This book presents the fundamental principles of drilling en gineering, with the primary objective of making a good well using data that can be properly evaluated through geology, reservoir engineering, and management. It is written to assist the geologist, drilling engineer, reservoir engineer, and manager in performing their assignments. The topics are introduced at a level that should give a good basic understanding of the subject and encourage further investigation of specialized interests. Many organizations have separate departments, each per forming certain functions that can be done by several methods. The reentering of old areas, as the industry is doing today, particularly emphasizes the necessity of good holes, logs, casing design, and cement job. Proper planning and coordination can eliminate many mistakes, and I hope the topics discussed in this book will playa small part in the drilling of better wells. This book was developed using notes, comments, and ideas from a course I teach called "Drilling Engineering with Offshore Considerations." Some "rules of thumb" equations are used throughout, which have proven to be helpful when applied in the ix x / Preface proper perspective. The topics are presented in the proper order for carrying through the drilling of a well.

Applied Drilling Engineering presents engineering science fundamentals as well as examples of engineering applications involving those fundamentals.

The book clearly explains the concepts of the drilling engineering and presents the existing knowledge ranging from the history of drilling technology to well completion. This textbook takes on the difficult issue of sustainability in drilling engineering and tries to present the engineering terminologies in a clear manner so that the new hire, as well as the veteran driller, will be able to understand the drilling concepts with minimum effort.

Drilling technology has advanced immensely in the past 20 years. Directional drilling, rotary steerable drilling and other smart downhole techniques and tools have progressed past the typical vertical and horizontal well, allowing drilling engineers to design wells of complex geometry and extract energy resources from remote, untapped places. While technology continues to excel, there is a growing need for multidisciplinary information to assist in the design and planning of complex wells. To answer this need, Robello Samuel, with the help of Xiushan Liu, releases a necessary reference titled Advanced Drilling Engineering. Samuel and Liu's volume covers full understanding of elaborate drilling processes and engineering well design aspects. Starting with well trajectory and wellbore positioning, they explain well-path planning for directional and extended-reach wells. Other vital topics include collision avoidance, checking for proximity between neighboring wells, downhole survey tools plus MWD/LWD and through bit logging, and intelligent smart well technology, including downhole monitoring tools.