step drag bits | ||
Diameter | Thread | |
2 to 17 1/2 inch | 50.8 to 444.5mm | Optional |
| Weight (KG) | 20 |
| Video factory inspection | Available |
| Mechanical test report | Available |
| Diameter | 76mm-590mm |
| Thread | API |
| Usage | Drilling |
The 12 1/4'' (311.1mm) Drag Bit Blade Bit is designed for high-speed drilling in soft to medium formations, featuring 6 forged alloy steel blades with PDC cutters (16mm diameter) arranged in a parabolic profile. The bit body (4130 alloy steel, HRC 40-45) incorporates a central fluid channel and 4 lateral nozzles (18mm diameter), enabling maximum hydraulic horsepower transfer. Its low-profile design (150mm height) reduces torque and drag in horizontal wells, with a WOB rating of 150kN and optimal RPM range of 400-600. The parabolic blade profile minimizes drag in tight hole conditions, supported by a balanced mass distribution (G1.0 dynamic balance).
70mm blade spacing and 25° cutting angle optimize ROP up to 30m/hour in shale and limestone, with field records of 45m/hour in Mississippi Lime
PDC cutters with 8000#/cm³ diamond concentration (MegaForce™ technology) provide 40% faster penetration than standard PDC bits in siltstone
Finite element balanced design (asymmetry <0.5kg·cm) minimizes vibrations at 600 RPM, passing 2-hour dynamic balance test (ISO 1940 G1.0)
Dual-jet nozzle arrangement (2 front, 2 rear) creates cross-flow for superior cuttings evacuation, reducing ECD by 10% in 2.0 SG mud systems
3mm blade edge chamfer reduces regrinding frequency by 30% in abrasive siltstone (quartz content >40%), extending blade life by 50 hours
Pressure relief grooves (5mm depth) on blade backs prevent mud cake buildup in plastic clay (PI >30), as proven in the Marcellus Shale
Optional carbide-tipped blades (WC-10Co) for transitional formations with interbedded sandstone layers (UCS 80-120MPa)
Compatible with both WBM (pH 8-12) and OBM (HTHP up to 150°C), with material compatibility certified by NACE MR0103
Replaceable blade design (4-bolt retention) allows field maintenance within 60 minutes, reducing downtime for cutter replacement
Horizontal shale gas drilling in the Marcellus and Bakken plays, achieving 10,000ft laterals with <1% tortuosity
Geothermal well development in soft volcanic tuff (UCS 30-70MPa) for binary cycle power plants
Pipeline trench drilling in cohesive glacial till, meeting 0.5% grade tolerance requirements for gas pipelines
Environmental remediation boring in unconsolidated sediments with high organic content
Blade Retention Kit: 12.9-grade high-tensile bolts (proof load 1200MPa) with Nylok® anti-vibration washers, torque rated to 300 ft-lb
Nozzle Cleaning Tool: Stainless steel brush set (bristle hardness 75D) with ergonomic handle, effective for removing barite sag in nozzles
Bit Alignment Sub: Short sub (0.5m, API 5B 6 5/8'' REG thread) with anti-torque keys, improving weight transfer efficiency by 15% in extended-reach wells
ROP Optimization: CFD modeling of bit hydraulics ensures 95% nozzle efficiency, validated by pressure drop tests at 1000 GPM flow rate
Cost-Effective Maintenance: Modular blade design allows individual cutter replacement, reducing repair costs by 40% compared to full bit replacement
Drilling Support: Optional IoT package with embedded strain gauges for real-time torque/pressure monitoring via cloud-based dashboard
Industry Compliance: Certified to API Spec 5D and ISO 13679 (PetroSteel) for premium performance in HPHT environments