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Engineered for high-speed drilling in soft to medium formations, this China-supplied drag bit features 6 PDC cutter-equipped blades in a parabolic profile, achieving up to 30m/hour ROP in shale and limestone. The low-profile design (150mm height) reduces torque in horizontal wells, while dual-jet nozzles optimize cuttings evacuation. Compatible with both WBM and OBM, it’s ideal for shale gas lateral drilling, pipeline trenching, and geothermal well development.
Replaceable blade design for quick field maintenance, CFD-optimized hydraulics, and API 5D certification for reliable performance in HPHT environments.
| Quantity: | |
|---|---|
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
14 3/4'' 117
14 3/4'' 537
12 1/4 ''537
10 5/8'' 537
22''517
8 3/4'' 617 
15 1/2'' 517
9 5/8'' 737
12 1/4'' 537
6 1/2'' 537
8 1/2'' 517
108mm 437
6 1/2'' 217
12 1/4''637
6'' 517
PDC 6 1/4''
PDC 4 3/4''
Drag bit 12''
8 1/2'' single cone
8 1/2'' single cone
Hole Opener 18''
Hole Opener 12''
8 1/2'' single cone
Stabilizer
Reamer 17 1/2''
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
14 3/4'' 117
14 3/4'' 537
12 1/4 ''537
10 5/8'' 537
22''517
8 3/4'' 617 15 1/2'' 517
9 5/8'' 737
12 1/4'' 537
6 1/2'' 537
8 1/2'' 517
108mm 437
6 1/2'' 217
12 1/4''637
6'' 517
PDC 6 1/4''
PDC 4 3/4''
Drag bit 12''
8 1/2'' single cone
8 1/2'' single cone
Hole Opener 18''
Hole Opener 12''
8 1/2'' single cone
Stabilizer
Reamer 17 1/2''
