Core drill bit, three cone drill bit, three cone drill bit

Core Drilling Bit, Tricone Drilling Bit, Tricone Bit1.Tricone bit cutting structureAdopting new formula of new technology of the high quality hard alloy tooth, enhance the cutting teeth mechanical properties.2. Tricone bit diameter structureUsing multiple gage protection structure: Die with multidrug trimming t

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Core Drilling Bit, Tricone Drilling Bit, Tricone Bit

1.Tricone bit cutting structure
Adopting new formula of new technology of the high quality hard alloy tooth, enhance the cutting teeth mechanical properties.

2. Tricone bit diameter structure
Using multiple gage protection structure: Die with multidrug trimming tooth (GT teeth), round back, claw back set have cemented carbide gear, surfacing resistance mo alloy, strengthen ZhaoJian and anterior apply welding, greatly improving the drill gage protection ability.

3. Tricone bit bearing structure
Adopting high precision with radial sliding, two way thrust bearings, ball tight. Tooth claw big shaft neck and two stop surface welding have wear-resisting alloy, cone big hole and two stop surface solution and silver inlaid special alloy, increase the abrasion resistance and resistance bearing vice occlusive ability, improve bearing ability of high speed vice adapt.

4. Tricone bit seal lubricants
Adopting advanced metal seal, greatly extend the drill life.

5. Tricone bit applicable
Metal seal bit stable performance, than common rubber seal bit longer life, suitable for underground power drill and high penetration rate turntable drilling. <o:p>
 
IADC  WOBRPMApplication
(KN/mm)(r/min)
111/114/1150.3-0.75200-80very soft formations with low compressive strength and high drill ability, like clay, mudstone, chalk
116/1170.35-0.8150-80very soft formations with low compressive strength and high drill ability, like clay, mudstone, chalk
1210.3-0.85200-80soft formations with low compressive strength and high drill ability, like mudstone, gypsum, salt, soft limestone
124/125180-60
1310.3-0.95180-80soft to medium formations with low compressive strength, like medium, soft shake, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds
136/1370.35-1.0120-60
211/2410.3-0.95180-80medium formations with high compressive strength, like medium, soft shake, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds.
216/2170.4-1.0100-60
246/2470.4-1.080-50medium hard formation with high compressive strength, like hard shale, limestone, sandstone, dolomite
3210.4-1.0150-70medium abrasive formations, like abrasive shale, limestone, sandstone, dolomite, hard gypsum, marble
3240.4-1.0120-50
437/447/4350.35-0.9240-70very soft formations with low compressive strength and high drill ability, like clay, mudstone, chalk, gypsum, salt, soft limestone
517/527/5150.35-1.0220-60soft formations with low compressive strength and high drill ability, like mudstone, gypsum, salt, soft limestone
537/547/5350.45-1.0220-50soft to medium formations with low compressive strength, like medium, soft shake, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds
617/6150.45-1.1200-50medium hard formation with high compressive strength, like hard shale, limestone, sandstone, dolomite
637/6350.5-1.1180-40hard formation with high compressive strength, like limestone, sandstone, dolomite, hard gypsum, marble
Note: Above limitts of WOB and RRPM should not be used simultaneously

PIN SIZE
 
Bit DiameterAPI PIN
(inch)(mm)
3 7/8"~5 1/4"98~1342 3/8", 2 7/8"
5 5/8"~6 3/4"143~1713 1/2"
7 1/2"~9 1/2"190.5~2414 1/2"
9 5/8"~13 3/4"245~3506 5/8"
14 5/8"~26"371~660.47 5/8"

 

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