4-1-2-222-3mm-pdc-bit

4-1-2-222-3mm-pdc-bit
4 1/2 222.3mm PDC Bit

 

Product Description – High Quality 8 Inch Rock Drilling Tools Water Oil Well Diamond Drag Coring PDC Drill Bit

4 1/2 222.3mm PDC Bit

The High Quality 8 Inch Rock Drilling Tools Water Oil Well Diamond Drag Coring PDC Drill Bit is a precision-engineered drilling solution designed for high-performance drilling applications in both water and oil well environments. With a bit size of 222.3mm (8 3/4 inches), this PDC (Polycrystalline Diamond Compact) drill bit delivers exceptional durability and efficiency when tackling medium-hard to hard formations, particularly those with high compressive strength and abrasiveness, such as mudstone, limestone, anhydrite, and sandstone.

Structural Features

This drill bit features five robust blades (or wings), precisely distributed to ensure balanced cutting, optimal penetration rate, and enhanced borehole stability. The bit is designed with a 4 1/2″ API Reg pin connection thread, which is a standard in the drilling industry, ensuring compatibility with a wide range of drilling systems and tools.

Each of the five blades incorporates advanced gauge protection, which enhances wear resistance on the outer edges of the bit. This protective feature helps maintain hole diameter, reduces deviation, and prolongs the bit’s service life even under harsh drilling conditions.

Material and Manufacturing

4 1/2 222.3mm PDC Bit

The PDC bit is manufactured using high-strength steel and premium-grade polycrystalline diamond compact cutters. These cutters are known for their outstanding hardness and thermal stability, which contribute to the bit’s ability to maintain high performance over long drilling intervals without the need for frequent replacements or maintenance.

Conforming to the SY/T5164 industrial standard, this bit meets stringent quality requirements for oil and gas industry tools, ensuring consistent performance, reliability, and safety in field operations.

Performance Parameters

The recommended Weight on Bit (WOB) ranges from 25 to 120 kN/mm, allowing for a wide operational envelope depending on formation type and drilling strategy. This flexibility makes the bit suitable for a variety of rig settings, including vertical and directional drilling.

The Rotations Per Minute (RPM) range is 60–350 r/min, giving drill operators the ability to fine-tune drilling speed based on specific geological conditions. Combined with the PDC bit’s sharp cutting structure and efficient fluid passage design, this allows for high rates of penetration and effective cuttings removal.

Application

This PDC bit is tailored for medium-hard to hard formations that exhibit both high compressive strength and significant abrasiveness. Its target formations include:

• Mudstone: Known for its compact layering and moisture content, this formation challenges bit durability, which the PDC handles with ease.

• Limestone: A commonly encountered sedimentary rock with high compressive strength that can dull conventional bits quickly.

• Anhydrite: A tough, sulfate-rich formation that requires enhanced cutter strength and thermal resistance.

• Sandstone: An abrasive formation where gauge protection is critical to maintain hole shape and bit integrity.

This makes the bit an ideal choice for operators engaged in exploration and production of hydrocarbons, geothermal wells, or deep water wells where formation variability is expected.

Weight and Handling

With a total weight of 70 kg, the bit is substantial enough for stability during downhole operations but still manageable for transport and rig handling. Proper lifting points and balanced design further ensure safe handling during installation or removal.

Conclusion

The 8 Inch High-Quality PDC Drill Bit is a versatile, high-performance tool built to meet the demands of modern oil and water well drilling. Its optimized blade configuration, durable gauge protection, and industry-standard design ensure excellent drilling efficiency, longevity, and cost-effectiveness in challenging geological conditions. Whether drilling in mudstone, limestone, or abrasive sandstone, this bit stands out as a reliable choice for operators seeking productivity and performance in one rugged package.