Saturday, September 17, 2016

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Drilling bit:types-uses-advantages

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Drilling bit:types uses advantages

The drill bit is very important component in the drill string and are 
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

Drilling bit:types-uses-advantages
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


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


Drilling bit:types-uses-advantages


Used with high hardness rock 

More effective but high cost

PDC

Drilling bit:types-uses-advantages

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
Drag Bits
Roller Cone Drilling Bits
Diamond Drilling Bits







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