Page 6 - Practical Well Planning and Drilling Manual

Front Matternew.qxd 1/24/05 11:43 AM Page vi

Practical Well Planning and Drilling Manual

1.4.14. Calculating for Buckling (N ) 81
b
1.4.15. Calculating Torsional Loads 84
1.4.16. Triaxial Stress Analysis 85
1.4.17. Design for Casing off Massive Salt Formations 86
1.4.18. Casing Properties and Other Considerations 87
1.4.19. Material Grades 87
1.4.20. Casing Connections 90
1.4.21. Casing and Liner Accessories 91
1.4.22. Wellheads: General Descriptions 96
1.4.23. Casing Design Criteria 98
1.4.24. References for Casing Design 98
1.5. Directional Design 107
1.5.1. Planning the Wellpath 108
1.5.2. Dogleg Severity Limits—Combined 110
Buildup and Turn Rate
1.5.3. BHA Performance Considerations 115
1.5.4. Horizontal Well Design Considerations 116
1.5.5. Multilateral Wellbores 118
1.5.6. Slant Rig Drilling 118
1.5.7. Targets and Wellpath 119

SECTION 2: WELL PROGRAMMING 121
2.1. Preliminary Work for the Drilling Program 123
2.1.1. Drilling Program Checklist 123
2.1.2. Technical Justification 130
2.1.3. Formatting the Drilling Program 132
2.1.4. Time Estimates 133
2.1.5. Cost Estimates 133
2.2. Well Control 145
2.2.1. Shallow Gas 145
2.2.2. Drilling with a BOP Stack 151
2.2.3. High Pressure, High Temperature Wells (HPHT) 153
2.2.4. Well Control in High-Angle and 155
Horizontal Wells
2.2.5. References for Well Control—Shallow Gas 156
2.3. Directional Planning 157
2.3.1. Downhole Tools Affecting Directional Control 157
2.3.2. Directional Measurement and Surveying 163
2.3.3. Kicking Off the Well 173
2.3.4. Drilling the Tangent Section 177
2.3.5. Dropping Hole Angle 178

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