Large Drill Bit 17-1/2 Inch PDC Button Bit Of Rock Drilling Tools
1 . Descriptions:
PDC Drill bits is less weight and more RPMs. This well in the HDD industry is where most smaller rigs do not
have enough weight capability and tend to rotate too fast. PDC bits
also tend to run much smoother than hammers and tricones. A
smoother running bit is much easier on the rig itself.
A Polycrystalline Diamond Compact cutter is the heart and sole of a PDC drill bit. It makes up more
than 90% of all drill bits used today for mining, geothermal, oil
and gas drilling. What are the keys effected the PDC drill function
?
According to the International Association of Drilling Contractors
(IADC), the Fixed-cutter bit classification composed of four
characters that designate:
- PDC Drill Bit Body material
- PDC Drill Bit Cutter density
- PDC Drill Bit Cutter size or type
- PDC Drill Bit profile
All of our PDC Drill bits are fit for API standard and used in the
drilling Industry.
The PDC drill bits size 3~22inch with 3~9Blades are available. And
different classification cutter are optional according to your
budget .
2. PDC Drill Bit Specification:
| SPECIFICATION |
| Size : | 17 -1/2" (444.5mm) |
| Drill Body Type : | Steel Body |
| Blades Quantity : | 7 |
| Nozzles Quantity : | 10 |
| API Connection (in) : | 7 -5/8" REG |
| Gauge Length (In): | 3 |
| OPERATIONAL PARAMETERS |
| Weight on Bit (KN): | 166-198kN |
| RPM Range(Rotary): | 100-DHM |
| Flow Rate(lps): | 57-76 LPS |
| Make-Up Torque(KN): | 46 -54 KN.M |
3 . PDC Bit profile
4 . PDC Drill Bit Of Cutters
Polycrystalline Diamond Composite (PDC) cutters are the main point
of contact for a PDC drill bit. PDC Drill bits remove the rock
mainly by shearing. The PDC cutters of PDC Drill Bit 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.
5. PDC Drill Bit Nozzles
PDC 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
Steel body is the opposite of matrix body of PDC Drill Bit . 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.
