API Special Tungsten carbide insert 9-7/8 " (250mm) Rock Mining Tricone Drill Bit

API Special Tungsten carbide insert 9-7/8 " (250mm) Rock Mining Tricone Drill Bit 

1 . Descriptions:

Tricone bit is a rock drilling Tool with tungsten carbide insert  used on the rock  oil mining water or oil well . This rock drilling tool is manufactured according to API specs which are the API certification products. . Tungsten carbide material is very ard material which hardness is only lower diamond in all the material . Comparatively the Diamond drill bit , Tungsten carbide drill bit price is lower. Tricone drill bit is called roller cone bit according to API standard . Tricone bit is used tungsten carbide material Tooth to  cut the rock which are split two type roller cone bit  welding TC Milled Tooth  and TCI Inserted .TC Milled tooth and TCI inserted drill bit are customized Drill Bit according to the Rock grad. TCI Tricone bit is used for the middle hard to hard rock formation. Milled tooth (all called steel tooth) tricone drill bit is used for soft to very soft rock formation.
This drilling tool is widely used in the mining well (such as coal mines, copper mines, and other rare metal mines),water well , oil /gas well and geological prospecting .

2. Specification:

3 . Tricone Drill Bit Proilfe and Composition part : 

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.

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

6. 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 and so on .