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Chaudhri - Oil Well Testing Handbook

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Contents

Foreword .........................................................................

xiii

Preface ............................................................................

xv

Acknowledgements .........................................................

xvii

1. Introduction ...........................................................

1

1.1Role of Oil Well Tests and Information in

Petroleum Industry ................................................

1

1.2History of Oil Well Testing and Uses of Oil Well

Tests ......................................................................

1

1.3Oil Well Test Data Acquisition, Analysis, and

Management ..........................................................

2

1.4Selecting Oil Wells for Optimum Stimulation

 

Treatment ..............................................................

2

1.5

Reservoir System Characterization Process ........

4

1.6

Scope and Objective .............................................

6

1.7

Organization ..........................................................

8

1.8

Unit’s, Systems and Conversions .........................

11

References .........................................................................

12

Additional Reading .............................................................

12

2.Fundamentals of Reservoir Oil Flow Analysis .... 13

2.1

Introduction ............................................................

13

2.2

Basic Fluid Flow Equations in Oil Reservoir .........

13

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vii

viii Contents

2.3

Numerical Models and Their Applications .............

26

2.4Unsteady-state Pressure Distribution Calculations

 

in Directional Well ..................................................

33

2.5

Summary ...............................................................

41

References .........................................................................

42

Additional Reading .............................................................

42

3.Transient Well Testing Methods for Horizontal

Oil Wells .................................................................

44

3.1

Introduction ............................................................

44

3.2

Flow Equations for Horizontal Oil Wells ................

44

3.3Horizontal Oil Well Performance during

Transient State ......................................................

84

3.4Transient Well Testing Techniques in Horizontal

 

Oil Wells .................................................................

86

3.5

Flow Time Equations and Solutions ......................

88

3.6Pressure Response Equations and Methods of

Analysis ..................................................................

95

3.7Horizontal Well Response and Normalized

 

Pressure Derivative ...............................................

103

3.8

Effects of Wellbore Storage ...................................

104

3.9

Summary ...............................................................

104

References .........................................................................

105

Additional Reading .............................................................

106

4.Pressure Drawdown Testing Techniques for

Oil Wells .................................................................

107

4.1

Introduction ............................................................

107

4.2Pressure-time History for Constant-rate

Drawdown Test ......................................................

108

4.3Transient Analysis – Infinite-acting Reservoirs ..... 108

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