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Well Logging & Qualitative Log Interpretation

LOGF-EN-P
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Who should attend?

  • This course provides an overview of main logging tools and proposes an insight into fundamental well log interpretation for reservoir identification and characterization.
Public :
  • Geoscientists and other E&P technicians and engineers, interested in wireline log acquisition and well-log interpretation.

Level :Awareness

Prerequisite :
  • No pre-requisistes are necessary to follow this course.

Course Content

  • BASIC INTERPRETATION CONCEPTS & WIRELINE LOG RECORDING - Duration : 1 Day

      • Foundational concepts. Reservoir petrophysics (lithology, porosity, resistivity, saturation) and fluid properties.
      • Environment of measurement (borehole, invasion profile) and related parameters.
      • Fundamental equations (Archie formula) for log interpretation in clean formations.
      • Mud logging, measurements during drilling, coring and wireline logging techniques. Applications.
      • Well logs examples.

  • REVIEW OF LOG MEASUREMENTS & APPLICATIONS - Duration : 1.25 Days

      • Wireline logging operations and wireline logs.
      • Logging-While-Drilling techniques and LWD logs.
      • Well logs: header, calibration, parameters, repeat section, main log.
      • Wireline logging tools: principle and applications, limitations, calibration, environmental corrections and quality control:
      • Caliper, gamma ray and GR spectrometry, Spontaneous Potential.
      • Resistivity (induction, laterolog) and micro-resistivity measurements.
      • Porosity and lithology measurements: nuclear (litho-density, neutron) and acoustic logging (sonic).

  • “QUICK-LOOK” INTERPRETATION - Duration : 2.5 Days

      • Qualitative well-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 and neutron logs.
      • Determination of water resistivity Rw (SP, Ratio, Rwa), formation resistivity (Rt, Rxo) and flushed zone diameter.
      • Determination of lithology, porosity, water and hydrocarbon types and saturations.
      • Cross-plot techniques with density, neutron, sonic and other logs (Pe, K, Th, etc.).
      • Shale effects on logs: introduction to shaly and complex lithology formations.

  • PRESSURE MEASUREMENTS & FLUID SAMPLING - Duration : 0.25 Day

      • Pressure measurements and fluid sampling: operation and applications.
      • Pressure analysis: determination of fluid contacts, fluid gradient and fluid density.

  • NMR, DIPMETER & BOREHOLE IMAGING TECHNIQUES - Duration : 0.25 Day

      • NMR log (Nuclear Magnetic Resonance): principle and applications.
      • Dipmeter and borehole imaging tools: principle and applications.

Learning Objectives

  • Attendees will be able to implement the following skills:
  • Acquire the concepts of log interpretation (Archie formula, invasion),
  • Review mud logging, coring and wireline logging techniques,
  • Perform a quick-look interpretation to characterize reservoirs: fluid contacts, lithology, porosity, saturation.

Ways & Means

  • Interactive presentations and exercises to build a lithology and fluid column.

Learning assessment

  • Knowledge assessment with multiple choice questions and open explanatory questions.

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Coordinator :IFP Training instructors, with expertise in the field and trained in modern teaching methods adapted to the specific needs of learners from the professional world.

To French entities : IFP Training is referenced to DataDock ; you may contact your OPCO about potential funding. Please contact our disabled persons referent to check the accessibility of this training program : referent.handicap@ifptraining.com