IADC217 6 1/2 Steel Tooth Tricone Drill Bit

• Customization: Available
• Type: Core Drill Bit
• Material: Tungsten Carbide
• Model NO.: 6 1/2 inch 165.1mm
• Usage: Well Drilling
• Wob: 0.4-1.0
• Rpm: 100-60
• Color: Blue Red Gooden
• Size: 165.1mm
• Transport Package: Wooden Case
• Specification: ISO9001
• Trademark: ouyate
• Origin: Hebei Hejian
• HS Code: 82071990
• Production Capacity: 1000PCS/Month

Product Description

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 journal 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

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 can receive higher WOB in the conventional drilling. It is suitable for various formations by matching cutting structure with different tooth shape, tooth density and tooth exposure height.

Bit size
in	mm
6 1/2	165.1
7 1/2	190.5
8 1/2	215.9
10 5/8	269.9
11 5/8	295.3
15 1/2	393.7

 
Recommended Drilling Parameters

IADC	WOB(kN/mm)	RPM(r/min)	Formation
114\115	0.3-0.75	180-50	Soft formation with low compressive strength and high drillability,such as  mudstone,clay,chalk,etc
116\117	0.3-0.8	150-70	Soft formation with low compressive strength and high drillability,such as  mudstone,clay,chalk,etc
124\125	0.3-0.85	180-60	Soft formation with low compressive strength and high drillability,such as  mudstone,clay,salt,loose stands,soft limestone,etc
126\127	0.3-0.9	150-60	Soft formation with low compressive strength and high drillability,such as  mudstone,clay,salt,loose stands,soft limestone,etc
134\135	0.35-0.95	150-50	Soft to medium formation with low compressive strength or soft with harder streaks,such as  mudstone,shale,soft limestone ,sands,etc
136\137	0.35-1.0	120-60	Soft to medium formation with low compressive strength or soft with harder streaks,such as  mudstone,shale,soft limestone ,sands,etc
214\215	0.4-0.95	150-60	medium  hard formation with high compressive strength ,such as  medium soft shale,anhydrite,medium soft limestone ,medium soft sandstone as well as thick and hard streaks,etc
216\217	0.4-1.0	100-60	medium  hard formation with low compressive strength ,such as  medium soft shale,limestone and sandstone as well as thick and hard streaks,etc
244	0.35-0.95	150-50	medium  hard formation with high compressive strength ,such as  hard shale,sands ,limestone,etc
246\247	0.4-1.0	80-50	medium  hard formation with high compressive strength ,such as  hard shale,sands ,limestone,etc
324\325	0.4-1.0	120-50	hard formation with  high strength and abrasiveness such as hard limestone,hard sands,dolomite,hard shale,etc