rock bits for water or oil wells IADC437-637

rock bits for water or oil wells - IADC437-637

1.API&ISO9001 certification, 2.Professional (used and new )tricone bits and PDC bits manudacture, 3.30 years experiences - more info check here: http://www.buyindustrialtools.com/rock-bits-for-water-or-oil-wells-10078308/

Quick Brief

Place of Origin: Hebei China (Mainland) Brand Name: ZK Model Number: IADC437-637 Type: Core Drill Bit Material: Tungsten Carbide Use: Well Drilling size: 4" to 17 1/2"

Specifications and Product Details:

1.description of drill bit

(1) Cutting Structure of this series tricone rock bit :
The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.The wear resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit.

(2) Gauge Structure of this series tricone rock bit :
Multiple gauge protection with gauge trimmers on heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.

(3)Bearing Structure of this series tricone rock bit :
High precision bearing with two thrust faces. Balls lock the cone.Hardface heard bearing surface. Cone bearing inlaid with friction-reducing alloy and then silver plated. Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed.

(4)Seal and Lubrication of this series tricone rock bit :
The advanced metal seal package consists of two metal seats and two elastic energizers. Compressed energizers ensure good contact being kept on two sealing surfaces of metal rings by elastic force, and achieve the bearing seal. In the drilling, metal seal are relatively dynamic, and the energizers are static. This will improve the reliability and durability of bearing seal. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.

2.main product

size		Bit Type
In	mm
6	152.4	437,517,537,617,637
6 1/2	165.1	437,517,537,617,637
7 1/2	190.5	517,537
8 1/2	215.9	437,535,517,537,617,637
9 1/2	241.3	437,517,537,617,637
9 5/8	244.5	535,517,537
9 7/8	250.8	517,537
12 1/4	311.1	437,535,517,537,617,637
17 1/2	444.8	535,517,537

TCI bits(Tungsten Carbide Insert bits)

1.Soft formations(417,437,447,517,537,547)

Features large chisel-shaped inserts to provide the highest penetration rate in the softest formations such as shales,

clays, limestone and sands.

2.Soft to medium formations(617,627,637)

Designed to drill effectively in formations such as hard limestone, dolomite, hard sands, and other formations with hard

cherty.

3.Medium to hard formations(737)

For extremely hard formations such as chert, granite, flint, and taconite. Features short, closely-spaced inserts to ensure

maximum penetration rate and wear resistance.

Mill tooth bits/Steel tooth bits

1. Soft formations(114-117)

These bits are used to drill low-compressive strength,soft formations. Long projection tooth lengths are used on high

offset cones to provide the greatest penetration rates possible . Wear-resistant hard facing is used to control tooth wear.Onthe softest bit types this hard facing completely covers the bit teeth.

2. Soft to medium formations(121,124,126,134,136,137)

These bits are used to drill high-compressive strength,medium hard formations.Short projection teeth with reduced crest length are used in this series

of bit designs.Durable hard facing is applied to reduce tooth wear.

3. Medium to hard formations(213,214,215,217)

These bits are designed to drill formations such as hard sandstone, dolomite, and broken formations with hard cherty streaks