Specifications

3 7/8" 211 Workover Bits

rock roller bit

437

Soft Formation TCI Tricone Bits

The 427 tci bits are used to drill low compressive strength,very soft formations .TCI bits maximize the use of bothconical and chisel tungsten carbide inserts of large diameters and high projection.This cutting sstructure design,combined with maximum cone offset,results in high bit penetration rates .The deep intermesh of cutter rows prevents bit bailing in sticky formations.

517

Medium Formation TCI Tricone bits

The 517features aggressive chisel tungsten carbide inserts on the heel rows and inner rows.This desing 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.

637

Hard Formation TCI Tricone Bits

The 637bits can be used to drill hard and abrasive formations .Wearresistant tungsten carbide inserts are used in the outer rows to prevent loss of bit gauge.Maximum numbers of bemisphericalshaped inserts are used in all rows to provide cutter durability and long life.

617

Medium-Hard Formation TCI Tricone Bits

The 617features robust chisel tungsten carbide inserts on the heel row and conical on the inner rows.This design provides a fast drilling rate and added sutti8ng structure durability in medium to medium hard formations .The HSN rubber o-ring [rovodes adequate sea;omg fpr bearomg dirability.

Package:

1.All the Tricone rock bit are usually packed by wooden case, which is strong and safe. We assure that the products will arrive in good conditions.         

2.All the PDC bit are usually packey by iron case,Which more stronger and safer, we assure that products will arrive in good conditions.

Shipping by sea:
We can handle shipment as well. Please let me know the possible order quantity and your destination sea port. I can check freight and let you know the relevant cost 

Our aim is to supply the best quality products and the fastest and best service to meet every client's satisfaction. Contact me when there is any inquiry or question.   Let's work together to bring your dream to reality.

Step:

1. firstly contact us, let me know u have the need about the bit.

2. Decide the size and IADC code in accordance with client's requirement and our recommendation

3. We will give the best offer.

4. Client's accept the offer and we send proforma invoice.
5. Client transfers 30% deposit and production begins. 
6. After production, we will send ready products photo.

7. After client's confirmation, we will arrange shipment, and send copy shipping documents like B/L,

commercial invoice and packing list.

8. Client transfer balance payment and we will send original documents by express or Telex Release.

Our advantage:

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.

5.Product Application of this series tricone rock bit :
It is suitable for downhole motor and high speed applications.