Product Details

Specifications

1 All series
2 meet customer needs as possible
3High quality meet with API and ISO9001
4 Advanced processing

Product Description

Current Availability

Bit size
in	mm
16	406.4
20	508.0

Recommended Drilling Parameters

IADC	WOB(kN/mm)	RPM(r/min)	Formation
417/427	0.3-0.9	150-70	Soft formation with low compressive strength and high drillability,such as clay,soft mudstone,shale,salt,loose sands,etc
437/447	0.35-0.9	150-70	Soft formation with low compressive strength and high drillability,such as clay,soft mudstone,shale,salt,loose sands,etc
515/525	0.35-0.9	180-60	Soft formation with low compressive strength and high drillability,such as mudstone,salt,sands,soft limestone,etc
517/527	0.35-1.0	140-50	Soft formation with low compressive strength and high drillability,such as mudstone,salt,sands,soft limestone,etc
535/545	0.35-1.0	150-60	medium soft formation more abrasive streaks,such as mudstone,hard shale,soft limestone ,etc
537/547	0.4-1.0	120-40	medium soft formation more abrasive streaks,such as mudstone,hard shale,soft limestone ,etc
617/627	0.45-1.1	90-50	medium hard formation with higher compressive strength ,as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc.
637	0.5-1.2	80-40	medium hard formation with higher compressive strength ,as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc.
737	0.7-1.2	70-40	hard formation with high abrasiveness such as hard limestone,dolomite ,firm sands ,etc
827/837	0.4-1.0	80-50	hard formation with high abrasiveness such as quartzite,quartzitic sand,chert,basalt,granite,etc

Cutting structure

The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit.The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.

Gauge structure

Multiple gauge protection with gauge trimmers on the 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.

Bearing structure

High precision roller bearing with two thrust faces.Balls lock the cone.Hardraced head 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.

Seal and lubrication

Premiun HNBR O-ring ,optimal seal compression and curved seal structure can enhance the seal performance.The pressure compensator system and advanced grease can greatly increase the lubricating reliability.

Product application

It is suitable for various formations ,and achieves high RPM under low to medium WOB applications.

Packaging & Shipping