The drill bit is a tool for cutting located in the bottom of the
drill string,
used to cut the geological formation during the process of
rotary drilling.TYE! "# DRILL BIT
The most commonly used to drill the reser$oirs are%
& Tricone bit& #i'ed cutter bit& !pecial drill
bit
TRI(")E DRILL BIT
Tricone drill bits ha$e * cones +ith much car$ed teeth or
Tungsten(arbide Inserts and the can be a lot of sies and hardness
according tothe pro$ided lithology.
#I-ED (TTER BIT
This are compact body, +ithout mobile parts, +ith natural
diamondsthat crush the formation by friction.
This drill bits are classi/ed into%
7/24/2019 The Drill Bit
2/2
& Drill bit of natural diamond& Thermally stable
diamonds drill bits& olycrystalline diamond compact drill
bit
!E(I0L DRILL BIT!
The special drill bits can be of 1 types% enlargers and
bicentrics, used for
operations such as e'panding the diameter of the hole.
