Oil Water Mining Rock Well 9-7/8 " (250mm) Tricone Drill Bit

Oil Water Mining Rock Well  9-7/8 " (250mm) Tricone Drill Bit 

1 . Descriptions:

A tricone bit is a rock drilling tool equipped with tungsten carbide inserts, designed for use in oil, water, or gas well operations. Manufactured according to API specifications, this tool is an API-certified product.

Tungsten carbide is an exceptionally hard material, second only to diamond in hardness. Compared to diamond drill bits, tungsten carbide bits offer a more cost-effective solution.

As per API standards, a tricone bit is also referred to as a roller cone bit. It features tungsten carbide teeth to cut through rock formations and is categorized into two types:

• ‌TC Milled Tooth Bits‌: Customized for soft to very soft rock formations.
• ‌TCI Inserted Bits‌: Designed for medium-hard to hard rock formations.

This drilling tool is widely utilized in mining operations (including coal, copper, and rare metal mines), water wells, oil/gas wells, 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 .