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Oil Rig Drill Bit 17 Inch PDC Drill Bit of API Spec Bit
1. Description :
Steel is the opposite of matrix 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.
2. PDC Drill Bit Specification
| SPECIFICATION | |
| Size : | 17 " (431.8mm) |
| Drill Body Type : | Steel Body |
| Blades Quantity : | 7 |
| Nozzles Quantity : | 11 |
| API Connection (in) : | 7-5/8" REG |
| Gauge Length (In): | 3 |
| OPERATIONAL PARAMETERS | |
| Weight on Bit (KN): | 67- 200 KN |
| RPM Range(Rotary): | 100-DTH |
| Flow Rate(lps): | 57- 76 lps |
| Make-Up Torque(KN): | 81 - 92 KN |
3. PDC Drill Bit Profile
4. PDC Drill Bit Cutters
Polycrystalline Diamond Composite (PDC) cutters of PDC 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
PDC Drill bit's 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. PDC Matrix Body
Matrix of PDC drill bit is a very hard, rather brittle complex material containing tungsten carbide grains bonded with a softer, tougher, metallic binder.
The hardness of a matrix-body PDC has the benefit of not being susceptible to abrasion and erosion. It is effective in tolerating high compressive loads, but, compared with steel, has low resistance to impact loading.
Matrix-body PDC bits are relatively diverse, because matrix is a compounded material.
In environments in which body erosion is likely to cause a bit to fail, matrix-body PDC are the preference over steel-body bits. For diamond-impregnated bits, only matrix-body construction can be used.
