Open Hole Log Interpretation


3rd September 2018

7th September 2018

In Collaboration with Esanda Engineering




Course Fee


Course Overview

The course will introduce the participants to the basics of Petrophysics, and Open-hole Log Analysis and Formation Evaluation, which is one of the basic disciplines in petroleum exploration and production.

Who is it for?

  • Exploration Geologists

  • Production Geologists

  • Exploration Managers

  • Well-site Geologists

  • Operations Geologists

  • Geophysicists

  • Petrophysicists

  • Well Data Managers

  • Geotechnicians

Course Objectives

  • To undergo a review of open-hole logging tools as well as the measurements made by the logging tools.

  • To undertake the transformation of the measured data into useful reservoir parameters such as porosity, permeability, water saturation and reserve estimations.

  • To understand the link or relation between Petrophysics, Seismic interpretation, Seismic Reservoir Characterization and Reservoir Modelling.

Course Outline

Introduction and review of logging methods and tools

  • Petrophysical properties of reservoirs

  • Reservoir rocks and types

  • Porosity ranges

  • Permeability (absolute, relative)

  • Capillary pressure (Pc)

  • Archie method

  • Dual-water method

  • Fundamentals of Formation Evaluation

  • The borehole and its environment

  • Open-hole logging Methods

  • Cased-hole logging methods

  • Electric and electromagnetic methods - Resistivity, Conductivity, Induction

  • Spontaneous Potential (SP logs)

  • Acoustic, Density & Neutron methods

  • Petrophysical Imaging methods

  • LWD and MWD techniques

  • Dip-meter methods

  • Gamma Ray (GR methods)

  • Coring and core investigations

  • Core-to-log data integration

  • Log analysis & Formation Evaluation

  • Reservoir characterization

Basic interpretation methods

  • Clay / Shale type determination

  • Volume of Shale from Sonic, Density & Neutron logs

  • Porosity from Sonic, Density, Neutron logs

  • Water saturation from Resistivity

  • Water saturation from SP logs

  • Pitfalls of formation Evaluation

  • Permeable zones (qualitative interpretation)

Advanced interpretation methods

  • Combined determination of porosity and rock composition

  • Logging charts

  • Cross-plot methods

  • Introduction shaly-sand interpretation

  • Fractured reservoir characterization

  • Saturation Determination

  • Movable fluids determination

  • Permeability estimation

  • Thin-bed evaluation