Well Diamond Drilling 5-7/8 Inch PDC Bit of Oilfield
1 . Descriptions:
PDC drill bits are known for their exceptional drilling efficiency
and extended lifespan. These characteristics enable them to
penetrate formations rapidly, resulting in reduced drilling time
and costs. Additionally, their durability minimizes the frequency
of replacement and maintenance requirements.
Suitable for various drilling methods such as rotary and vibration
drilling, PDC drill bits offer versatility and ease of operation.
They allow for flexibility in adjusting drilling parameters to
achieve desired drilling outcomes.
One notable advantage of PDC drill bits is their ability to
generate lower levels of noise compared to other types of drill
bits. This feature not only improves the working environment for
operators but also minimizes disturbances to the surrounding
environment. By prioritizing safety and environmental friendliness,
PDC drill bits contribute to sustainable drilling operations.
2. Specification:
| SPECIFICATION |
| Size : | 5-7/8" (149.2mm) |
| Drill Body Type : | Steel Body |
| Blades Quantity : | 5 |
| Nozzles Quantity : | 4 |
| API Connection (in) : | 3-1/2" REG |
| Gauge Length (In): | 2 |
| OPERATIONAL PARAMETERS |
| Weight on Bit (KN): | 9-67 |
| RPM Range(Rotary): | 180-250 |
| Flow Rate(lps): | 11- 15 LPM |
| Make-Up Torque(KN): | 9.5-12.2KN.M |
3 . PDC Bit of profile
4 . PDC Drill Bit Cutters
Polycrystalline Diamond Composite (PDC) cutters are the main point
of contact for a drill bit. PDC drill bits remove the rock mainly
by shearing.
The PDC cutters are exposed to a lot of heating and cooling down
the well, a very challenging environment.
PDC cutters that have lower thermal degradation and more thermal
stability generally achieve higher ROP and increased wear
resistance. So, optimizing the cutter is important.
Accorrding to the Api ,the cutter size are as below :
1 indicates PDC cutters > 24 mm in diameter.
2 represents cutters from 14 to 24 mm in diameter.
3 indicates PDC cutters < 14 but > 8 mm. 4 is used for
cutters < 8 mm.
5. PDC Drill Bit Nozzles
Drill bit nozzles help clear the cutting area and cool the
Polycrystalline Diamond Composite (PDC) cutters.
Effective placement of these nozzles along with the angle they are
set at plays a critical role on how efficient the drill bit
performs.
Fluid channels also complement nozzle placement to improve the
clearing of cuttings.
6. Steel Body PDC Bits manufacture process
Steel body of PDC Bit is the opposite of matrix body. It can of
withstanding high impact loads, but is softer and lacks protective
features. The strength and ductility of steel give steel-bit bodies
high impact resistance. Steel bodies are considerably stronger than
matrix bodies.
A beneficial feature of steel bits is that they can easily be
rebuilt a number of times because worn or damaged cutters can be
replaced rather easily. This is a particular advantage for
operators in low-cost drilling environments.
Polycrystalline diamond compact (PDC) drill bits are different than
roller cones in that they are one piece bodies with no moving
parts. The fixed-cutters shred the rock, so the bit is able to
operate with higher rotation speeds more efficiently in
consolidated formations.
