Derived from conventional air drilling, underbalanced drilling is increasingly necessary to meet today's energy and drilling needs. While more costly and extreme, underbalanced drilling can minimize pressure within the formation, increase drilling rate of penetration, reduce formation damage and lost circulation, making mature reservoirs once again viable and more productive. To further explain this essential drilling procedure, the editors have compiled a handbook perfect for the drilling supervisor. Written under the auspices of the IADC Technical Publications Committee, this book contains many great features and contributions including:
Real case studies shared by major service companies to give the reader guidelines on what might happen in actual operations Questions and answers at the end of the chapters for upcoming engineers to test their knowledge Common procedures, typical and special equipment involved, and most importantly, the limits and challenges that still surround this technology
Content:
Front Matter
• Biographies
• Preface
• Table of Contents
1. Introduction
2. Flow Drilling: Underbalance Drilling with Liquid Single-Phase Systems
3. Gaseated Fluids (Gas-Liquid Mixtures)
4. Foam Drilling
5. Air and Gas Drilling (Drilling Dry and with Mist)
6. Snubbing and Underbalanced Drilling
7. Mud Cap Drilling in Fractured Formations
8. Underbalanced Liner Drilling
9. Coiled Tubing and Underbalanced Drilling
10. Gases Used in Underbalanced Drilling
11. Equipment and Equipment Integration
12. Flaring
13. Corrosion in Drillpipe and Casing
Index