API Spec Diamond Drilling Tool 13-1/4 " Oil Rock PDC Drill Bit
1 . Descriptions:
When choosing a PDC drill bit, it is crucial to evaluate the
formation beforehand. For hard formations, opting for a PDC drill
bit is a wise decision as it can enhance cutter performance and
save costs. However, for soft formations, alternative drill bits
should be considered. It's important to note that PDC drill bits
generally have a higher price compared to tricone or hammer bits
due to their composition of tungsten carbide and diamond materials.
Therefore, it is essential to have a good understanding of PDC
drill bits before making a selection.
The performance of a PDC drill bit depends on various factors,
including:
- PDC Drill Bit Body Material
- Density of the PDC Drill Bit Cutter
- Size or Type of the PDC Drill Bit Cutter
- Profile of the PDC Drill Bit
Considering these factors and evaluating the specific formation
characteristics, operators can make informed decisions
2. PDC Drill Bit Specification
All PDC drill bit sepcification ,the chart provides a visual
representation of how drill bit specifications can be tailored for
the formation types .
| SPECIFICATION |
| Size : | 13 - 1/4 "(91.88mm) |
| Drill Body Type : | Steel Body |
| Blades Quantity : | 5 |
| Nozzles Quantity : | 11 |
| API Connection (in) : | 6-5/8" REG |
| Gauge Length (In): | 5 |
| OPERATIONAL PARAMETERS |
| Weight on Bit (KN): | 67-200 |
| RPM Range(Rotary): | 100 - DHM |
| Flow Rate(lps): | 57 - 75 LPM |
| Make-Up Torque(KN): | 81 -92 KN.M |
3 . PDC Bit profile
4 . PDC Drill Bit Cutters
To achieve higher rates of penetration (ROP) and improved wear
resistance, it is crucial to optimize the design and
characteristics of the PDC cutters. PDC cutters with lower thermal
degradation and greater thermal stability tend to deliver superior
performance. These properties enable the cutters to withstand the
extreme temperature fluctuations encountered during drilling
operations.
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 and manufacutre process
Steel body of PDC Drill Bit 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.
