Universal Soft & Medium Formation PDC Drill Bit

Our universal PDC drill bits are engineered for high-efficiency conventional drilling operations, featuring a balanced structural design, strong rock-breaking capacity, and outstanding cost performance. Suitable for mass drilling projects with soft to medium-hard formations, this series covers complete specifications and supports customized processing, widely applied in geological exploration, water well drilling, and shallow oil & gas well drilling.

1. Bit Size Range

This universal PDC bit series covers conventional small and medium diameters, including 75mm, 91mm, 98mm,110mm, 113mm, 120mm,133mm,140mm,153mm，165mm,171mm,200mm,216mm,219mm,220mm,250mm,252mm,311mm. It perfectly matches daily civil drilling and geological prospecting equipment, with standardized dimensional tolerance to ensure smooth downhole running and stable drilling efficiency.

2. Standard Thread Specifications

All bits adopt API standard regular threads, mainstream specifications include 2 3/8” REG, 2 7/8” REG and 3 1/2” REG. The threads undergo precision turning and anti-rust treatment, featuring high connection strength, good sealing performance, no tripping or slipping during high-speed drilling, and strong compatibility with mainstream domestic and foreign drill rods.

3. Blade Configuration

Equipped with 3-blade and 4-blade mainstream designs. The 3-blade structure features wide chip removal space and fast drilling speed, ideal for ultra-soft formations; the 4-blade design enhances overall bit rigidity, improves drilling stability, and reduces bit vibration, suitable for continuous drilling in uniform medium-soft formations. All blades adopt integrated forging molding with high wear resistance and impact resistance.

4. PDC Cutter Specifications

Matched with high-quality 1304 (Φ13×4mm) and 1308 (Φ13×8mm) flat PDC cutters. The diamond layer is uniform and dense, with high hardness and strong abrasion resistance. The 1304 cutter is for fast drilling of soft formations, while the thickened 1308 cutter extends service life in medium-soft formations, effectively reducing replacement frequency.

5. Water Outlet Design

Adopts central main water outlet + auxiliary side water outlets multi-channel design. The waterway layout is reasonable with large flux, which can quickly discharge rock powder and cuttings, prevent bit mud balling and hole blocking, effectively cool the cutting teeth and blades, and ensure continuous and stable drilling operation.

6. Applicable Formations

Mainly applicable to soft to medium-low hardness formations (firmness coefficient f≤10), including clay, loam, sand soil, weathered rock, soft shale, mudstone, and loose sandstone. It performs excellently in homogeneous and low-abrasive conventional strata.

7. Application Fields

Widely used in civil water well drilling, urban geological prospecting, road and bridge foundation detection, shallow coal field exploration, and small-scale geothermal drilling. It is the preferred cost-effective tool for conventional shallow drilling projects.