Publish Time: 2023-02-09 Origin: Site
12 1/4 Tricone drill bit 437&537&637
12 1/4 Tricone Bit | |||
IADC Code | 437 | 537 | 637 |
Series | HR | HR | HR |
Rotary Speed(rpm) | 150~70 | 120~50 | 80~40 |
Weight on Bit(KN/MM) | 0.35~0.9 | 0.45~1.0 | 0.5~1.2 |
Soft Formation IADC CODE 437 tricone rock bit
Are used to drill low compressive srength ,very soft formations.
Tci bit 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 baling in sticky formation.
Medium formation IADC CODE 537 tricone drilling bit
Feature 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 harf formations. The HSN rubber O-ring provides adequate
sealing for bearing durability.
Hard formation IADC CODE 637 tricone roller bit
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.