Oil & Gas Training
and Competency Development

Discipline Petrophysics
LevelSkill
Duration5 Days
Delivery Mechanism Classroom
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Openhole and Cased Hole Data Acquisition and Interpretation

This course is covers the whole range of Open Hole, Cased Hole and Production logging tools and their applications. This is a wide ranging course that effectively covers all the logging techniques both Open Hole and Cased hole. The course starts with an overview of the reservoir rock properties and reservoir fluids. This is an essential factor as a background to the various logging techniques and their interpretations. Open hole logging tool principles will also be presented. This is an important step to understanding and applying open hole log interpretations and log quality control. Log interpretations will cover quick look interpretations and interpretations in complex shale bearing formations. Cased hole logging will also be presented in two parts.

The first part will deal with Well Integrity covering Cement Evaluation, Corrosion Monitoring and Leak Detections in Casings and tubings. The second part will cover water saturation monitoring behind the casing. The second part will cover tools such as Pulsed Neutron Logging, Carbon/Oxygen (C/O) logging and Cased Hole Formation Resistivity. Production Logging will be reviewed next. This will cover the new technology tools such as Optical Sensors (gas hold up), Electric Sensors (Water Hold-up) and the FloScan tool (Casing Cross-sectional coverage). These tools are a prerequisite for production log evaluations in deviated and horizontal wells. Production log evaluation will also be made in two-phase and three-phase flow regimes. Log Quality Control is reviewed for all the tools and is reflected in the quality of all the interpretations. There will be an interpretation workshop at the end of each section using real log data. The participants will be divided into teams of 3-4 participants and will work together on the interpretation process. This will promote team work and knowledge sharing.

  • Agenda
  • Audience
  • Prerequisites
  • Agenda

    Day 1

    • Basics of Logging
    • Reservoir Rock Properties
    • Reservoir Fluids
    • Open-Hole Logging
    • Logging Tools’ Principles
    • An outline of the logging tools principles
    • Nuclear-Tools; Density, Neutron Logs Acoustic Logging
    • Resistivity Logging: Shallow and Deep reading Resistivity Logs.
    • Nuclear Magnetic Resonance (NMR)

    Day 2

    • Open Hole Log Interpretations
    • Shale Evaluation
    • Shale effects on evaluation of Sw
    • Quick Look Interpretations Interpretations in Shaly Formations
    • The Dual Water Model Open Hole Log Interpretation Workshop

    Day 3

    • Well Integrity
    • The Cementing Process CBL – VDL (CBL for average Casing to cement bond & VDL for Cement to formation bond)
    • Ultrasonic (fine azimuthal measurements for differentiation between micro annulus & channelling)
    • SCMT for average & azimuthal cement bond below production tubing without killing well.
    • Isolation Scanner application to evaluate to contaminated cement and light weight cement and imaging of single and double casings.
    • Cement Evaluation Workshop
    • Casing Corrosion Corrosion Principle- Corrosion Mechanisms
    • Corrosion Logging: Ultrasonic, Multi-Finger Calipers, Electromagnetic (ETT) Casing Leak Detection
    • Casing Corrosion Workshop

    Day 4

    • Reservoir Monitoring
    • Basics of Nuclear physics used in Reservoir Monitoring
    • Inelastic Capture: C/O ratios used to calculate SW
    • Pulsed Neutron Capture: Neutron Capture mode used to obtain Water saturation
    • CHFR: Cased Hole Formation Resistivity Reservoir Monitoring Workshop
    • Production Logging
    • Production Logging Tools
    • Production Logging Tool types Optical Sensors Electric Sensors Flowmeters FloScan Imager

    Day 5

    • Production Log
    • Interpretations Estimating fluid hold-ups: Water Hold-up, Oil hold-up and gas-hold-up
    • Two Phase Flow
    • Three Phase Flow
    • Production Logging Workshop
  • Audience

    The workshop is for technical personnel that are involved of all aspects cased hole, open hole and production log evaluations. This covers all branches of the geosciences. Personnel that can be included in this category are Production Technologists, Reservoir engineers, Petrophysicists, Geologists and Geophysicists. Log interpretations, both in open hole and cased hole, has applications to all branches and disciplines of the oil and gas industry. The workshop will also benefit geoscientists that are newcomers to the oil and gas industry. It will provide a foundation for future reference. The course package will serve as a reference manual for future application. The course will provide all the necessary basics for familiarizing the participants will all the new technology that has emerged in recent years to address logging challenges mainly in horizontal wells.

  • Prerequisites

    The workshop is for technical personnel that are involved of all aspects cased hole, open hole and production log evaluations. This covers all branches of the geosciences. Personnel that can be included in this category are Production Technologists, Reservoir engineers, Petrophysicists, Geologists and Geophysicists. Log interpretations, both in open hole and cased hole, has applications to all branches and disciplines of the oil and gas industry

  • Prerequisites

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