PDC Core Bit for Soft to Moderately Weathered Formations
High Core Integrity
Soft Formation Adaptability
Wear-Resistant & Stable
The PDC core bit uses premium PDC cutter cutting structure, specifically designed for soft formations such as soil layers, red sandstone, mudstone, and moderately weathered formations. It combines efficient hole opening with complete coring capability, performing excellently in geological surveys, rock sampling, water well drilling, and other scenarios. It enables rapid rock breaking and smooth coring, significantly improving drilling and sampling efficiency in soft formations while reducing construction costs.
Widely used in geological survey rock sampling, mineral resource exploration coring, water well drilling hole opening and completion, engineering geological survey sampling, and soft formation foundation construction drilling.
Core Advantages
Efficient Opening & Rock Breaking
Utilizes premium PDC cutters with sharp cutting edges and high rock breaking efficiency. Provides fast drilling speed in soft formations such as soil layers, red sandstone, and mudstone, enabling rapid hole opening and significantly improving construction efficiency, meeting rapid drilling needs in soft formations.
High Core Integrity & Sample Quality
Optimized coring structure and blade design minimize core fragmentation and loss during coring. Achieves core recovery rate ≥90% in soft and moderately weathered formations, ensuring rock sample integrity and authenticity, meeting geological analysis and exploration requirements.
Specialized Adaptation for Soft Formations
Specifically adapted for soft formations including soil layers, red sandstone, mudstone, backfill, and moderately weathered rock. PDC cutters provide low cutting resistance and minimal sticking, ensuring stable drilling in soft formations while avoiding cutter breakage and loss, resulting in smoother operation.
Wear-Resistant & Long Service Life
Premium PDC cutters combined with reasonable cutter layout provide excellent wear resistance. Low wear rate in soft formations enables longer footage per bit, reducing bit change frequency and lowering construction costs and labor intensity.
Multiple Size Coverage & Wide Adaptability
Covers various mainstream size specifications from small to large diameters, adapting to different diameter requirements for geological sampling, water well drilling, and other scenarios. Thread types are customizable, compatible with different drill rig models.
Applications
Suitable Formations
Soil layers, red sandstone, mudstone, backfill soil, moderately weathered rock, and other soft formations.
Typical adaptation: Red sandstone, mudstone, and other moderately soft to moderately hard weathered formations.
Not recommended for hard intact formations (such as granite, basalt) and highly abrasive formations.
Drilling Method
Rotary Drilling – Recommended to use with water or low-solid mud circulation to ensure bit cooling and cuttings removal. Control drilling pressure and rotation speed to avoid impact loads, improving core integrity and bit life.
Product Specifications
Standard Bit Diameter (mm)
91
113
133
153
171
200
220
245
275
325
Custom diameters and special lengths available upon request
Customization Services
We can adjust cutter density and PDC cutter grade based on formation conditions (such as soft soil layers, red sandstone, weathered rock) to optimize rock breaking and coring performance. If your drill pipe thread is not listed, simply provide thread parameters or drawings to receive a fully customized connection solution.
Request Quote & Contact
Email:
Contact us for OEM/ODM service, custom solutions, and technical support for soft formation coring. We respond within 24 hours on business days.
