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E-170 - Quantitative Well Log Interpretation

  • Geoscientists and technicians having an experience in qualitative log interpretation and willing to perform quantitative reservoir evaluation. Participants should know the principles and applications of common wireline logging tools and must be used to perform a quicklook (lithology, porosity, Rw, Sw)
  • Geoscientists and technicians with some experience in qualitative log interpretation
Learning Objectives
  • To perform sound quality-control and environmental correction of logs, determine Rt, Rxo, Di
  • To evaluate shale content of reservoirs, apply shale and hydrocarbon corrections
  • To perform quantitative log interpretation in case of water and oil based mud, determine porosity, permeability, net sand, net reservoir and net pay characteristics
  • Course requires a good grasp of principles and applications of common wireline logging tools
Ways and means
  • Hand computations completed by sessions with a petrophysical software

Preparation for quantitative log interpretation 1 day
  • Petrophysical concepts and relationships
  • Quality control of the data
  • Determination of geological formations and reservoirs - Zonations
  • Environmental corrections of logs - Determination of Rt, Rxo, Di
  • Case studies n°1 & 2 (water and oil based muds)
Interpretation of clean formations 1 day
  • Determination of fluid contacts (WOC, GOC)
  • Determination of matrix and fluid parameters, Rw (SP, Ratio, Rwa)
  • Determination of lithology, porosity, fluid type, water and hydrocarbon saturations
  • Cross plots techniques: N-D-S, Pe-RHOB, K-Th, etc.
  • Case studies n°1 & 2
Quantitative log interpretation of shaly formations (deterministic approach) 2.5 days
  • Influence of shale on logging tool response - Introduction to complex lithology - D-N crossplot
  • Determination of shale parameters, shale content Vsh and effective porosity
  • Hydrocarbon effects on logs and hydrocarbon correction
  • Determination of water and hydrocarbon saturations (various equations)
  • Comparison of porosity and permeability results to core data (PHI-K relationship and SCAL)
  • Determination of net sand, net reservoir and net pay thicknesses and associated characteristics (Vsh, H, Phie, So)
  • Case studies n°1 & 2: integration & interpretation of pressure tests and NMR data, if available
  • Cross-section between wells and comparison of interpretation results
Other interpretation methods 0.5 day
  • Introduction to the multi-mineral model and general optimization method
  • Case study n°3
2016 course calendar
Language Dates Location Tuition Register
Jun 06 - 10 Rueil €3,070 Online By email
Dec 05 - 09 Rueil €3,070 Online