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This Fixed Cutter Drill Bits adopts the design of deep de-cobalt PDC cutting teeth and force balance blade, which increases the mechanical drilling speed by more than 30% in shale and hard rock formations, prolongs the footage life of a single drill bit twice, significantly reduces the drilling cost per unit footage, and supports batch ordering.
Steel body or carcass optional
Body Material
Three to eight blade wing design
Blade Design
Thirteen mm
Cutting Teeth Size
Using high-performance cutting teeth with thermal stability up to 750 degrees Celsius, combined with the interface non-planar design, the wear resistance of the cutting teeth in the hard formation is increased by 40%, and the diamond layer is effectively resisted by frictional heat.
After CFD simulation and optimization of nozzle layout and flow channel design, the removal efficiency of rock cuttings at the bottom of the well is improved by 35%, effectively preventing the mud bag of the drill bit when drilling in high viscous mudstone formation, and ensuring that the cutting teeth always contact fresh rock.
The cutting tooth arrangement optimized by computer simulation makes the unbalanced force of the drill bit less than 4%, greatly reduces the underground stick-slip vibration, protects the underground measuring instrument and improves the slope stability of directional drilling.
The anti-impact impregnated insert or secondary cutting tooth is arranged behind the main cutting tooth, which can absorb 80% of the impact load generated when drilling gravel layer or soft and hard staggered formation, and prevent the main cutting tooth from chipping damage.
The diameter-preserving area is inlaid with high-density thermally stable polycrystalline diamond, and the diameter-preserving length tolerance is strictly controlled within 0.5mm to ensure smooth and regular wellbore trajectory and reduce the risk of resistance in subsequent casing operation.
For the steel body model, the five-axis linkage numerical control center is integrally formed, and the high-strength alloy steel material is selected. The torsional strength of the body is increased by 25%, and it can withstand the extreme mechanical load during deep well drilling with high torque.
| Parameter Items | Detailed specifications |
| Product Name | Fixed Cutter Drill Bits |
| IADC code range | M123 to M433 (carcass) / S123 to S433 (steel body) |
| Applicable size range | 3 1/2 inches to 26 inches (88.9 mm to 660.4 mm) |
| Blade material | Tungsten carbide matrix body or high-strength alloy steel body |
| Cutting tooth dimensions | Available in 19mm, 16mm, 13mm, 10mm, and 8mm. |
| Number of blades | 3 to 8 wings (customized according to formation hardness and displacement) |
| Nozzle type | Threaded fixed carbide nozzle (with interchangeable orifice diameters) |
| Connector thread standard | Compliant with API Spec 7-1 standards (NC31, NC38, NC46, NC50, 6-5/8 REG) |
| Diameter-keeping materials | Heat-stabilized polycrystalline diamondand tungsten carbide cemented carbide blocks |
| Recommended engine speed | 60 rpm to 250 rpm (up to 300+ rpm with downhole power drilling tools) |
This Fixed Cutter Drill Bits uses a shear cutting mechanism, which is more efficient in rock breaking in plastic shale and medium hard formations than the crushing cutting of roller cone bits. Its integral structure eliminates 1 of the weak links of the cone bit bearing system, can withstand higher speeds, and is very suitable for high-speed drilling with downhole power drilling tools (screw or turbine). In addition, the product exhibits excellent tool face control in directional and horizontal well operations through optimized cutting tooth chamfer design and lateral cutting ability. Compared with similar ordinary PDC bits, its special anti-rotation design makes the trajectory smoother when drilling in long horizontal sections, greatly reducing the friction torque problem caused by borehole distortion.
Using sharp PDC cutting teeth to produce efficient shearing action, instead of traditional inefficient extrusion crushing, the average mechanical drilling speed in shale formation will be increased by more than three times, greatly shortening the single well construction cycle.
The integrated fixed cutting structure design with no moving parts completely abandons the easily damaged bearing system, and fundamentally eliminates the complex accidents such as underground fishing caused by the failure of the bearing.
With the super wear resistance and thermal stability of the composite sheet, a single drill bit can complete several kilometers of footage, realizing the completion of the entire well section in 1 trips, effectively reducing the number of trips, and reducing the daily cost and labor cost of the drilling rig.
It is suitable for engineers responsible for deep reservoir development, especially for shale oil and gas, tight sandstone and other projects that require long horizontal drilling. The bit can provide stable high mechanical drilling speed and accurate trajectory control.
In view of the common high temperature and high abrasive granite formation in geothermal development, the high temperature resistant cutting teeth and matrix structure of the product can resist the high temperature environment at the bottom of the well to ensure continuous drilling without thermal failure.
Designed for operators who need frequent sliding guidance and rotary guidance, the optimized diameter and short profile design make it have excellent deflection capacity and tool face stability, reducing directional operation time.
It is suitable for coalbed methane extraction drilling and large-diameter engineering hole construction. Its solid steel structure and large flow channel design can meet the demand of large displacement slag discharge and keep the borehole wall stable under complex geological conditions.
Always check the cutting teeth for transport damage prior to tripping in, verify that the nozzle size is in accordance with the hydraulic program and is tightened, and apply a sufficient amount of special API thread oil to the joint threads.
Use a special bit loader for fastening. It is forbidden to use a pipe wrench to directly clamp the bit blade or cutting tooth. The fastening torque shall be strictly in accordance with the recommended value of API Spec 7-1 to prevent thread damage.
When the drill bit is 1 meter close to the bottom hole, start the drilling pump, use 30 r/min low speed and 2 tons low bit pressure to contact the bottom hole, run-in drilling at least 0.5 meters to establish the bottom hole model, and then gradually increase to the design parameters.
During the drilling process, the torque and riser pressure shall be closely monitored. In case of severe fluctuation of torque caused by sudden change of formation hardness, the WOB or rotating speed shall be reduced immediately to eliminate stick-slip vibration and prevent chipping of cutting teeth.
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Welcome to our Frequently Asked Questions page. We have compiled answers to common questions you may have, hoping to provide you with clear and quick solutions. If you cannot find the information you need here, please feel free to contact our customer support team.
This Fixed Cutter Drill Bits adopts the design of deep de-cobalt PDC cutting teeth and force balance blade, which increases the mechanical drilling speed by more than 30% in shale and hard rock formations, prolongs the footage life of a single drill bit twice, significantly reduces the drilling cost per unit footage, and supports batch ordering.
Body Material
Steel body or carcass optional
Blade Design
Three to eight blade wing design
Cutting Teeth Size
Thirteen mm
Using high-performance cutting teeth with thermal stability up to 750 degrees Celsius, combined with the interface non-planar design, the wear resistance of the cutting teeth in the hard formation is increased by 40%, and the diamond layer is effectively resisted by frictional heat.
After CFD simulation and optimization of nozzle layout and flow channel design, the removal efficiency of rock cuttings at the bottom of the well is improved by 35%, effectively preventing the mud bag of the drill bit when drilling in high viscous mudstone formation, and ensuring that the cutting teeth always contact fresh rock.
The cutting tooth arrangement optimized by computer simulation makes the unbalanced force of the drill bit less than 4%, greatly reduces the underground stick-slip vibration, protects the underground measuring instrument and improves the slope stability of directional drilling.
The anti-impact impregnated insert or secondary cutting tooth is arranged behind the main cutting tooth, which can absorb 80% of the impact load generated when drilling gravel layer or soft and hard staggered formation, and prevent the main cutting tooth from chipping damage.
The diameter-preserving area is inlaid with high-density thermally stable polycrystalline diamond, and the diameter-preserving length tolerance is strictly controlled within 0.5mm to ensure smooth and regular wellbore trajectory and reduce the risk of resistance in subsequent casing operation.
For the steel body model, the five-axis linkage numerical control center is integrally formed, and the high-strength alloy steel material is selected. The torsional strength of the body is increased by 25%, and it can withstand the extreme mechanical load during deep well drilling with high torque.
| Parameter Items | Detailed specifications |
| Product Name | Fixed Cutter Drill Bits |
| IADC code range | M123 to M433 (carcass) / S123 to S433 (steel body) |
| Applicable size range | 3 1/2 inches to 26 inches (88.9 mm to 660.4 mm) |
| Blade material | Tungsten carbide matrix body or high-strength alloy steel body |
| Cutting tooth dimensions | Available in 19mm, 16mm, 13mm, 10mm, and 8mm. |
| Number of blades | 3 to 8 wings (customized according to formation hardness and displacement) |
| Nozzle type | Threaded fixed carbide nozzle (with interchangeable orifice diameters) |
| Connector thread standard | Compliant with API Spec 7-1 standards (NC31, NC38, NC46, NC50, 6-5/8 REG) |
| Diameter-keeping materials | Heat-stabilized polycrystalline diamondand tungsten carbide cemented carbide blocks |
| Recommended engine speed | 60 rpm to 250 rpm (up to 300+ rpm with downhole power drilling tools) |
Using sharp PDC cutting teeth to produce efficient shearing action, instead of traditional inefficient extrusion crushing, the average mechanical drilling speed in shale formation will be increased by more than three times, greatly shortening the single well construction cycle.
The integrated fixed cutting structure design with no moving parts completely abandons the easily damaged bearing system, and fundamentally eliminates the complex accidents such as underground fishing caused by the failure of the bearing.
With the super wear resistance and thermal stability of the composite sheet, a single drill bit can complete several kilometers of footage, realizing the completion of the entire well section in 1 trips, effectively reducing the number of trips, and reducing the daily cost and labor cost of the drilling rig.
It is suitable for engineers responsible for deep reservoir development, especially for shale oil and gas, tight sandstone and other projects that require long horizontal drilling. The bit can provide stable high mechanical drilling speed and accurate trajectory control.
In view of the common high temperature and high abrasive granite formation in geothermal development, the high temperature resistant cutting teeth and matrix structure of the product can resist the high temperature environment at the bottom of the well to ensure continuous drilling without thermal failure.
Designed for operators who need frequent sliding guidance and rotary guidance, the optimized diameter and short profile design make it have excellent deflection capacity and tool face stability, reducing directional operation time.
It is suitable for coalbed methane extraction drilling and large-diameter engineering hole construction. Its solid steel structure and large flow channel design can meet the demand of large displacement slag discharge and keep the borehole wall stable under complex geological conditions.
Always check the cutting teeth for transport damage prior to tripping in, verify that the nozzle size is in accordance with the hydraulic program and is tightened, and apply a sufficient amount of special API thread oil to the joint threads.
Use a special bit loader for fastening. It is forbidden to use a pipe wrench to directly clamp the bit blade or cutting tooth. The fastening torque shall be strictly in accordance with the recommended value of API Spec 7-1 to prevent thread damage.
When the drill bit is 1 meter close to the bottom hole, start the drilling pump, use 30 r/min low speed and 2 tons low bit pressure to contact the bottom hole, run-in drilling at least 0.5 meters to establish the bottom hole model, and then gradually increase to the design parameters.
During the drilling process, the torque and riser pressure shall be closely monitored. In case of severe fluctuation of torque caused by sudden change of formation hardness, the WOB or rotating speed shall be reduced immediately to eliminate stick-slip vibration and prevent chipping of cutting teeth.
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