Trouble-Free Drilling
This book is intended to help drilling personnel improve
their understanding of the down hole mechanics of
drilling. The focus of this book is the physics of stuck
pipe.The mechanics of what causes stuck pipe is
explained in great detail.Warning signs, preventive
measures, and various freeing procedures are also
discussed.Some of this material is based on personal
observations and experiments and has never been
presented before.Most of the information, however, is
based on the hundreds of technical papers I researched
while writing this book.
The drilling industry has devoted a lot of effort to the
problem of stuck pipe in research facilities around the
world.The first technical paper on this subject was
written in 1937; today, the topic of stuck pipe appears
in more than 8,000 technical papers and
books.Unfortunately, most of the men and women working
on rigs are not even aware that this research
exists.This information is of no use if it does not
reach the people in the field.The primary goal of this
book is to get this information to rig-based engineers
and supervisors in an easy-to-understand format.
Table of Contents:
Chapter 1Stuck Pipe and
Other Unscheduled Events
Chapter 2Saving Money,
The Root of all Evil
Chapter 3Communication
and Morale
Chapter 4Problem Solving
Chapter 5Well Planning
Chapter 6Stuck Pipe
Mechanisms
Chapter 7Hole Cleaning
Hole Cleaning Efficiency in Vertical
Wells
Hole Cleaning Efficiency in Directional
Wells
Air and Foam Drilling
Summary
When to Expect Hole Cleaning Problems
Preventive Measures
Warning Signs
Freeing Procedures
Test your understanding of Hole
Cleaning
Chapter 8Well Bore
Instability
Rock Mechanics Terminology
Stresses Around the Well Bore
Factors Affecting Stability
Types of Failures
Determination of Stresses
Summary
When to Expect Shale Instability
Problems
Preventive Measures
Warning Signs
Freeing Procedures
Test your understanding of Wellbore
Instability
Chapter 9Differential
Sticking
The Mechanisms of Differential Sticking
Factors Influencing Differential
Sticking
Summary
When to Expect Differential Sticking
Preventive Measures
Warning Signs
Freeing Procedures
Test your knowledge of Differential
Sticking
Chapter 10Well Bore
Geometry
Doglegs
Keyseats
Stiff Assembly
Micro-Doglegs
Ledges
Squeezing Formations
Under-gauge Hole
Warning Signs, Prevention, and freeing
procedures
Chapter 11Drilling Trends
and Recorders
Trends
Mechanical vs. Computerized Charts
Trend Analysis and Pattern Recognition
Chapter 12Problems
Associated with Stuck Pipe
Chapter 13Tripping
Practices
Conclusion
Appendix AHole Cleaning
Charts (for wells with full pipe rotation)
Appendix BEquations
Appendix CVolume of fluid
in a horizontal tank
Appendix DConversion
Factors
Table of Figures
Index