ABOUT THESE LECTURES
Covers calculation of shale volume, porosity, water saturation, permeability, and rock mechanical properties from modern well logs. These results are used to assist in creation of seismic models, synthetic seismograms, seismic inversion, VSP inversion, and AVO models. The final product may be an estimate of lithology, porosity, and possibly even fluid type.
 

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NARRATED SLIDE SHOW CONTENTS

LECTURE 1 - Introduction to Petrophysics

  • What is Integrated Petrophysics?

  • What is a Log?

  • Recording Logs at the Wellsite

  • What Do Logs Look Like?

  • What Logs Are Available?

  • What Answers Can We Get From Logs?

  • Uses of Log Analysis Answers

  • Some Real World Examples

LECTURE 2 - Logging Tool Theory 1

  • Electrical Survey

  • Spontaneous Potential

  • Induction Logs

  • Laterologs

  • Micrologs and Microlaterologs

  • Gamma Ray Logs

  • Caliper Logs

  • Thermal Decay Time Logs

LECTURE 3 - Logging Tool Theory 2

  • Sonic Logs

  • Density and PE Logs

  • Neutron Logs

  • Nuclear Magnetic Log

  • Elemental Capture Spectrography Log

LECTURE 4 - Petrophysical Concepts

  • The Basic Petrophysical Analysis Model

  • The Log Response Equation

  • Definitions Needed to Understand Petrophysics

  • Quicklook Analysis Rules

  • Archieís Laws

  • Exercises 0

LECTURE 5 - Visual Log Analysis

  • Visual Analysis Basics

  • Crainís Rules for Visual Log Analysis

  • Visual Analysis for Exercise 1

  • Rules for Picking Log Data

  • Picking Logs for Exercise 1

LECTURE 6 - Quantitative Log Analysis

  • Shale, Porosity, Water Saturation

  • Permeability

  • Cutoffs, Net Pay, Mappable Properties

  • Productivity and Reserves

  • Exercise 1

LECTURE 7 - Integrating Ground Truth

  • Case History - Exercise 1

  • Review Results for Exercise #1

  • Compare Results to Ground Truth

  • Integrate Logs, Cores, and Production History

  • Revise Log Analysis Picks and Parameters to Match Ground Truth - Calibration

LECTURE 8 - Lithology Analysis

  • Visual Analysis for Lithology

  • Compatible Scale Logs

  • Exercise 4

  • Quantitative Analysis for Lithology

  • 2- and 3- Mineral Models

  • Pickett Plots

  • Effect of Lithology on Water Saturation Parameters

LECTURE 9 - Alternate Porosity Models

  • Shale corrected sonic log model

  • Shale corrected density log model

  • Shale corrected neutron log model

  • Nuclear magnetic resonance porosity

  • Maximum porosity model

  • Water resistivity from DST or water catalog data

  • Exercise 2

  • Case History

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LECTURE 14 - Mechanical Properties

  • Mechanical Properties Basics

  • Elastic Constants Theory

  • Log Editing Basics

  • Calculating Mechanical Properties Of Rocks

  • Shear Modulus N

  • Poisson's Ratio PR

  • Bulk Modulus Kb

  • Bulk Compressibility Cb

  • Biot’s Constant Alpha

  • Young's Modulus Y 

  • Modulus of Compressibility Kc

  • Pore Compressibility Kp or Kf

  • Calibrating Dynamic to Static Constants

  • Case Histories

  • Exercise 14

LECTURE 21 - Seismic Petrophysics

  • Seismic Petrophysics Basics

  • Seismic Modeling

  • Log Modeling

  • Logs Used in Seismic Interpretation

  • The Shared-Earth Concept

  • Exercise 21

LECTURE 22 - Editing Logs for Seismic

  • Log Editing Concepts

  • Modeling Sonic and Density with Response Equation

  • Seismic Check Shots

  • Editing Sonic Logs With SRS and VSP Data

  • Modeling Sonic and Density Logs With Trend Data

  • Modeling Sonic and Density Logs From Resistivity

  • Modeling Sonic and Density Logs From Neutron and Gamma Ray

  • Modeling Sonic and Density Logs With Regression

  • Modeling the Sonic Log Response From Biot-Gassmann Equations

  • Gardnerís Model for Density from Sonic

  • Exercise 22

LECTURE 23 - Seismic Modeling

  • Seismic Modeling Basics

  • Step By Step Procedure for Modeling

  • Integrating the Sonic Log

  • Acoustic Impedance and Reflection Coefficients

  • Calculating Seismic Wavelets

  • Convolution of Wavelet & Reflection Coefficients

  • Case Histories: Synthetic Seismograms

  • Exercise 23

LECTURE 24 - Seismic Inversion, VSP, AVO

  • Seismic Attributes Basics

  • Seismic Inversion Procedures

  • Capturing Low Frequency Components

  • Displaying Seismic Inversion Traces

  • Case Histories: Seismic Inversion

  • Porosity/Lithology From Shear Seismic

  • Case Histories: Porosity/Lithology

  • Vertical Seismic Profile Concepts

  • Vertical Seismic Profiles On Wireline

  • Vertical Seismic Profiles While Drilling

  • Case Histories: Vertical Seismic Profiles

  • Amplitude Versus Offset (AVO)

  • Case Histories: Amplitude Versus Offset

  • Exercise 24

LECTURE 25 - Seismic Data Processing

  • Seismic Concepts for Non-Geophysicists

  • Seismic Data Acquisition

  • Seismic Velocity Analysis Techniques

  • Calculating Seismic Velocity From Logs

  • Calculating Interval Velocity From Seismic

  • Time to Depth Conversions

  • Seismic Velocity and Dipping Beds

  • Exercise 25 (Self Exam for Lectures 21 - 25)

 


 

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