ABOUT THIS eBOOK
Covers topics needed for fracture location from conventional open hole and image logs, as well as calculation of fracture intensity, fracture porosity, fracture related porosity, matrix porosity, water saturation, and permeability. The use of dipmeter analysis and image logs as well as integration and calibration to core data is stressed.
 

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TABLE OF CONTENTS

Introduction to Fractured Reservoirs
1.00 Fractured Reservoir Basics

1.01 Definition of Fractures

1.02 Using Logs to Locate Fractures

1.03 Using Core Analysis to Locate Fractures

1.04 Other Methods for Fracture Location

1.05 Recommended Logging Program

 

Locating Fractures With Conventional Logs

2.00 Fracture Identification Basics

2.01 Fracture Identification From Resistivity Logs

2.02 Fracture Identification From SP Logs

2.03 Fracture Identification From Caliper Logs

2.04 Fracture Identification From Micro Resistivity Logs

2.05 Fracture Identification From Dipmeter Logs

2.06 Fracture Identification From Density, Neutron, PE Logs

2.07 Fracture Identification From Gamma Ray Logs

2.08 Fracture Identification From Temperature Logs

2.09 Fracture Identification From Sonic Logs

2.10 Fracture Identification From Sonic Waveform Logs

 

Locating Fractures With Image Logs

3.00 Fracture Identification From Resistivity Image Logs

3.01 Fracture Identification From Acoustic Image Logs

Case Histories

4.00 Classic Example

4.01 Austin Chalk Example

4.02 Fractured Shales

4.03 Vertical Fracture in Vertical Hole

4.04 Vertical Fracture in Horizontal Hole

 

Quantifying Fractuews

5.00 Log Overlays and Crossplots to Quantify Fractures

5.01 Calculating Permeability From Stoneley Attenuation

5.02 Calculating Formation Strength

5.03 Calculating Fracture Intensity (Crainís Method)

5.04 Calculating Fracture Intensity and Initial Flow Rate (Schaferís Method)

5.05 Calculating Fracture Porosity and Fracture Permeability from Fracture Aperture

 

Dual Porosity Model

6.00 Basic Resistivity Concepts in Fractured Reservoirs

6.01 The Double Porosity Model in Fractured Reservoirs

6.02 Water Saturation in the Double Porosity Model

 

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