CoreMatrix™ Diamond Impregnated Bits

Drillers Edge works in partnership with you to select or develop an impregnated diamond core bit that works with all your drilling requirements. Our team of experts has an in-depth understanding of the entire product line and how to maximize the performance and life of each bit.

Each unique matrix is designed to cover a wide range of ground conditions including:

• Soft to ultra hard formations (Mohs Hardness Scale – 1 to 10).
• Abrasive or non-abrasive conditions.
• Competent, fractured, or broken formations.

Each matrix is made up of premium components (diamonds, powders, and alloys) to achieve maximum performance and withstand the demands of modern drilling ― including high penetration, load and torque.

All matrices are designed to target a specific rock formation. The CoreMatrix line is engineered to perform in different drilling conditions, depending on rock hardness, rock abrasiveness, required bit life, and penetration rate.

A few options of matrix selection are available:

• General-purpose matrices ― perfect starting matrix with ideal balance between penetration rate and bit life.
• “A” matrices for Abrasive formations ― ideal for abrasive rock formations.
• “E” matrices for Extended bit life ― ideal solution when extended bit life is required.
• “F” matrices for Freer cutting matrices ― ideal solution for drilling at high penetration rates.

The crown profiles are designed to fit different drilling conditions: type of rock formation (hardness, abrasiveness, composition), required penetration rate and bit life, and drill rig configuration. Selection of proper crown profile is critical not only to maximizing bit performance, but also to ensure no damage occurs down the hole.

CoreMatrix crown profiles are standardized on three waterway configurations.

STANDARD Waterway

• General purpose design for competent, broken, abrasive, and non-abrasive formations.
• Allows for maximum matrix volume and face contact area.
• Requires mid to high-power drill rigs to operate.
• Delivers maximum bit life.

PIE SHAPED Waterway

• Superior flushing capability
• Suitable for mixed formations containing broken and competent zones.
• More difficult conditions requiring increased fluid flow (coarse-grained, fractured, and broken).
• Requires mid-power drill rigs to operate.
• Perfect balance between penetration rate and bit life.

TURBO Waterway

• High productivity ― reduced contact area allows for increased penetration rates.
• High performance (free cutting) under low weight on the bit.
• Suitable for competent formations
• Requires low to mid-power drill rigs to operate.
• Delivers maximum penetration rate.

For more difficult conditions, crown profiles are offered with additional configurations to meet special drilling requirements.

Wide ID Opening

• For STANDARD and PIE SHAPED Waterway.
• More difficult conditions requiring increased fluid flow (coarse-grained, fractured, and broken).
• Reduced contact area allows for increased penetration rates.

SUPERFLUSH (Deep ID) Opening

• For STANDARD, PIE SHAPED, and TURBO Waterway.
• Conditions with unconsolidated/broken formations.
• Lost circulation conditions where heavier muds are required.
• Designed for improved water flow with minimized flushing of core sample.

FACE DISCHARGE

• For STANDARD, PIE SHAPED, and TURBO Waterway.
• Difficult conditions where the core sample is susceptible to washing.

Penetration Index – RPC (RPI)

This is a useful calculation to help assess if the bit is being optimized in relationship to RPM and ROP.

RPC (RPI) = RPM/ROP

e.g.

RPC = 1200 RPM / 15 cm = 80 rotations per centimeter

RPI = 1200 RPM / 6 inches = 200 rotations per inch

A good target is 80 – 100 RPC (200 – 250 RPI)