Tricone Roller Drill Bit 7 5/8 Inch Hard Rock Drilling Bit Oil Field Drilling Tool Tricone Bit

Tricone drill bit is a device attached to the end of the drill string that breaks apart, cuts or crushes the rock formations when drilling a wellbore, such as those drilled to extract water, gas, or oil.
The drill bit is hollow and has jets to allow for the expulsion of the drilling fluid, or mud, at high velocity and high pressure to help clean the bit and, for softer formations, help to break apart the rock.
Tricone drill bits: A tricone bit comprises three conical rollers with teeth made of a hard material, such as tungsten carbide. The teeth break rock by crushing as the rollers move around the bottom of the borehole.

Detailed explanation of drill bit model code:
1- Milled Tooth Bit, soft formation (low compressive strength, high drillability)
2- Milled Tooth Bit, medium to medium hard formation (high compressive strength)
3- Milled Tooth Bit, Hard, Abrasive or Moderately Abrasive
4- Insert Tooth Bit, soft formation (low compressive strength, high drillability)
5- Insert Tooth Bit, soft to medium hard formation (low compressive strength)
6- Insert Tooth Bit, medium hard formation (high compressive strength)
7- Insert Tooth Bit, Hard, Abrasive or Moderately Abrasive
8- Insert Tooth Bit, extremely hard, highly abrasive formations

Tricone bits are O-type rubber sealed journal bearing bits, matched with different cutting structures, which can adapt to extremely soft to extremely hard bottom layers.
The surface of the tooth palm bearing is overlaid with a wear-resistant alloy layer, and the tooth wheel bearing is silver plated, improving its load-bearing capacity and anti-bite ability.
The use of a new type of lubricating grease that can withstand high temperatures of 250 degrees and is resistant to wear has improved the high-temperature resistance of the sealing lubrication system.
The inset bit adopts high-strength and high toughness hard alloy teeth, which improves the impact resistance of the teeth and reduces the rate of tooth breakage.
Welding wear-resistant materials on the tooth surface of steel toothed drill bits to further improve the wear resistance of drill bits.

Products Description

Notes for the use of roller cone bits:
1 .Before the drill bit is down, it is necessary to confirm that the bottom of the well is clean, free of grit, and no metal falling.
2. Check if the thread connection screw of the roller cone bit is intact and the nozzle is installed properly.
3. Run in hole needs to be stable, avoid stress and prevent drilling.
4. The last joint needs a large displacement to start the rotary table and keep reaming to bottom of the well., fully wash the well to prevent the debris from clogging the nozzle.
5. The shape of the bottom hole should be lightly pressed and slowly turned into contact with the bottom of the well, smalldrilling pressure, low speed, large displacement, small torque, and the speed is 40~60 rev / min, at least 30 minutes.
6. Determine the weight on bit and speed in combination with the actual conditions of the formation.
7. During drilling ahead, the operation should be smooth, drill feeding should be uniform, it is strictly forbidden to lift and release the drill sharply,drill string not well braked and drill string free fall.
8. If it is found that the drill bit stops making progress, the pump pressure increases and decreases obviously, the rate of penetration is suddenly decreased, and the torque is increased, lift the drill to check without delay.

Company Profile

1.What can you buy from us?

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A:You can pay by credit card, TT, Western Union, LC etc.

3.How is the shipment? How long dose it take?

A: For large quantity or heavy products, we ship by sea shipping or land shipping. Shipping efficiency depends on country and city you want to ship to. For small and delicate products, we ship by DHL, UPS, Fedex or TNT. You can also appoint shipping method you like before we ship.

4.How is your quality control?
A: We have our own experienced QC. There will be strict inspection and testing for every order before shipping out.