Description
4 5/8″ PDC Drill Bit — Model LS1332R (IADC S332)
3-Blade Matrix/Steel Body PDC Bit with φ13.44mm Cutters for Soft-to-Medium Formations
Size: 4 5/8 in
IADC Code: S332
Blades: 3
Connection: 2 7/8″ API REG
Key Performance Advantages for Drilling Operations:
- High-Speed Penetration (ROP): Optimized 3-blade layout with premium φ13.44mm PDC cutters delivers rapid cutting action and efficient rock shearing in soft-to-medium strata.
- Superior Hydraulics & Flushing: Equipped with 5 fixed nozzles (W14X5) supporting a flow rate of 8-15 Lps to continuously cool cutters and prevent bit balling.
- Wide Operational Window: Operates efficiently across 60-300 RPM speeds with low required Weight-on-Bit (10-50 kN), reducing stress on the drill string.
Product Overview & Technical Description
The LS1332R is a high-efficiency 4 5/8″ PDC (Polycrystalline Diamond Compact) Drill Bit classified under IADC S332. Specially engineered for slim-hole, directional, and standard rotary drilling applications, this bit features a aggressive 3-blade design fitted with premium φ13.44mm PDC cutters.
Designed with 5 fixed W14X5 nozzles and a standard 2 7/8″ API REG connection, the LS1332R maintains excellent bottom-hole hydraulics and hole cleaning efficiency. Its cutter layout minimizes dynamic torque fluctuations while maximizing Rate of Penetration (ROP) in soft to medium-hard rock formations such as shale, limestone, and sandstone.
Technical Specifications — Model LS1332R
| Parameter | Specification Value | Engineering Context / Notes |
|---|---|---|
| Bit Size | 4 5/8″ | Slim-hole drilling diameter |
| Bit Type | LS1332R | PDC fixed-cutter series |
| IADC Code | S332 | Steel/Matrix body, soft-to-medium formation rating |
| Number of Blades | 3 | Open-blade structure for enhanced fluid flow and ROP |
| Cutter Type | PDC | Polycrystalline Diamond Compact shear cutters |
| Primary Cutter Size | φ13.44 mm | High-impact shear cutter compacts |
| Nozzle Quantity | 5 | Multi-port fluid placement across blade junk slots |
| Nozzle Type | W14X5, fixed | Fixed fluid nozzles for optimized hydraulic horsepower |
| Rotary Speed (RPM) | 60 – 300 RPM | Broad speed compatibility for downhole motors and top drives |
| Weight On Bit (WOB) | 10 – 50 kN | Low required mechanical loading for precise control |
| Hydraulic Flow Rate | 8 – 15 Lps | Optimized volumetric flow for rapid cuttings evacuation |
| Make-up Torque | 4.3 – 6.9 kN.m | Recommended connection makeup torque |
| API Pin Connection | 2 7/8″ API REG | Standard API Regular pin thread connection |
Field Problems Solved by LS1332R PDC Bit
1. Problem: Bit Balling in Sticky Formations
Solution: Wide junk slots provided by the 3-blade structure, combined with 5 targeted fluid nozzles (8-15 Lps flow rate), ensure rapid cuttings evacuation and keep cutters clean.
2. Problem: High Torque Variation & Vibrations
Solution: The φ13.44mm cutter arrangement balances cutting forces across all 3 blades, smoothing torque response during high RPM rotation (up to 300 RPM).
3. Problem: Rapid Cutter Wear in Interbedded Strata
Solution: High-grade PDC shear compacts offer superior thermal and impact stability, extending bit lifespan and reducing total trip time.
4. Problem: Weight Limitation on Light Drilling Rigs
Solution: Highly efficient shearing action requires minimal Weight on Bit (only 10-50 kN) to achieve maximum penetration rate.
Recommended Operating Parameters & Guidelines
For maximum drilling performance and extended cutter longevity using the 4 5/8″ LS1332R PDC Bit, follow these operational parameters:
- Rotary Speed (RPM): Maintain between 60 and 300 RPM. Higher speeds can be utilized with downhole positive displacement motors (PDM).
- Weight on Bit (WOB): Apply 10 to 50 kN. Avoid sudden impact loading when tagging bottom.
- Hydraulic Flow Rate: Keep fluid flow between 8 and 15 Lps to prevent thermal damage to PDC cutters and maintain clear hydraulics.
- Make-up Torque: Tighten pin connection to 4.3 – 6.9 kN.m using proper thread compound.
Frequently Asked Questions (FAQ)
