The High-Efficiency PDC Core Drilling Bit is specially designed for fast and stable coring in medium to hard rock formations. Featuring a hollow-body structure and polycrystalline diamond cutters, this bit delivers excellent penetration rate, stable borehole quality, and reliable core recovery. It is widely used in geological exploration, coal mining, water conservancy projects, and oil & gas related drilling where efficiency and durability are essential.
Product Overview
PDC Core Drilling Bits utilize polycrystalline diamond cutters to achieve a shearing cutting mechanism rather than crushing rock. This allows for smoother drilling, lower energy consumption, and significantly improved penetration rates compared with conventional core bits.
The hollow tubular structure enables continuous core recovery while maintaining excellent stability during drilling. Compared with impregnated or surface-set diamond bits, PDC core bits perform especially well in medium-hard and homogeneous formations, offering higher drilling efficiency and longer service life.
These bits are widely used in modern geological exploration projects where drilling efficiency and core quality directly affect project timelines and evaluation accuracy.
Key Features & Advantages
● High-Performance PDC Cutters
Premium-grade polycrystalline diamond cutters
Strong wear resistance and impact stability
Excellent cutting efficiency in medium-hard formations
● Hollow Core Design
Ensures smooth core recovery
Reduces blockage and drilling resistance
Improves sample integrity
● Excellent Gauge Protection
Maintains hole diameter throughout drilling
Reduces deviation and reaming frequency
Improves overall drilling stability
● High Penetration Rate
Faster drilling compared with conventional core bits
Lower energy consumption
Reduced operating cost per meter
Applications
Suitable Formations
Medium to medium-hard rock
Sandstone, shale, limestone
Mudstone and layered formations
Weathered rock zones
Typical Applications
Mineral exploration drilling
Coal exploration and sampling
Geological investigation
Hydropower and infrastructure projects
Oil & gas preliminary drilling
Manufacturing & Quality Control
Selection of high-grade PDC cutters
Precision CNC machining
Controlled welding and heat treatment
Dynamic balance inspection
Final performance inspection before delivery
Each bit is manufactured to ensure:
Stable cutting performance
Long service life
Consistent drilling results
Reliable field performance
Performance Comparison
|
Item |
PDC Core Bit |
Conventional Core Bit |
|
Penetration Rate |
★★★★★ |
★★★ |
|
Service Life |
★★★★☆ |
★★★ |
|
Core Quality |
★★★★☆ |
★★★ |
|
Energy Efficiency |
High |
Medium |
|
Suitable Formation |
Medium-hard |
Soft–hard mixed |
Field Application Case
Project Location: South Africa – Coal Exploration Project
Geological Condition:
Sandstone and shale layers
Medium hardness
Moderate abrasiveness
Challenges Before:
Low drilling efficiency
Frequent bit replacement
Poor core integrity
Solution
The customer replaced conventional core bits with our PDC Core Drilling Bit (HQ size).
Results:
Penetration rate increased by 30%+
Core recovery improved significantly
Reduced bit consumption
More stable drilling performance
Customer Feedback
The PDC core bit performed extremely well in our coal exploration project.
Drilling speed increased noticeably, and the core samples were much cleaner and more complete.
Operation Tips
Recommended for medium to medium-hard formations
Avoid excessive WOB or impact drilling
Maintain stable flushing circulation
Monitor cutter wear regularly
Select proper bit size according to core barrel
Frequently Asked Questions (FAQ)
Q1: What formations are PDC core bits suitable for?
A: Medium to medium-hard formations such as sandstone, limestone, shale, and coal-bearing strata.
Q2: Can you customize the size?
A: Yes. BQ, NQ, HQ, PQ and custom sizes are available.
Q3: How does it compare with impregnated bits?
A: PDC core bits drill faster and consume less energy, while impregnated bits are better for very hard rock.
Q4: Is it suitable for water well drilling?
A: Yes, especially for geological sampling and shallow exploration.
Q5: Do you provide technical support?
A: Yes. We provide bit selection guidance and drilling parameter recommendations.