Air and Gas Drilling Manual, Fourth Edition: Applications for Oil, Gas and Geothermal Fluid Recovery Wells, and Specialized Construction Boreholes, and the History and Advent of the Directional DTH delivers the fundamentals and current methods needed for engineers and managers engaged in drilling operations. Packed with updates, this reference discusses the engineering modelling and planning aspects of underbalanced drilling, the impacts of technological advances in high angle and horizontal drilling, and the importance of new production from shale. in addition, an in-depth discussion is included on well control model planning considerations for completions, along with detailed calculation examples using Mathcad. This book will update the petroleum and drilling engineer with a much-needed reference to stay on top of drilling methods and new applications in today's operations. - Provides key drilling concepts and applications, including unconventional activity and directional well by gas drilling - Updated with new information and data on managed pressure drilling, foam drilling, and aerated fluid drilling - Includes practical appendices with Mathcad equation solutions

James Stanley is currently a Drilling Engineer, Instructor, and Training Advisor with Chevron. He has more than 35 years' worth of experience in both operating and service sectors and is recognized as a subject matter expert in well barrier design and well control requirements. He previously worked for Schlumberger, Weatherford, Crimson Energy Company LC, and Champlin Petroleum. He earned a BS in petroleum engineering from the University of Oklahoma and is active in SPE, AADE, and IADC, and issued three US patents.

1. Introduction, Calculation Programing and Unit Systems 2. Air and Gas versus Mud 3. Surface Equipment 4. Downhole Equipment 5. Compressors and Nitrogen Generators 6. Direct Circulation Models 7. Reverse Circulation Models 8. Air, Gas and Unstable Foam Drilling 9. Aerated Fluids Drilling 10. Stable Foam Drilling 11. Mathcad Field Example Comparisons Appendixes A. USCS and SI Unit Definitions and Conversions B. Average Annual Atmospheric Conditions C. Minimum Air Drilling Volumetric Flow Rates D. 11.1 Mathcad Directional DTH in Appalachian Region E. 11.2 Mathcad RC DHH Secant Borehole F. 11.3 Mathcad Underbalance Shallow Three Well Solution G. "Rules of Thumb" for Air and Gas Drilling