Oil Well Drill Bit 12-1/2 Inch 6 Blades Fixed Cutter PDC Rock Bit Of API Spec
1 . Descriptions:
Polycrystalline diamond compacts (PDC ) bit in the Oil and Gas Industry PDC bits get their name from the polycrystalline diamond compacts used for their cutting structure. A PDC bit is a type of fixed cutter drill bit which has no moving parts; the cutting structures and bit body rotate as one part.
What factors will effect the PDC drill bit function :
- PDC Drill Bit Body material
- PDC Drill Bit Cutter density
- PDC Drill Bit Cutter size or type
- PDC Drill Bit Bit profile
- PDC Drill Bit Blades of Cutter
2. Specification:
| SPECIFICATION |
| Size : | 12-1/2 inch (317.5mm) |
| Drill Body Type : | Steel Body |
| Blades Quantity : | 6 |
| Nozzles Quantity : | 9 |
| API Connection (in) : | 6-5/8" REG |
| Gauge Length (In): | 3 |
| OPERATIONAL PARAMETERS |
| Weight on Bit (KN): | 80-178 |
| RPM Range(Rotary): | 100- DHM |
| Flow Rate(lps): | 48-57 LPM |
| Make-Up Torque(KN): | 38- 43KN.M |
3 . PDC Drill Bit profile
4 . PDC Drill Bit Cutters
Polycrystalline Diamond Composite (PDC) cutters are the main point of contact for a drill bit. PDC 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.
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 of PDC Drill Bits
Steel body 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.
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Oil Well Drill Bit 12-1/2 Inch 6 Blades Fixed Cutter PDC Rock Bit Of API spec Images
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