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BB 415
Soft Formation TCI Tricone Bits
The BB 415 tci bits are used to drill low
compressive strength, very soft formations. TCI bits maximize the
use of both conical and chisel tungsten carbide inserts of large diameters and high
projection. This cutting structure design, combined with maximum
cone offset, results in high bit penetration rates. The deep
intermesh of cutter rows prevents bit balling in sticky formations.
BB 535
Medium Formation TCI Tricone Bits
The BB535 features aggressive chisel tungsten carbide inserts on the heel rows and inner rows. This design provides a fast drilling rate and added cutting structure durability in medium-to-medium hard formations. The HSN rubber O-ring provides adequate sealing for bearing durability.
BB 625
Medium-Hard Formation TCI Tricone Bits
The BB 625 features robust chisel tungsten carbide inserts on the heel row and conical on the inner rows. This design provides a fast drilling rate and added cutting structure durability in medium to medium hard formations. The HSN rubber O-ring provides adequate sealing for bearing durability.
BB 735
Hard Formation TCI Tricone Bits
The BB 735 bits can be used to drill hard and abrasive
formations. Wear-resistant tungsten carbide inserts are used in the outer rows to
prevent loss of bit gauge. Maximum numbers of hemispherical-shaped
inserts are used in all rows to provide cutter durability and long
life.
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