PDC Cutters for Oil & Gas Drilling
UKing Diamond’s factory-direct HPHT sintered PDC cutters deliver superior wear resistance and impact toughness through advanced non-planar interfaces and optimized leaching technology, making them ideal for oil & gas drilling in hard, abrasive, and complex interbedded formations.
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Description
Geological Applications & Shearing Mechanism
Traditional roller cone bits break rocks through primitive crushing, which consumes immense energy and limits Rate of Penetration (ROP). Uking’s premium Oil & Gas PDC cutters revolutionize drilling dynamics by utilizing a highly efficient shearing and scraping action, achieving superior rock destruction metrics across volatile geological formations:
Soft to Medium Strata: Facilitates aggressive cutting edge exposure, enabling maximum ROP and ultra-smooth continuous chip evacuation.
Hard & Highly Abrasive Formations : Deploys high-density diamond matrix grids that withstand brutal friction without catastrophic thermal wear.
Complex Interceded Formations: Perfectly absorbs volatile cyclic loading and impact spikes when transitioning between varying rock hardness zones, preventing cutter micro-chipping.
Product Categorization & Technical Specs
| Product Line Grade | Core Engineering Focus | Thermal Stability Limit | Micro-Structural Profile | Primary Application Scenario |
| High-Impact Series | Maximum fracture toughness (TI/TTI) to resist severe downhole vibration | Standard HPHT Profile + Optimized Residual Stress Distribution | Thick Coarse-Grain Diamond Matrix with Ultra-Deep Serrated Substrate Interface | Interceded rock formations, directional drilling, roller-cone hybrid bits, and nose/shoulder bit positions. |
| Abrasion-Resistant Series | Ultimate wear resistance (HV) under highly abrasive friction | Deep Acid Leached (100–300μm) to remove residual cobalt catalyst | Ultra-Dense Sub-Micron Diamond Packing Layer for maximum abrasive immunity | Deep vertical wells, high-quartz sandstone strata, and critical gauge-row bit protection. |
| General-Purpose Series | Balanced performance optimization for predictable ROP and cost-efficiency | Part-Leached / Standard Thermal Defense Profile | Mixed-Grain Polycrystalline Lattice Matrix bonded to rigid WC substrate | Homogeneous medium-hard formations, standard exploratory drilling, and core bit configurations. |
Standard Configurations)
- Manufacturing Process: High-Pressure High-Temperature (HPHT) synthesis utilizing China’s most advanced cubical press technology.
- Substrate Bond Interface: Patented Serrated Non-Planar Interface (NPI) designed to redistribute radial residual stress and amplify shear bond strength by 40%.
- Standard Outer Diameters : 13mm, 16mm, 19mm (Custom dimensions, tailored heights, and non-planar face inserts available on demand).
Product Engineering
1. The Science of the Serrated Substrate Interface
The fatal vulnerability of generic PDC cutters is delamination—where the diamond layer shears off from the tungsten carbide base due to extreme residual stress during cooling. Uking Diamond eliminates this failure vector.
Our cutters utilize a highly engineered serrated structural combination between the polycrystalline diamond layer and the hard alloy substrate. This non-planar pattern dramatically increases the binding surface area, absorbs localized impact spikes, and guarantees exceptional structural stability during heavy-duty directional or interrupted drilling.
2. Advanced Performance Test Lab & Deep-Well Thermal Immunity
Uking Diamond operates the most advanced PCD performance test lab in China, dedicated explicitly to R&D for the Oil & Gas drilling and mining industries. Our testing protocol includes rigorous impact drop-tests, continuous vertical turret lathe (VTL) wear profiling, and non-destructive ultrasonic C-scan imaging to verify 100% internal binding integrity.
To conquer the extreme downhole temperatures >750℃ generated by dry friction in deep wells, our high-performance cutters undergo an advanced chemical leaching process to remove thermal-expanding residual cobalt from the critical cutting tip zone. This creates a cobalt-free diamond shell that preserves diamond lattices, delays thermal graphitization, and keeps your drill bit running longer without premature pulling runs.
Key Value Propositions
- Unrivaled Wear & Impact Synergy: Delivers the industry’s finest balance between micro-hardness and impact toughness (TI/TTI), ensuring continuous ROP without cutter cracking.
- Patented Stress-Relieved Bonding: The cross-linked serrated geometry completely eliminates catastrophic delamination at the diamond-carbide interface.
- Superior Thermal Stability: Advanced acid-leaching technology safeguards the cutting edge from thermal degradation under extreme dry friction.
- Tailored Geometric Customization: Fully capable of designing customized inserts, specialized shaped cutters (ridge, spherical, conical), and custom profiles matching your proprietary bit body layouts.
Ready to Benchmark Your Bit Footage Against Premium Industry Standards? Apply for an Engineering Validation Pass.
At Uking Diamond, we support global drilling exploration with 20 years of high-pressure high-temperature (HPHT) metallurgical authority. Because premium-grade Oil & Gas PDC cutters are high-capital production assets, we do not distribute unchecked free samples. We treat downstream field validation with the absolute technical rigor your operation demands.
Don’t let unstable cutter wear compromise your Rate of Penetration (ROP). Contact our engineering desk today with your target formation profiles (e.g., highly abrasive sandstone or interbedded hard rock) and standard cutter specifications (13mm, 16mm, or 19mm). We will instantly unlock our Corporate Validation Pass: obtain a dedicated trial batch of our advanced non-planar interface or acid-leached standard cutters at direct factory wholesale cost, with 100% of the evaluation sample fee fully credited back to your account upon your first bulk commercial order.
Parameters
| Picture | Model | Diameter(±0.03)(mm) | Height(±0.05)(mm) | Diamond layer thickness(±0.2)(mm) |
 | 1304 | 13.30 | 4.5 | 1.5 |
| 1308 | 13.44 | 8.0 | 2.1 | |
| 1313 | 13.44 | 13.20 | 2.1 | |
| 1608 | 16.00/15.88 | 8.00 | 2.1 | |
| 1610 | 16.00/15.88 | 10.00 | 2.1 | |
| 1613 | 16.00/15.88 | 13.20 | 2.1 | |
| 1913 | 19.05 | 13.20 | 2.1 | |
| 1916 | 19.05 | 16.00 | 2.1 |
FAQ
Q: What are PDC cutters and how are they used in oil and gas drilling?
A: PDC (Polycrystalline Diamond Compact) cutters are cylindrical cutting elements consisting of a sintered polycrystalline diamond table bonded under HPHT conditions to a tungsten carbide substrate. In oil and gas drilling, PDC cutters are press-fitted or brazed into the face of a PDC drill bit – a steel or matrix-body rotary bit that replaces the roller cone (tricone) bit in formations where continuous shear cutting is more efficient than impact crushing. As the drill string rotates, each PDC cutter shears a chip from the formation face rather than crushing it, enabling significantly higher rates of penetration (ROP) in soft to medium-hard formations (mudstones, shales, limestones, sandstones). PDC bits now account for the majority of footage drilled in oil and gas globally.
Q: What cutter geometry and diamond table specifications determine PDC performance in different formations?
A: Key PDC cutter parameters are:
(1) Cutter diameter – standard sizes are 13 mm, 16 mm, 19 mm, and 25 mm; larger cutters remove more rock per revolution but require higher torque.
(2) Diamond table thickness – 2–4 mm; thicker tables extend abrasion life but increase residual stress at the diamond-carbide interface.
(3) Chamfer size – a larger chamfer on the cutting edge improves impact toughness (critical in interbedded formations) at the cost of a slight reduction in sharpness.
(4) Back-rake angle – 15–25° back-rake is standard for balance between aggressiveness and stability; steeper angles increase ROP in soft rock but reduce bit stability.
Uking Diamond PDC cutters for oil and gas are manufactured in 13–19 mm diameter with diamond table thickness options from 2 mm to 3.5 mm and both flat-face and non-planar (dome/ridge) face profiles.
Q: What formations are PDC cutters NOT recommended for, and what is the alternative?
A: PDC cutters perform poorly in highly interbedded hard-soft formations (e.g., alternating chert and shale), extremely hard and abrasive formations (quartzite, granite above ~200 MPa UCS), and cobble-bearing unconsolidated gravels where individual hard inclusions deliver high-impact point loads to the diamond table. In these conditions, impact fracture of the diamond table – rather than abrasive wear – becomes the primary failure mode, and roller cone bits with milled tooth or insert cutters are more appropriate. For geothermal drilling in igneous and metamorphic rock, impregnated diamond bits (with fine diamond particles throughout a metal matrix) are the standard alternative where PDC impact toughness is insufficient.
