Page 6 - Well Logging and Formation Evaluation

CONTENTS

Introduction ix

1 Basics 1
1.1 Terminology 1
1.2 Basic Log Types 3
1.3 Logging Contracts 9
1.4 Preparing a Logging Programme 11
1.5 Operational Decisions 14
1.6 Coring 16
1.7 Wellsite Mud Logging 21
1.8 Testing/Production Issues 24

2 Quicklook Log Interpretation 29
2.1 Basic Quality Control 29
2.2 Identifying the Reservoir 30
2.3 Identifying the Fluid Type and Contacts 32
2.4 Calculating the Porosity 34
2.5 Calculating Hydrocarbon Saturation 37
2.6 Presenting the Results 40
2.7 Pressure/Sampling 42
2.8 Permeability Determination 45
3 Full Interpretation 49
3.1 Net Sand Definition 49
3.2 Porosity Calculation 51
3.3 Archie Saturation 53
3.4 Permeability 54

4 Saturation/Height Analysis 59
4.1 Core Capillary Pressure Analysis 60
4.2 Log-Derived Functions 64

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