Rotary Drill Bit

Well drilling is an important process for extracting
oil, natural gas, water, and mineral materials.
Opening wells requires boring through earth
formations, which requires specialized tools and
operation procedures. Rotary drilling, in which a
drill bit is used to crush the rock and penetrate
into the formation, is one of the main methods of
well drilling. Rotary cone bits are one of the main
types of drill bits used for rotary drilling. There
are two main problems encountered when drilling with
rotary cone bits. Excessive vibration can cause
damage to the entire system and can decrease
efficiency of the drilling process. Failure of the
bit s bearings and seals can also result in damage
to the bit and cessation of the drilling process. In
this book, a new design for rotary cone bits, with
the objective of improving overall drilling
performance, is presented. First, a new pattern for
distribution of inserts over the cone is presented,
which results in reduced vibration of the
drillstring. Second a new design for the bit s
bearings is introduced that is capable of operating
in harsh environments.

Autorentext
Omid Aminfar is currently a research engineer at the University of Waterloo. He has a MASc degree in mechanical engineering from the University of Waterloo (Canada). Amir Khajepour is a professor at the University of Waterloo who is the Canada Research Chair in Mechatronic Vehicle Systems.

Klappentext
Well drilling is an important process for extracting oil, natural gas, water, and mineral materials. Opening wells requires boring through earth formations, which requires specialized tools and operation procedures. Rotary drilling, in which a drill bit is used to crush the rock and penetrate into the formation, is one of the main methods of well drilling. Rotary cone bits are one of the main types of drill bits used for rotary drilling. There are two main problems encountered when drilling with rotary cone bits. Excessive vibration can cause damage to the entire system and can decrease efficiency of the drilling process. Failure of the bit's bearings and seals can also result in damage to the bit and cessation of the drilling process. In this book, a new design for rotary cone bits, with the objective of improving overall drilling performance, is presented. First, a new pattern for distribution of inserts over the cone is presented, which results in reduced vibration of the drillstring. Second a new design for the bit's bearings is introduced that is capable of operating in harsh environments.