Description
6″ PDC Drill Bit — Model LS1643R (IADC S323)
4-Blade PDC Drill Bit with φ16.05mm Cutters & W16X6 Micro Jet Nozzles for Soft to Medium-Hard Formations
Size: 6 in
IADC Code: S323
Blades: 4
Connection: 3 1/2″ API REG
Key Performance Advantages for Drilling Operations:
- Micro Jet Hydraulic Technology: Engineered with 6 W16X6 Micro jet nozzles to deliver focused, high-velocity fluid streams, drastically improving cutter thermal management and hole cleaning.
- Aggressive 4-Blade Shearing: Features high-grade φ16.05mm PDC cutters mounted on a balanced 4-blade profile to maximize ROP in soft to medium-hard rock strata.
- Versatile Operating Parameters: Optimized to work across a broad rotary speed range (60-300 RPM) with a recommended WOB of 20-40 kN (max 10-70 kN) and 12-20 Lps flow rate.
Product Overview & Technical Description
The LS1643R is an advanced 6″ PDC (Polycrystalline Diamond Compact) Drill Bit certified under IADC S323. Engineered for efficiency and longevity in soft to medium-hard geological formations, this bit incorporates a durable 4-blade design equipped with premium φ16.05mm PDC shear cutters.
A key feature of the LS1643R is its hydraulic configuration—utilizing 6 W16X6 Micro jet nozzles paired with a standard 3 1/2″ API REG connection. The micro jet arrangement optimizes fluid dynamics at the cutter face, preventing balling and rapidly flushing cuttings away from the bottom of the hole for faster, smoother drilling performance.
Technical Specifications — Model LS1643R
| Parameter | Specification Value | Engineering Context / Notes |
|---|---|---|
| Bit Size | 6″ | Standard 6-inch hole diameter |
| Bit Type | LS1643R | PDC fixed-cutter series |
| IADC Code | S323 | Steel/Matrix body, soft to medium-hard formation rating |
| Number of Blade | 4 | 4-blade layout for optimized cutter density and drilling speed |
| Cutter Type | PDC | Polycrystalline Diamond Compact shear cutters |
| Primary Cutter Size | φ16.05 mm | Heavy-duty shear cutters for rapid ROP and impact resistance |
| Nozzle Quantity | 6 | Multi-port hydraulic coverage across all blade channels |
| Nozzle Type | W16X6 (Micro jet) | Micro jet nozzle system for targeted high-velocity fluid flow |
| Rotary Speed (RPM) | 60 – 300 RPM | Compatible with top drive, rotary table, and PDM downhole motor drilling |
| Weight On Bit (WOB) | 10 – 70 kN (Recommend 20 – 40 kN) | Flexible weight operational window for smooth penetration control |
| Hydraulic Flow Rate | 12 – 20 Lps | High volumetric fluid flow for efficient cuttings clearance |
| Make Up Torque | 7.1 – 11.4 kN.m | Recommended API connection makeup torque |
| API Pin Connection | 3 1/2″ API REG | Standard 3 1/2 inch API Regular thread connection |
Field Problems Solved by LS1643R PDC Bit
1. Problem: Bit Balling & Hydraulic Inefficiency
Solution: The 6 W16X6 Micro jet nozzles focus hydraulic energy directly across cutter impact zones, preventing mud accumulation and keeping cutters cool.
2. Problem: Slow Rate of Penetration (ROP) in Interbedded Formations
Solution: High-impact φ16.05mm PDC cutters combined with a aggressive 4-blade arrangement maximize shearing action per rotation.
3. Problem: Cutter Wear from Thermal Degradation
Solution: Optimized fluid flow (12-20 Lps) with Micro jet placement continuously dissipates heat from PDC cutting elements, extending bit life.
4. Problem: Torque Spikes during High-Speed Drilling
Solution: The balanced 4-blade geometry stabilizes bottom-hole torque distribution across 60-300 RPM speed ranges.
Recommended Operating Parameters & Guidelines
To maximize bit life and achieve optimal Rate of Penetration (ROP) with the 6″ LS1643R PDC Bit, follow these operational parameters:
- Weight on Bit (WOB): Maintain 20 to 40 kN for standard operation (acceptable range 10-70 kN). Apply weight smoothly when tagging bottom.
- Rotary Speed (RPM): Operate between 60 and 300 RPM based on rig equipment and formation hardness.
- Hydraulic Flow Rate: Maintain 12 to 20 Lps to fully utilize the cleaning power of the W16X6 Micro jet nozzles.
- Make-up Torque: Tighten thread connection to 7.1 – 11.4 kN.m using proper API thread grease.
Frequently Asked Questions (FAQ)
