Page 7 - The Geological Interpretation of Well Logs

CONTENTS

Chapter 1 Introduction
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1.1 Well logs — a definition
1.2 Well logs — the necessity
1.3. Wireline logs — the making AAW
1.4 Log runs
1.5 Log presentations
1.6 LWD logs (logging while drilling)
1.7 The logging companies cos)
1.8 Weill log interpretation and uses
1.9 This book — content and aims CO

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Chapter 2 The logging environment
2.1 Introduction
2.2 The pressure environments of borehole logging and invasion
2.3 Temperature environment of borehole logging 12
2.4 Logging tool capabilities
2.5 Borehole depth measurement 18
2.6 Conclusion 18

Chapter 3 Temperature logging 19
3.1 Geotemperatures 19
3.2 Borehole temperature measurement 19
3.3. True formation temperatures (BHT corrections) 20
3.4 Temperature log uses 23
Chapter 4 Caliper logs 26
4.1 Mechanical calipers — the tools 26
4.2 Log presentations 27
4.3 Simple, two-arm, caliper interpretation 28
44 Four-arm caliper interpretation 30

Chapter 5 Self-potential or SP logs 33
5.1 Generalities 33
5.2 Principles of measurement 33
5.3 Log characteristics 37
5.4 Quantitative uses 37
5,5 Qualitative uses 39

Chapter 6 Resistivity and conductivity logs 42
6.1 Generalities 42
6.2 Theoretical considerations 43
6.3. Zones of invasion and resistivity 46
6.4 Resistivity tools 50
6.5 Induction tools 52
6.6 Log characteristics 54
6.7 Quantitative uses of the resistivity logs 56
6.8 Qualitative uses 58