TCI Tricone Bit 12-1/2 Inch Three Roller Cone Drill Bit IADC 825

Place of Origin China
Brand Name EN
Certification API
Model Number 12500
Minimum Order Quantity Negotiation
Price Negotiation
Packaging Details Wooden Box
Delivery Time 2 weeks
Payment Terms T/T, L/C, Western Union
Supply Ability 3000pcs / year

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Product Details
Type Tricone Drill Bit Use Oil ,gas ,minig ,drilling ,water
Material Diamond ,Alloy Steel ,Tungston Carbide Machine Type Drilling Tool
Processing Type Forging ,Casting Application Rock Drill Of Oil ,mining ,gas
Size 12-1/2 Inch (311.1mm) Color Customer Requirement
Advantage High-efficiency , High Strength Usage Oil ,mining ,gas
Market All Over The World Packing Steel Box Or Wooden Box
Rock Formation F<8 Tooth Tungsten Carbide Drill Bit
Bearing Type Sealed Bearing Roller Bit
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TCI Tricone Drill Bit

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12-1/2 Inch Tricone Drill Bit

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IADC 825 Tricone Drill Bit

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Product Description

 

TCI Tricone Bit 12-1/2 Inch Three Roller Cone Drill Bit IADC 825

 

1 . Descriptions:

 

TCI (Tungsten Carbide Insert) bits are specifically designed for drilling in medium to hard rock formations. These bits incorporate a variety of carbide inserts, including spherical inserts for extremely hard rock and conical inserts for softer rock. The selection of insert rows depends on the specific drilling application and the desired hole size. Moreover, there are choices available for both open and sealed bearings, along with three types of shirttail protection. TCI is an abbreviation for Tungsten Carbide Insert.

TCI Tricone Bit 12-1/2 Inch  Three Roller Cone Drill Bit  IADC 825 0

 

2. Specification:

 

BIT SPECIFICATIONS
Diameter: 12-1/2 ”(311.1mm)
Body Type : Steel Body
Tooth Type: TCI  Tooth
Bearing : Sealed Rearing 
API Thread API Connection: 6-5/8 API REG
IACD CODE : 825
OPERATION PARAMETERS
Weight (Kg): 105 KGS
Flow Rate (LPS): 80-220
RPM Range (rotary): 130-40
Weight on Bit(kN): 152-300kN
Make Up Torque ( KN): 52 - 57KN

 

 

3 . Bit profile 

 

TCI Tricone Bit 12-1/2 Inch  Three Roller Cone Drill Bit  IADC 825 1

 

4  . Bearing Types

 

There are primarily three types of bearing designs used in tricone drilling bits:

 

• STANDARD OPEN BEARING ROLLER BIT:

On these bits the cones will spin freely. This type of bit has a front row of ball bearings and a back row of roller bearings.

• SEALED BEARING ROLLERS BITS

These bits have an O-Ring seal with a grease reservoir for bearing cooling. The seals acts as a barrier against mud and cuttings to protect the bearings

• JOURNAL BEARING ROLLER BITS

These bits are strictly oil/grease cooled with nose bearings, O-Ring seal and a race for maximum performance.

 

TCI Tricone Bit 12-1/2 Inch  Three Roller Cone Drill Bit  IADC 825 2

 

5. Question :

 

What we should be pay attention on choosing the tricone drill bit ?

  • IADC code passport
  • TCI & Steel tooth options
  • Additional tungsten carbide inserts on heel rows
  • Tungsten carbide coating on cone bodies
  • Diamond coated tungsten carbide inserts on the gauge of the cones
  • Tungsten carbide inserts on the shirttail of the legs
  • Additional central nozzle for cleaning cones

 

The tricone feature is that they come with their own passport as below :

  • The specification of the cones
  • The quality stamp signed by the person who made and checked the bit
  • The recommended drilling parameters to get the best performance out of the bit:
  • Bit weight
  • Rotation speed
  • Flushing volume

 

Which type of tricone you should choose ?

 

It depends on the geology you are drilling in and the diameters of the borehole you are drilling. The International Association of Drilling Contractors (IADC) have developed an easy use step system to choose the right tricone for your geology with additional features such as bit protection for longer production life.