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As a China supplier of hard rock drilling solutions, our IADC737 tricone bit is engineered for extreme formations like granite and basalt (UCS >250MPa). Featuring 10 rows of tungsten carbide insert (TCI) chisel teeth (12mm height) and a journal bearing system with DLC-coated thrust collars, it delivers 20% longer life in abrasive environments. The 25° cone angle and helical flutes optimize cuttings evacuation, while the 65mm journal diameter enhances load capacity for deep wells (>6000m). Certified to IADC 737 standards, it’s ideal for shale gas drilling, mining blast holes, and geothermal exploration.
Custom tooth geometry based on rock core analysis, API-compliant quality, and 72-hour global shipping for urgent projects.
737
1
tianjin ,shanghai
water well,oil well,HDD,exploration,etc
100% New
| Quantity: | |
|---|---|
HENGJI BIT SPECIFICATION | |
Bit Size | 9 5/8'’, 244.5mm |
IADC Code | 737 |
Series | HR |
Tooth type | TCI/tungsten carbide insert |
Connection | 6 5/8 API REG PIN |
Bearing | rubber sealed bearing |
Nozzle | three jet nozzles |
Rotary Speed(rpm) | 70~40 |
Weight on Bit(KN/MM) | 0.7~1.2 |
Application | water well,oil well,HDD,exploration,etc |
Formation | Hard formations |
Designed for extreme hard rock environments, the 9 5/8'' (244.5mm) IADC737 tricone bit features three steel-body cones with tungsten carbide inserts (TCI) arranged in 10 rows of chisel teeth (12mm height). The bit incorporates a journal bearing system with electroless nickel plating (ENP) and oil-lubricated seals, capable of withstanding WOB up to 350kN and temperatures up to 180°C. Its 16-blade cutter head and 25° cone angle optimize crushing and shearing in granite, basalt, and marble formations, certified to IADC 737 standards for premium performance. The helical flute design (38mm depth) ensures efficient cuttings removal even in low mud circulation scenarios.
TCI teeth (WC-10Co composition, 1300HV hardness) penetrate rocks with unconfined compressive strength (UCS) up to 300MPa, outperforming conventional milled teeth by 25% in gabbro
10mm-diameter tungsten carbide gauge buttons (arranged in 3 rows) reduce side wear by 25%, maintaining gauge integrity for 100+ hours in abrasive quartzite
Balanced cone rotation (±5% speed variance) minimizes eccentric loading, improving bit life by 20% compared to unbalanced designs
Thrust collar with diamond-like carbon (DLC) coating (surface roughness Ra ≤ 0.1μm) reduces friction coefficient to 0.05, 40% lower than standard ENP coatings
Pressure-equalizing membrane seals (polyurethane with fabric reinforcement) maintain grease integrity at 5000 PSI mud pressure, extending bearing life to 300+ hours
65mm journal diameter (10% larger than industry standard) increases load capacity by 15% for deep well applications (>6000m depth)
18° bit face inclination angle balances ROP and stability in highly fractured limestone, with field data showing 15% faster penetration than competitor models
Mud motor compatibility tested with Sperry-Sun and Geoservices systems, achieving 3°/10m build-up rate in hard sandstone
Helical flute pitch (200mm) optimized via discrete element method (DEM) simulation for 95% cuttings evacuation efficiency
Deep shale gas drilling in hard carbonate reservoirs (e.g., Middle East Khuff formation)
Mining blast hole drilling for iron ore extraction in basalt formations (UCS 200-280MPa)
Geotechnical exploration in schist and gneiss for hydroelectric dam foundations
Foundation piling for offshore wind farms in granite seabeds
Bit Stabilizer: 3-wing roller stabilizer (244mm OD) with tungsten carbide hardfacing, reducing bit whirl amplitude by 60% as measured by downhole vibration sensors
Bearing Grease Kit: High-temperature grease (NLGI 2, dropping point 260°C) formulated for 180°C continuous operation, meeting API 10A grease specifications
Wear Gauge: Digital caliper (0.01mm precision) with Bluetooth connectivity, enabling real-time wear data transmission to drilling optimization software
Rock Mechanics Expertise: In-house geomechanical lab with triaxial testing capabilities for custom tooth geometry design based on client-provided core samples
Quality Assurance: 100% magnetic particle inspection (MPI) for all load-bearing components, plus 2-hour pressure testing at 1.5x working pressure
After-Sales Support: 24/7 remote diagnostics via IoT-enabled sensors (optional), with dedicated field engineers for on-site failure analysis
Stock Availability: 50+ standard sizes in inventory, including rare IADC codes, with same-day shipping for urgent orders
HENGJI BIT SPECIFICATION | |
Bit Size | 9 5/8'’, 244.5mm |
IADC Code | 737 |
Series | HR |
Tooth type | TCI/tungsten carbide insert |
Connection | 6 5/8 API REG PIN |
Bearing | rubber sealed bearing |
Nozzle | three jet nozzles |
Rotary Speed(rpm) | 70~40 |
Weight on Bit(KN/MM) | 0.7~1.2 |
Application | water well,oil well,HDD,exploration,etc |
Formation | Hard formations |
Designed for extreme hard rock environments, the 9 5/8'' (244.5mm) IADC737 tricone bit features three steel-body cones with tungsten carbide inserts (TCI) arranged in 10 rows of chisel teeth (12mm height). The bit incorporates a journal bearing system with electroless nickel plating (ENP) and oil-lubricated seals, capable of withstanding WOB up to 350kN and temperatures up to 180°C. Its 16-blade cutter head and 25° cone angle optimize crushing and shearing in granite, basalt, and marble formations, certified to IADC 737 standards for premium performance. The helical flute design (38mm depth) ensures efficient cuttings removal even in low mud circulation scenarios.
TCI teeth (WC-10Co composition, 1300HV hardness) penetrate rocks with unconfined compressive strength (UCS) up to 300MPa, outperforming conventional milled teeth by 25% in gabbro
10mm-diameter tungsten carbide gauge buttons (arranged in 3 rows) reduce side wear by 25%, maintaining gauge integrity for 100+ hours in abrasive quartzite
Balanced cone rotation (±5% speed variance) minimizes eccentric loading, improving bit life by 20% compared to unbalanced designs
Thrust collar with diamond-like carbon (DLC) coating (surface roughness Ra ≤ 0.1μm) reduces friction coefficient to 0.05, 40% lower than standard ENP coatings
Pressure-equalizing membrane seals (polyurethane with fabric reinforcement) maintain grease integrity at 5000 PSI mud pressure, extending bearing life to 300+ hours
65mm journal diameter (10% larger than industry standard) increases load capacity by 15% for deep well applications (>6000m depth)
18° bit face inclination angle balances ROP and stability in highly fractured limestone, with field data showing 15% faster penetration than competitor models
Mud motor compatibility tested with Sperry-Sun and Geoservices systems, achieving 3°/10m build-up rate in hard sandstone
Helical flute pitch (200mm) optimized via discrete element method (DEM) simulation for 95% cuttings evacuation efficiency
Deep shale gas drilling in hard carbonate reservoirs (e.g., Middle East Khuff formation)
Mining blast hole drilling for iron ore extraction in basalt formations (UCS 200-280MPa)
Geotechnical exploration in schist and gneiss for hydroelectric dam foundations
Foundation piling for offshore wind farms in granite seabeds
Bit Stabilizer: 3-wing roller stabilizer (244mm OD) with tungsten carbide hardfacing, reducing bit whirl amplitude by 60% as measured by downhole vibration sensors
Bearing Grease Kit: High-temperature grease (NLGI 2, dropping point 260°C) formulated for 180°C continuous operation, meeting API 10A grease specifications
Wear Gauge: Digital caliper (0.01mm precision) with Bluetooth connectivity, enabling real-time wear data transmission to drilling optimization software
Rock Mechanics Expertise: In-house geomechanical lab with triaxial testing capabilities for custom tooth geometry design based on client-provided core samples
Quality Assurance: 100% magnetic particle inspection (MPI) for all load-bearing components, plus 2-hour pressure testing at 1.5x working pressure
After-Sales Support: 24/7 remote diagnostics via IoT-enabled sensors (optional), with dedicated field engineers for on-site failure analysis
Stock Availability: 50+ standard sizes in inventory, including rare IADC codes, with same-day shipping for urgent orders
