Fundamentals of Formation Evaluation

Introduction

This GLOMACS Fundamentals of Formation Evaluation training seminar provides the participant with an understanding of the concepts of formation evaluation and well logging, an understanding of the physical principles of the tools used in logging, and an ability to characterize formations based on interpretation of well logs. More specifically, by the end of the training seminar, the participant will understand the properties of rocks and fluids that produce characteristic signals, be able to read and interpret a well log, be able to analyze the measurements and correction for environmental factors, and be able to interpret the log to discern porosity, water saturation, lithology, and hydrocarbon content. Core analysis studies required for determining saturation and rock properties such as porosity, permeability, relative permeability, wettability, capillary pressure and their application to reservoir studies will also be covered.

This GLOMACS training seminar will feature:

• Logging methods and interpretation techniques
• Discussions on conditions around the wellbore, effects on measurements of mud filtrate invasion
• The terminology of well logging, formation and fluid properties
• The physical principles involved in geophysical well logging
• Differentiation between gas, oil and water zones and shale estimation
• The Archie Equations in clean formations and estimation of water saturation
• Types of cross-plots, gas and shale effects
• Effects of shaliness and modified equations
• Core analysis and laboratory measurements of saturation and rock properties and their application to reservoir studies

Objectives

By the end of this GLOMACS training seminar, participants will be able to:

• Define the objectives of wireline logging and core analysis
• Outline the principles of conventional logging tools
• Explain the fundamental physics involved in various petrophysical measurements from cores to borehole logs
• Conduct log interpretation to determine petrophysical parameters and saturation for clean and shaly formations
• Describe core laboratory measurements of rock properties
• Apply rock properties to reservoir characterisation studies

Training Methodology

Our focus in this GLOMACS training seminar will be on the engineering tools, measurements and analyses that are required for obtaining reservoir rock properties. You will learn how well logs and core data are obtained. You will be required to work with well logs to build your own spreadsheet for the analyses. The daily workshops will be highly interactive and participative. This involves regular discussion of applications as well as review questions on each topic. Delegates are strongly encouraged to bring and analyse data from their own work domain. This adds greater relevancy to the content.