrophysical and fluid properties (lithology, porosity, resistivity, saturation)
  • Environment of measurement (borehole, invasion profile)
  • Fundamental equations (Archie formula) for log interpretation in clean formations
Review of log measurements and applications 1.25 days
  • Mud logging and coring techniques - Mud logs and use in log interpretation
  • Wireline logging operations and wireline logs
  • Logging While Drilling techniques and LWD logs
  • The log: header, calibrations, parameters, repeat section, main log
  • Wireline logging tools: principle and applications, limitation, calibration, log correction and quality control
  • Caliper, Gamma Ray and GR spectrometry, Spontaneous Potential
  • Resistivity (induction, laterolog) and Micro-resistivity measurements
  • Porosity & lithology measurements: nuclear (Litho-Density, Neutron) and acoustic logging (Sonic, Dipole sonic)
  • Case studies n°1 & 2
“Quicklook” Log interpretation 2 days
  • Qualitative log interpretation
  • Log responses in most common geological formations
  • Identification of reservoirs and fluid contacts (overlay technique: water and oil based mud cases)
  • Hydrocarbon effect on density & neutron logs
  • Determination of water resistivity Rw (SP, Ratio, Rwa) and formation resistivity (Rt, Rxo)
  • Determination of lithology, porosity, water and hydrocarbon saturations
  • Shale effects on logs: introduction to shaly and complex lithology formations
  • Cross-plot techniques with density, neutron, sonic and other logs (Pe, K, Th, etc.)
  • Case studies n°1, 2 & 3 (water & oil based muds, clastics & carbonates)
Pressure measurements and fluid sampling 0.5 day
  • Pressure measurements and fluid sampling: operation and applications
  • Determination of fluid contacts, fluid gradients and fluid densities
NMR, dipmeter and borehole imaging techniques 0.25 day
  • Nuclear Magnetic Resonance: principle and applications
  • Dipmeter and Borehole imaging tools: principle and applications
2016 course calendar
Language Dates Location Tuition Register
May 30 - Jun 03 Rueil €2,860 Online By email
Nov 28 - Dec 02 Rueil €2,860 Online