Drilling bit:types uses advantages
The drill bit is a very important component in the drill string and are
selected according to the formation to be drilled and cost
selected according to the formation to be drilled and cost
The bit performance is depend on several operating parameters such
(Weight on bit (WOB
(Revolution per minute(RPM
Mud properties and hydraulic efficiency
TYPE OF BITS AND USES
 |
| TYPE OF BITS |
Drag Bits
Roller Cone Drilling Bits
Diamond Drilling Bits
Drag Bits uses advantages
Drag bits is the first bits used in rotary drilling but are no longer in common use this type of bits applied at high RPM and low WOB
The decline in the use of drag bits was due to
The introduction of roller cone bits, which could drill soft formations more efficiently
Used with soft formation but limited use with hard formation
If too much WOB was applied, excessive torque led to bit failure or drill pipe failure
Roller Cone Drilling Bits is the most common type of bits used in the world becouse good work and low cost when Compare with diamond drilling bits
Advantage
Improved cleaning action by using jet nozzles
Used with hard and soft formation
Less cost Compare with diamond drilling bits
Used with high hardness rock
More effective but high cost
A new generation of diamond bits known as polycrystalline diamond compact (PDC) bits
PDC bits have been run very successfully in many areas around the world. They have been particularly successful (long bit runs and high
ROP) when run in combination with turbodrills and oil based mud.
TAGS
Drilling bit-TYPES OF BITS-USESOF BITS
Diamond Drilling Bits
Drag Bits uses advantages
Drag bits is the first bits used in rotary drilling but are no longer in common use this type of bits applied at high RPM and low WOB
The decline in the use of drag bits was due to
The introduction of roller cone bits, which could drill soft formations more efficiently
Used with soft formation but limited use with hard formation
If too much WOB was applied, excessive torque led to bit failure or drill pipe failure
Roller Cone Drilling Bits
Roller Cone Drilling Bits is the most common type of bits used in the world becouse good work and low cost when Compare with diamond drilling bits
Advantage
Improved cleaning action by using jet nozzles
Used with hard and soft formation
Less cost Compare with diamond drilling bits
Diamond drilling bits
Used with high hardness rock
More effective but high cost
PDC
A new generation of diamond bits known as polycrystalline diamond compact (PDC) bits
PDC bits have been run very successfully in many areas around the world. They have been particularly successful (long bit runs and high
ROP) when run in combination with turbodrills and oil based mud.
Drilling bit-TYPES OF BITS-USESOF BITS
Drag Bits
Roller Cone Drilling Bits
Diamond Drilling Bits
Diamond Drilling Bits