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China’s trusted solution for wellbore enlargement, this hole opener features three oversize TCI cones and a central guide pin for ±3mm diameter accuracy in medium-hard to hard formations. The 28° cone angle and helical flutes ensure uniform hole enlargement, while tungsten carbide gauge buttons reduce washout by 40% in friable sandstone. Supporting 400kN WOB and 160°C operation, it’s used for casing running, salt dome reaming, and geothermal heat exchanger installation.
Custom guide pin dimensions for pilot bit compatibility, 100% ultrasonic testing, and eco-friendly packaging for sustainable logistics.
| Quantity: | |
|---|---|
Basical Specification | |
Hole Opener Size | 18 inches |
457.2 mm | |
Type | tungsten carbide insert single roller cone |
Cutter Type | 8 1/2’’ 617 |
Cutter Qty. | 6 pcs |
Bearing type | rubber sealed journal bearing |
Thread Connection | 4 1/2 IF pin*box |
Usage | Horizontal directional drilling |
Formation | Medium hard formations with high compressive strength,such as hard shale,sandstone,limestone,dolomite,etc. |
The 18'' (457.2mm) Tricone TCI Cutters Hole Opener is engineered for enlarging existing wellbores in medium-hard to hard formations, featuring three oversize cones with tungsten carbide inserts (14mm height) and a central guide pin (127mm diameter). The bit body (S45C carbon steel, HRC 35-40) incorporates a reinforced shank (API 5B 6 5/8'' REG thread) and 6 fluid ports (20mm diameter), supporting WOB up to 400kN and temperatures up to 160°C. Its 28° cone angle and staggered tooth pattern ensure uniform hole enlargement and stable operation, with a central guide pin providing ±3mm diameter accuracy relative to the pilot bit.
10mm clearance central guide pin (heat-treated 4140 steel, HRC 42-46) maintains alignment with pilot bits (4-12'' sizes), achieving ovality <2% in field tests
12mm tungsten carbide gauge buttons (arranged in 4 rows) control hole diameter expansion, reducing washout by 40% in friable sandstone
Asymmetric cone spacing (150-180mm) minimizes torque fluctuations (±10% variance) during reaming, improving hole quality index (HQI) by 30%
TCI teeth with 15% cobalt binder resist chipping in fractured limestone (impact toughness 15J/cm²), outlasting standard TCI by 20%
50μm electroless nickel-phosphorus plating on bearing surfaces provides corrosion resistance in high-chloride environments (Cl⁻ >100,000 PPM)
75mm-diameter cone arbors (yield strength 900MPa) handle high lateral forces (50kN) in deviated wellbores (inclination >45°)
40mm-deep helical flutes prevent cuttings bridging in low annular velocity (0.5m/s) conditions, as tested in the Drilling Engineering Association (DEA) flow loop
15° bit face slope reduces differential pressure across the bit in high-permeability zones (k >100 mD), minimizing the risk of differential sticking
Balanced hydraulics design ensures equal fluid distribution (±5% variance) to all cones, optimizing cooling and cuttings removal
Wellbore enlargement for casing running in tight holes (clearance <10mm), common in salt dome environments
Reaming operations after salt dissolution (e.g., Gulf of Mexico salt basins) to restore hole diameter
Creating open-hole chambers (5-10m length) for underground natural gas storage facilities
Increasing hole diameter for geothermal heat exchanger installation in granite formations
Guide Pin Protector: Removable steel sleeve (3mm thickness) with anti-wear lining, protecting the guide pin during transport and storage
Hydraulic Test Kit: Pressure gauge (0-10,000 PSI, 0.5% accuracy) with quick-connect fittings for on-site nozzle flow testing (ISO 17025 accredited)
Wear-Resistant Shoe: Replaceable tungsten carbide shoe (HV 1500) for the central guide pin, extendable service life by 50 hours in abrasive conditions
Engineering Expertise: Custom guide pin dimensions (diameter, length) available to match specific pilot bit specifications within 0.1mm tolerance
Quality Assurance: 100% ultrasonic testing (UT) for critical components (shank, cone arbors) with phased array technology (defect detection ≥2mm)
Field Support: On-site technicians for bit installation and performance optimization, including torque and WOB parameter recommendations
Sustainability Focus: 90% recyclable materials used in bit construction (steel, tungsten carbide, nickel plating), with eco-friendly packaging (100% recycled cardboard)
Basical Specification | |
Hole Opener Size | 18 inches |
457.2 mm | |
Type | tungsten carbide insert single roller cone |
Cutter Type | 8 1/2’’ 617 |
Cutter Qty. | 6 pcs |
Bearing type | rubber sealed journal bearing |
Thread Connection | 4 1/2 IF pin*box |
Usage | Horizontal directional drilling |
Formation | Medium hard formations with high compressive strength,such as hard shale,sandstone,limestone,dolomite,etc. |
The 18'' (457.2mm) Tricone TCI Cutters Hole Opener is engineered for enlarging existing wellbores in medium-hard to hard formations, featuring three oversize cones with tungsten carbide inserts (14mm height) and a central guide pin (127mm diameter). The bit body (S45C carbon steel, HRC 35-40) incorporates a reinforced shank (API 5B 6 5/8'' REG thread) and 6 fluid ports (20mm diameter), supporting WOB up to 400kN and temperatures up to 160°C. Its 28° cone angle and staggered tooth pattern ensure uniform hole enlargement and stable operation, with a central guide pin providing ±3mm diameter accuracy relative to the pilot bit.
10mm clearance central guide pin (heat-treated 4140 steel, HRC 42-46) maintains alignment with pilot bits (4-12'' sizes), achieving ovality <2% in field tests
12mm tungsten carbide gauge buttons (arranged in 4 rows) control hole diameter expansion, reducing washout by 40% in friable sandstone
Asymmetric cone spacing (150-180mm) minimizes torque fluctuations (±10% variance) during reaming, improving hole quality index (HQI) by 30%
TCI teeth with 15% cobalt binder resist chipping in fractured limestone (impact toughness 15J/cm²), outlasting standard TCI by 20%
50μm electroless nickel-phosphorus plating on bearing surfaces provides corrosion resistance in high-chloride environments (Cl⁻ >100,000 PPM)
75mm-diameter cone arbors (yield strength 900MPa) handle high lateral forces (50kN) in deviated wellbores (inclination >45°)
40mm-deep helical flutes prevent cuttings bridging in low annular velocity (0.5m/s) conditions, as tested in the Drilling Engineering Association (DEA) flow loop
15° bit face slope reduces differential pressure across the bit in high-permeability zones (k >100 mD), minimizing the risk of differential sticking
Balanced hydraulics design ensures equal fluid distribution (±5% variance) to all cones, optimizing cooling and cuttings removal
Wellbore enlargement for casing running in tight holes (clearance <10mm), common in salt dome environments
Reaming operations after salt dissolution (e.g., Gulf of Mexico salt basins) to restore hole diameter
Creating open-hole chambers (5-10m length) for underground natural gas storage facilities
Increasing hole diameter for geothermal heat exchanger installation in granite formations
Guide Pin Protector: Removable steel sleeve (3mm thickness) with anti-wear lining, protecting the guide pin during transport and storage
Hydraulic Test Kit: Pressure gauge (0-10,000 PSI, 0.5% accuracy) with quick-connect fittings for on-site nozzle flow testing (ISO 17025 accredited)
Wear-Resistant Shoe: Replaceable tungsten carbide shoe (HV 1500) for the central guide pin, extendable service life by 50 hours in abrasive conditions
Engineering Expertise: Custom guide pin dimensions (diameter, length) available to match specific pilot bit specifications within 0.1mm tolerance
Quality Assurance: 100% ultrasonic testing (UT) for critical components (shank, cone arbors) with phased array technology (defect detection ≥2mm)
Field Support: On-site technicians for bit installation and performance optimization, including torque and WOB parameter recommendations
Sustainability Focus: 90% recyclable materials used in bit construction (steel, tungsten carbide, nickel plating), with eco-friendly packaging (100% recycled cardboard)
