Specifications

1.Good quality &after-sale service 

2.Extensive industrail experience

3.ISO certified

4.Size:  8 3/4" to 11 5/8"

Structural features

In consideration of this high speed drilling condition,we specially developed the SUPER-MD ultra-high speed motor bit that is designed with roller-journal composite bearing and metal face seal.The bit is also equipped with advanced cutting structure and special hydraulic system with double extended nozzles that are suitable for high RPM drilling operations.This new Super-MD bit features high bearing reliability and long working life under high speed drilling conditions.SMD bits have been used on turbo drills in Russian oilfields achieved more than 30 hours of stable working life and the rotary speed is above 400 RPM.

It is recommended that SMD bits should be run within the range of 250 to 600 RPM in order to get better and economic drilling result.

The size range of SMD series bit is from 8 1/2 to 11 5/8 inch,and IADC varies from 117 to 617.

For example:8 1/2 SMD537X

SMD BIT FEATURES LONG SERVICE LIFE,HIGH RELIABLITY AND HIGH ROP UNDER ULTRA-HIGH ROTARY SPEED CONDITIONS.

Roller-journal composite bearing with metal face seal

Patented roller-journal composite bearing technology is used on SMD bit.This new bearing package combines the advantages of both roller bearing and journal bearing,together with metal face seal,insures higher reliability of the bit under high RPM and high WOB.  

Advanced cutting structure suitable for high RPM drilling.

Working environment of the bit's cutting structure becomes more severe under ultra-high RPM conditions.SMD bits uses selected carbide inserts with the strength and hardness of the inserts are matched properly.Cutter layout is optimized and new machining process for drilling insert hole is used to reduce or even eliminate insert breakage and loss during drilling.

HIGHLY EFFICIENT HYDRAULIC SYSTEM.

Special hydraulic system with double extended nozzles can remove large amount of drilling cuttings generated from fast drilling operations and eliminate drilling cutting logjamming area at the bottom hole and therefore facilitate up removal of the drilling cuttings.

OPTIONAL  FEATURES:C,D,E,H,K,X,Y