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PDC Drill Bits’ core component—Cutting Elements made of polycrystalline diamond bonded to a tungsten carbide substrate—delivers exceptional hardness and wear resistance, outperforming traditional drill bits in most soft to medium-hard formations. Designed to work with various Drill Rig Type configurations, the PDC Drill Bit optimizes drilling speed, reduces bit wear, and lowers operational costs, making it a preferred choice for oil and gas, water well, geological exploration, and infrastructure projects worldwide.
Our PDC Drill Bit is defined by its innovative design and superior performance features. The Bit Body Material—available in steel (S), matrix (M), reinforced matrix (M), or steel-matrix composite (S-M)—is selected to match specific drilling conditions, ensuring durability and impact resistance. The Crown Profile (short taper, medium crown, short fish-tail, etc.) is optimized for formation penetration, while the Flow Area is calibrated to enhance cutting fluid circulation, reducing heat buildup and flushing cuttings away from the bit face. Each bit is manufactured to API Spec 7-1 standards, with precise API Thread Type compatibility for seamless integration with drill strings. The recommended WOB (Weight on Bit) and RPM (Rotations Per Minute) ranges are tailored to maximize efficiency, and specialized Cooling Requirement (emulsified fluid, oil-mist, closed-loop systems) protect the bit from overheating in demanding environments.
Drill Type | Applicable Rig Type | Core Application Scenario | API Standard Size (Diameter) | API Thread Type | Formation Adaptation (Lithology / Protodyakonov Hardness f-value) | Recommended Weight on Bit (WOB) | Recommended RPM | Exclusive Core Parameters | Typical Service Life (h) | Cooling Requirement | Operational Precautions | Executive Standard |
PDC Drill Bit | Portable Geological Exploration Rig | Shallow soft formation prospecting, small coring | 3 3/8 in (85.7mm) | 2 3/8 REG | Siltstone / Loose Clay, f=1~2 | 15~30kN | 180~250 | Bit Body Material: Steel (S); Cutting Elements: 19mm×40 (Polycrystalline Diamond); Crown Profile: Short Taper; Flow Area: 35cm² | 120~180 | Emulsified Cutting Fluid Required | Avoid gravel layers to prevent cutting element chipping | API Spec 7-1 |
PDC Drill Bit | Hydrological Water Well Rig | Medium-deep water well drilling, homogeneous soft rock | 4 1/2 in (114.3mm) | 3 1/2 REG | Soft Shale / Sandy Clay, f=1~3 | 20~45kN | 150~220 | Bit Body Material: Steel (S); Cutting Elements: 16mm×50 (PDC); Crown Profile: Medium Crown; Flow Area: 40cm² | 150~220 | Water-Based Cutting Fluid Required | Control feed rate to avoid wellbore collapse in unconsolidated formations | API Spec 7-1 |
PDC Drill Bit | Directional Geological Rig | Directional prospecting holes, shale gas pilot wells | 5 7/8 in (149.2mm) | 4 1/2 REG | Homogeneous Shale / Mudstone, f=2~4 | 25~55kN | 120~200 | Bit Body Material: Matrix (M); Cutting Elements: 13mm×60 (PDC); Crown Profile: Short Fish-Tail; Flow Area: 45cm² | 180~250 | Oil-Mist Cooling Required | Monitor steering torque; avoid sudden direction changes | API Spec 7-1 |
PDC Drill Bit | Oil & Gas Rig (Vertical Well) | 2nd section drilling of conventional oil wells, medium-soft formations | 8 1/2 in (215.9mm) | 4 1/2 REG | Sandstone-Shale Interbed / Soft Limestone, f=3~5 | 35~80kN | 100~180 | Bit Body Material: Matrix (M); Cutting Elements: 16mm×80 (PDC); Crown Profile: Long Crown; Flow Area: 55cm² | 200~300 | High-Pressure Cutting Fluid Required | Clean flow channels regularly to prevent cuttings accumulation | API Spec 7-1 |
PDC Drill Bit | Oil & Gas Rig (Horizontal Well) | Shale gas horizontal section, long-interval drilling | 9 5/8 in (244.5mm) | NC50 | Organic Shale / Low-Permeability Sandstone, f=3~6 | 40~90kN | 80~160 | Bit Body Material: Reinforced Matrix (M); Cutting Elements: 13mm×90 (PDC); Crown Profile: Steep Long Crown; Flow Area: 60cm² | 250~350 | Forced Oil-Mist Cooling Required | Maintain stable RPM; avoid drill string vibration | API Spec 7-1 |
PDC Drill Bit | Deep Well Oil & Gas Rig | 3rd section of deep oil wells, medium-hard formations | 12 1/4 in (311.1mm) | NC50 | Dense Sandstone / Chalk, f=4~7 | 50~100kN | 60~140 | Bit Body Material: Matrix (M); Cutting Elements: 13mm×100 (PDC); Crown Profile: Flat Crown; Flow Area: 65cm² | 220~320 | High-Temperature Resistant Cutting Fluid Required | Inspect cutting element wear via downhole tools; replace if needed | API Spec 7-1 |
PDC Drill Bit | Large-Scale Shale Gas Rig | High-efficiency drilling of shale gas reservoirs | 17 1/2 in (444.5mm) | NC61 | Thick Shale Formations / Minor Siltstone Interbeds, f=2~5 | 60~120kN | 50~120 | Bit Body Material: Super-Hard Matrix (M); Cutting Elements: 16mm×120 (PDC); Crown Profile: Optimized Long Crown; Flow Area: 75cm² | 280~400 | Closed-Loop Cooling System Required | Use anti-sticking drilling fluid to prevent bit balling in shale | API Spec 7-1 |
PDC Drill Bit | Mining Infrastructure Rig | Large-diameter infrastructure holes, homogeneous rock | 26 in (660.4mm) | 8 REG | Soft-Medium Limestone / Dolomite, f=3~6 | 80~150kN | 40~100 | Bit Body Material: Steel-Matrix Composite (S-M); Cutting Elements: 19mm×150 (PDC); Crown Profile: Wide Crown; Flow Area: 90cm² | 200~300 | High-Pressure Air-Water Cooling Required | Ensure uniform WOB distribution to avoid uneven wear of cutting elements | API Spec 7-1 |
The PDC Drill Bit is versatile across a wide range of applications. For shallow soft formation prospecting, portable geological rigs use small-diameter bits to collect core samples efficiently. Hydrological water well rigs rely on medium-diameter bits for drilling homogeneous soft rock formations, ensuring reliable water well construction. In directional prospecting holes and shale gas pilot wells, directional geological rigs use specialized bits to maintain precise well trajectories. Oil & Gas Rig (Vertical Well) deploy large-diameter bits for the second section of conventional wells, while horizontal well bits excel in long-interval shale gas drilling. Deep Well Oil & Gas Rig use bits designed for medium-hard formations like dense sandstone, and Mining Infrastructure Rig utilize large-diameter bits for homogeneous rock in infrastructure holes. Additionally, the bit is ideal for photovoltaic power station foundation piles and municipal construction projects requiring fast, precise drilling.
PDC Drill Bit perform optimally in soft to medium-hard formations such as siltstone, clay, shale, sandstone, and limestone. They are less effective in highly abrasive or fractured formations with gravel, where diamond insert bits may be preferred.
The Cooling Requirement depends on formation temperature, drilling speed, and bit design. Shallow, low-temperature applications may use emulsified or water-based fluids, while deep, high-temperature wells require oil-mist or high-temperature resistant fluids to prevent bit damage.
Matrix (M) bodies offer superior wear resistance in abrasive formations, while steel (S) bodies provide greater impact resistance for formations with occasional gravel or hard inclusions. Reinforced matrix or steel-matrix composites combine the benefits of both materials for demanding conditions.
Inspect the Cutting Elements for wear, chipping, or damage regularly—especially after drilling through hard intervals. Replace the bit if wear exceeds 20-30% of the diamond layer, or if performance (drilling speed, torque) degrades significantly. Following recommended WOB and RPM ranges extends bit life.
